Word,Tag | |
#23159251 | |
An,O | |
exponential,O | |
combination,O | |
procedure,O | |
for,O | |
set,O | |
-,O | |
based,O | |
association,O | |
tests,O | |
in,O | |
sequencing,O | |
studies,O | |
.,O | |
, | |
State,O | |
-,O | |
of,O | |
-,O | |
the,O | |
-,O | |
art,O | |
next,O | |
-,O | |
generation,O | |
-,O | |
sequencing,O | |
technologies,O | |
can,O | |
facilitate,O | |
in,O | |
-,O | |
depth,O | |
explorations,O | |
of,O | |
the,O | |
human,O | |
genome,O | |
by,O | |
investigating,O | |
both,O | |
common,O | |
and,O | |
rare,O | |
variants,O | |
.,O | |
, | |
For,O | |
the,O | |
identification,O | |
of,O | |
genetic,O | |
factors,O | |
that,O | |
are,O | |
associated,O | |
with,O | |
disease,O | |
risk,O | |
or,O | |
other,O | |
complex,O | |
phenotypes,O | |
,,O | |
methods,O | |
have,O | |
been,O | |
proposed,O | |
for,O | |
jointly,O | |
analyzing,O | |
variants,O | |
in,O | |
a,O | |
set,O | |
(,O | |
e.g.,O | |
,,O | |
all,O | |
coding,O | |
SNPs,O | |
in,O | |
a,O | |
gene,O | |
),O | |
.,O | |
, | |
Variants,O | |
in,O | |
a,O | |
properly,O | |
defined,O | |
set,O | |
could,O | |
be,O | |
associated,O | |
with,O | |
risk,O | |
or,O | |
phenotype,O | |
in,O | |
a,O | |
concerted,O | |
fashion,O | |
,,O | |
and,O | |
by,O | |
accumulating,O | |
information,O | |
from,O | |
them,O | |
,,O | |
one,O | |
can,O | |
improve,O | |
power,O | |
to,O | |
detect,O | |
genetic,O | |
risk,O | |
factors,O | |
.,O | |
, | |
Many,O | |
set,O | |
-,O | |
based,O | |
methods,O | |
in,O | |
the,O | |
literature,O | |
are,O | |
based,O | |
on,O | |
statistics,O | |
that,O | |
can,O | |
be,O | |
written,O | |
as,O | |
the,O | |
summation,O | |
of,O | |
variant,O | |
statistics,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
propose,O | |
taking,O | |
the,O | |
summation,O | |
of,O | |
the,O | |
exponential,O | |
of,O | |
variant,O | |
statistics,O | |
as,O | |
the,O | |
set,O | |
summary,O | |
for,O | |
association,O | |
testing,O | |
.,O | |
, | |
From,O | |
both,O | |
Bayesian,O | |
and,O | |
frequentist,O | |
perspectives,O | |
,,O | |
we,O | |
provide,O | |
theoretical,O | |
justification,O | |
for,O | |
taking,O | |
the,O | |
sum,O | |
of,O | |
the,O | |
exponential,O | |
of,O | |
variant,O | |
statistics,O | |
because,O | |
it,O | |
is,O | |
particularly,O | |
powerful,O | |
for,O | |
sparse,O | |
alternatives,O | |
-,O | |
that,O | |
is,O | |
,,O | |
compared,O | |
with,O | |
the,O | |
large,O | |
number,O | |
of,O | |
variants,O | |
being,O | |
tested,O | |
in,O | |
a,O | |
set,O | |
,,O | |
only,O | |
relatively,O | |
few,O | |
variants,O | |
are,O | |
associated,O | |
with,O | |
disease,O | |
risk,O | |
-,O | |
a,O | |
distinctive,O | |
feature,O | |
of,O | |
genetic,O | |
data,O | |
.,O | |
, | |
We,O | |
applied,O | |
the,O | |
exponential,O | |
combination,O | |
gene,O | |
-,O | |
based,O | |
test,O | |
to,O | |
a,O | |
sequencing,O | |
study,O | |
in,O | |
anticancer,O | |
pharmacogenomics,O | |
and,O | |
uncovered,O | |
mechanistic,O | |
insights,O | |
into,O | |
genes,O | |
and,O | |
pathways,O | |
related,O | |
to,O | |
chemotherapeutic,O | |
susceptibility,O | |
for,O | |
an,O | |
important,O | |
class,O | |
of,O | |
oncologic,O | |
drugs,O | |
.,O | |
, | |
#8318995 | |
Sporadic,O | |
alleles,O | |
,,O | |
including,O | |
a,O | |
novel,O | |
mutation,O | |
,,O | |
characterize,O | |
beta,O | |
-,O | |
thalassemia,O | |
in,O | |
Ashkenazi,O | |
Jews,O | |
.,O | |
, | |
#9452104 | |
Identification,O | |
of,O | |
four,O | |
novel,O | |
mutations,O | |
in,O | |
the,O | |
factor,B-Gene | |
VIII,I-Gene | |
gene,O | |
:,O | |
three,O | |
missense,O | |
mutations,O | |
(,B-SNP | |
E1875,I-SNP | |
G,I-SNP | |
,,I-SNP | |
G2088S,B-SNP | |
,,I-SNP | |
I2185,B-SNP | |
T,I-SNP | |
),I-SNP | |
and,O | |
a,O | |
2,O | |
-,O | |
bp,O | |
deletion,O | |
(,B-SNP | |
1780delTC,I-SNP | |
),I-SNP | |
.,O | |
, | |
#21665001 | |
Hereditary,O | |
leukonychia,O | |
,,O | |
or,O | |
porcelain,O | |
nails,O | |
,,O | |
resulting,O | |
from,O | |
mutations,O | |
in,O | |
PLCD1,B-Gene | |
.,I-Gene | |
, | |
Hereditary,O | |
leukonychia,O | |
(,O | |
porcelain,O | |
nails,O | |
or,O | |
white,O | |
nails,O | |
),O | |
is,O | |
a,O | |
rare,O | |
nail,O | |
disorder,O | |
with,O | |
an,O | |
unknown,O | |
genetic,O | |
basis,O | |
.,O | |
, | |
To,O | |
identify,O | |
variants,O | |
in,O | |
a,O | |
gene,O | |
underlying,O | |
this,O | |
phenotype,O | |
,,O | |
we,O | |
identified,O | |
four,O | |
families,O | |
of,O | |
Pakistani,O | |
origin,O | |
showing,O | |
features,O | |
of,O | |
hereditary,O | |
leukonychia,O | |
.,O | |
, | |
All,O | |
20,O | |
nails,O | |
of,O | |
each,O | |
affected,O | |
individual,O | |
were,O | |
chalky,O | |
and,O | |
white,O | |
in,O | |
appearance,O | |
,,O | |
consistent,O | |
with,O | |
total,O | |
leukonychia,O | |
,,O | |
with,O | |
no,O | |
other,O | |
cutaneous,O | |
,,O | |
appendageal,O | |
,,O | |
or,O | |
systemic,O | |
findings,O | |
.,O | |
, | |
By,O | |
using,O | |
Affymetrix,O | |
10,O | |
K,O | |
chip,O | |
,,O | |
we,O | |
established,O | |
linkage,O | |
to,O | |
chromosome,O | |
3p21.3,O | |
-,O | |
p22,O | |
with,O | |
a,O | |
LOD,O | |
score,O | |
(,O | |
Z,O | |
),O | |
of,O | |
5.1,O | |
.,O | |
, | |
We,O | |
identified,O | |
pathogenic,O | |
mutations,O | |
in,O | |
PLCD1,B-Gene | |
in,O | |
all,O | |
four,O | |
families,O | |
,,O | |
which,O | |
encodes,O | |
phosphoinositide,B-Gene | |
-,I-Gene | |
specific,I-Gene | |
phospholipase,I-Gene | |
C,I-Gene | |
delta,I-Gene | |
1,I-Gene | |
subunit,O | |
,,O | |
a,O | |
key,O | |
enzyme,O | |
in,O | |
phosphoinositide,O | |
metabolism,O | |
.,O | |
, | |
We,O | |
then,O | |
identified,O | |
localization,O | |
of,O | |
PLCD1,B-Gene | |
in,O | |
the,O | |
nail,O | |
matrix,O | |
.,O | |
, | |
It,O | |
was,O | |
recently,O | |
shown,O | |
that,O | |
PLCD1,B-Gene | |
is,O | |
a,O | |
component,O | |
of,O | |
the,O | |
human,O | |
nail,O | |
plate,O | |
by,O | |
proteomic,O | |
analysis,O | |
and,O | |
is,O | |
localized,O | |
in,O | |
the,O | |
matrix,O | |
of,O | |
human,O | |
nails,O | |
.,O | |
, | |
Furthermore,O | |
,,O | |
mutations,O | |
detected,O | |
in,O | |
PLCD1,B-Gene | |
resulted,O | |
in,O | |
reduced,O | |
enzymatic,O | |
activity,O | |
in,O | |
,O | |
vitro,O | |
.,O | |
, | |
Our,O | |
data,O | |
show,O | |
that,O | |
mutations,O | |
in,O | |
PLCD1,B-Gene | |
underlie,O | |
hereditary,O | |
leukonychia,O | |
,,O | |
revealing,O | |
a,O | |
gene,O | |
involved,O | |
in,O | |
molecular,O | |
control,O | |
of,O | |
nail,O | |
growth,O | |
.,O | |
, | |
#8940261 | |
The,O | |
extent,O | |
,,O | |
mechanism,O | |
,,O | |
and,O | |
consequences,O | |
of,O | |
genetic,O | |
variation,O | |
,,O | |
for,O | |
recombination,O | |
rate,O | |
.,O | |
, | |
#20206336 | |
Identification,O | |
of,O | |
a,O | |
recurrent,O | |
microdeletion,O | |
at,O | |
17q23.1q23.2,O | |
flanked,O | |
by,O | |
segmental,O | |
duplications,O | |
associated,O | |
with,O | |
heart,O | |
defects,O | |
and,O | |
limb,O | |
abnormalities,O | |
.,O | |
, | |
Segmental,O | |
duplications,O | |
,,O | |
which,O | |
comprise,O | |
approximately,O | |
5%-10,O | |
%,O | |
of,O | |
the,O | |
human,O | |
genome,O | |
,,O | |
are,O | |
known,O | |
to,O | |
mediate,O | |
medically,O | |
relevant,O | |
deletions,O | |
,,O | |
duplications,O | |
,,O | |
and,O | |
inversions,O | |
through,O | |
nonallelic,O | |
homologous,O | |
recombination,O | |
(,O | |
NAHR,O | |
),O | |
and,O | |
have,O | |
been,O | |
suggested,O | |
to,O | |
be,O | |
hot,O | |
spots,O | |
in,O | |
chromosome,O | |
evolution,O | |
and,O | |
human,O | |
genomic,O | |
instability,O | |
.,O | |
, | |
We,O | |
report,O | |
seven,O | |
individuals,O | |
with,O | |
microdeletions,O | |
at,O | |
17q23.1q23.2,O | |
,,O | |
identified,O | |
by,O | |
microarray,O | |
-,O | |
based,O | |
comparative,O | |
genomic,O | |
hybridization,O | |
(,O | |
aCGH,O | |
),O | |
.,O | |
, | |
Six,O | |
of,O | |
the,O | |
seven,O | |
deletions,O | |
are,O | |
approximately,O | |
2.2,O | |
Mb,O | |
in,O | |
size,O | |
and,O | |
flanked,O | |
by,O | |
large,O | |
segmental,O | |
duplications,O | |
of,O | |
>,O | |
98,O | |
%,O | |
sequence,O | |
identity,O | |
and,O | |
in,O | |
the,O | |
same,O | |
orientation,O | |
.,O | |
, | |
One,O | |
of,O | |
the,O | |
deletions,O | |
is,O | |
approximately,O | |
2.8,O | |
Mb,O | |
in,O | |
size,O | |
and,O | |
is,O | |
flanked,O | |
on,O | |
the,O | |
distal,O | |
side,O | |
by,O | |
a,O | |
segmental,O | |
duplication,O | |
,,O | |
whereas,O | |
the,O | |
proximal,O | |
breakpoint,O | |
falls,O | |
between,O | |
segmental,O | |
duplications,O | |
.,O | |
, | |
These,O | |
characteristics,O | |
suggest,O | |
that,O | |
NAHR,O | |
mediated,O | |
six,O | |
out,O | |
of,O | |
seven,O | |
of,O | |
these,O | |
rearrangements,O | |
.,O | |
, | |
These,O | |
individuals,O | |
have,O | |
common,O | |
features,O | |
,,O | |
including,O | |
mild,O | |
to,O | |
moderate,O | |
developmental,O | |
delay,O | |
(,O | |
particularly,O | |
speech,O | |
delay,O | |
),O | |
,,O | |
microcephaly,O | |
,,O | |
postnatal,O | |
growth,O | |
retardation,O | |
,,O | |
heart,O | |
defects,O | |
,,O | |
and,O | |
hand,O | |
,,O | |
foot,O | |
,,O | |
and,O | |
limb,O | |
abnormalities,O | |
.,O | |
, | |
Although,O | |
all,O | |
individuals,O | |
had,O | |
at,O | |
least,O | |
mild,O | |
dysmorphic,O | |
facial,O | |
features,O | |
,,O | |
there,O | |
was,O | |
no,O | |
characteristic,O | |
constellation,O | |
of,O | |
features,O | |
that,O | |
would,O | |
elicit,O | |
clinical,O | |
suspicion,O | |
of,O | |
a,O | |
specific,O | |
disorder,O | |
.,O | |
, | |
The,O | |
identification,O | |
of,O | |
common,O | |
clinical,O | |
features,O | |
suggests,O | |
that,O | |
microdeletions,O | |
at,O | |
17q23.1q23.2,O | |
constitute,O | |
a,O | |
novel,O | |
syndrome,O | |
.,O | |
, | |
Furthermore,O | |
,,O | |
the,O | |
inclusion,O | |
in,O | |
the,O | |
minimal,O | |
deletion,O | |
region,O | |
of,O | |
TBX2,B-Gene | |
and,O | |
TBX4,B-Gene | |
,,I-Gene | |
transcription,O | |
factors,O | |
belonging,O | |
to,O | |
a,O | |
family,O | |
of,O | |
genes,O | |
implicated,O | |
in,O | |
a,O | |
variety,O | |
of,O | |
developmental,O | |
pathways,O | |
including,O | |
those,O | |
of,O | |
heart,O | |
and,O | |
limb,O | |
,,O | |
suggests,O | |
that,O | |
these,O | |
genes,O | |
may,O | |
play,O | |
an,O | |
important,O | |
role,O | |
in,O | |
the,O | |
phenotype,O | |
of,O | |
this,O | |
emerging,O | |
syndrome,O | |
.,O | |
, | |
#22365152 | |
De,O | |
novo,O | |
pathogenic,O | |
SCN8A,B-Gene | |
mutation,O | |
identified,O | |
by,O | |
whole,O | |
-,O | |
genome,O | |
sequencing,O | |
of,O | |
a,O | |
family,O | |
quartet,O | |
affected,O | |
by,O | |
infantile,O | |
epileptic,O | |
encephalopathy,O | |
and,O | |
SUDEP,O | |
.,O | |
, | |
Individuals,O | |
with,O | |
severe,O | |
,,O | |
sporadic,O | |
disorders,O | |
of,O | |
infantile,O | |
onset,O | |
represent,O | |
an,O | |
important,O | |
class,O | |
of,O | |
disease,O | |
for,O | |
which,O | |
discovery,O | |
of,O | |
the,O | |
underlying,O | |
genetic,O | |
architecture,O | |
is,O | |
not,O | |
amenable,O | |
to,O | |
traditional,O | |
genetic,O | |
analysis,O | |
.,O | |
, | |
Full,O | |
-,O | |
genome,O | |
sequencing,O | |
of,O | |
affected,O | |
individuals,O | |
and,O | |
their,O | |
parents,O | |
provides,O | |
a,O | |
powerful,O | |
alternative,O | |
strategy,O | |
for,O | |
gene,O | |
discovery,O | |
.,O | |
, | |
We,O | |
performed,O | |
whole,O | |
-,O | |
genome,O | |
sequencing,O | |
(,O | |
WGS,O | |
),O | |
on,O | |
a,O | |
family,O | |
quartet,O | |
containing,O | |
an,O | |
affected,O | |
proband,O | |
and,O | |
her,O | |
unaffected,O | |
parents,O | |
and,O | |
sibling,O | |
.,O | |
, | |
The,O | |
15,O | |
-,O | |
year,O | |
-,O | |
old,O | |
female,O | |
proband,O | |
had,O | |
a,O | |
severe,O | |
epileptic,O | |
encephalopathy,O | |
consisting,O | |
of,O | |
early,O | |
-,O | |
onset,O | |
seizures,O | |
,,O | |
features,O | |
of,O | |
autism,O | |
,,O | |
intellectual,O | |
disability,O | |
,,O | |
ataxia,O | |
,,O | |
and,O | |
sudden,O | |
unexplained,O | |
death,O | |
in,O | |
epilepsy,O | |
.,O | |
, | |
We,O | |
discovered,O | |
a,O | |
de,O | |
novo,O | |
heterozygous,O | |
missense,O | |
mutation,O | |
(,B-SNP | |
c.5302A,I-SNP | |
>,I-SNP | |
G,I-SNP | |
, | |
[,B-SNP | |
p.,I-SNP | |
Asn1768Asp,I-SNP | |
],I-SNP | |
),O | |
in,O | |
the,O | |
voltage,O | |
-,O | |
gated,O | |
sodium,O | |
-,O | |
channel,O | |
gene,O | |
SCN8A,B-Gene | |
in,O | |
the,O | |
proband,O | |
.,O | |
, | |
This,O | |
mutation,O | |
alters,O | |
an,O | |
evolutionarily,O | |
conserved,O | |
residue,O | |
in,O | |
Nav1.6,O | |
,,O | |
one,O | |
of,O | |
the,O | |
most,O | |
abundant,O | |
sodium,O | |
channels,O | |
in,O | |
the,O | |
brain,O | |
.,O | |
, | |
Analysis,O | |
of,O | |
the,O | |
biophysical,O | |
properties,O | |
of,O | |
the,O | |
mutant,O | |
channel,O | |
demonstrated,O | |
a,O | |
dramatic,O | |
increase,O | |
in,O | |
persistent,O | |
sodium,O | |
current,O | |
,,O | |
incomplete,O | |
channel,O | |
inactivation,O | |
,,O | |
and,O | |
a,O | |
depolarizing,O | |
shift,O | |
in,O | |
the,O | |
voltage,O | |
dependence,O | |
of,O | |
steady,O | |
-,O | |
state,O | |
fast,O | |
inactivation,O | |
.,O | |
, | |
Current,O | |
-,O | |
clamp,O | |
analysis,O | |
in,O | |
hippocampal,O | |
neurons,O | |
transfected,O | |
with,O | |
p.,B-SNP | |
Asn1768Asp,I-SNP | |
channels,O | |
revealed,O | |
increased,O | |
spontaneous,O | |
firing,O | |
,,O | |
paroxysmal,O | |
-,O | |
depolarizing,O | |
-,O | |
shift,O | |
-,O | |
like,O | |
complexes,O | |
,,O | |
and,O | |
an,O | |
increased,O | |
firing,O | |
frequency,O | |
,,O | |
consistent,O | |
with,O | |
a,O | |
dominant,O | |
gain,O | |
-,O | |
of,O | |
-,O | |
function,O | |
phenotype,O | |
in,O | |
the,O | |
heterozygous,O | |
proband,O | |
.,O | |
, | |
This,O | |
work,O | |
identifies,O | |
SCN8A,B-Gene | |
as,O | |
the,O | |
fifth,O | |
sodium,O | |
-,O | |
channel,O | |
gene,O | |
to,O | |
be,O | |
mutated,O | |
in,O | |
epilepsy,O | |
and,O | |
demonstrates,O | |
the,O | |
value,O | |
of,O | |
WGS,O | |
for,O | |
the,O | |
identification,O | |
of,O | |
pathogenic,O | |
mutations,O | |
causing,O | |
severe,O | |
,,O | |
sporadic,O | |
neurological,O | |
disorders,O | |
.,O | |
, | |
#12204007 | |
Identification,O | |
of,O | |
mutations,O | |
of,O | |
Bruton,B-Gene | |
's,I-Gene | |
tyrosine,I-Gene | |
kinase,I-Gene | |
gene,O | |
(,B-Gene | |
BTK,I-Gene | |
),I-Gene | |
in,O | |
Brazilian,O | |
patients,O | |
with,O | |
X,O | |
-,O | |
linked,O | |
agammaglobulinemia,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
the,O | |
Bruton,B-Gene | |
tyrosine,I-Gene | |
kinase,I-Gene | |
(,B-Gene | |
BTK,I-Gene | |
),I-Gene | |
gene,O | |
are,O | |
responsible,O | |
for,O | |
X,O | |
-,O | |
linked,O | |
agammaglobulinemia,O | |
(,O | |
XLA,O | |
),O | |
,,O | |
which,O | |
is,O | |
characterized,O | |
by,O | |
recurrent,O | |
bacterial,O | |
infections,O | |
,,O | |
profound,O | |
hypogammaglobulinemia,O | |
,,O | |
and,O | |
decreased,O | |
numbers,O | |
of,O | |
mature,O | |
B,O | |
cells,O | |
in,O | |
the,O | |
peripheral,O | |
blood,O | |
.,O | |
, | |
We,O | |
evaluated,O | |
17,O | |
male,O | |
Brazilian,O | |
patients,O | |
from,O | |
13,O | |
unrelated,O | |
families,O | |
who,O | |
showed,O | |
markedly,O | |
reduced,O | |
numbers,O | |
of,O | |
blood,O | |
B,O | |
cells,O | |
and,O | |
hypogammaglobulinemia,O | |
.,O | |
, | |
BTK,B-Gene | |
gene,O | |
analysis,O | |
detected,O | |
mutations,O | |
in,O | |
10,O | |
of,O | |
the,O | |
13,O | |
presumed,O | |
XLA,O | |
families,O | |
.,O | |
, | |
Seven,O | |
mutations,O | |
(,B-SNP | |
Q196X,I-SNP | |
,,I-SNP | |
G613D,B-SNP | |
,,I-SNP | |
R28L,B-SNP | |
,,I-SNP | |
251,B-SNP | |
-,I-SNP | |
273del,I-SNP | |
,,I-SNP | |
Q234X,B-SNP | |
,,I-SNP | |
H364P,B-SNP | |
,,I-SNP | |
and,O | |
R13X,B-SNP | |
),I-SNP | |
had,O | |
been,O | |
reported,O | |
previously,O | |
,,O | |
whereas,O | |
the,O | |
remaining,O | |
three,O | |
mutations,O | |
(,B-SNP | |
M501,I-SNP | |
T,I-SNP | |
,,I-SNP | |
IVS15,B-SNP | |
+,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
C,I-SNP | |
,,I-SNP | |
and,O | |
IVS14,B-SNP | |
+,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
A,I-SNP | |
),I-SNP | |
were,O | |
novel,O | |
.,O | |
, | |
Mutation,O | |
IVS15,B-SNP | |
+,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
C,I-SNP | |
occurred,O | |
in,O | |
a,O | |
splice,O | |
donor,O | |
site,O | |
and,O | |
caused,O | |
exons,O | |
15,O | |
and,O | |
16,O | |
to,O | |
be,O | |
skipped,O | |
,,O | |
and,O | |
IVS14,B-SNP | |
+,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
A,I-SNP | |
might,O | |
cause,O | |
exon,O | |
14,O | |
to,O | |
be,O | |
skipped,O | |
.,O | |
, | |
Flow,O | |
cytometry,O | |
revealed,O | |
deficient,O | |
expression,O | |
of,O | |
BTK,B-Gene | |
protein,O | |
in,O | |
10,O | |
of,O | |
the,O | |
13,O | |
families,O | |
.,O | |
, | |
This,O | |
is,O | |
the,O | |
first,O | |
report,O | |
of,O | |
the,O | |
diagnosis,O | |
of,O | |
XLA,O | |
by,O | |
analysis,O | |
of,O | |
mutations,O | |
of,O | |
the,O | |
BTK,B-Gene | |
gene,O | |
in,O | |
Brazilian,O | |
patients,O | |
.,O | |
, | |
#9915968 | |
The,O | |
Glu318Gly,B-SNP | |
substitution,O | |
in,O | |
presenilin,B-Gene | |
1,I-Gene | |
is,O | |
not,O | |
causally,O | |
related,O | |
to,O | |
Alzheimer,O | |
disease,O | |
.,O | |
, | |
#22795537 | |
De,O | |
novo,O | |
mutations,O | |
in,O | |
MLL,B-Gene | |
cause,O | |
Wiedemann,O | |
-,O | |
Steiner,O | |
syndrome,O | |
.,O | |
, | |
Excessive,O | |
growth,O | |
of,O | |
terminal,O | |
hair,O | |
around,O | |
the,O | |
elbows,O | |
(,O | |
hypertrichosis,O | |
cubiti,O | |
),O | |
has,O | |
been,O | |
reported,O | |
both,O | |
in,O | |
isolation,O | |
and,O | |
in,O | |
association,O | |
with,O | |
a,O | |
variable,O | |
spectrum,O | |
of,O | |
associated,O | |
phenotypic,O | |
features,O | |
.,O | |
, | |
We,O | |
identified,O | |
a,O | |
cohort,O | |
of,O | |
six,O | |
individuals,O | |
with,O | |
hypertrichosis,O | |
cubiti,O | |
associated,O | |
with,O | |
short,O | |
stature,O | |
,,O | |
intellectual,O | |
disability,O | |
,,O | |
and,O | |
a,O | |
distinctive,O | |
facial,O | |
appearance,O | |
,,O | |
consistent,O | |
with,O | |
a,O | |
diagnosis,O | |
of,O | |
Wiedemann,O | |
-,O | |
Steiner,O | |
syndrome,O | |
(,O | |
WSS,O | |
),O | |
.,O | |
, | |
Utilizing,O | |
a,O | |
whole,O | |
-,O | |
exome,O | |
sequencing,O | |
approach,O | |
,,O | |
we,O | |
identified,O | |
de,O | |
novo,O | |
mutations,O | |
in,O | |
MLL,B-Gene | |
in,O | |
five,O | |
of,O | |
the,O | |
six,O | |
individuals,O | |
.,O | |
, | |
MLL,B-Gene | |
encodes,O | |
a,O | |
histone,O | |
methyltransferase,O | |
that,O | |
regulates,O | |
chromatin,O | |
-,O | |
mediated,O | |
transcription,O | |
through,O | |
the,O | |
catalysis,O | |
of,O | |
methylation,O | |
of,O | |
histone,O | |
H3K4,O | |
.,O | |
, | |
Each,O | |
of,O | |
the,O | |
five,O | |
mutations,O | |
is,O | |
predicted,O | |
to,O | |
result,O | |
in,O | |
premature,O | |
termination,O | |
of,O | |
the,O | |
protein,O | |
product,O | |
.,O | |
, | |
Furthermore,O | |
,,O | |
we,O | |
demonstrate,O | |
that,O | |
transcripts,O | |
arising,O | |
from,O | |
the,O | |
mutant,O | |
alleles,O | |
are,O | |
subject,O | |
to,O | |
nonsense,O | |
-,O | |
mediated,O | |
decay,O | |
.,O | |
, | |
These,O | |
findings,O | |
define,O | |
the,O | |
genetic,O | |
basis,O | |
of,O | |
WSS,O | |
,,O | |
provide,O | |
additional,O | |
evidence,O | |
for,O | |
the,O | |
role,O | |
of,O | |
haploinsufficency,O | |
of,O | |
histone,O | |
-,O | |
modification,O | |
enzymes,O | |
in,O | |
multiple,O | |
-,O | |
congenital,O | |
-,O | |
anomaly,O | |
syndromes,O | |
,,O | |
and,O | |
further,O | |
illustrate,O | |
the,O | |
importance,O | |
of,O | |
the,O | |
regulation,O | |
of,O | |
histone,O | |
modification,O | |
in,O | |
development,O | |
.,O | |
, | |
#12740763 | |
Identification,O | |
of,O | |
a,O | |
novel,O | |
gene,O | |
and,O | |
a,O | |
common,O | |
variant,O | |
associated,O | |
with,O | |
uric,O | |
acid,O | |
nephrolithiasis,O | |
in,O | |
a,O | |
Sardinian,O | |
genetic,O | |
isolate,O | |
.,O | |
, | |
Uric,O | |
acid,O | |
nephrolithiasis,O | |
(,O | |
UAN,O | |
),O | |
is,O | |
a,O | |
common,O | |
disease,O | |
with,O | |
an,O | |
established,O | |
genetic,O | |
component,O | |
that,O | |
presents,O | |
a,O | |
complex,O | |
mode,O | |
of,O | |
inheritance,O | |
.,O | |
, | |
While,O | |
studying,O | |
an,O | |
ancient,O | |
founder,O | |
population,O | |
in,O | |
Talana,O | |
,,O | |
a,O | |
village,O | |
in,O | |
Sardinia,O | |
,,O | |
we,O | |
recently,O | |
identified,O | |
a,O | |
susceptibility,O | |
locus,O | |
of,O | |
approximately,O | |
2.5,O | |
cM,O | |
for,O | |
UAN,O | |
on,O | |
10q21,O | |
-,O | |
q22,O | |
in,O | |
a,O | |
relatively,O | |
small,O | |
sample,O | |
that,O | |
was,O | |
carefully,O | |
selected,O | |
through,O | |
genealogical,O | |
information,O | |
.,O | |
, | |
To,O | |
refine,O | |
the,O | |
critical,O | |
region,O | |
and,O | |
to,O | |
identify,O | |
the,O | |
susceptibility,O | |
gene,O | |
,,O | |
we,O | |
extended,O | |
our,O | |
analysis,O | |
to,O | |
severely,O | |
affected,O | |
subjects,O | |
from,O | |
the,O | |
same,O | |
village,O | |
.,O | |
, | |
We,O | |
confirm,O | |
the,O | |
involvement,O | |
of,O | |
this,O | |
region,O | |
in,O | |
UAN,O | |
through,O | |
identical,O | |
-,O | |
by,O | |
-,O | |
descent,O | |
sharing,O | |
and,O | |
autozygosity,O | |
mapping,O | |
,,O | |
and,O | |
we,O | |
refine,O | |
the,O | |
critical,O | |
region,O | |
to,O | |
an,O | |
interval,O | |
of,O | |
approximately,O | |
67,O | |
kb,O | |
associated,O | |
with,O | |
UAN,O | |
by,O | |
linkage,O | |
-,O | |
disequilibrium,O | |
mapping,O | |
.,O | |
, | |
After,O | |
inspecting,O | |
the,O | |
genomic,O | |
sequences,O | |
available,O | |
in,O | |
public,O | |
databases,O | |
,,O | |
we,O | |
determined,O | |
that,O | |
a,O | |
novel,O | |
gene,O | |
overlaps,O | |
this,O | |
interval,O | |
.,O | |
, | |
This,O | |
gene,O | |
is,O | |
divided,O | |
into,O | |
15,O | |
exons,O | |
,,O | |
spanning,O | |
a,O | |
region,O | |
of,O | |
approximately,O | |
300,O | |
kb,O | |
and,O | |
generating,O | |
at,O | |
least,O | |
four,O | |
different,O | |
proteins,O | |
(,O | |
407,O | |
,,O | |
333,O | |
,,O | |
462,O | |
,,O | |
and,O | |
216,O | |
amino,O | |
acids,O | |
),O | |
.,O | |
, | |
Interestingly,O | |
,,O | |
the,O | |
last,O | |
isoform,O | |
was,O | |
completely,O | |
included,O | |
in,O | |
the,O | |
67,O | |
-,O | |
kb,O | |
associated,O | |
interval,O | |
.,O | |
, | |
Computer,O | |
-,O | |
assisted,O | |
analysis,O | |
of,O | |
this,O | |
isoform,O | |
revealed,O | |
at,O | |
least,O | |
one,O | |
membrane,O | |
-,O | |
spanning,O | |
domain,O | |
and,O | |
several,O | |
N-,O | |
and,O | |
O,O | |
-,O | |
glycosylation,O | |
consensus,O | |
sites,O | |
at,O | |
N,O | |
-,O | |
termini,O | |
,,O | |
suggesting,O | |
that,O | |
it,O | |
could,O | |
be,O | |
an,O | |
integral,O | |
membrane,O | |
protein,O | |
.,O | |
, | |
Mutational,O | |
analysis,O | |
shows,O | |
that,O | |
a,O | |
coding,O | |
nucleotide,O | |
variant,O | |
(,B-SNP | |
Ala62Thr,I-SNP | |
),I-SNP | |
,,O | |
causing,O | |
a,O | |
missense,O | |
in,O | |
exon,O | |
12,O | |
,,O | |
is,O | |
in,O | |
strong,O | |
association,O | |
with,O | |
UAN,O | |
(,O | |
P=.0051,O | |
),O | |
.,O | |
, | |
Moreover,O | |
,,O | |
Ala62Thr,B-SNP | |
modifies,O | |
predicted,O | |
protein,O | |
secondary,O | |
structure,O | |
,,O | |
suggesting,O | |
that,O | |
it,O | |
may,O | |
have,O | |
a,O | |
role,O | |
in,O | |
UAN,O | |
etiology,O | |
.,O | |
, | |
The,O | |
present,O | |
study,O | |
underscores,O | |
the,O | |
value,O | |
of,O | |
our,O | |
small,O | |
,,O | |
genealogically,O | |
well,O | |
-,O | |
characterized,O | |
,,O | |
isolated,O | |
population,O | |
as,O | |
a,O | |
model,O | |
for,O | |
the,O | |
identification,O | |
of,O | |
susceptibility,O | |
genes,O | |
underlying,O | |
complex,O | |
diseases,O | |
.,O | |
, | |
Indeed,O | |
,,O | |
using,O | |
a,O | |
relatively,O | |
small,O | |
sample,O | |
of,O | |
affected,O | |
and,O | |
unaffected,O | |
subjects,O | |
,,O | |
we,O | |
identified,O | |
a,O | |
candidate,O | |
gene,O | |
for,O | |
multifactorial,O | |
UAN,O | |
.,O | |
, | |
#8352278 | |
Statistical,O | |
evaluation,O | |
of,O | |
multiple,O | |
-,O | |
locus,O | |
linkage,O | |
data,O | |
in,O | |
experimental,O | |
species,O | |
and,O | |
its,O | |
relevance,O | |
to,O | |
human,O | |
studies,O | |
:,O | |
application,O | |
to,O | |
nonobese,O | |
diabetic,O | |
(,O | |
NOD,O | |
),O | |
mouse,O | |
and,O | |
human,O | |
insulin,O | |
-,O | |
dependent,O | |
diabetes,O | |
mellitus,O | |
(,O | |
IDDM,O | |
),O | |
.,O | |
, | |
Common,O | |
,,O | |
familial,O | |
human,O | |
disorders,O | |
generally,O | |
do,O | |
not,O | |
follow,O | |
Mendelian,O | |
inheritance,O | |
patterns,O | |
,,O | |
presumably,O | |
because,O | |
multiple,O | |
loci,O | |
are,O | |
involved,O | |
in,O | |
disease,O | |
susceptibility,O | |
.,O | |
, | |
One,O | |
approach,O | |
to,O | |
mapping,O | |
genes,O | |
for,O | |
such,O | |
traits,O | |
in,O | |
humans,O | |
is,O | |
to,O | |
first,O | |
study,O | |
an,O | |
analogous,O | |
form,O | |
in,O | |
an,O | |
animal,O | |
model,O | |
,,O | |
such,O | |
as,O | |
mouse,O | |
,,O | |
by,O | |
using,O | |
inbred,O | |
strains,O | |
and,O | |
backcross,O | |
experiments,O | |
.,O | |
, | |
Here,O | |
we,O | |
describe,O | |
methodology,O | |
for,O | |
analyzing,O | |
multiple,O | |
-,O | |
locus,O | |
linkage,O | |
data,O | |
from,O | |
such,O | |
experimental,O | |
backcrosses,O | |
,,O | |
particularly,O | |
in,O | |
light,O | |
of,O | |
multilocus,O | |
genetic,O | |
models,O | |
,,O | |
including,O | |
the,O | |
effects,O | |
of,O | |
epistasis,O | |
.,O | |
, | |
We,O | |
illustrate,O | |
these,O | |
methods,O | |
by,O | |
using,O | |
data,O | |
from,O | |
backcrosses,O | |
involving,O | |
nonobese,O | |
diabetic,O | |
mouse,O | |
,,O | |
which,O | |
serves,O | |
as,O | |
an,O | |
animal,O | |
model,O | |
for,O | |
human,O | |
insulin,O | |
-,O | |
dependent,O | |
diabetes,O | |
mellitus,O | |
.,O | |
, | |
We,O | |
show,O | |
that,O | |
it,O | |
is,O | |
likely,O | |
that,O | |
a,O | |
minimum,O | |
of,O | |
nine,O | |
loci,O | |
contribute,O | |
to,O | |
susceptibility,O | |
,,O | |
with,O | |
strong,O | |
epistasis,O | |
effects,O | |
among,O | |
these,O | |
loci,O | |
.,O | |
, | |
Three,O | |
of,O | |
the,O | |
loci,O | |
actually,O | |
confer,O | |
a,O | |
protective,O | |
effect,O | |
in,O | |
the,O | |
homozygote,O | |
,,O | |
compared,O | |
with,O | |
the,O | |
heterozygote,O | |
.,O | |
, | |
Further,O | |
,,O | |
we,O | |
discuss,O | |
the,O | |
relevance,O | |
of,O | |
these,O | |
studies,O | |
for,O | |
analogous,O | |
studies,O | |
of,O | |
the,O | |
human,O | |
form,O | |
of,O | |
the,O | |
trait,O | |
.,O | |
, | |
Specifically,O | |
,,O | |
we,O | |
show,O | |
that,O | |
the,O | |
magnitude,O | |
of,O | |
the,O | |
gene,O | |
effect,O | |
in,O | |
the,O | |
experimental,O | |
backcross,O | |
is,O | |
likely,O | |
to,O | |
correlate,O | |
only,O | |
weakly,O | |
,,O | |
at,O | |
best,O | |
,,O | |
with,O | |
the,O | |
expected,O | |
magnitude,O | |
of,O | |
effect,O | |
for,O | |
a,O | |
human,O | |
form,O | |
,,O | |
because,O | |
in,O | |
humans,O | |
the,O | |
gene,O | |
effect,O | |
will,O | |
depend,O | |
more,O | |
heavily,O | |
on,O | |
disease,O | |
allele,O | |
frequencies,O | |
than,O | |
on,O | |
the,O | |
observed,O | |
penetrance,O | |
ratios,O | |
;,O | |
such,O | |
allele,O | |
frequencies,O | |
are,O | |
unpredictable,O | |
.,O | |
, | |
Hence,O | |
,,O | |
the,O | |
major,O | |
benefit,O | |
from,O | |
animal,O | |
studies,O | |
may,O | |
be,O | |
a,O | |
better,O | |
understanding,O | |
of,O | |
the,O | |
disease,O | |
process,O | |
itself,O | |
,,O | |
rather,O | |
than,O | |
identification,O | |
of,O | |
cells,O | |
through,O | |
comparison,O | |
mapping,O | |
in,O | |
humans,O | |
by,O | |
using,O | |
regions,O | |
of,O | |
homology,O | |
.,O | |
, | |
#1609807 | |
Anticipation,O | |
legitimized,O | |
:,O | |
unstable,O | |
DNA,O | |
to,O | |
the,O | |
rescue,O | |
.,O | |
, | |
#11951177 | |
High,O | |
-,O | |
throughput,O | |
analysis,O | |
of,O | |
subtelomeric,O | |
chromosome,O | |
rearrangements,O | |
by,O | |
use,O | |
of,O | |
array,O | |
-,O | |
based,O | |
comparative,O | |
genomic,O | |
hybridization,O | |
.,O | |
, | |
Telomeric,O | |
chromosome,O | |
rearrangements,O | |
may,O | |
cause,O | |
mental,O | |
retardation,O | |
,,O | |
congenital,O | |
anomalies,O | |
,,O | |
and,O | |
miscarriages,O | |
.,O | |
, | |
Automated,O | |
detection,O | |
of,O | |
subtle,O | |
deletions,O | |
or,O | |
duplications,O | |
involving,O | |
telomeres,O | |
is,O | |
essential,O | |
for,O | |
high,O | |
-,O | |
throughput,O | |
diagnosis,O | |
,,O | |
but,O | |
impossible,O | |
when,O | |
conventional,O | |
cytogenetic,O | |
methods,O | |
are,O | |
used,O | |
.,O | |
, | |
Array,O | |
-,O | |
based,O | |
comparative,O | |
genomic,O | |
hybridization,O | |
(,O | |
CGH,O | |
),O | |
allows,O | |
high,O | |
-,O | |
resolution,O | |
screening,O | |
of,O | |
copy,O | |
number,O | |
abnormalities,O | |
by,O | |
hybridizing,O | |
differentially,O | |
labeled,O | |
test,O | |
and,O | |
reference,O | |
genomes,O | |
to,O | |
arrays,O | |
of,O | |
robotically,O | |
spotted,O | |
clones,O | |
.,O | |
, | |
To,O | |
assess,O | |
the,O | |
applicability,O | |
of,O | |
this,O | |
technique,O | |
in,O | |
the,O | |
diagnosis,O | |
of,O | |
(,O | |
sub)telomeric,O | |
imbalances,O | |
,,O | |
we,O | |
here,O | |
describe,O | |
a,O | |
blinded,O | |
study,O | |
,,O | |
in,O | |
which,O | |
DNA,O | |
from,O | |
20,O | |
patients,O | |
with,O | |
known,O | |
cytogenetic,O | |
abnormalities,O | |
involving,O | |
one,O | |
or,O | |
more,O | |
telomeres,O | |
was,O | |
hybridized,O | |
to,O | |
an,O | |
array,O | |
containing,O | |
a,O | |
validated,O | |
set,O | |
of,O | |
human,O | |
-,O | |
chromosome,O | |
-,O | |
specific,O | |
(,O | |
sub)telomere,O | |
probes,O | |
.,O | |
, | |
Single,O | |
-,O | |
copy,O | |
-,O | |
number,O | |
gains,O | |
and,O | |
losses,O | |
were,O | |
accurately,O | |
detected,O | |
on,O | |
these,O | |
arrays,O | |
,,O | |
and,O | |
an,O | |
excellent,O | |
concordance,O | |
between,O | |
the,O | |
original,O | |
cytogenetic,O | |
diagnosis,O | |
and,O | |
the,O | |
array,O | |
-,O | |
based,O | |
CGH,O | |
diagnosis,O | |
was,O | |
obtained,O | |
by,O | |
use,O | |
of,O | |
a,O | |
single,O | |
hybridization,O | |
.,O | |
, | |
In,O | |
addition,O | |
to,O | |
the,O | |
previously,O | |
identified,O | |
cytogenetic,O | |
changes,O | |
,,O | |
array,O | |
-,O | |
based,O | |
CGH,O | |
revealed,O | |
additional,O | |
telomere,O | |
rearrangements,O | |
in,O | |
3,O | |
of,O | |
the,O | |
20,O | |
patients,O | |
studied,O | |
.,O | |
, | |
The,O | |
robustness,O | |
and,O | |
simplicity,O | |
of,O | |
this,O | |
array,O | |
-,O | |
based,O | |
telomere,O | |
copy,O | |
-,O | |
number,O | |
screening,O | |
make,O | |
it,O | |
highly,O | |
suited,O | |
for,O | |
introduction,O | |
into,O | |
the,O | |
clinic,O | |
as,O | |
a,O | |
rapid,O | |
and,O | |
sensitive,O | |
automated,O | |
diagnostic,O | |
procedure,O | |
.,O | |
, | |
#11385711 | |
The,O | |
R71,B-SNP | |
G,I-SNP | |
BRCA1,B-Gene | |
is,O | |
a,O | |
founder,O | |
Spanish,O | |
mutation,O | |
and,O | |
leads,O | |
to,O | |
aberrant,O | |
splicing,O | |
of,O | |
the,O | |
transcript,O | |
.,O | |
, | |
In,O | |
a,O | |
BRCA1,B-Gene | |
screening,O | |
in,O | |
familial,O | |
breast,O | |
cancer,O | |
carried,O | |
out,O | |
in,O | |
different,O | |
centres,O | |
in,O | |
Spain,O | |
,,O | |
France,O | |
,,O | |
and,O | |
United,O | |
Kingdom,O | |
,,O | |
a,O | |
missense,O | |
mutation,O | |
330A,B-SNP | |
>,I-SNP | |
G,I-SNP | |
which,O | |
results,O | |
in,O | |
a,O | |
Arg,B-SNP | |
to,I-SNP | |
Gly,I-SNP | |
change,I-SNP | |
at,I-SNP | |
codon,I-SNP | |
71,I-SNP | |
(,B-SNP | |
R71,I-SNP | |
G,I-SNP | |
),I-SNP | |
was,O | |
independently,O | |
identified,O | |
in,O | |
6,O | |
families,O | |
,,O | |
all,O | |
of,O | |
them,O | |
with,O | |
Spanish,O | |
ancestors,O | |
.,O | |
, | |
This,O | |
residue,O | |
coincides,O | |
with,O | |
the,O | |
-2,O | |
position,O | |
of,O | |
the,O | |
exon,O | |
5,O | |
donor,O | |
splice,O | |
site,O | |
.,O | |
, | |
We,O | |
further,O | |
investigated,O | |
the,O | |
effect,O | |
of,O | |
this,O | |
base,O | |
substitution,O | |
on,O | |
the,O | |
splicing,O | |
of,O | |
BRCA1,B-Gene | |
mRNA,O | |
.,O | |
, | |
The,O | |
sequence,O | |
analysis,O | |
of,O | |
the,O | |
cDNA,O | |
indicated,O | |
that,O | |
22,O | |
bp,O | |
of,O | |
exon,O | |
5,O | |
were,O | |
deleted,O | |
,,O | |
creating,O | |
with,O | |
the,O | |
first,O | |
bases,O | |
of,O | |
exon,O | |
6,O | |
a,O | |
termination,O | |
codon,O | |
at,O | |
position,O | |
64,O | |
,,O | |
which,O | |
results,O | |
in,O | |
a,O | |
truncated,O | |
protein,O | |
.,O | |
, | |
The,O | |
BRCA1,B-Gene | |
haplotype,O | |
of,O | |
the,O | |
R71,B-SNP | |
G,I-SNP | |
carrier,O | |
patients,O | |
and,O | |
Spanish,O | |
controls,O | |
was,O | |
analysed,O | |
by,O | |
use,O | |
of,O | |
six,O | |
microsatellites,O | |
located,O | |
within,O | |
or,O | |
near,O | |
BRCA1,B-Gene | |
.,I-Gene | |
, | |
Our,O | |
results,O | |
are,O | |
consistent,O | |
with,O | |
the,O | |
possibility,O | |
that,O | |
these,O | |
families,O | |
shared,O | |
a,O | |
common,O | |
ancestry,O | |
with,O | |
BRCA1,B-Gene | |
R71,B-SNP | |
G,I-SNP | |
being,O | |
a,O | |
founder,O | |
mutation,O | |
of,O | |
Spanish,O | |
origin,O | |
.,O | |
, | |
#17160889 | |
Identification,O | |
of,O | |
a,O | |
novel,O | |
BBS,O | |
gene,O | |
(,B-Gene | |
BBS12,I-Gene | |
),I-Gene | |
highlights,O | |
the,O | |
major,O | |
role,O | |
of,O | |
a,O | |
vertebrate,O | |
-,O | |
specific,O | |
branch,O | |
of,O | |
chaperonin,O | |
-,O | |
related,O | |
proteins,O | |
in,O | |
Bardet,O | |
-,O | |
Biedl,O | |
syndrome,O | |
.,O | |
, | |
Bardet,O | |
-,O | |
Biedl,O | |
syndrome,O | |
(,O | |
BBS,O | |
),O | |
is,O | |
primarily,O | |
an,O | |
autosomal,O | |
recessive,O | |
ciliopathy,O | |
characterized,O | |
by,O | |
progressive,O | |
retinal,O | |
degeneration,O | |
,,O | |
obesity,O | |
,,O | |
cognitive,O | |
impairment,O | |
,,O | |
polydactyly,O | |
,,O | |
and,O | |
kidney,O | |
anomalies,O | |
.,O | |
, | |
The,O | |
disorder,O | |
is,O | |
genetically,O | |
heterogeneous,O | |
,,O | |
with,O | |
11,O | |
BBS,O | |
genes,O | |
identified,O | |
to,O | |
date,O | |
,,O | |
which,O | |
account,O | |
for,O | |
~70,O | |
%,O | |
of,O | |
affected,O | |
families,O | |
.,O | |
, | |
We,O | |
have,O | |
combined,O | |
single,O | |
-,O | |
nucleotide,O | |
-,O | |
polymorphism,O | |
array,O | |
homozygosity,O | |
mapping,O | |
with,O | |
in,O | |
silico,O | |
analysis,O | |
to,O | |
identify,O | |
a,O | |
new,O | |
BBS,O | |
gene,O | |
,,O | |
BBS12,B-Gene | |
.,I-Gene | |
, | |
Patients,O | |
from,O | |
two,O | |
Gypsy,O | |
families,O | |
were,O | |
homozygous,O | |
and,O | |
haploidentical,O | |
in,O | |
a,O | |
6,O | |
-,O | |
Mb,O | |
region,O | |
of,O | |
chromosome,O | |
4q27,O | |
.,O | |
, | |
FLJ35630,B-Gene | |
was,O | |
selected,O | |
as,O | |
a,O | |
candidate,O | |
gene,O | |
,,O | |
because,O | |
it,O | |
was,O | |
predicted,O | |
to,O | |
encode,O | |
a,O | |
protein,O | |
with,O | |
similarity,O | |
to,O | |
members,O | |
of,O | |
the,O | |
type,O | |
II,O | |
chaperonin,O | |
superfamily,O | |
,,O | |
which,O | |
includes,O | |
BBS6,B-Gene | |
and,O | |
BBS10,B-Gene | |
.,I-Gene | |
, | |
We,O | |
found,O | |
pathogenic,O | |
mutations,O | |
in,O | |
both,O | |
Gypsy,O | |
families,O | |
,,O | |
as,O | |
well,O | |
as,O | |
in,O | |
14,O | |
other,O | |
families,O | |
of,O | |
various,O | |
ethnic,O | |
backgrounds,O | |
,,O | |
indicating,O | |
that,O | |
BBS12,B-Gene | |
accounts,O | |
for,O | |
approximately,O | |
5,O | |
%,O | |
of,O | |
all,O | |
BBS,O | |
cases,O | |
.,O | |
, | |
BBS12,B-Gene | |
is,O | |
vertebrate,O | |
specific,O | |
and,O | |
,,O | |
together,O | |
with,O | |
BBS6,B-Gene | |
and,O | |
BBS10,B-Gene | |
,,I-Gene | |
defines,O | |
a,O | |
novel,O | |
branch,O | |
of,O | |
the,O | |
type,O | |
II,O | |
chaperonin,O | |
superfamily,O | |
.,O | |
, | |
These,O | |
three,O | |
genes,O | |
are,O | |
characterized,O | |
by,O | |
unusually,O | |
rapid,O | |
evolution,O | |
and,O | |
are,O | |
likely,O | |
to,O | |
perform,O | |
ciliary,O | |
functions,O | |
specific,O | |
to,O | |
vertebrates,O | |
that,O | |
are,O | |
important,O | |
in,O | |
the,O | |
pathophysiology,O | |
of,O | |
the,O | |
syndrome,O | |
,,O | |
and,O | |
together,O | |
they,O | |
account,O | |
for,O | |
about,O | |
one,O | |
-,O | |
third,O | |
of,O | |
the,O | |
total,O | |
BBS,O | |
mutational,O | |
load,O | |
.,O | |
, | |
Consistent,O | |
with,O | |
this,O | |
notion,O | |
,,O | |
suppression,O | |
of,O | |
each,O | |
family,O | |
member,O | |
in,O | |
zebrafish,O | |
yielded,O | |
gastrulation,O | |
-,O | |
movement,O | |
defects,O | |
characteristic,O | |
of,O | |
other,O | |
BBS,O | |
morphants,O | |
,,O | |
whereas,O | |
simultaneous,O | |
suppression,O | |
of,O | |
all,O | |
three,O | |
members,O | |
resulted,O | |
in,O | |
severely,O | |
affected,O | |
embryos,O | |
,,O | |
possibly,O | |
hinting,O | |
at,O | |
partial,O | |
functional,O | |
redundancy,O | |
within,O | |
this,O | |
protein,O | |
family,O | |
.,O | |
, | |
#10094560 | |
Characterization,O | |
of,O | |
eleven,O | |
novel,O | |
mutations,O | |
(,B-SNP | |
M45L,I-SNP | |
,,I-SNP | |
R119H,B-SNP | |
,,I-SNP | |
544delG,B-SNP | |
,,I-SNP | |
G145V,B-SNP | |
,,I-SNP | |
H154Y,B-SNP | |
,,I-SNP | |
C184Y,B-SNP | |
,,I-SNP | |
D289V,B-SNP | |
,,I-SNP | |
862,B-SNP | |
+,I-SNP | |
5A,I-SNP | |
,,I-SNP | |
1172delC,B-SNP | |
,,I-SNP | |
R411X,B-SNP | |
,,I-SNP | |
E459,B-SNP | |
K,I-SNP | |
),I-SNP | |
in,O | |
the,O | |
tissue,B-Gene | |
-,I-Gene | |
nonspecific,I-Gene | |
alkaline,I-Gene | |
phosphatase,I-Gene | |
(,B-Gene | |
TNSALP,I-Gene | |
),I-Gene | |
gene,O | |
in,O | |
patients,O | |
with,O | |
severe,O | |
hypophosphatasia,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
brief,O | |
no,O | |
.,O | |
217,O | |
.,O | |
, | |
Online,O | |
.,O | |
, | |
Hypophosphatasia,O | |
is,O | |
a,O | |
rare,O | |
inherited,O | |
disorder,O | |
characterized,O | |
by,O | |
defective,O | |
bone,O | |
mineralization,O | |
and,O | |
deficiency,O | |
of,O | |
serum,O | |
and,O | |
tissue,O | |
liver/,O | |
bone,O | |
/,O | |
kidney,O | |
tissue,B-Gene | |
alkaline,I-Gene | |
phosphatase,I-Gene | |
(,O | |
L,O | |
/,O | |
B,O | |
/,O | |
K,O | |
ALP,B-Gene | |
),I-Gene | |
activity,O | |
.,O | |
, | |
We,O | |
report,O | |
the,O | |
characterization,O | |
of,O | |
tissue,B-Gene | |
-,I-Gene | |
nonspecific,I-Gene | |
alkaline,I-Gene | |
phosphatase,I-Gene | |
(,B-Gene | |
TNSALP,I-Gene | |
),I-Gene | |
gene,O | |
mutations,O | |
in,O | |
a,O | |
series,O | |
of,O | |
9,O | |
families,O | |
affected,O | |
by,O | |
severe,O | |
hypophosphatasia,O | |
.,O | |
, | |
Fourteen,O | |
distinct,O | |
mutations,O | |
were,O | |
found,O | |
,,O | |
3,O | |
of,O | |
which,O | |
were,O | |
previously,O | |
reported,O | |
in,O | |
the,O | |
North,O | |
American,O | |
or,O | |
Japanese,O | |
populations,O | |
.,O | |
, | |
Seven,O | |
of,O | |
the,O | |
11,O | |
new,O | |
mutations,O | |
were,O | |
missense,O | |
mutations,O | |
(,B-SNP | |
M45L,I-SNP | |
,,I-SNP | |
R119H,B-SNP | |
,,I-SNP | |
G145V,B-SNP | |
,,I-SNP | |
C184Y,B-SNP | |
and,O | |
H154Y,B-SNP | |
,,I-SNP | |
D289V,B-SNP | |
,,I-SNP | |
E459,B-SNP | |
K,I-SNP | |
),I-SNP | |
,,O | |
the,O | |
four,O | |
others,O | |
were,O | |
2,O | |
single,O | |
nucleotide,O | |
deletions,O | |
(,B-SNP | |
544delG,I-SNP | |
and,O | |
1172delC,B-SNP | |
),I-SNP | |
,,O | |
a,O | |
mutation,O | |
affecting,O | |
donor,O | |
splice,O | |
site,O | |
(,B-SNP | |
862,I-SNP | |
+,I-SNP | |
5A,I-SNP | |
),I-SNP | |
and,O | |
a,O | |
nonsense,O | |
mutation,O | |
(,B-SNP | |
R411X,I-SNP | |
),I-SNP | |
.,O | |
, | |
#8477262 | |
Identification,O | |
of,O | |
mutations,O | |
in,O | |
Danish,O | |
choroideremia,O | |
families,O | |
.,O | |
, | |
We,O | |
have,O | |
searched,O | |
for,O | |
mutations,O | |
in,O | |
the,O | |
choroideremia,B-Gene | |
gene,O | |
(,B-Gene | |
CHM,I-Gene | |
),I-Gene | |
in,O | |
patients,O | |
from,O | |
12,O | |
Danish,O | |
families,O | |
in,O | |
which,O | |
CHM,O | |
is,O | |
segregating,O | |
.,O | |
, | |
Employing,O | |
polymerase,O | |
chain,O | |
reaction,O | |
(,O | |
PCR,O | |
),O | |
,,O | |
single,O | |
strand,O | |
conformation,O | |
polymorphism,O | |
(,O | |
SSCP,O | |
),O | |
analysis,O | |
,,O | |
and,O | |
direct,O | |
DNA,O | |
sequencing,O | |
,,O | |
different,O | |
mutations,O | |
have,O | |
been,O | |
identified,O | |
in,O | |
6,O | |
patients,O | |
.,O | |
, | |
All,O | |
the,O | |
mutations,O | |
will,O | |
interfere,O | |
with,O | |
the,O | |
correct,O | |
translation,O | |
of,O | |
the,O | |
mRNA,O | |
predicting,O | |
a,O | |
truncated,O | |
protein,O | |
or,O | |
no,O | |
gene,O | |
product,O | |
at,O | |
all,O | |
.,O | |
, | |
#12673796 | |
Detection,O | |
of,O | |
hotspot,O | |
mutations,O | |
and,O | |
polymorphisms,O | |
using,O | |
an,O | |
enhanced,O | |
PCR,O | |
-,O | |
RFLP,O | |
approach,O | |
.,O | |
, | |
Ethidium,O | |
gel,O | |
-,O | |
based,O | |
PCR,O | |
-,O | |
RFLP,O | |
is,O | |
widely,O | |
used,O | |
,,O | |
and,O | |
is,O | |
perhaps,O | |
the,O | |
simplest,O | |
method,O | |
for,O | |
detection,O | |
of,O | |
known,O | |
mutations,O | |
in,O | |
cancer,O | |
-,O | |
related,O | |
genes,O | |
and,O | |
for,O | |
genotyping,O | |
a,O | |
wide,O | |
range,O | |
of,O | |
other,O | |
human,O | |
diseases,O | |
.,O | |
, | |
However,O | |
,,O | |
its,O | |
application,O | |
is,O | |
limited,O | |
by,O | |
the,O | |
fact,O | |
that,O | |
it,O | |
can,O | |
only,O | |
detect,O | |
mutant,O | |
alleles,O | |
that,O | |
are,O | |
present,O | |
in,O | |
more,O | |
than,O | |
5,O | |
-,O | |
10,O | |
%,O | |
of,O | |
wild,O | |
-,O | |
type,O | |
alleles,O | |
.,O | |
, | |
Here,O | |
we,O | |
present,O | |
a,O | |
method,O | |
that,O | |
allows,O | |
a,O | |
1,O | |
-,O | |
2,O | |
order,O | |
enhancement,O | |
in,O | |
the,O | |
sensitivity,O | |
of,O | |
the,O | |
widely,O | |
used,O | |
PCR,O | |
-,O | |
RFLP,O | |
without,O | |
substantially,O | |
increasing,O | |
the,O | |
effort,O | |
and,O | |
cost,O | |
associated,O | |
with,O | |
it,O | |
.,O | |
, | |
This,O | |
method,O | |
is,O | |
a,O | |
modification,O | |
to,O | |
our,O | |
previously,O | |
reported,O | |
amplification,O | |
via,O | |
primer,O | |
ligation,O | |
at,O | |
the,O | |
mutation,O | |
(,O | |
APRIL,O | |
-,O | |
ATM,O | |
),O | |
method,O | |
,,O | |
which,O | |
utilizes,O | |
ligation,O | |
of,O | |
a,O | |
primer,O | |
at,O | |
a,O | |
restriction,O | |
site,O | |
formed,O | |
by,O | |
a,O | |
mutation,O | |
,,O | |
followed,O | |
by,O | |
a,O | |
ligation,O | |
-,O | |
mediated,O | |
PCR,O | |
amplification,O | |
which,O | |
amplifies,O | |
only,O | |
the,O | |
mutation,O | |
-,O | |
containing,O | |
DNA,O | |
molecules,O | |
.,O | |
, | |
By,O | |
combining,O | |
this,O | |
method,O | |
with,O | |
the,O | |
artificial,O | |
introduction,O | |
of,O | |
restriction,O | |
sites,O | |
during,O | |
PCR,O | |
,,O | |
we,O | |
demonstrate,O | |
that,O | |
assays,O | |
can,O | |
be,O | |
designed,O | |
and,O | |
validated,O | |
for,O | |
detecting,O | |
hot,O | |
-,O | |
spot,O | |
mutations,O | |
in,O | |
codons,O | |
273,O | |
,,O | |
158,O | |
,,O | |
and,O | |
248,O | |
of,O | |
the,O | |
TP53,B-Gene | |
gene,O | |
(,B-Gene | |
p53,I-Gene | |
),I-Gene | |
and,O | |
potentially,O | |
for,O | |
most,O | |
mutations,O | |
of,O | |
interest,O | |
.,O | |
, | |
This,O | |
approach,O | |
is,O | |
validated,O | |
by,O | |
using,O | |
samples,O | |
where,O | |
the,O | |
mutation,O | |
was,O | |
artificially,O | |
introduced,O | |
at,O | |
these,O | |
p53,O | |
positions,B-Gene | |
.,I-Gene | |
, | |
The,O | |
increased,O | |
sensitivity,O | |
offered,O | |
by,O | |
the,O | |
method,O | |
further,O | |
allows,O | |
us,O | |
to,O | |
rapidly,O | |
screen,O | |
for,O | |
low,O | |
frequency,O | |
polymorphisms,O | |
in,O | |
pooled,O | |
DNA,O | |
samples,O | |
.,O | |
, | |
The,O | |
frequency,O | |
of,O | |
an,O | |
MSH2,B-Gene | |
missense,O | |
polymorphism,O | |
(,B-SNP | |
965G,I-SNP | |
>,I-SNP | |
A,I-SNP | |
),I-SNP | |
was,O | |
quantified,O | |
in,O | |
pooled,O | |
genomic,O | |
DNA,O | |
samples,O | |
from,O | |
205,O | |
and,O | |
221,O | |
U.S.,O | |
and,O | |
Polish,O | |
colorectal,O | |
cancer,O | |
patients,O | |
,,O | |
respectively,O | |
,,O | |
and,O | |
an,O | |
equal,O | |
number,O | |
of,O | |
ethnicity,O | |
-,O | |
matched,O | |
controls,O | |
.,O | |
, | |
The,O | |
data,O | |
revealed,O | |
a,O | |
3,O | |
-,O | |
5,O | |
%,O | |
prevalence,O | |
of,O | |
this,O | |
polymorphism,O | |
in,O | |
the,O | |
patient,O | |
and,O | |
the,O | |
control,O | |
populations,O | |
.,O | |
, | |
Individual,O | |
sequencing,O | |
of,O | |
all,O | |
852,O | |
patient,O | |
samples,O | |
demonstrated,O | |
an,O | |
excellent,O | |
agreement,O | |
among,O | |
the,O | |
two,O | |
independent,O | |
approaches,O | |
.,O | |
, | |
The,O | |
present,O | |
enhanced,O | |
PCR,O | |
-,O | |
RFLP,O | |
reduces,O | |
the,O | |
effort,O | |
involved,O | |
in,O | |
high,O | |
throughput,O | |
polymorphism,O | |
studies,O | |
and,O | |
promises,O | |
to,O | |
find,O | |
applications,O | |
in,O | |
genotyping,O | |
and,O | |
association,O | |
studies,O | |
involving,O | |
low,O | |
frequency,O | |
polymorphisms,O | |
and,O | |
mutations,O | |
.,O | |
, | |
#21473986 | |
Human,O | |
and,O | |
mouse,O | |
mutations,O | |
in,O | |
WDR35,B-Gene | |
cause,O | |
short,O | |
-,O | |
rib,O | |
polydactyly,O | |
syndromes,O | |
due,O | |
to,O | |
abnormal,O | |
ciliogenesis,O | |
.,O | |
, | |
Defects,O | |
in,O | |
cilia,O | |
formation,O | |
and,O | |
function,O | |
result,O | |
in,O | |
a,O | |
range,O | |
of,O | |
human,O | |
skeletal,O | |
and,O | |
visceral,O | |
abnormalities,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
several,O | |
genes,O | |
have,O | |
been,O | |
identified,O | |
to,O | |
cause,O | |
a,O | |
proportion,O | |
of,O | |
these,O | |
disorders,O | |
,,O | |
some,O | |
of,O | |
which,O | |
display,O | |
genetic,O | |
(,O | |
locus,O | |
),O | |
heterogeneity,O | |
.,O | |
, | |
Mouse,O | |
models,O | |
are,O | |
valuable,O | |
for,O | |
dissecting,O | |
the,O | |
function,O | |
of,O | |
these,O | |
genes,O | |
,,O | |
as,O | |
well,O | |
as,O | |
for,O | |
more,O | |
detailed,O | |
analysis,O | |
of,O | |
the,O | |
underlying,O | |
developmental,O | |
defects,O | |
.,O | |
, | |
The,O | |
short,O | |
-,O | |
rib,O | |
polydactyly,O | |
(,O | |
SRP,O | |
),O | |
group,O | |
of,O | |
disorders,O | |
are,O | |
among,O | |
the,O | |
most,O | |
severe,O | |
human,O | |
phenotypes,O | |
caused,O | |
by,O | |
cilia,O | |
dysfunction,O | |
.,O | |
, | |
We,O | |
mapped,O | |
the,O | |
disease,O | |
locus,O | |
from,O | |
two,O | |
siblings,O | |
affected,O | |
by,O | |
a,O | |
severe,O | |
form,O | |
of,O | |
SRP,O | |
to,O | |
2p24,O | |
,,O | |
where,O | |
we,O | |
identified,O | |
an,O | |
in,O | |
-,O | |
frame,O | |
homozygous,O | |
deletion,O | |
of,O | |
exon,O | |
5,O | |
in,O | |
WDR35,B-Gene | |
.,I-Gene | |
, | |
We,O | |
subsequently,O | |
found,O | |
compound,O | |
heterozygous,O | |
missense,O | |
and,O | |
nonsense,O | |
mutations,O | |
in,O | |
WDR35,B-Gene | |
in,O | |
an,O | |
independent,O | |
second,O | |
case,O | |
with,O | |
a,O | |
similar,O | |
,,O | |
severe,O | |
SRP,O | |
phenotype,O | |
.,O | |
, | |
In,O | |
a,O | |
mouse,O | |
mutation,O | |
screen,O | |
for,O | |
developmental,O | |
phenotypes,O | |
,,O | |
we,O | |
identified,O | |
a,O | |
mutation,O | |
in,O | |
Wdr35,B-Gene | |
as,O | |
the,O | |
cause,O | |
of,O | |
midgestation,O | |
lethality,O | |
,,O | |
with,O | |
abnormalities,O | |
characteristic,O | |
of,O | |
defects,O | |
in,O | |
the,O | |
Hedgehog,O | |
signaling,O | |
pathway,O | |
.,O | |
, | |
We,O | |
show,O | |
that,O | |
endogenous,O | |
WDR35,B-Gene | |
localizes,O | |
to,O | |
cilia,O | |
and,O | |
centrosomes,O | |
throughout,O | |
the,O | |
developing,O | |
embryo,O | |
and,O | |
that,O | |
human,O | |
and,O | |
mouse,O | |
fibroblasts,O | |
lacking,O | |
the,O | |
protein,O | |
fail,O | |
to,O | |
produce,O | |
cilia,O | |
.,O | |
, | |
Through,O | |
structural,O | |
modeling,O | |
,,O | |
we,O | |
show,O | |
that,O | |
WDR35,B-Gene | |
has,O | |
strong,O | |
homology,O | |
to,O | |
the,O | |
COPI,B-Gene | |
coatamers,O | |
involved,O | |
in,O | |
vesicular,O | |
trafficking,O | |
and,O | |
that,O | |
human,O | |
SRP,O | |
mutations,O | |
affect,O | |
key,O | |
structural,O | |
elements,O | |
in,O | |
WDR35,B-Gene | |
.,I-Gene | |
, | |
Our,O | |
report,O | |
expands,O | |
,,O | |
and,O | |
sheds,O | |
new,O | |
light,O | |
on,O | |
,,O | |
the,O | |
pathogenesis,O | |
of,O | |
the,O | |
SRP,O | |
spectrum,O | |
of,O | |
ciliopathies,O | |
.,O | |
, | |
#11179018 | |
A,O | |
phase,O | |
1/2,O | |
clinical,O | |
trial,O | |
of,O | |
enzyme,O | |
replacement,O | |
in,O | |
fabry,O | |
disease,O | |
:,O | |
pharmacokinetic,O | |
,,O | |
substrate,O | |
clearance,O | |
,,O | |
and,O | |
safety,O | |
studies,O | |
.,O | |
, | |
Fabry,O | |
disease,O | |
results,O | |
from,O | |
deficient,O | |
alpha,O | |
-,O | |
galactosidase,O | |
A,O | |
(,O | |
alpha,O | |
-,O | |
Gal,O | |
A,O | |
),O | |
activity,O | |
and,O | |
the,O | |
pathologic,O | |
accumulation,O | |
of,O | |
the,O | |
globotriaosylceramide,O | |
(,O | |
GL-3,O | |
),O | |
and,O | |
related,O | |
glycosphingolipids,O | |
,,O | |
primarily,O | |
in,O | |
vascular,O | |
endothelial,O | |
lysosomes,O | |
.,O | |
, | |
Treatment,O | |
is,O | |
currently,O | |
palliative,O | |
,,O | |
and,O | |
affected,O | |
patients,O | |
generally,O | |
die,O | |
in,O | |
their,O | |
40s,O | |
or,O | |
50s,O | |
.,O | |
, | |
Preclinical,O | |
studies,O | |
of,O | |
recombinant,O | |
human,O | |
alpha,B-Gene | |
-,I-Gene | |
Gal,I-Gene | |
A,I-Gene | |
(,B-Gene | |
r,I-Gene | |
-,I-Gene | |
halphaGalA,I-Gene | |
),I-Gene | |
infusions,O | |
in,O | |
knockout,O | |
mice,O | |
demonstrated,O | |
reduction,O | |
of,O | |
GL-3,B-Gene | |
in,O | |
tissues,O | |
and,O | |
plasma,O | |
,,O | |
providing,O | |
rationale,O | |
for,O | |
a,O | |
phase,O | |
1/2,O | |
clinical,O | |
trial,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
report,O | |
a,O | |
single,O | |
-,O | |
center,O | |
,,O | |
open,O | |
-,O | |
label,O | |
,,O | |
dose,O | |
-,O | |
ranging,O | |
study,O | |
of,O | |
r,B-Gene | |
-,I-Gene | |
halphaGalA,I-Gene | |
treatment,O | |
in,O | |
15,O | |
patients,O | |
,,O | |
each,O | |
of,O | |
whom,O | |
received,O | |
five,O | |
infusions,O | |
at,O | |
one,O | |
of,O | |
five,O | |
dose,O | |
regimens,O | |
.,O | |
, | |
Intravenously,O | |
administered,O | |
r,B-Gene | |
-,I-Gene | |
halphaGalA,I-Gene | |
was,O | |
cleared,O | |
from,O | |
the,O | |
circulation,O | |
in,O | |
a,O | |
dose,O | |
-,O | |
dependent,O | |
manner,O | |
,,O | |
via,O | |
both,O | |
saturable,O | |
and,O | |
non,O | |
-,O | |
saturable,O | |
pathways,O | |
.,O | |
, | |
Rapid,O | |
and,O | |
marked,O | |
reductions,O | |
in,O | |
plasma,O | |
and,O | |
tissue,O | |
GL-3,B-Gene | |
were,O | |
observed,O | |
biochemically,O | |
,,O | |
histologically,O | |
,,O | |
and/or,O | |
ultrastructurally,O | |
.,O | |
, | |
Clearance,O | |
of,O | |
plasma,O | |
GL-3,B-Gene | |
was,O | |
dose,O | |
-,O | |
dependent,O | |
.,O | |
, | |
In,O | |
patients,O | |
with,O | |
pre-,O | |
and,O | |
posttreatment,O | |
biopsies,O | |
,,O | |
mean,O | |
GL-3,B-Gene | |
content,O | |
decreased,O | |
84,O | |
%,O | |
in,O | |
liver,O | |
(,O | |
n=13,O | |
),O | |
,,O | |
was,O | |
markedly,O | |
reduced,O | |
in,O | |
kidney,O | |
in,O | |
four,O | |
of,O | |
five,O | |
patients,O | |
,,O | |
and,O | |
after,O | |
five,O | |
doses,O | |
was,O | |
modestly,O | |
lowered,O | |
in,O | |
the,O | |
endomyocardium,O | |
of,O | |
four,O | |
of,O | |
seven,O | |
patients,O | |
.,O | |
, | |
GL-3,B-Gene | |
, | |
deposits,O | |
were,O | |
cleared,O | |
to,O | |
near,O | |
normal,O | |
or,O | |
were,O | |
markedly,O | |
reduced,O | |
in,O | |
the,O | |
vascular,O | |
endothelium,O | |
of,O | |
liver,O | |
,,O | |
skin,O | |
,,O | |
heart,O | |
,,O | |
and,O | |
kidney,O | |
,,O | |
on,O | |
the,O | |
basis,O | |
of,O | |
light-,O | |
and,O | |
electron,O | |
-,O | |
microscopic,O | |
evaluation,O | |
.,O | |
, | |
In,O | |
addition,O | |
,,O | |
patients,O | |
reported,O | |
less,O | |
pain,O | |
,,O | |
increased,O | |
ability,O | |
to,O | |
sweat,O | |
,,O | |
and,O | |
improved,O | |
quality,O | |
-,O | |
of,O | |
-,O | |
life,O | |
measures,O | |
.,O | |
, | |
Infusions,O | |
were,O | |
well,O | |
tolerated,O | |
;,O | |
four,O | |
patients,O | |
experienced,O | |
mild,O | |
-,O | |
to,O | |
-,O | |
moderate,O | |
reactions,O | |
,,O | |
suggestive,O | |
of,O | |
hypersensitivity,O | |
,,O | |
that,O | |
were,O | |
managed,O | |
conservatively,O | |
.,O | |
, | |
Of,O | |
15,O | |
patients,O | |
,,O | |
8,O | |
(,O | |
53,O | |
%,O | |
),O | |
developed,O | |
IgG,O | |
antibodies,O | |
to,O | |
r,O | |
-,O | |
halphaGalA,O | |
;,O | |
however,O | |
,,O | |
the,O | |
antibodies,O | |
were,O | |
not,O | |
neutralizing,O | |
,,O | |
as,O | |
indicated,O | |
by,O | |
unchanged,O | |
pharmacokinetic,O | |
values,O | |
for,O | |
infusions,O | |
1,O | |
and,O | |
5,O | |
.,O | |
, | |
This,O | |
study,O | |
provides,O | |
the,O | |
basis,O | |
for,O | |
a,O | |
phase,O | |
3,O | |
trial,O | |
of,O | |
enzyme,O | |
-,O | |
replacement,O | |
therapy,O | |
for,O | |
Fabry,O | |
disease,O | |
.,O | |
, | |
#16086324 | |
Comparison,O | |
of,O | |
yield,O | |
and,O | |
genotyping,O | |
performance,O | |
of,O | |
multiple,O | |
displacement,O | |
amplification,O | |
and,O | |
OmniPlex,O | |
whole,O | |
genome,O | |
amplified,O | |
DNA,O | |
generated,O | |
from,O | |
multiple,O | |
DNA,O | |
sources,O | |
.,O | |
, | |
The,O | |
promise,O | |
of,O | |
whole,O | |
genome,O | |
amplification,O | |
(,O | |
WGA,O | |
),O | |
is,O | |
that,O | |
genomic,O | |
DNA,O | |
(,O | |
gDNA,O | |
),O | |
quantity,O | |
will,O | |
not,O | |
limit,O | |
molecular,O | |
genetic,O | |
analyses,O | |
.,O | |
, | |
Multiple,O | |
displacement,O | |
amplification,O | |
(,O | |
MDA,O | |
),O | |
and,O | |
the,O | |
OmniPlex,O | |
PCR,O | |
-,O | |
based,O | |
WGA,O | |
protocols,O | |
were,O | |
evaluated,O | |
using,O | |
4,O | |
and,O | |
5,O | |
ng,O | |
of,O | |
input,O | |
gDNA,O | |
from,O | |
60,O | |
gDNA,O | |
samples,O | |
from,O | |
three,O | |
tissue,O | |
sources,O | |
(,O | |
mouthwash,O | |
,,O | |
buffy,O | |
coat,O | |
,,O | |
and,O | |
lymphoblast,O | |
),O | |
.,O | |
, | |
WGA,O | |
DNA,O | |
(,O | |
wgaDNA,O | |
),O | |
yield,O | |
and,O | |
genotyping,O | |
performance,O | |
were,O | |
evaluated,O | |
using,O | |
genotypes,O | |
determined,O | |
from,O | |
gDNA,O | |
and,O | |
wgaDNA,O | |
using,O | |
the,O | |
AmpFlSTR,O | |
Identifiler,O | |
assay,O | |
and,O | |
N,O | |
=,O | |
49,O | |
, | |
TaqMan,O | |
SNP,O | |
assays,O | |
.,O | |
, | |
Short,O | |
tandem,O | |
repeat,O | |
(,O | |
STR,O | |
),O | |
and,O | |
SNP,O | |
genotyping,O | |
completion,O | |
and,O | |
concordance,O | |
rates,O | |
were,O | |
significantly,O | |
reduced,O | |
with,O | |
wgaDNA,O | |
from,O | |
all,O | |
WGA,O | |
methods,O | |
compared,O | |
with,O | |
gDNA,O | |
.,O | |
, | |
OmniPlex,O | |
wgaDNA,O | |
exhibited,O | |
a,O | |
greater,O | |
reduction,O | |
in,O | |
genotyping,O | |
performance,O | |
than,O | |
MDA,O | |
wgaDNA,O | |
.,O | |
, | |
Reduced,O | |
wgaDNA,O | |
genotyping,O | |
performance,O | |
was,O | |
due,O | |
to,O | |
allelic,O | |
(,O | |
all,O | |
protocols,O | |
),O | |
and,O | |
locus,O | |
(,O | |
OmniPlex,O | |
),O | |
amplification,O | |
bias,O | |
leading,O | |
to,O | |
heterozygote,O | |
and,O | |
locus,O | |
dropout,O | |
,,O | |
respectively,O | |
,,O | |
and,O | |
%,O | |
GC,O | |
sequence,O | |
content,O | |
(,O | |
%,O | |
GC,O | |
),O | |
was,O | |
significantly,O | |
correlated,O | |
with,O | |
TaqMan,O | |
assay,O | |
performance,O | |
.,O | |
, | |
Lymphoblast,O | |
wgaDNA,O | |
exhibited,O | |
higher,O | |
yield,O | |
(,O | |
OmniPlex,O | |
),O | |
,,O | |
buffy,O | |
coat,O | |
wgaDNA,O | |
exhibited,O | |
higher,O | |
STR,O | |
genotyping,O | |
completion,O | |
(,O | |
MDA,O | |
),O | |
,,O | |
whereas,O | |
mouthwash,O | |
wgaDNA,O | |
exhibited,O | |
higher,O | |
SNP,O | |
genotyping,O | |
discordance,O | |
(,O | |
MDA,O | |
),O | |
.,O | |
, | |
Genotyping,O | |
of,O | |
wgaDNA,O | |
generated,O | |
from,O | |
<,O | |
or,O | |
=,O | |
5,O | |
ng,O | |
gDNA,O | |
,,O | |
e.g.,O | |
,,O | |
from,O | |
archaeological,O | |
,,O | |
forensic,O | |
,,O | |
prenatal,O | |
diagnostic,O | |
,,O | |
or,O | |
pathology,O | |
samples,O | |
,,O | |
may,O | |
require,O | |
additional,O | |
genotyping,O | |
validation,O | |
with,O | |
gDNA,O | |
and/or,O | |
more,O | |
sophisticated,O | |
analysis,O | |
of,O | |
genotypes,O | |
incorporating,O | |
observed,O | |
reductions,O | |
in,O | |
genotyping,O | |
performance,O | |
.,O | |
, | |
#12080485 | |
Mutations,O | |
in,O | |
two,O | |
genes,O | |
encoding,O | |
different,O | |
subunits,O | |
of,O | |
a,O | |
receptor,O | |
signaling,O | |
complex,O | |
result,O | |
in,O | |
an,O | |
identical,O | |
disease,O | |
phenotype,O | |
.,O | |
, | |
Polycystic,O | |
lipomembranous,O | |
osteodysplasia,O | |
with,O | |
sclerosing,O | |
leukoencephalopathy,O | |
(,O | |
PLOSL,O | |
),O | |
,,O | |
also,O | |
known,O | |
as,O | |
",O | |
Nasu,O | |
-,O | |
Hakola,O | |
disease,O | |
,,O | |
",O | |
is,O | |
a,O | |
globally,O | |
distributed,O | |
recessively,O | |
inherited,O | |
disease,O | |
leading,O | |
to,O | |
death,O | |
during,O | |
the,O | |
5th,O | |
decade,O | |
of,O | |
life,O | |
and,O | |
is,O | |
characterized,O | |
by,O | |
early,O | |
-,O | |
onset,O | |
progressive,O | |
dementia,O | |
and,O | |
bone,O | |
cysts,O | |
.,O | |
, | |
Elsewhere,O | |
,,O | |
we,O | |
have,O | |
identified,O | |
PLOSL,O | |
mutations,O | |
in,O | |
TYROBP,B-Gene | |
(,B-Gene | |
DAP12,I-Gene | |
),I-Gene | |
,,O | |
which,O | |
codes,O | |
for,O | |
a,O | |
membrane,O | |
receptor,O | |
component,O | |
in,O | |
natural,O | |
-,O | |
killer,O | |
and,O | |
myeloid,O | |
cells,O | |
,,O | |
and,O | |
also,O | |
have,O | |
identified,O | |
genetic,O | |
heterogeneity,O | |
in,O | |
PLOSL,O | |
,,O | |
with,O | |
some,O | |
patients,O | |
carrying,O | |
no,O | |
mutations,O | |
in,O | |
TYROBP,B-Gene | |
.,I-Gene | |
, | |
Here,O | |
we,O | |
complete,O | |
the,O | |
molecular,O | |
pathology,O | |
of,O | |
PLOSL,O | |
by,O | |
identifying,O | |
TREM2,B-Gene | |
as,O | |
the,O | |
second,O | |
PLOSL,O | |
gene,O | |
.,O | |
, | |
TREM2,B-Gene | |
forms,O | |
a,O | |
receptor,O | |
signaling,O | |
complex,O | |
with,O | |
TYROBP,B-Gene | |
and,O | |
triggers,O | |
activation,O | |
of,O | |
the,O | |
immune,O | |
responses,O | |
in,O | |
macrophages,O | |
and,O | |
dendritic,O | |
cells,O | |
.,O | |
, | |
Patients,O | |
with,O | |
PLOSL,O | |
have,O | |
no,O | |
defects,O | |
in,O | |
cell,O | |
-,O | |
mediated,O | |
immunity,O | |
,,O | |
suggesting,O | |
a,O | |
remarkable,O | |
capacity,O | |
of,O | |
the,O | |
human,O | |
immune,O | |
system,O | |
to,O | |
compensate,O | |
for,O | |
the,O | |
inactive,O | |
TYROBP,B-Gene | |
-,I-Gene | |
mediated,O | |
activation,O | |
pathway,O | |
.,O | |
, | |
Our,O | |
data,O | |
imply,O | |
that,O | |
the,O | |
TYROBP,B-Gene | |
-,I-Gene | |
mediated,O | |
signaling,O | |
pathway,O | |
plays,O | |
a,O | |
significant,O | |
role,O | |
in,O | |
human,O | |
brain,O | |
and,O | |
bone,O | |
tissue,O | |
and,O | |
provide,O | |
an,O | |
interesting,O | |
example,O | |
of,O | |
how,O | |
mutations,O | |
in,O | |
two,O | |
different,O | |
subunits,O | |
of,O | |
a,O | |
multisubunit,O | |
receptor,O | |
complex,O | |
result,O | |
in,O | |
an,O | |
identical,O | |
human,O | |
disease,O | |
phenotype,O | |
.,O | |
, | |
#7581409 | |
Two,O | |
new,O | |
mutations,O | |
,,O | |
Q473X,B-SNP | |
and,O | |
N487S,B-SNP | |
,,I-SNP | |
in,O | |
a,O | |
Caucasian,O | |
patient,O | |
with,O | |
mucopolysaccharidosis,O | |
IVA,O | |
(,O | |
Morquio,O | |
disease,O | |
),O | |
.,O | |
, | |
#18454449 | |
A,O | |
meta,O | |
-,O | |
analysis,O | |
of,O | |
nonsense,O | |
mutations,O | |
causing,O | |
human,O | |
genetic,O | |
disease,O | |
.,O | |
, | |
Nonsense,O | |
mutations,O | |
account,O | |
for,O | |
approximately,O | |
11,O | |
%,O | |
of,O | |
all,O | |
described,O | |
gene,O | |
lesions,O | |
causing,O | |
human,O | |
inherited,O | |
disease,O | |
and,O | |
approximately,O | |
20,O | |
%,O | |
of,O | |
disease,O | |
-,O | |
associated,O | |
single,O | |
-,O | |
basepair,O | |
substitutions,O | |
affecting,O | |
gene,O | |
coding,O | |
regions,O | |
.,O | |
, | |
Pathological,O | |
nonsense,O | |
mutations,O | |
resulting,O | |
in,O | |
TGA,O | |
(,O | |
38.5,O | |
%,O | |
),O | |
,,O | |
TAG,O | |
(,O | |
40.4,O | |
%,O | |
),O | |
,,O | |
and,O | |
TAA,O | |
(,O | |
21.1,O | |
%,O | |
),O | |
occur,O | |
in,O | |
different,O | |
proportions,O | |
to,O | |
naturally,O | |
occurring,O | |
stop,O | |
codons,O | |
.,O | |
, | |
Of,O | |
the,O | |
23,O | |
different,O | |
nucleotide,O | |
substitutions,O | |
giving,O | |
rise,O | |
to,O | |
nonsense,O | |
mutations,O | |
,,O | |
the,O | |
most,O | |
frequent,O | |
are,O | |
CGA,O | |
--,O | |
>,O | |
TGA,O | |
(,O | |
21,O | |
%,O | |
;,O | |
resulting,O | |
from,O | |
methylation,O | |
-,O | |
mediated,O | |
deamination,O | |
),O | |
and,O | |
CAG,O | |
--,O | |
>,O | |
TAG,O | |
(,O | |
19,O | |
%,O | |
),O | |
.,O | |
, | |
The,O | |
differing,O | |
nonsense,O | |
mutation,O | |
frequencies,O | |
are,O | |
largely,O | |
explicable,O | |
in,O | |
terms,O | |
of,O | |
variable,O | |
nucleotide,O | |
substitution,O | |
rates,O | |
such,O | |
that,O | |
it,O | |
is,O | |
unnecessary,O | |
to,O | |
invoke,O | |
differential,O | |
translational,O | |
termination,O | |
efficiency,O | |
or,O | |
differential,O | |
codon,O | |
usage,O | |
.,O | |
, | |
Some,O | |
genes,O | |
are,O | |
characterized,O | |
by,O | |
numerous,O | |
nonsense,O | |
mutations,O | |
but,O | |
relatively,O | |
few,O | |
if,O | |
any,O | |
missense,O | |
mutations,O | |
(,O | |
e.g.,O | |
,,O | |
CHM,B-Gene | |
),I-Gene | |
whereas,O | |
other,O | |
genes,O | |
exhibit,O | |
many,O | |
missense,O | |
mutations,O | |
but,O | |
few,O | |
if,O | |
any,O | |
nonsense,O | |
mutations,O | |
(,O | |
e.g.,O | |
,,O | |
PSEN1,B-Gene | |
),I-Gene | |
.,O | |
, | |
Genes,O | |
in,O | |
the,O | |
latter,O | |
category,O | |
have,O | |
a,O | |
tendency,O | |
to,O | |
encode,O | |
proteins,O | |
characterized,O | |
by,O | |
multimer,O | |
formation,O | |
.,O | |
, | |
Consistent,O | |
with,O | |
the,O | |
operation,O | |
of,O | |
a,O | |
clinical,O | |
selection,O | |
bias,O | |
,,O | |
genes,O | |
exhibiting,O | |
an,O | |
excess,O | |
of,O | |
nonsense,O | |
mutations,O | |
are,O | |
also,O | |
likely,O | |
to,O | |
display,O | |
an,O | |
excess,O | |
of,O | |
frameshift,O | |
mutations,O | |
.,O | |
, | |
Tumor,O | |
suppressor,O | |
(,O | |
TS,O | |
),O | |
genes,O | |
exhibit,O | |
a,O | |
disproportionate,O | |
number,O | |
of,O | |
nonsense,O | |
mutations,O | |
while,O | |
most,O | |
mutations,O | |
in,O | |
oncogenes,O | |
are,O | |
missense,O | |
.,O | |
, | |
A,O | |
total,O | |
of,O | |
12,O | |
%,O | |
of,O | |
somatic,O | |
nonsense,O | |
mutations,O | |
in,O | |
TS,O | |
genes,O | |
were,O | |
found,O | |
to,O | |
occur,O | |
recurrently,O | |
in,O | |
the,O | |
hypermutable,O | |
CpG,O | |
dinucleotide,O | |
.,O | |
, | |
In,O | |
a,O | |
comparison,O | |
of,O | |
somatic,O | |
and,O | |
germline,O | |
mutational,O | |
spectra,O | |
for,O | |
17,O | |
TS,O | |
genes,O | |
,,O | |
approximately,O | |
43,O | |
%,O | |
of,O | |
somatic,O | |
nonsense,O | |
mutations,O | |
had,O | |
counterparts,O | |
in,O | |
the,O | |
germline,O | |
(,O | |
rising,O | |
to,O | |
98,O | |
%,O | |
for,O | |
CpG,O | |
mutations,O | |
),O | |
.,O | |
, | |
Finally,O | |
,,O | |
the,O | |
proportion,O | |
of,O | |
disease,O | |
-,O | |
causing,O | |
nonsense,O | |
mutations,O | |
predicted,O | |
to,O | |
elicit,O | |
nonsense,O | |
-,O | |
mediated,O | |
mRNA,O | |
decay,O | |
(,O | |
NMD,O | |
),O | |
is,O | |
significantly,O | |
higher,O | |
(,O | |
P=1.56,O | |
x,O | |
10(-9,O | |
),O | |
),O | |
than,O | |
among,O | |
nonobserved,O | |
(,O | |
potential,O | |
),O | |
nonsense,O | |
mutations,O | |
,,O | |
implying,O | |
that,O | |
nonsense,O | |
mutations,O | |
that,O | |
elicit,O | |
NMD,O | |
are,O | |
more,O | |
likely,O | |
to,O | |
come,O | |
to,O | |
clinical,O | |
attention,O | |
.,O | |
, | |
#9311748 | |
Accurate,O | |
inference,O | |
of,O | |
relationships,O | |
in,O | |
sib,O | |
-,O | |
pair,O | |
linkage,O | |
studies,O | |
.,O | |
, | |
Relative,O | |
-,O | |
pair,O | |
designs,O | |
are,O | |
routinely,O | |
employed,O | |
in,O | |
linkage,O | |
studies,O | |
of,O | |
complex,O | |
genetic,O | |
diseases,O | |
and,O | |
quantitative,O | |
traits,O | |
.,O | |
, | |
Valid,O | |
application,O | |
of,O | |
these,O | |
methods,O | |
requires,O | |
correct,O | |
specification,O | |
of,O | |
the,O | |
relationships,O | |
of,O | |
the,O | |
pairs,O | |
.,O | |
, | |
For,O | |
example,O | |
,,O | |
within,O | |
a,O | |
sibship,O | |
,,O | |
presumed,O | |
full,O | |
sibs,O | |
actually,O | |
might,O | |
be,O | |
MZ,O | |
twins,O | |
,,O | |
half,O | |
sibs,O | |
,,O | |
or,O | |
unrelated,O | |
.,O | |
, | |
Misclassification,O | |
of,O | |
half,O | |
-,O | |
sib,O | |
pairs,O | |
or,O | |
unrelated,O | |
individuals,O | |
as,O | |
full,O | |
sibs,O | |
can,O | |
result,O | |
in,O | |
reduced,O | |
power,O | |
to,O | |
detect,O | |
linkage,O | |
.,O | |
, | |
When,O | |
other,O | |
family,O | |
members,O | |
,,O | |
such,O | |
as,O | |
parents,O | |
or,O | |
additional,O | |
siblings,O | |
,,O | |
are,O | |
available,O | |
,,O | |
incorrectly,O | |
specified,O | |
relationships,O | |
usually,O | |
will,O | |
be,O | |
detected,O | |
through,O | |
apparent,O | |
incompatibilities,O | |
with,O | |
Mendelian,O | |
inheritance,O | |
.,O | |
, | |
Without,O | |
other,O | |
family,O | |
members,O | |
,,O | |
sibling,O | |
relationships,O | |
can,O | |
not,O | |
be,O | |
determined,O | |
absolutely,O | |
,,O | |
but,O | |
they,O | |
still,O | |
can,O | |
be,O | |
inferred,O | |
probabilistically,O | |
if,O | |
sufficient,O | |
genetic,O | |
marker,O | |
data,O | |
are,O | |
available,O | |
.,O | |
, | |
In,O | |
this,O | |
paper,O | |
,,O | |
we,O | |
describe,O | |
a,O | |
simple,O | |
likelihood,O | |
ratio,O | |
method,O | |
to,O | |
infer,O | |
the,O | |
true,O | |
relationship,O | |
of,O | |
a,O | |
putative,O | |
sibling,O | |
pair,O | |
.,O | |
, | |
We,O | |
explore,O | |
the,O | |
number,O | |
of,O | |
markers,O | |
required,O | |
to,O | |
accurately,O | |
infer,O | |
relationships,O | |
typically,O | |
encountered,O | |
in,O | |
a,O | |
sib,O | |
-,O | |
pair,O | |
study,O | |
,,O | |
as,O | |
a,O | |
function,O | |
of,O | |
marker,O | |
allele,O | |
frequencies,O | |
,,O | |
marker,O | |
spacing,O | |
,,O | |
and,O | |
genotyping,O | |
error,O | |
rate,O | |
,,O | |
and,O | |
we,O | |
conclude,O | |
that,O | |
very,O | |
accurate,O | |
inference,O | |
of,O | |
relationships,O | |
can,O | |
be,O | |
achieved,O | |
,,O | |
given,O | |
the,O | |
marker,O | |
data,O | |
from,O | |
even,O | |
part,O | |
of,O | |
a,O | |
genome,O | |
scan,O | |
.,O | |
, | |
We,O | |
compare,O | |
our,O | |
method,O | |
to,O | |
related,O | |
methods,O | |
of,O | |
relationship,O | |
inference,O | |
that,O | |
have,O | |
been,O | |
suggested,O | |
.,O | |
, | |
Finally,O | |
,,O | |
we,O | |
demonstrate,O | |
the,O | |
value,O | |
of,O | |
excluding,O | |
non,O | |
-,O | |
full,O | |
sibs,O | |
in,O | |
a,O | |
genetic,O | |
linkage,O | |
study,O | |
of,O | |
non,O | |
-,O | |
insulin,O | |
-,O | |
dependent,O | |
diabetes,O | |
mellitus,O | |
.,O | |
, | |
#18252214 | |
Selection,O | |
against,O | |
pathogenic,O | |
mtDNA,O | |
mutations,O | |
in,O | |
a,O | |
stem,O | |
cell,O | |
population,O | |
leads,O | |
to,O | |
the,O | |
loss,O | |
of,O | |
the,O | |
3243A-->G,B-SNP | |
mutation,O | |
in,O | |
blood,O | |
.,O | |
, | |
The,O | |
mutation,O | |
3243A-->G,B-SNP | |
is,O | |
the,O | |
most,O | |
common,O | |
heteroplasmic,O | |
pathogenic,O | |
mitochondrial,O | |
DNA,O | |
(,O | |
mtDNA,O | |
),O | |
mutation,O | |
in,O | |
humans,O | |
,,O | |
but,O | |
it,O | |
is,O | |
not,O | |
understood,O | |
why,O | |
the,O | |
proportion,O | |
of,O | |
this,O | |
mutation,O | |
decreases,O | |
in,O | |
blood,O | |
during,O | |
life,O | |
.,O | |
, | |
Changing,O | |
levels,O | |
of,O | |
mtDNA,O | |
heteroplasmy,O | |
are,O | |
fundamentally,O | |
related,O | |
to,O | |
the,O | |
pathophysiology,O | |
of,O | |
the,O | |
mitochondrial,O | |
disease,O | |
and,O | |
correlate,O | |
with,O | |
clinical,O | |
progression,O | |
.,O | |
, | |
To,O | |
understand,O | |
this,O | |
process,O | |
,,O | |
we,O | |
simulated,O | |
the,O | |
segregation,O | |
of,O | |
mtDNA,O | |
in,O | |
hematopoietic,O | |
stem,O | |
cells,O | |
and,O | |
leukocyte,O | |
precursors,O | |
.,O | |
, | |
Our,O | |
observations,O | |
show,O | |
that,O | |
the,O | |
percentage,O | |
of,O | |
mutant,O | |
mtDNA,O | |
in,O | |
blood,O | |
decreases,O | |
exponentially,O | |
over,O | |
time,O | |
.,O | |
, | |
This,O | |
is,O | |
consistent,O | |
with,O | |
the,O | |
existence,O | |
of,O | |
a,O | |
selective,O | |
process,O | |
acting,O | |
at,O | |
the,O | |
stem,O | |
cell,O | |
level,O | |
and,O | |
explains,O | |
why,O | |
the,O | |
level,O | |
of,O | |
mutant,O | |
mtDNA,O | |
in,O | |
blood,O | |
is,O | |
almost,O | |
invariably,O | |
lower,O | |
than,O | |
in,O | |
nondividing,O | |
(,O | |
postmitotic,O | |
),O | |
tissues,O | |
such,O | |
as,O | |
skeletal,O | |
muscle,O | |
.,O | |
, | |
By,O | |
using,O | |
this,O | |
approach,O | |
,,O | |
we,O | |
derived,O | |
a,O | |
formula,O | |
from,O | |
human,O | |
data,O | |
to,O | |
correct,O | |
for,O | |
the,O | |
change,O | |
in,O | |
heteroplasmy,O | |
over,O | |
time,O | |
.,O | |
, | |
A,O | |
comparison,O | |
of,O | |
age,O | |
-,O | |
corrected,O | |
blood,O | |
heteroplasmy,O | |
levels,O | |
with,O | |
skeletal,O | |
muscle,O | |
,,O | |
an,O | |
embryologically,O | |
distinct,O | |
postmitotic,O | |
tissue,O | |
,,O | |
provides,O | |
independent,O | |
confirmation,O | |
of,O | |
the,O | |
model,O | |
.,O | |
, | |
These,O | |
findings,O | |
indicate,O | |
that,O | |
selection,O | |
against,O | |
pathogenic,O | |
mtDNA,O | |
mutations,O | |
occurs,O | |
in,O | |
a,O | |
stem,O | |
cell,O | |
population,O | |
.,O | |
, | |
#15114531 | |
Genetic,O | |
signatures,O | |
of,O | |
strong,O | |
recent,O | |
positive,O | |
selection,O | |
at,O | |
the,O | |
lactase,B-Gene | |
gene,O | |
.,O | |
, | |
In,O | |
most,O | |
human,O | |
populations,O | |
,,O | |
the,O | |
ability,O | |
to,O | |
digest,O | |
lactose,O | |
contained,O | |
in,O | |
milk,O | |
usually,O | |
disappears,O | |
in,O | |
childhood,O | |
,,O | |
but,O | |
in,O | |
European,O | |
-,O | |
derived,O | |
populations,O | |
,,O | |
lactase,B-Gene | |
activity,O | |
frequently,O | |
persists,O | |
into,O | |
adulthood,O | |
(,O | |
Scrimshaw,O | |
and,O | |
Murray,O | |
1988,O | |
),O | |
.,O | |
, | |
It,O | |
has,O | |
been,O | |
suggested,O | |
(,O | |
Cavalli,O | |
-,O | |
Sforza,O | |
1973,O | |
;,O | |
Hollox,O | |
et,O | |
al,O | |
.,O | |
2001,O | |
;,O | |
Enattah,O | |
et,O | |
al,O | |
.,O | |
2002,O | |
;,O | |
, | |
Poulter,O | |
et,O | |
al,O | |
.,O | |
2003,O | |
),O | |
that,O | |
a,O | |
selective,O | |
advantage,O | |
based,O | |
on,O | |
additional,O | |
nutrition,O | |
from,O | |
dairy,O | |
explains,O | |
these,O | |
genetically,O | |
determined,O | |
population,O | |
differences,O | |
(,O | |
Simoons,O | |
1970,O | |
;,O | |
Kretchmer,O | |
1971,O | |
;,O | |
Scrimshaw,O | |
and,O | |
Murray,O | |
1988,O | |
;,O | |
Enattah,O | |
et,O | |
al,O | |
.,O | |
2002,O | |
),O | |
,,O | |
but,O | |
formal,O | |
population,O | |
-,O | |
genetics,O | |
-,O | |
based,O | |
evidence,O | |
of,O | |
selection,O | |
has,O | |
not,O | |
yet,O | |
been,O | |
provided,O | |
.,O | |
, | |
To,O | |
assess,O | |
the,O | |
population,O | |
-,O | |
genetics,O | |
evidence,O | |
for,O | |
selection,O | |
,,O | |
we,O | |
typed,O | |
101,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphisms,O | |
covering,O | |
3.2,O | |
Mb,O | |
around,O | |
the,O | |
lactase,B-Gene | |
gene,O | |
.,O | |
, | |
In,O | |
northern,O | |
European,O | |
-,O | |
derived,O | |
populations,O | |
,,O | |
two,O | |
alleles,O | |
that,O | |
are,O | |
tightly,O | |
associated,O | |
with,O | |
lactase,O | |
persistence,O | |
(,O | |
Enattah,O | |
et,O | |
al,O | |
.,O | |
2002,O | |
),O | |
uniquely,O | |
mark,O | |
a,O | |
common,O | |
(,O | |
~77,O | |
%,O | |
),O | |
haplotype,O | |
that,O | |
extends,O | |
largely,O | |
undisrupted,O | |
for,O | |
>,O | |
1,O | |
Mb,O | |
.,O | |
, | |
We,O | |
provide,O | |
two,O | |
new,O | |
lines,O | |
of,O | |
genetic,O | |
evidence,O | |
that,O | |
this,O | |
long,O | |
,,O | |
common,O | |
haplotype,O | |
arose,O | |
rapidly,O | |
due,O | |
to,O | |
recent,O | |
selection,O | |
:,O | |
(,O | |
1,O | |
),O | |
by,O | |
use,O | |
of,O | |
the,O | |
traditional,O | |
F(ST,O | |
),O | |
measure,O | |
and,O | |
a,O | |
novel,O | |
test,O | |
based,O | |
on,O | |
p(excess,O | |
),O | |
,,O | |
we,O | |
demonstrate,O | |
large,O | |
frequency,O | |
differences,O | |
among,O | |
populations,O | |
for,O | |
the,O | |
persistence,O | |
-,O | |
associated,O | |
markers,O | |
and,O | |
for,O | |
flanking,O | |
markers,O | |
throughout,O | |
the,O | |
haplotype,O | |
,,O | |
and,O | |
(,O | |
2,O | |
),O | |
we,O | |
show,O | |
that,O | |
the,O | |
haplotype,O | |
is,O | |
unusually,O | |
long,O | |
,,O | |
given,O | |
its,O | |
high,O | |
frequency,O | |
--,O | |
a,O | |
hallmark,O | |
of,O | |
recent,O | |
selection,O | |
.,O | |
, | |
We,O | |
estimate,O | |
that,O | |
strong,O | |
selection,O | |
occurred,O | |
within,O | |
the,O | |
past,O | |
5,000,O | |
-,O | |
10,000,O | |
years,O | |
,,O | |
consistent,O | |
with,O | |
an,O | |
advantage,O | |
to,O | |
lactase,O | |
persistence,O | |
in,O | |
the,O | |
setting,O | |
of,O | |
dairy,O | |
farming,O | |
;,O | |
the,O | |
signals,O | |
of,O | |
selection,O | |
we,O | |
observe,O | |
are,O | |
among,O | |
the,O | |
strongest,O | |
yet,O | |
seen,O | |
for,O | |
any,O | |
gene,O | |
in,O | |
the,O | |
genome,O | |
.,O | |
, | |
#8199597 | |
Sequence,O | |
of,O | |
the,O | |
-530,O | |
region,O | |
of,O | |
the,O | |
beta,B-Gene | |
-,I-Gene | |
globin,I-Gene | |
gene,O | |
of,O | |
sickle,O | |
cell,O | |
anemia,O | |
patients,O | |
with,O | |
the,O | |
Arabian,O | |
haplotype,O | |
.,O | |
, | |
#17279550 | |
Comprehensive,O | |
evaluation,O | |
of,O | |
allele,O | |
frequency,O | |
differences,O | |
of,O | |
MC1R,B-Gene | |
variants,O | |
across,O | |
populations,O | |
.,O | |
, | |
The,O | |
melanocortin,B-Gene | |
1,I-Gene | |
receptor,I-Gene | |
(,B-Gene | |
MC1R,I-Gene | |
),I-Gene | |
,,O | |
a,O | |
member,O | |
of,O | |
the,O | |
G,O | |
protein,O | |
-,O | |
coupled,O | |
receptors,O | |
superfamily,O | |
,,O | |
mediates,O | |
the,O | |
response,O | |
to,O | |
melanocortins,O | |
and,O | |
is,O | |
currently,O | |
the,O | |
best,O | |
-,O | |
described,O | |
contributor,O | |
to,O | |
normal,O | |
pigment,O | |
variation,O | |
in,O | |
humans,O | |
.,O | |
, | |
A,O | |
remarkably,O | |
large,O | |
number,O | |
of,O | |
natural,O | |
polymorphisms,O | |
,,O | |
or,O | |
variants,O | |
,,O | |
of,O | |
the,O | |
MC1R,B-Gene | |
gene,O | |
have,O | |
been,O | |
identified,O | |
in,O | |
different,O | |
populations,O | |
.,O | |
, | |
Some,O | |
of,O | |
these,O | |
variants,O | |
have,O | |
been,O | |
associated,O | |
with,O | |
specific,O | |
hair,O | |
and,O | |
skin,O | |
color,O | |
phenotypes,O | |
,,O | |
the,O | |
presence,O | |
of,O | |
freckling,O | |
,,O | |
and,O | |
melanoma,O | |
and,O | |
nonmelanoma,O | |
skin,O | |
cancer,O | |
risk,O | |
.,O | |
, | |
Interestingly,O | |
,,O | |
some,O | |
MC1R,B-Gene | |
variants,O | |
have,O | |
been,O | |
associated,O | |
with,O | |
skin,O | |
cancer,O | |
beyond,O | |
their,O | |
effects,O | |
on,O | |
pigmentation,O | |
.,O | |
, | |
Although,O | |
the,O | |
red,O | |
hair,O | |
color,O | |
variants,O | |
(,O | |
RHC,O | |
variants,O | |
),O | |
have,O | |
been,O | |
associated,O | |
with,O | |
skin,O | |
cancer,O | |
risk,O | |
in,O | |
the,O | |
Celtic,O | |
population,O | |
,,O | |
studies,O | |
in,O | |
darkly,O | |
-,O | |
pigmented,O | |
Caucasian,O | |
populations,O | |
have,O | |
demonstrated,O | |
the,O | |
importance,O | |
of,O | |
non,O | |
-,O | |
RHC,O | |
MC1R,B-Gene | |
variants,O | |
on,O | |
skin,O | |
cancer,O | |
risk,O | |
as,O | |
well,O | |
.,O | |
, | |
We,O | |
have,O | |
reviewed,O | |
and,O | |
compared,O | |
allele,O | |
frequency,O | |
differences,O | |
of,O | |
MC1R,B-Gene | |
variants,O | |
across,O | |
geographic,O | |
regions,O | |
.,O | |
, | |
We,O | |
observed,O | |
large,O | |
differences,O | |
in,O | |
the,O | |
distribution,O | |
of,O | |
variants,O | |
across,O | |
populations,O | |
,,O | |
with,O | |
a,O | |
prominent,O | |
difference,O | |
between,O | |
lightly,O | |
and,O | |
darkly,O | |
-,O | |
pigmented,O | |
individuals,O | |
.,O | |
, | |
Moreover,O | |
,,O | |
among,O | |
Caucasian,O | |
groups,O | |
,,O | |
there,O | |
were,O | |
seven,O | |
variants,O | |
(,B-SNP | |
p.,I-SNP | |
V60L,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
V92,I-SNP | |
M,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
D84E,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
R151C,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
R160W,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
R163Q,I-SNP | |
,,I-SNP | |
and,O | |
p.,B-SNP | |
D294H,I-SNP | |
),I-SNP | |
with,O | |
significantly,O | |
different,O | |
allele,O | |
frequencies,O | |
.,O | |
, | |
Exploring,O | |
differences,O | |
in,O | |
allele,O | |
frequencies,O | |
of,O | |
MC1R,B-Gene | |
variants,O | |
across,O | |
populations,O | |
with,O | |
varying,O | |
pigmentation,O | |
and,O | |
differing,O | |
skin,O | |
cancer,O | |
risk,O | |
may,O | |
improve,O | |
our,O | |
understanding,O | |
of,O | |
the,O | |
complex,O | |
relationship,O | |
between,O | |
MC1R,B-Gene | |
,,I-Gene | |
pigmentation,O | |
,,O | |
and,O | |
carcinogenesis,O | |
.,O | |
, | |
#21549338 | |
A,O | |
missense,O | |
mutation,O | |
in,O | |
PRPF6,B-Gene | |
causes,O | |
impairment,O | |
of,O | |
pre,O | |
-,O | |
mRNA,O | |
splicing,O | |
and,O | |
autosomal,O | |
-,O | |
dominant,O | |
retinitis,O | |
pigmentosa,O | |
.,O | |
, | |
Retinitis,O | |
pigmentosa,O | |
(,O | |
RP,O | |
),O | |
is,O | |
an,O | |
inherited,O | |
form,O | |
of,O | |
retinal,O | |
degeneration,O | |
that,O | |
leads,O | |
to,O | |
progressive,O | |
visual,O | |
-,O | |
field,O | |
constriction,O | |
and,O | |
blindness,O | |
.,O | |
, | |
Although,O | |
the,O | |
disease,O | |
manifests,O | |
only,O | |
in,O | |
the,O | |
retina,O | |
,,O | |
mutations,O | |
in,O | |
ubiquitously,O | |
expressed,O | |
genes,O | |
associated,O | |
with,O | |
the,O | |
tri,O | |
-,O | |
snRNP,O | |
complex,O | |
of,O | |
the,O | |
spliceosome,O | |
have,O | |
been,O | |
identified,O | |
in,O | |
patients,O | |
with,O | |
dominantly,O | |
inherited,O | |
RP,O | |
.,O | |
, | |
We,O | |
screened,O | |
for,O | |
mutations,O | |
in,O | |
PRPF6,B-Gene | |
(,O | |
NM_012469.3,O | |
),O | |
,,O | |
a,O | |
gene,O | |
on,O | |
chromosome,O | |
20q13.33,O | |
encoding,O | |
an,O | |
essential,O | |
protein,O | |
for,O | |
tri,O | |
-,O | |
snRNP,O | |
assembly,O | |
and,O | |
stability,O | |
,,O | |
in,O | |
188,O | |
unrelated,O | |
patients,O | |
with,O | |
autosomal,O | |
-,O | |
dominant,O | |
RP,O | |
and,O | |
identified,O | |
a,O | |
missense,O | |
mutation,O | |
,,O | |
c.2185C,B-SNP | |
>,I-SNP | |
T,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
Arg729Trp,I-SNP | |
),I-SNP | |
.,O | |
, | |
This,O | |
change,O | |
affected,O | |
a,O | |
residue,O | |
that,O | |
is,O | |
conserved,O | |
from,O | |
humans,O | |
to,O | |
yeast,O | |
and,O | |
cosegregated,O | |
with,O | |
the,O | |
disease,O | |
in,O | |
the,O | |
family,O | |
in,O | |
which,O | |
it,O | |
was,O | |
identified,O | |
.,O | |
, | |
Lymphoblasts,O | |
derived,O | |
from,O | |
patients,O | |
with,O | |
this,O | |
mutation,O | |
showed,O | |
abnormal,O | |
localization,O | |
of,O | |
endogenous,O | |
PRPF6,B-Gene | |
within,O | |
the,O | |
nucleus,O | |
.,O | |
, | |
Specifically,O | |
,,O | |
this,O | |
protein,O | |
accumulated,O | |
in,O | |
the,O | |
Cajal,O | |
bodies,O | |
,,O | |
indicating,O | |
a,O | |
possible,O | |
impairment,O | |
in,O | |
the,O | |
tri,O | |
-,O | |
snRNP,O | |
assembly,O | |
or,O | |
recycling,O | |
.,O | |
, | |
Expression,O | |
of,O | |
GFP,O | |
-,O | |
tagged,O | |
PRPF6,B-Gene | |
in,O | |
HeLa,O | |
cells,O | |
showed,O | |
that,O | |
this,O | |
phenomenon,O | |
depended,O | |
exclusively,O | |
on,O | |
the,O | |
mutated,O | |
form,O | |
of,O | |
the,O | |
protein,O | |
.,O | |
, | |
Furthermore,O | |
,,O | |
analysis,O | |
of,O | |
endogenous,O | |
transcripts,O | |
in,O | |
cells,O | |
from,O | |
patients,O | |
revealed,O | |
intron,O | |
retention,O | |
for,O | |
pre,O | |
-,O | |
mRNA,O | |
bearing,O | |
specific,O | |
splicing,O | |
signals,O | |
,,O | |
according,O | |
to,O | |
the,O | |
same,O | |
pattern,O | |
displayed,O | |
by,O | |
lymphoblasts,O | |
with,O | |
mutations,O | |
in,O | |
other,O | |
PRPF,O | |
genes,O | |
.,O | |
, | |
Our,O | |
results,O | |
identify,O | |
PRPF6,B-Gene | |
as,O | |
the,O | |
sixth,O | |
gene,O | |
involved,O | |
in,O | |
pre,O | |
-,O | |
mRNA,O | |
splicing,O | |
and,O | |
dominant,O | |
RP,O | |
,,O | |
corroborating,O | |
the,O | |
hypothesis,O | |
that,O | |
deficiencies,O | |
in,O | |
the,O | |
spliceosome,O | |
play,O | |
an,O | |
important,O | |
role,O | |
in,O | |
the,O | |
molecular,O | |
pathology,O | |
of,O | |
this,O | |
disease,O | |
.,O | |
, | |
#8533774 | |
Discordant,O | |
patterns,O | |
of,O | |
linkage,O | |
disequilibrium,O | |
of,O | |
the,O | |
peptide,O | |
-,O | |
transporter,O | |
loci,O | |
within,O | |
the,O | |
HLA,O | |
class,O | |
II,O | |
region,O | |
.,O | |
, | |
Disequilibrium,O | |
between,O | |
genetic,O | |
markers,O | |
is,O | |
expected,O | |
to,O | |
decline,O | |
monotonically,O | |
with,O | |
recombinational,O | |
map,O | |
distance,O | |
.,O | |
, | |
We,O | |
present,O | |
evidence,O | |
from,O | |
the,O | |
HLA,O | |
class,O | |
II,O | |
region,O | |
that,O | |
seems,O | |
to,O | |
violate,O | |
this,O | |
principle,O | |
.,O | |
, | |
Pairwise,O | |
disequilibrium,O | |
values,O | |
were,O | |
calculated,O | |
from,O | |
six,O | |
loci,O | |
ranging,O | |
in,O | |
physical,O | |
separation,O | |
from,O | |
15,O | |
kb,O | |
to,O | |
550,O | |
kb,O | |
.,O | |
, | |
The,O | |
histocompatibility,O | |
loci,O | |
DRB1,B-Gene | |
,,I-Gene | |
DQA1,B-Gene | |
,,I-Gene | |
and,O | |
DQB1,B-Gene | |
,,I-Gene | |
located,O | |
on,O | |
the,O | |
distal,O | |
end,O | |
of,O | |
the,O | |
class,O | |
II,O | |
region,O | |
,,O | |
behave,O | |
as,O | |
a,O | |
single,O | |
evolutionary,O | |
unit,O | |
within,O | |
which,O | |
extremely,O | |
high,O | |
linkage,O | |
disequilibrium,O | |
exists,O | |
.,O | |
, | |
Lower,O | |
but,O | |
still,O | |
significant,O | |
levels,O | |
of,O | |
disequilibrium,O | |
are,O | |
present,O | |
between,O | |
these,O | |
loci,O | |
and,O | |
DPB1,B-Gene | |
,,I-Gene | |
located,O | |
at,O | |
the,O | |
proximal,O | |
edge,O | |
of,O | |
the,O | |
HLA,O | |
complex,O | |
.,O | |
, | |
The,O | |
peptide,O | |
-,O | |
transporter,O | |
loci,O | |
TAP1,B-Gene | |
and,O | |
TAP2,B-Gene | |
,,I-Gene | |
located,O | |
in,O | |
the,O | |
intervening,O | |
region,O | |
,,O | |
reveal,O | |
no,O | |
disequilibrium,O | |
with,O | |
each,O | |
other,O | |
and,O | |
low,O | |
or,O | |
negligible,O | |
disequilibrium,O | |
with,O | |
the,O | |
flanking,O | |
loci,O | |
.,O | |
, | |
The,O | |
action,O | |
of,O | |
two,O | |
genetic,O | |
process,O | |
is,O | |
required,O | |
to,O | |
account,O | |
for,O | |
this,O | |
phenomenon,O | |
:,O | |
a,O | |
recombinational,O | |
hotspot,O | |
operating,O | |
between,O | |
TAP1,B-Gene | |
and,O | |
TAP2,B-Gene | |
,,I-Gene | |
to,O | |
eliminate,O | |
disequilibrium,O | |
between,O | |
these,O | |
loci,O | |
,,O | |
and,O | |
at,O | |
the,O | |
same,O | |
time,O | |
selection,O | |
operating,O | |
on,O | |
particular,O | |
combinations,O | |
of,O | |
alleles,O | |
across,O | |
the,O | |
DR,O | |
-,O | |
DP,O | |
region,O | |
,,O | |
to,O | |
create,O | |
disequilibrium,O | |
in,O | |
the,O | |
favored,O | |
haplotypes,O | |
.,O | |
, | |
The,O | |
forces,O | |
producing,O | |
the,O | |
patterns,O | |
of,O | |
disequilibrium,O | |
observed,O | |
here,O | |
have,O | |
implications,O | |
for,O | |
the,O | |
mapping,O | |
of,O | |
train,O | |
loci,O | |
and,O | |
disease,O | |
genes,O | |
:,O | |
markers,O | |
of,O | |
TAP1,B-Gene | |
,,I-Gene | |
for,O | |
example,O | |
,,O | |
would,O | |
give,O | |
a,O | |
false,O | |
impression,O | |
as,O | |
to,O | |
the,O | |
influence,O | |
of,O | |
DPB1,B-Gene | |
on,O | |
a,O | |
trait,O | |
known,O | |
to,O | |
be,O | |
associated,O | |
with,O | |
DQB1,B-Gene | |
.,I-Gene | |
, | |
#22405084 | |
2011,O | |
William,O | |
Allan,O | |
Award,O | |
:,O | |
development,O | |
and,O | |
evolution,O | |
.,O | |
, | |
#9326328 | |
Identification,O | |
of,O | |
a,O | |
locus,O | |
for,O | |
progressive,O | |
familial,O | |
intrahepatic,O | |
cholestasis,O | |
PFIC2,B-Gene | |
on,O | |
chromosome,O | |
2q24,O | |
.,O | |
, | |
Progressive,O | |
familial,O | |
intrahepatic,O | |
cholestasis,O | |
(,O | |
PFIC,O | |
;,O | |
OMIM,O | |
211600,O | |
),O | |
is,O | |
the,O | |
second,O | |
most,O | |
common,O | |
familial,O | |
cholestatic,O | |
syndrome,O | |
presenting,O | |
in,O | |
infancy,O | |
.,O | |
, | |
A,O | |
locus,O | |
has,O | |
previously,O | |
been,O | |
mapped,O | |
to,O | |
chromosome,O | |
18q21,O | |
-,O | |
22,O | |
in,O | |
the,O | |
original,O | |
Byler,O | |
pedigree,O | |
.,O | |
, | |
This,O | |
chromosomal,O | |
region,O | |
also,O | |
harbors,O | |
the,O | |
locus,O | |
for,O | |
benign,O | |
recurrent,O | |
intrahepatic,O | |
cholestasis,O | |
(,O | |
BRIC,O | |
),O | |
a,O | |
related,O | |
phenotype,O | |
.,O | |
, | |
Linkage,O | |
analysis,O | |
in,O | |
six,O | |
consanguineous,O | |
PFIC,B-Gene | |
pedigrees,O | |
from,O | |
the,O | |
Middle,O | |
East,O | |
has,O | |
previously,O | |
excluded,O | |
linkage,O | |
to,O | |
chromosome,O | |
18q21,O | |
-,O | |
22,O | |
,,O | |
indicating,O | |
the,O | |
existence,O | |
of,O | |
locus,O | |
heterogeneity,O | |
within,O | |
the,O | |
PFIC,B-Gene | |
phenotype,O | |
.,O | |
, | |
By,O | |
use,O | |
of,O | |
homozygosity,O | |
mapping,O | |
and,O | |
a,O | |
genome,O | |
scan,O | |
in,O | |
these,O | |
pedigrees,O | |
,,O | |
a,O | |
locus,O | |
designated,O | |
",B-Gene | |
PFIC2,I-Gene | |
",I-Gene | |
has,O | |
been,O | |
mapped,O | |
to,O | |
chromosome,O | |
2q24,O | |
.,O | |
, | |
A,O | |
maximum,O | |
LOD,O | |
score,O | |
of,O | |
8.5,O | |
was,O | |
obtained,O | |
in,O | |
the,O | |
interval,O | |
between,O | |
marker,O | |
loci,O | |
D2S306,O | |
and,O | |
D2S124,O | |
,,O | |
with,O | |
all,O | |
families,O | |
linked,O | |
.,O | |
, | |
#19896111 | |
Common,O | |
variants,O | |
in,O | |
the,O | |
trichohyalin,O | |
gene,O | |
are,O | |
associated,O | |
with,O | |
straight,O | |
hair,O | |
in,O | |
Europeans,O | |
.,O | |
, | |
Hair,O | |
morphology,O | |
is,O | |
highly,O | |
differentiated,O | |
between,O | |
populations,O | |
and,O | |
among,O | |
people,O | |
of,O | |
European,O | |
ancestry,O | |
.,O | |
, | |
Whereas,O | |
hair,O | |
morphology,O | |
in,O | |
East,O | |
Asian,O | |
populations,O | |
has,O | |
been,O | |
studied,O | |
extensively,O | |
,,O | |
relatively,O | |
little,O | |
is,O | |
known,O | |
about,O | |
the,O | |
genetics,O | |
of,O | |
this,O | |
trait,O | |
in,O | |
Europeans,O | |
.,O | |
, | |
We,O | |
performed,O | |
a,O | |
genome,O | |
-,O | |
wide,O | |
association,O | |
scan,O | |
for,O | |
hair,O | |
morphology,O | |
(,O | |
straight,O | |
,,O | |
wavy,O | |
,,O | |
curly,O | |
),O | |
in,O | |
three,O | |
Australian,O | |
samples,O | |
of,O | |
European,O | |
descent,O | |
.,O | |
, | |
All,O | |
three,O | |
samples,O | |
showed,O | |
evidence,O | |
of,O | |
association,O | |
implicating,O | |
the,O | |
Trichohyalin,B-Gene | |
gene,O | |
(,B-Gene | |
TCHH,I-Gene | |
),I-Gene | |
,,O | |
which,O | |
is,O | |
expressed,O | |
in,O | |
the,O | |
developing,O | |
inner,O | |
root,O | |
sheath,O | |
of,O | |
the,O | |
hair,O | |
follicle,O | |
,,O | |
and,O | |
explaining,O | |
approximately,O | |
6,O | |
%,O | |
of,O | |
variance,O | |
(,O | |
p=1.5x10(-31,O | |
),O | |
),O | |
.,O | |
, | |
These,O | |
variants,O | |
are,O | |
at,O | |
their,O | |
highest,O | |
frequency,O | |
in,O | |
Northern,O | |
Europeans,O | |
,,O | |
paralleling,O | |
the,O | |
distribution,O | |
of,O | |
the,O | |
straight,O | |
-,O | |
hair,O | |
EDAR,O | |
variant,O | |
in,O | |
Asian,O | |
populations,O | |
.,O | |
, | |
#20471002 | |
Pooled,O | |
association,O | |
tests,O | |
for,O | |
rare,O | |
variants,O | |
in,O | |
exon,O | |
-,O | |
resequencing,O | |
studies,O | |
.,O | |
, | |
Deep,O | |
sequencing,O | |
will,O | |
soon,O | |
generate,O | |
comprehensive,O | |
sequence,O | |
information,O | |
in,O | |
large,O | |
disease,O | |
samples,O | |
.,O | |
, | |
Although,O | |
the,O | |
power,O | |
to,O | |
detect,O | |
association,O | |
with,O | |
an,O | |
individual,O | |
rare,O | |
variant,O | |
is,O | |
limited,O | |
,,O | |
pooling,O | |
variants,O | |
by,O | |
gene,O | |
or,O | |
pathway,O | |
into,O | |
a,O | |
composite,O | |
test,O | |
provides,O | |
an,O | |
alternative,O | |
strategy,O | |
for,O | |
identifying,O | |
susceptibility,O | |
genes,O | |
.,O | |
, | |
We,O | |
describe,O | |
a,O | |
statistical,O | |
method,O | |
for,O | |
detecting,O | |
association,O | |
of,O | |
multiple,O | |
rare,O | |
variants,O | |
in,O | |
protein,O | |
-,O | |
coding,O | |
genes,O | |
with,O | |
a,O | |
quantitative,O | |
or,O | |
dichotomous,O | |
trait,O | |
.,O | |
, | |
The,O | |
approach,O | |
is,O | |
based,O | |
on,O | |
the,O | |
regression,O | |
of,O | |
phenotypic,O | |
values,O | |
on,O | |
individuals,O | |
',O | |
genotype,O | |
scores,O | |
subject,O | |
to,O | |
a,O | |
variable,O | |
allele,O | |
-,O | |
frequency,O | |
threshold,O | |
,,O | |
incorporating,O | |
computational,O | |
predictions,O | |
of,O | |
the,O | |
functional,O | |
effects,O | |
of,O | |
missense,O | |
variants,O | |
.,O | |
, | |
Statistical,O | |
significance,O | |
is,O | |
assessed,O | |
by,O | |
permutation,O | |
testing,O | |
with,O | |
variable,O | |
thresholds,O | |
.,O | |
, | |
We,O | |
used,O | |
a,O | |
rigorous,O | |
population,O | |
-,O | |
genetics,O | |
simulation,O | |
framework,O | |
to,O | |
evaluate,O | |
the,O | |
power,O | |
of,O | |
the,O | |
method,O | |
,,O | |
and,O | |
we,O | |
applied,O | |
the,O | |
method,O | |
to,O | |
empirical,O | |
sequencing,O | |
data,O | |
from,O | |
three,O | |
disease,O | |
studies,O | |
.,O | |
, | |
#10712193 | |
James,O | |
V.,O | |
Neel,O | |
,,O | |
M.D.,O | |
,,O | |
Ph.D.,O | |
(,O | |
March,O | |
22,O | |
,,O | |
1915,O | |
-,O | |
January,O | |
31,O | |
,,O | |
2000,O | |
):,O | |
founder,O | |
effect,O | |
.,O | |
, | |
#12442272 | |
D90A,B-SNP | |
-,B-Gene | |
SOD1,I-Gene | |
mediated,O | |
amyotrophic,O | |
lateral,O | |
sclerosis,O | |
:,O | |
a,O | |
single,O | |
founder,O | |
for,O | |
all,O | |
cases,O | |
with,O | |
evidence,O | |
for,O | |
a,O | |
Cis,O | |
-,O | |
acting,O | |
disease,O | |
modifier,O | |
in,O | |
the,O | |
recessive,O | |
haplotype,O | |
.,O | |
, | |
More,O | |
than,O | |
100,O | |
different,O | |
heterozygous,O | |
mutations,O | |
in,O | |
copper,O | |
/,O | |
zinc,O | |
superoxide,B-Gene | |
dismutase,I-Gene | |
(,B-Gene | |
SOD1,I-Gene | |
),I-Gene | |
have,O | |
been,O | |
found,O | |
in,O | |
patients,O | |
with,O | |
amyotrophic,O | |
lateral,O | |
sclerosis,O | |
(,O | |
ALS,O | |
),O | |
,,O | |
a,O | |
fatal,O | |
neurodegenerative,O | |
disease,O | |
.,O | |
, | |
Uniquely,O | |
,,O | |
D90A,B-SNP | |
-,B-Gene | |
SOD1,I-Gene | |
has,O | |
been,O | |
identified,O | |
in,O | |
recessive,O | |
,,O | |
dominant,O | |
and,O | |
apparently,O | |
sporadic,O | |
pedigrees,O | |
.,O | |
, | |
The,O | |
phenotype,O | |
of,O | |
homozygotes,O | |
is,O | |
stereotyped,O | |
with,O | |
an,O | |
extended,O | |
survival,O | |
,,O | |
whereas,O | |
that,O | |
of,O | |
affected,O | |
heterozygotes,O | |
varies,O | |
.,O | |
, | |
The,O | |
frequency,O | |
of,O | |
D90A,B-SNP | |
-,B-Gene | |
SOD1,I-Gene | |
is,O | |
50,O | |
times,O | |
higher,O | |
in,O | |
Scandinavia,O | |
(,O | |
2.5,O | |
%,O | |
),O | |
than,O | |
elsewhere,O | |
,,O | |
though,O | |
ALS,O | |
prevalence,O | |
is,O | |
not,O | |
raised,O | |
there,O | |
.,O | |
, | |
Our,O | |
earlier,O | |
study,O | |
indicated,O | |
separate,O | |
founders,O | |
for,O | |
recessive,O | |
and,O | |
dominant,O | |
/,O | |
sporadic,O | |
ALS,O | |
and,O | |
we,O | |
proposed,O | |
a,O | |
disease,O | |
-,O | |
modifying,O | |
factor,O | |
linked,O | |
to,O | |
the,O | |
recessive,O | |
mutation,O | |
.,O | |
, | |
Here,O | |
we,O | |
have,O | |
doubled,O | |
our,O | |
sample,O | |
set,O | |
and,O | |
employed,O | |
novel,O | |
markers,O | |
to,O | |
characterise,O | |
the,O | |
mutation,O | |
's,O | |
origin,O | |
and,O | |
localise,O | |
any,O | |
modifying,O | |
factor,O | |
.,O | |
, | |
Linkage,O | |
disequilibrium,O | |
analysis,O | |
indicates,O | |
that,O | |
D90A,B-SNP | |
homozygotes,O | |
and,O | |
heterozygotes,O | |
share,O | |
a,O | |
rare,O | |
haplotype,O | |
and,O | |
are,O | |
all,O | |
descended,O | |
from,O | |
a,O | |
single,O | |
ancient,O | |
founder,O | |
(,O | |
alpha,O | |
0.974,O | |
),O | |
, | |
c.895,O | |
generations,O | |
ago,O | |
.,O | |
, | |
Homozygotes,O | |
arose,O | |
subsequently,O | |
only,O | |
c.63,O | |
generations,O | |
ago,O | |
(,O | |
alpha,O | |
0.878,O | |
),O | |
.,O | |
, | |
Recombination,O | |
has,O | |
reduced,O | |
the,O | |
region,O | |
shared,O | |
by,O | |
recessive,O | |
kindreds,O | |
to,O | |
97,O | |
-,O | |
265,O | |
kb,O | |
around,O | |
SOD1,B-Gene | |
,,I-Gene | |
excluding,O | |
all,O | |
neighbouring,O | |
genes,O | |
.,O | |
, | |
We,O | |
propose,O | |
that,O | |
a,O | |
cis,O | |
-,O | |
acting,O | |
regulatory,O | |
polymorphism,O | |
has,O | |
arisen,O | |
close,O | |
to,O | |
D90A,B-SNP | |
-,B-Gene | |
SOD1,I-Gene | |
in,O | |
the,O | |
recessive,O | |
founder,O | |
,,O | |
which,O | |
decreases,O | |
ALS,O | |
susceptibility,O | |
in,O | |
heterozygotes,O | |
and,O | |
slows,O | |
disease,O | |
progression,O | |
.,O | |
, | |
#12872253 | |
Mutation,O | |
screening,O | |
of,O | |
the,O | |
N,B-Gene | |
-,I-Gene | |
myc,I-Gene | |
downstream,I-Gene | |
-,I-Gene | |
regulated,I-Gene | |
gene,I-Gene | |
1,I-Gene | |
(,B-Gene | |
NDRG1,I-Gene | |
),I-Gene | |
in,O | |
patients,O | |
with,O | |
Charcot,O | |
-,O | |
Marie,O | |
-,O | |
Tooth,O | |
Disease,O | |
.,O | |
, | |
In,O | |
a,O | |
previous,O | |
study,O | |
,,O | |
we,O | |
have,O | |
shown,O | |
that,O | |
N,B-Gene | |
-,I-Gene | |
myc,I-Gene | |
downstream,I-Gene | |
-,I-Gene | |
regulated,I-Gene | |
gene,I-Gene | |
1,I-Gene | |
(,B-Gene | |
NDRG1,I-Gene | |
),I-Gene | |
,,O | |
classified,O | |
in,O | |
databases,O | |
as,O | |
a,O | |
tumor,O | |
suppressor,O | |
and,O | |
heavy,O | |
metal,O | |
-,O | |
response,O | |
protein,O | |
,,O | |
is,O | |
mutated,O | |
in,O | |
hereditary,O | |
motor,O | |
and,O | |
sensory,O | |
neuropathy,O | |
Lom,O | |
(,O | |
HMSNL,O | |
),O | |
,,O | |
a,O | |
severe,O | |
autosomal,O | |
recessive,O | |
form,O | |
of,O | |
Charcot,O | |
-,O | |
Marie,O | |
-,O | |
Tooth,O | |
(,O | |
CMT,O | |
),O | |
disease,O | |
.,O | |
, | |
The,O | |
private,O | |
founder,O | |
mutation,O | |
R148X,B-SNP | |
,,I-SNP | |
causing,O | |
HMSNL,O | |
in,O | |
patients,O | |
of,O | |
Romani,O | |
ethnicity,O | |
,,O | |
has,O | |
so,O | |
far,O | |
remained,O | |
the,O | |
only,O | |
molecular,O | |
defect,O | |
linking,O | |
NDRG1,B-Gene | |
to,O | |
a,O | |
specific,O | |
disease,O | |
phenotype,O | |
.,O | |
, | |
Here,O | |
we,O | |
report,O | |
the,O | |
first,O | |
study,O | |
aiming,O | |
to,O | |
assess,O | |
the,O | |
overall,O | |
contribution,O | |
of,O | |
this,O | |
gene,O | |
to,O | |
the,O | |
pathogenesis,O | |
of,O | |
peripheral,O | |
neuropathies,O | |
,,O | |
in,O | |
cases,O | |
where,O | |
the,O | |
most,O | |
common,O | |
causes,O | |
of,O | |
CMT,O | |
disease,O | |
have,O | |
been,O | |
excluded,O | |
.,O | |
, | |
Sequence,O | |
analysis,O | |
of,O | |
NDRG1,B-Gene | |
in,O | |
104,O | |
CMT,O | |
patients,O | |
of,O | |
diverse,O | |
ethnicity,O | |
identified,O | |
one,O | |
novel,O | |
disease,O | |
-,O | |
causing,O | |
mutation,O | |
,,O | |
IVS8,B-SNP | |
-,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
A,I-SNP | |
(,B-SNP | |
g.2290787G,I-SNP | |
>,I-SNP | |
A,I-SNP | |
),I-SNP | |
,,O | |
which,O | |
affects,O | |
the,O | |
splice,O | |
-,O | |
acceptor,O | |
site,O | |
of,O | |
IVS8,O | |
and,O | |
results,O | |
in,O | |
the,O | |
skipping,O | |
of,O | |
exon,O | |
9,O | |
.,O | |
, | |
The,O | |
phenotype,O | |
of,O | |
the,O | |
IVS8,B-SNP | |
-,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
A,I-SNP | |
homozygote,O | |
was,O | |
very,O | |
closely,O | |
related,O | |
to,O | |
that,O | |
of,O | |
HMSNL,O | |
patients,O | |
.,O | |
, | |
In,O | |
addition,O | |
,,O | |
we,O | |
have,O | |
detected,O | |
homozygosity,O | |
for,O | |
the,O | |
known,O | |
R148X,B-SNP | |
mutation,O | |
in,O | |
two,O | |
affected,O | |
individuals,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
NDRG1,B-Gene | |
thus,O | |
accounted,O | |
for,O | |
2.88,O | |
%,O | |
of,O | |
our,O | |
overall,O | |
group,O | |
of,O | |
patients,O | |
,,O | |
and,O | |
for,O | |
4.68,O | |
%,O | |
of,O | |
cases,O | |
with,O | |
demyelinating,O | |
neuropathies,O | |
.,O | |
, | |
No,O | |
other,O | |
variants,O | |
were,O | |
identified,O | |
in,O | |
the,O | |
coding,O | |
sequence,O | |
,,O | |
whereas,O | |
12,O | |
single,O | |
nucleotide,O | |
polymorphisms,O | |
were,O | |
observed,O | |
in,O | |
the,O | |
introns,O | |
.,O | |
, | |
Hum,O | |
Mutat,O | |
22:129,O | |
-,O | |
135,O | |
,,O | |
2003,O | |
.,O | |
, | |
#22331697 | |
Microarray,O | |
-,O | |
based,O | |
copy,O | |
number,O | |
analysis,O | |
of,O | |
neurofibromatosis,O | |
type-1,O | |
(,O | |
NF1)-associated,O | |
malignant,O | |
peripheral,O | |
nerve,O | |
sheath,O | |
tumors,O | |
reveals,O | |
a,O | |
role,O | |
for,O | |
Rho,O | |
-,O | |
GTPase,O | |
pathway,O | |
genes,O | |
in,O | |
NF1,O | |
tumorigenesis,O | |
.,O | |
, | |
Neurofibromatosis,O | |
type-1,O | |
(,O | |
NF1,O | |
),O | |
is,O | |
associated,O | |
with,O | |
the,O | |
growth,O | |
of,O | |
benign,O | |
and,O | |
malignant,O | |
tumors,O | |
.,O | |
, | |
Approximately,O | |
15,O | |
%,O | |
of,O | |
NF1,O | |
patients,O | |
develop,O | |
malignant,O | |
peripheral,O | |
nerve,O | |
sheath,O | |
tumors,O | |
(,O | |
MPNSTs,O | |
),O | |
,,O | |
underlining,O | |
the,O | |
need,O | |
to,O | |
identify,O | |
specific,O | |
diagnostic,O | |
/,O | |
prognostic,O | |
biomarkers,O | |
associated,O | |
with,O | |
MPNST,O | |
development,O | |
.,O | |
, | |
The,O | |
Affymetrix,O | |
Genome,O | |
-,O | |
Wide,O | |
Human,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphism,O | |
(,O | |
SNP,O | |
),O | |
Array,O | |
6.0,O | |
was,O | |
used,O | |
to,O | |
perform,O | |
SNP,O | |
genotyping,O | |
and,O | |
copy,O | |
number,O | |
alteration,O | |
(,O | |
CNA,O | |
),O | |
,,O | |
loss,O | |
-,O | |
of,O | |
-,O | |
heterozygosity,O | |
(,O | |
LOH,O | |
),O | |
,,O | |
and,O | |
copy,O | |
number,O | |
neutral,O | |
-,O | |
LOH,O | |
(,O | |
CNN,O | |
-,O | |
LOH,O | |
),O | |
analyses,O | |
of,O | |
DNA,O | |
isolated,O | |
from,O | |
15,O | |
MPNSTs,O | |
,,O | |
five,O | |
benign,O | |
plexiform,O | |
neurofibromas,O | |
(,O | |
PNFs,O | |
),O | |
,,O | |
and,O | |
patient,O | |
-,O | |
matched,O | |
lymphocyte,O | |
DNAs,O | |
.,O | |
, | |
MPNSTs,O | |
exhibited,O | |
high,O | |
-,O | |
level,O | |
CNN,O | |
-,O | |
LOH,O | |
,,O | |
with,O | |
recurrent,O | |
changes,O | |
occurring,O | |
in,O | |
MPNSTs,O | |
but,O | |
not,O | |
PNFs,O | |
.,O | |
, | |
CNN,O | |
-,O | |
LOH,O | |
was,O | |
evident,O | |
in,O | |
MPNSTs,O | |
but,O | |
occurred,O | |
less,O | |
frequently,O | |
than,O | |
genomic,O | |
deletions,O | |
.,O | |
, | |
CNAs,O | |
involving,O | |
the,O | |
ITGB8,O | |
,,O | |
PDGFA,O | |
,,O | |
Ras,O | |
-,O | |
related,O | |
C3,O | |
botulinum,O | |
toxin,O | |
substrate,O | |
1,O | |
(,B-Gene | |
RAC1,I-Gene | |
),I-Gene | |
(,O | |
7p21,O | |
-,O | |
p22,O | |
),O | |
,,O | |
PDGFRL,B-Gene | |
(,O | |
8p22,O | |
-,O | |
p21.3,O | |
),O | |
,,O | |
and,O | |
matrix,B-Gene | |
metallopeptidase,I-Gene | |
12,I-Gene | |
(,B-Gene | |
MMP12,I-Gene | |
),I-Gene | |
(,O | |
11q22.3,O | |
),O | |
genes,O | |
were,O | |
specific,O | |
to,O | |
MPNSTs,O | |
.,O | |
, | |
Pathway,O | |
analysis,O | |
revealed,O | |
the,O | |
MPNST,O | |
-,O | |
specific,O | |
amplification,O | |
of,O | |
seven,O | |
Rho,O | |
-,O | |
GTPase,O | |
pathway,O | |
genes,O | |
and,O | |
several,O | |
cytoskeletal,O | |
remodeling,O | |
/,O | |
cell,O | |
adhesion,O | |
genes,O | |
.,O | |
, | |
In,O | |
knockdown,O | |
experiments,O | |
employing,O | |
short,O | |
-,O | |
hairpin,O | |
RAC1,B-Gene | |
,,I-Gene | |
ROCK2,B-Gene | |
,,I-Gene | |
PTK2,B-Gene | |
,,I-Gene | |
and,O | |
LIMK1,B-Gene | |
RNAs,O | |
to,O | |
transfect,O | |
both,O | |
control,O | |
and,O | |
MPNST,O | |
-,O | |
derived,O | |
cell,O | |
lines,O | |
,,O | |
cell,O | |
adhesion,O | |
was,O | |
significantly,O | |
increased,O | |
in,O | |
the,O | |
MPNST,O | |
cell,O | |
lines,O | |
,,O | |
whereas,O | |
wound,O | |
healing,O | |
,,O | |
cell,O | |
migration,O | |
,,O | |
and,O | |
invasiveness,O | |
were,O | |
reduced,O | |
,,O | |
consistent,O | |
with,O | |
a,O | |
role,O | |
for,O | |
these,O | |
Rho,O | |
-,O | |
GTPase,O | |
pathway,O | |
genes,O | |
in,O | |
MPNST,O | |
development,O | |
and,O | |
metastasis,O | |
.,O | |
, | |
These,O | |
results,O | |
suggest,O | |
new,O | |
targets,O | |
for,O | |
therapeutic,O | |
intervention,O | |
in,O | |
relation,O | |
to,O | |
MPNSTs,O | |
.,O | |
, | |
#15937921 | |
Niemann,O | |
-,O | |
Pick,O | |
type,O | |
C,O | |
disease,O | |
:,O | |
subcellular,O | |
location,O | |
and,O | |
functional,O | |
characterization,O | |
of,O | |
NPC2,B-Gene | |
proteins,O | |
with,O | |
naturally,O | |
occurring,O | |
missense,O | |
mutations,O | |
.,O | |
, | |
Niemann,O | |
-,O | |
Pick,O | |
disease,O | |
type,O | |
C,O | |
(,O | |
NPC,O | |
),O | |
,,O | |
a,O | |
severe,O | |
neurovisceral,O | |
lysosomal,O | |
disorder,O | |
,,O | |
is,O | |
due,O | |
to,O | |
mutations,O | |
on,O | |
the,O | |
NPC1,B-Gene | |
gene,O | |
or,O | |
,,O | |
in,O | |
a,O | |
minority,O | |
of,O | |
families,O | |
,,O | |
the,O | |
NPC2,B-Gene | |
gene,O | |
.,O | |
, | |
Few,O | |
investigations,O | |
have,O | |
been,O | |
devoted,O | |
to,O | |
the,O | |
NPC2,B-Gene | |
protein,O | |
,,O | |
for,O | |
which,O | |
only,O | |
13,O | |
different,O | |
disease,O | |
-,O | |
causing,O | |
mutations,O | |
(,O | |
including,O | |
three,O | |
novel,O | |
ones,O | |
in,O | |
this,O | |
report,O | |
),O | |
have,O | |
been,O | |
described,O | |
.,O | |
, | |
Among,O | |
the,O | |
currently,O | |
known,O | |
NPC2,B-Gene | |
mutant,O | |
alleles,O | |
,,O | |
six,O | |
resulted,O | |
in,O | |
a,O | |
premature,O | |
stop,O | |
codon,O | |
.,O | |
, | |
Only,O | |
five,O | |
missense,O | |
mutations,O | |
,,O | |
c.115G,B-SNP | |
>,I-SNP | |
A,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
V39,I-SNP | |
M,I-SNP | |
),I-SNP | |
,,O | |
c.140G,B-SNP | |
>,I-SNP | |
T,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
C47F,I-SNP | |
),I-SNP | |
,,O | |
c.199T,B-SNP | |
>,I-SNP | |
C,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
S67P,I-SNP | |
),I-SNP | |
,,O | |
c.278G,B-SNP | |
>,I-SNP | |
T,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
C93F,I-SNP | |
),I-SNP | |
,,O | |
and,O | |
(,O | |
this,O | |
report,O | |
),O | |
c.295T,B-SNP | |
>,I-SNP | |
C,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
C99R,I-SNP | |
),I-SNP | |
were,O | |
identified,O | |
.,O | |
, | |
In,O | |
the,O | |
present,O | |
study,O | |
,,O | |
we,O | |
generated,O | |
cDNA,O | |
constructs,O | |
harboring,O | |
each,O | |
of,O | |
these,O | |
missense,O | |
mutations,O | |
and,O | |
,,O | |
upon,O | |
overexpression,O | |
in,O | |
human,O | |
fibroblasts,O | |
with,O | |
a,O | |
nonsense,O | |
NPC2,B-Gene | |
mutation,O | |
,,O | |
characterized,O | |
the,O | |
mutated,O | |
proteins,O | |
by,O | |
immunoblotting,O | |
,,O | |
immunocytofluorescence,O | |
microscopy,O | |
,,O | |
and,O | |
complementation,O | |
.,O | |
, | |
Mutation,O | |
p.,B-SNP | |
V39,I-SNP | |
M,I-SNP | |
,,I-SNP | |
described,O | |
in,O | |
the,O | |
homozygous,O | |
state,O | |
in,O | |
two,O | |
patients,O | |
with,O | |
an,O | |
adult,O | |
-,O | |
onset,O | |
neurological,O | |
disease,O | |
,,O | |
resulted,O | |
in,O | |
the,O | |
synthesis,O | |
of,O | |
apparently,O | |
functional,O | |
recombinant,O | |
proteins,O | |
correctly,O | |
targeted,O | |
to,O | |
lysosomes,O | |
.,O | |
, | |
Although,O | |
a,O | |
mild,O | |
functional,O | |
impact,O | |
could,O | |
possibly,O | |
be,O | |
overlooked,O | |
in,O | |
our,O | |
overexpression,O | |
system,O | |
,,O | |
comparative,O | |
studies,O | |
with,O | |
NPC1,O | |
mutants,O | |
indicated,O | |
that,O | |
mild,O | |
mutations,O | |
might,O | |
not,O | |
necessarily,O | |
affect,O | |
localization,O | |
of,O | |
the,O | |
protein,O | |
or,O | |
its,O | |
quantity,O | |
in,O | |
the,O | |
native,O | |
state,O | |
.,O | |
, | |
Conversely,O | |
,,O | |
mutations,O | |
p.,B-SNP | |
C47F,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
C93R,I-SNP | |
,,I-SNP | |
p.,B-SNP | |
C99R,I-SNP | |
, | |
but,O | |
also,O | |
,,O | |
less,O | |
predictably,O | |
,,O | |
p.,B-SNP | |
S67P,I-SNP | |
,,I-SNP | |
led,O | |
to,O | |
the,O | |
synthesis,O | |
of,O | |
misfolded,O | |
recombinant,O | |
proteins,O | |
that,O | |
colocalized,O | |
with,O | |
an,O | |
endoplasmic,O | |
reticulum,O | |
marker,O | |
.,O | |
, | |
The,O | |
four,O | |
latter,O | |
proteins,O | |
were,O | |
normally,O | |
secreted,O | |
but,O | |
were,O | |
unable,O | |
to,O | |
correct,O | |
cholesterol,O | |
storage,O | |
in,O | |
NPC2(-/-,B-Gene | |
),O | |
cells,O | |
.,O | |
, | |
Functional,O | |
characterization,O | |
of,O | |
the,O | |
mutant,O | |
proteins,O | |
showed,O | |
an,O | |
excellent,O | |
genotype,O | |
-,O | |
phenotype,O | |
correlation,O | |
in,O | |
the,O | |
three,O | |
cases,O | |
for,O | |
whom,O | |
a,O | |
clinical,O | |
history,O | |
was,O | |
available,O | |
.,O | |
, | |
#7951257 | |
Detecting,O | |
prion,O | |
protein,O | |
gene,O | |
mutations,O | |
by,O | |
denaturing,O | |
gradient,O | |
gel,O | |
electrophoresis,O | |
.,O | |
, | |
Mutations,O | |
of,O | |
the,O | |
prion,B-Gene | |
protein,I-Gene | |
(,B-Gene | |
PrP,I-Gene | |
),I-Gene | |
gene,O | |
are,O | |
present,O | |
in,O | |
patients,O | |
with,O | |
Gerstmann,O | |
-,O | |
Sträussler,O | |
-,O | |
Scheinker,O | |
syndrome,O | |
(,O | |
GSS,O | |
),O | |
,,O | |
familial,O | |
Creutzfeldt,O | |
-,O | |
Jakob,O | |
disease,O | |
(,O | |
CJD,O | |
),O | |
,,O | |
and,O | |
fatal,O | |
familial,O | |
insomnia,O | |
(,O | |
FFI,O | |
),O | |
.,O | |
, | |
We,O | |
developed,O | |
a,O | |
denaturing,O | |
gradient,O | |
gel,O | |
electrophoresis,O | |
(,O | |
DGGE,O | |
),O | |
strategy,O | |
that,O | |
readily,O | |
identifies,O | |
point,O | |
mutations,O | |
in,O | |
the,O | |
PrP,O | |
coding,O | |
sequence,O | |
.,O | |
, | |
By,O | |
comparison,O | |
with,O | |
appropriate,O | |
controls,O | |
,,O | |
haplotypes,O | |
often,O | |
may,O | |
be,O | |
deduced,O | |
.,O | |
, | |
This,O | |
method,O | |
permits,O | |
samples,O | |
from,O | |
many,O | |
patients,O | |
with,O | |
GSS,O | |
,,O | |
CJD,O | |
,,O | |
as,O | |
well,O | |
as,O | |
patients,O | |
with,O | |
unusual,O | |
degenerative,O | |
neurologic,O | |
disorders,O | |
,,O | |
to,O | |
be,O | |
screened,O | |
rapidly,O | |
,,O | |
sensitively,O | |
,,O | |
and,O | |
inexpensively,O | |
for,O | |
the,O | |
presence,O | |
of,O | |
known,O | |
and,O | |
novel,O | |
PrP,O | |
mutations,O | |
.,O | |
, | |
We,O | |
illustrate,O | |
the,O | |
sensitivity,O | |
of,O | |
this,O | |
approach,O | |
by,O | |
reporting,O | |
2,O | |
novel,O | |
polymorphisms,O | |
in,O | |
the,O | |
PrP,O | |
coding,O | |
sequence,O | |
.,O | |
, | |
#14517964 | |
BUB1,B-Gene | |
infrequently,O | |
mutated,O | |
in,O | |
human,O | |
breast,O | |
carcinomas,O | |
.,O | |
, | |
The,O | |
BUB1,B-Gene | |
gene,O | |
is,O | |
a,O | |
key,O | |
player,O | |
in,O | |
the,O | |
mitotic,O | |
spindle,O | |
checkpoint,O | |
machinery,O | |
that,O | |
monitors,O | |
proper,O | |
segregation,O | |
of,O | |
sister,O | |
chromatides,O | |
during,O | |
mitosis,O | |
.,O | |
, | |
It,O | |
has,O | |
been,O | |
suggested,O | |
that,O | |
mutations,O | |
in,O | |
BUB1,B-Gene | |
may,O | |
disrupt,O | |
the,O | |
spindle,O | |
checkpoint,O | |
and,O | |
thereby,O | |
cause,O | |
chromosomal,O | |
instability,O | |
,,O | |
which,O | |
is,O | |
a,O | |
hallmark,O | |
of,O | |
solid,O | |
tumors,O | |
including,O | |
those,O | |
from,O | |
the,O | |
breast,O | |
.,O | |
, | |
From,O | |
a,O | |
series,O | |
of,O | |
breast,O | |
carcinomas,O | |
we,O | |
selected,O | |
20,O | |
cases,O | |
with,O | |
genomic,O | |
instability,O | |
,,O | |
as,O | |
scored,O | |
by,O | |
Comparative,B-Gene | |
Genome,I-Gene | |
Hybridization,I-Gene | |
(,B-Gene | |
CGH,I-Gene | |
),I-Gene | |
,,O | |
and,O | |
without,O | |
somatic,O | |
TP53,B-Gene | |
(,B-Gene | |
p53,I-Gene | |
),I-Gene | |
mutations,O | |
,,O | |
and,O | |
sequenced,O | |
the,O | |
entire,O | |
coding,O | |
region,O | |
of,O | |
the,O | |
BUB1,B-Gene | |
gene,O | |
.,O | |
, | |
Two,O | |
different,O | |
constitutional,O | |
sequence,O | |
variants,O | |
were,O | |
found,O | |
;,O | |
a,O | |
base,O | |
substitution,O | |
in,O | |
exon,O | |
5,O | |
,,O | |
c.481G,B-SNP | |
>,I-SNP | |
A,I-SNP | |
(,O | |
CAG,O | |
>,O | |
CAA,O | |
,,O | |
a,O | |
synonymous,O | |
change,O | |
encoding,O | |
Gln144,O | |
),O | |
in,O | |
two,O | |
samples,O | |
,,O | |
and,O | |
a,O | |
base,O | |
substitution,O | |
8,O | |
bp,O | |
upstream,O | |
of,O | |
exon,O | |
10,O | |
,,O | |
c.1007,B-SNP | |
-,I-SNP | |
8T,I-SNP | |
>,I-SNP | |
C,I-SNP | |
in,O | |
two,O | |
other,O | |
samples,O | |
.,O | |
, | |
No,O | |
somatic,O | |
mutations,O | |
were,O | |
detected,O | |
.,O | |
, | |
These,O | |
results,O | |
indicate,O | |
that,O | |
genomic,O | |
instability,O | |
scored,O | |
as,O | |
copy,O | |
number,O | |
alterations,O | |
by,O | |
CGH,O | |
in,O | |
TP53,B-Gene | |
wild,O | |
type,O | |
breast,O | |
carcinomas,O | |
is,O | |
not,O | |
caused,O | |
by,O | |
somatic,O | |
mutations,O | |
in,O | |
the,O | |
BUB1,B-Gene | |
gene,O | |
.,O | |
, | |
#18656178 | |
A,O | |
comparative,O | |
analysis,O | |
of,O | |
the,O | |
genetic,O | |
epidemiology,O | |
of,O | |
deafness,O | |
in,O | |
the,O | |
United,O | |
States,O | |
in,O | |
two,O | |
sets,O | |
of,O | |
pedigrees,O | |
collected,O | |
more,O | |
than,O | |
a,O | |
century,O | |
apart,O | |
.,O | |
, | |
In,O | |
1898,O | |
,,O | |
E.A.,O | |
Fay,O | |
published,O | |
an,O | |
analysis,O | |
of,O | |
nearly,O | |
5000,O | |
marriages,O | |
among,O | |
deaf,O | |
individuals,O | |
in,O | |
America,O | |
collected,O | |
during,O | |
the,O | |
19(th,O | |
),O | |
century,O | |
.,O | |
, | |
Each,O | |
pedigree,O | |
included,O | |
three,O | |
-,O | |
generation,O | |
data,O | |
on,O | |
marriage,O | |
partners,O | |
that,O | |
included,O | |
at,O | |
least,O | |
one,O | |
deaf,O | |
proband,O | |
,,O | |
who,O | |
were,O | |
ascertained,O | |
by,O | |
complete,O | |
selection,O | |
.,O | |
, | |
We,O | |
recently,O | |
proposed,O | |
that,O | |
the,O | |
intense,O | |
phenotypic,O | |
assortative,O | |
mating,O | |
among,O | |
the,O | |
deaf,O | |
might,O | |
have,O | |
greatly,O | |
accelerated,O | |
the,O | |
normally,O | |
slow,O | |
response,O | |
to,O | |
relaxed,O | |
genetic,O | |
selection,O | |
against,O | |
deafness,O | |
that,O | |
began,O | |
in,O | |
many,O | |
Western,O | |
countries,O | |
with,O | |
the,O | |
introduction,O | |
of,O | |
sign,O | |
language,O | |
and,O | |
the,O | |
establishment,O | |
of,O | |
residential,O | |
schools,O | |
.,O | |
, | |
Simulation,O | |
studies,O | |
suggest,O | |
that,O | |
this,O | |
mechanism,O | |
might,O | |
have,O | |
doubled,O | |
the,O | |
frequency,O | |
of,O | |
the,O | |
commonest,O | |
forms,O | |
of,O | |
recessive,O | |
deafness,O | |
(,O | |
DFNB1,O | |
),O | |
in,O | |
this,O | |
country,O | |
during,O | |
the,O | |
past,O | |
200,O | |
years,O | |
.,O | |
, | |
To,O | |
test,O | |
this,O | |
prediction,O | |
,,O | |
we,O | |
collected,O | |
pedigree,O | |
data,O | |
on,O | |
311,O | |
contemporary,O | |
marriages,O | |
among,O | |
deaf,O | |
individuals,O | |
that,O | |
were,O | |
comparable,O | |
to,O | |
those,O | |
collected,O | |
by,O | |
Fay,O | |
.,O | |
, | |
Segregation,O | |
analysis,O | |
of,O | |
the,O | |
resulting,O | |
data,O | |
revealed,O | |
that,O | |
the,O | |
estimated,O | |
proportion,O | |
of,O | |
noncomplementary,O | |
matings,O | |
that,O | |
can,O | |
produce,O | |
only,O | |
deaf,O | |
children,O | |
has,O | |
increased,O | |
by,O | |
a,O | |
factor,O | |
of,O | |
more,O | |
than,O | |
five,O | |
in,O | |
the,O | |
past,O | |
100,O | |
years,O | |
.,O | |
, | |
Additional,O | |
analysis,O | |
within,O | |
our,O | |
sample,O | |
of,O | |
contemporary,O | |
pedigrees,O | |
showed,O | |
that,O | |
there,O | |
was,O | |
a,O | |
statistically,O | |
significant,O | |
linear,O | |
increase,O | |
in,O | |
the,O | |
prevalence,O | |
of,O | |
pathologic,O | |
GJB2,B-Gene | |
mutations,O | |
when,O | |
the,O | |
data,O | |
on,O | |
441,O | |
probands,O | |
were,O | |
partitioned,O | |
into,O | |
three,O | |
20,O | |
-,O | |
year,O | |
birth,O | |
cohorts,O | |
(,O | |
1920,O | |
through,O | |
1980,O | |
),O | |
.,O | |
, | |
These,O | |
data,O | |
are,O | |
consistent,O | |
with,O | |
the,O | |
increase,O | |
in,O | |
the,O | |
frequency,O | |
of,O | |
DFNB1,O | |
predicted,O | |
by,O | |
our,O | |
previous,O | |
simulation,O | |
studies,O | |
and,O | |
provide,O | |
convincing,O | |
evidence,O | |
for,O | |
the,O | |
important,O | |
influence,O | |
that,O | |
assortative,O | |
mating,O | |
can,O | |
have,O | |
on,O | |
the,O | |
frequency,O | |
of,O | |
common,O | |
genes,O | |
for,O | |
deafness,O | |
.,O | |
, | |
#18371931 | |
Loss,O | |
of,O | |
nephrocystin-3,B-Gene | |
function,O | |
can,O | |
cause,O | |
embryonic,O | |
lethality,O | |
,,O | |
Meckel,O | |
-,O | |
Gruber,O | |
-,O | |
like,O | |
syndrome,O | |
,,O | |
situs,O | |
inversus,O | |
,,O | |
and,O | |
renal,O | |
-,O | |
hepatic,O | |
-,O | |
pancreatic,O | |
dysplasia,O | |
.,O | |
, | |
Many,O | |
genetic,O | |
diseases,O | |
have,O | |
been,O | |
linked,O | |
to,O | |
the,O | |
dysfunction,O | |
of,O | |
primary,O | |
cilia,O | |
,,O | |
which,O | |
occur,O | |
nearly,O | |
ubiquitously,O | |
in,O | |
the,O | |
body,O | |
and,O | |
act,O | |
as,O | |
solitary,O | |
cellular,O | |
mechanosensory,O | |
organelles,O | |
.,O | |
, | |
The,O | |
list,O | |
of,O | |
clinical,O | |
manifestations,O | |
and,O | |
affected,O | |
tissues,O | |
in,O | |
cilia,O | |
-,O | |
related,O | |
disorders,O | |
(,O | |
ciliopathies,O | |
),O | |
such,O | |
as,O | |
nephronophthisis,O | |
is,O | |
broad,O | |
and,O | |
has,O | |
been,O | |
attributed,O | |
to,O | |
the,O | |
wide,O | |
expression,O | |
pattern,O | |
of,O | |
ciliary,O | |
proteins,O | |
.,O | |
, | |
However,O | |
,,O | |
little,O | |
is,O | |
known,O | |
about,O | |
the,O | |
molecular,O | |
mechanisms,O | |
leading,O | |
to,O | |
this,O | |
dramatic,O | |
diversity,O | |
of,O | |
phenotypes,O | |
.,O | |
, | |
We,O | |
recently,O | |
reported,O | |
hypomorphic,O | |
NPHP3,B-Gene | |
mutations,O | |
in,O | |
children,O | |
and,O | |
young,O | |
adults,O | |
with,O | |
isolated,O | |
nephronophthisis,O | |
and,O | |
associated,O | |
hepatic,O | |
fibrosis,O | |
or,O | |
tapetoretinal,O | |
degeneration,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
chose,O | |
a,O | |
combinatorial,O | |
approach,O | |
in,O | |
mice,O | |
and,O | |
humans,O | |
to,O | |
define,O | |
the,O | |
phenotypic,O | |
spectrum,O | |
of,O | |
NPHP3,B-Gene | |
/,I-Gene | |
Nphp3,I-Gene | |
mutations,O | |
and,O | |
the,O | |
role,O | |
of,O | |
the,O | |
nephrocystin-3,B-Gene | |
protein,O | |
.,O | |
, | |
We,O | |
demonstrate,O | |
that,O | |
the,O | |
pcy,O | |
mutation,O | |
generates,O | |
a,O | |
hypomorphic,O | |
Nphp3,B-Gene | |
allele,O | |
that,O | |
is,O | |
responsible,O | |
for,O | |
the,O | |
cystic,O | |
kidney,O | |
disease,O | |
phenotype,O | |
,,O | |
whereas,O | |
complete,O | |
loss,O | |
of,O | |
Nphp3,B-Gene | |
function,O | |
results,O | |
in,O | |
situs,O | |
inversus,O | |
,,O | |
congenital,O | |
heart,O | |
defects,O | |
,,O | |
and,O | |
embryonic,O | |
lethality,O | |
in,O | |
mice,O | |
.,O | |
, | |
In,O | |
humans,O | |
,,O | |
we,O | |
show,O | |
that,O | |
NPHP3,B-Gene | |
mutations,O | |
can,O | |
cause,O | |
a,O | |
broad,O | |
clinical,O | |
spectrum,O | |
of,O | |
early,O | |
embryonic,O | |
patterning,O | |
defects,O | |
comprising,O | |
situs,O | |
inversus,O | |
,,O | |
polydactyly,O | |
,,O | |
central,O | |
nervous,O | |
system,O | |
malformations,O | |
,,O | |
structural,O | |
heart,O | |
defects,O | |
,,O | |
preauricular,O | |
fistulas,O | |
,,O | |
and,O | |
a,O | |
wide,O | |
range,O | |
of,O | |
congenital,O | |
anomalies,O | |
of,O | |
the,O | |
kidney,O | |
and,O | |
urinary,O | |
tract,O | |
(,O | |
CAKUT,O | |
),O | |
.,O | |
, | |
On,O | |
the,O | |
functional,O | |
level,O | |
,,O | |
we,O | |
show,O | |
that,O | |
nephrocystin-3,B-Gene | |
directly,O | |
interacts,O | |
with,O | |
inversin,O | |
and,O | |
can,O | |
inhibit,O | |
like,O | |
inversin,O | |
canonical,O | |
Wnt,O | |
signaling,O | |
,,O | |
whereas,O | |
nephrocystin-3,B-Gene | |
deficiency,O | |
leads,O | |
in,O | |
Xenopus,O | |
laevis,O | |
to,O | |
typical,O | |
planar,O | |
cell,O | |
polarity,O | |
defects,O | |
,,O | |
suggesting,O | |
a,O | |
role,O | |
in,O | |
the,O | |
control,O | |
of,O | |
canonical,O | |
and,O | |
noncanonical,O | |
(,O | |
planar,O | |
cell,O | |
polarity,O | |
),O | |
, | |
Wnt,O | |
signaling,O | |
.,O | |
, | |
#12970847 | |
Recent,O | |
advances,O | |
in,O | |
human,O | |
quantitative,O | |
-,O | |
trait,O | |
-,O | |
locus,O | |
mapping,O | |
:,O | |
comparison,O | |
of,O | |
methods,O | |
for,O | |
selected,O | |
sibling,O | |
pairs,O | |
.,O | |
, | |
During,O | |
the,O | |
past,O | |
few,O | |
years,O | |
,,O | |
there,O | |
has,O | |
been,O | |
a,O | |
great,O | |
deal,O | |
of,O | |
new,O | |
work,O | |
on,O | |
methods,O | |
for,O | |
mapping,O | |
quantitative,O | |
-,O | |
trait,O | |
loci,O | |
by,O | |
use,O | |
of,O | |
sibling,O | |
pairs,O | |
and,O | |
sibships,O | |
.,O | |
, | |
There,O | |
are,O | |
several,O | |
new,O | |
methods,O | |
based,O | |
on,O | |
linear,O | |
regression,O | |
,,O | |
as,O | |
well,O | |
as,O | |
several,O | |
more,O | |
that,O | |
are,O | |
based,O | |
on,O | |
score,O | |
statistics,O | |
.,O | |
, | |
In,O | |
theory,O | |
,,O | |
most,O | |
of,O | |
the,O | |
new,O | |
methods,O | |
should,O | |
be,O | |
relatively,O | |
robust,O | |
to,O | |
violations,O | |
of,O | |
distributional,O | |
assumptions,O | |
and,O | |
to,O | |
selected,O | |
sampling,O | |
,,O | |
but,O | |
,,O | |
in,O | |
practice,O | |
,,O | |
there,O | |
has,O | |
been,O | |
little,O | |
evaluation,O | |
of,O | |
how,O | |
the,O | |
methods,O | |
perform,O | |
on,O | |
selected,O | |
samples,O | |
.,O | |
, | |
We,O | |
survey,O | |
most,O | |
of,O | |
the,O | |
new,O | |
regression,O | |
-,O | |
based,O | |
statistics,O | |
and,O | |
score,O | |
statistics,O | |
and,O | |
propose,O | |
a,O | |
few,O | |
minor,O | |
variations,O | |
on,O | |
the,O | |
score,O | |
statistics,O | |
.,O | |
, | |
We,O | |
use,O | |
simulation,O | |
to,O | |
evaluate,O | |
the,O | |
type,O | |
I,O | |
error,O | |
and,O | |
the,O | |
power,O | |
of,O | |
all,O | |
of,O | |
the,O | |
statistics,O | |
,,O | |
considering,O | |
(,O | |
a,O | |
),O | |
population,O | |
samples,O | |
of,O | |
sibling,O | |
pairs,O | |
and,O | |
(,O | |
b,O | |
),O | |
sibling,O | |
pairs,O | |
ascertained,O | |
on,O | |
the,O | |
basis,O | |
of,O | |
at,O | |
least,O | |
one,O | |
sibling,O | |
with,O | |
a,O | |
trait,O | |
value,O | |
in,O | |
the,O | |
top,O | |
10,O | |
%,O | |
of,O | |
the,O | |
distribution,O | |
.,O | |
, | |
Most,O | |
of,O | |
the,O | |
statistics,O | |
have,O | |
correct,O | |
type,O | |
I,O | |
error,O | |
for,O | |
selected,O | |
samples,O | |
.,O | |
, | |
The,O | |
statistics,O | |
proposed,O | |
by,O | |
Xu,O | |
et,O | |
al,O | |
.,O | |
, | |
and,O | |
by,O | |
Sham,O | |
and,O | |
Purcell,O | |
are,O | |
generally,O | |
the,O | |
most,O | |
powerful,O | |
,,O | |
along,O | |
with,O | |
one,O | |
of,O | |
our,O | |
score,O | |
statistic,O | |
variants,O | |
.,O | |
, | |
Even,O | |
among,O | |
the,O | |
methods,O | |
that,O | |
are,O | |
most,O | |
powerful,O | |
for,O | |
",O | |
nice,O | |
",O | |
data,O | |
,,O | |
some,O | |
are,O | |
more,O | |
robust,O | |
than,O | |
others,O | |
to,O | |
non,O | |
-,O | |
Gaussian,O | |
trait,O | |
models,O | |
and/or,O | |
misspecified,O | |
trait,O | |
parameters,O | |
.,O | |
, | |
#11968091 | |
GJB2,B-Gene | |
mutations,O | |
in,O | |
Iranians,O | |
with,O | |
autosomal,O | |
recessive,O | |
non,O | |
-,O | |
syndromic,O | |
sensorineural,O | |
hearing,O | |
loss,O | |
.,O | |
, | |
Hereditary,O | |
hearing,O | |
loss,O | |
(,O | |
HHL,O | |
),O | |
is,O | |
an,O | |
extremely,O | |
common,O | |
disorder,O | |
.,O | |
, | |
About,O | |
70,O | |
%,O | |
of,O | |
HHL,O | |
is,O | |
non,O | |
-,O | |
syndromic,O | |
,,O | |
with,O | |
autosomal,O | |
recessive,O | |
forms,O | |
accounting,O | |
for,O | |
approximately,O | |
85,O | |
%,O | |
of,O | |
the,O | |
genetic,O | |
load,O | |
.,O | |
, | |
Although,O | |
very,O | |
heterogeneous,O | |
,,O | |
the,O | |
most,O | |
common,O | |
cause,O | |
of,O | |
HHL,O | |
in,O | |
many,O | |
different,O | |
world,O | |
populations,O | |
is,O | |
mutations,O | |
of,O | |
GJB2,B-Gene | |
,,I-Gene | |
a,O | |
gene,O | |
that,O | |
encodes,O | |
the,O | |
gap,O | |
junction,O | |
protein,O | |
connexin,B-Gene | |
26,I-Gene | |
(,B-Gene | |
Cx26,I-Gene | |
),I-Gene | |
.,O | |
, | |
This,O | |
study,O | |
investigates,O | |
the,O | |
contribution,O | |
of,O | |
GJB2,B-Gene | |
to,O | |
the,O | |
autosomal,O | |
recessive,O | |
non,O | |
-,O | |
syndromic,O | |
deafness,O | |
(,O | |
ARNSD,O | |
),O | |
load,O | |
in,O | |
the,O | |
Iranian,O | |
population,O | |
.,O | |
, | |
One,O | |
hundred,O | |
sixty,O | |
eight,O | |
persons,O | |
from,O | |
83,O | |
families,O | |
were,O | |
studied,O | |
.,O | |
, | |
GJB2,B-Gene | |
-,I-Gene | |
related,O | |
deafness,O | |
was,O | |
diagnosed,O | |
in,O | |
9,O | |
families,O | |
(,O | |
4,O | |
,,O | |
35delG,B-SNP | |
homozygotes,O | |
;,O | |
3,O | |
,,O | |
35delG,B-SNP | |
compound,O | |
heterozygotes,O | |
;,O | |
1,O | |
,,O | |
W24X,B-SNP | |
homozygote,O | |
;,O | |
1,O | |
,,O | |
non-35delG,B-SNP | |
compound,O | |
heterozygote,O | |
),O | |
.,O | |
, | |
The,O | |
carrier,O | |
frequency,O | |
of,O | |
the,O | |
35delG,B-SNP | |
allele,O | |
in,O | |
this,O | |
population,O | |
was,O | |
approximately,O | |
1,O | |
%,O | |
(,O | |
1/83,O | |
),O | |
.,O | |
, | |
Because,O | |
the,O | |
relative,O | |
frequency,O | |
of,O | |
Cx26,B-Gene | |
mutations,O | |
is,O | |
much,O | |
less,O | |
than,O | |
in,O | |
the,O | |
other,O | |
populations,O | |
,,O | |
it,O | |
is,O | |
possible,O | |
that,O | |
mutations,O | |
in,O | |
other,O | |
genes,O | |
play,O | |
a,O | |
major,O | |
role,O | |
in,O | |
ARNSD,O | |
in,O | |
Iran,O | |
.,O | |
, | |
#18452888 | |
Deleterious,O | |
mutations,O | |
in,O | |
the,O | |
Zinc,B-Gene | |
-,I-Gene | |
Finger,I-Gene | |
469,I-Gene | |
gene,O | |
cause,O | |
brittle,O | |
cornea,O | |
syndrome,O | |
.,O | |
, | |
Brittle,O | |
cornea,O | |
syndrome,O | |
(,O | |
BCS,O | |
),O | |
is,O | |
an,O | |
autosomal,O | |
-,O | |
recessive,O | |
disorder,O | |
characterized,O | |
by,O | |
a,O | |
thin,O | |
cornea,O | |
that,O | |
tends,O | |
to,O | |
perforate,O | |
,,O | |
causing,O | |
progressive,O | |
visual,O | |
loss,O | |
and,O | |
blindness,O | |
.,O | |
, | |
Additional,O | |
systemic,O | |
symptoms,O | |
such,O | |
as,O | |
joint,O | |
hypermotility,O | |
,,O | |
hyperlaxity,O | |
of,O | |
the,O | |
skin,O | |
,,O | |
and,O | |
kyphoscoliosis,O | |
place,O | |
BCS,O | |
among,O | |
the,O | |
connective,O | |
-,O | |
tissue,O | |
disorders,O | |
.,O | |
, | |
Previously,O | |
,,O | |
we,O | |
assigned,O | |
the,O | |
disease,O | |
gene,O | |
to,O | |
a,O | |
4.7,O | |
Mb,O | |
interval,O | |
on,O | |
chromosome,O | |
16q24,O | |
.,O | |
, | |
In,O | |
order,O | |
to,O | |
clone,O | |
the,O | |
BCS,O | |
gene,O | |
,,O | |
we,O | |
first,O | |
narrowed,O | |
the,O | |
disease,O | |
locus,O | |
to,O | |
a,O | |
2.8,O | |
Mb,O | |
interval,O | |
and,O | |
systematically,O | |
sequenced,O | |
genes,O | |
expressed,O | |
in,O | |
connective,O | |
tissue,O | |
in,O | |
this,O | |
chromosomal,O | |
segment,O | |
.,O | |
, | |
We,O | |
have,O | |
identified,O | |
two,O | |
frameshift,O | |
mutations,O | |
in,O | |
the,O | |
Zinc,B-Gene | |
-,I-Gene | |
Finger,I-Gene | |
469,I-Gene | |
gene,O | |
(,B-Gene | |
ZNF469,I-Gene | |
),I-Gene | |
.,O | |
, | |
In,O | |
five,O | |
unrelated,O | |
patients,O | |
of,O | |
Tunisian,O | |
Jewish,O | |
ancestry,O | |
,,O | |
we,O | |
found,O | |
a,O | |
1,O | |
bp,O | |
deletion,O | |
at,O | |
position,O | |
5943,O | |
(,B-SNP | |
5943,I-SNP | |
delA,I-SNP | |
),I-SNP | |
,,O | |
and,O | |
in,O | |
an,O | |
inbred,O | |
Palestinian,O | |
family,O | |
we,O | |
detected,O | |
a,O | |
single,O | |
-,O | |
nucleotide,O | |
deletion,O | |
at,O | |
position,O | |
9527,O | |
(,B-SNP | |
9527,I-SNP | |
delG,I-SNP | |
),I-SNP | |
.,O | |
, | |
The,O | |
function,O | |
of,O | |
ZNF469,B-Gene | |
is,O | |
unknown,O | |
.,O | |
, | |
However,O | |
,,O | |
a,O | |
30,O | |
%,O | |
homology,O | |
to,O | |
a,O | |
number,O | |
of,O | |
collagens,O | |
suggests,O | |
that,O | |
it,O | |
could,O | |
act,O | |
as,O | |
a,O | |
transcription,O | |
factor,O | |
involved,O | |
in,O | |
the,O | |
synthesis,O | |
and/or,O | |
organization,O | |
of,O | |
collagen,O | |
fibers,O | |
.,O | |
, | |
#8535441 | |
Comparison,O | |
between,O | |
medium,O | |
-,O | |
chain,O | |
acyl,B-Gene | |
-,I-Gene | |
CoA,I-Gene | |
dehydrogenase,I-Gene | |
mutant,O | |
proteins,O | |
overexpressed,O | |
in,O | |
bacterial,O | |
and,O | |
mammalian,O | |
cells,O | |
.,O | |
, | |
Medium,B-Gene | |
-,I-Gene | |
chain,I-Gene | |
acyl,I-Gene | |
-,I-Gene | |
CoA,I-Gene | |
dehydrogenase,I-Gene | |
(,B-Gene | |
MCAD,I-Gene | |
),I-Gene | |
deficiency,O | |
is,O | |
a,O | |
potentially,O | |
lethal,O | |
inherited,O | |
defect,O | |
in,O | |
the,O | |
beta,O | |
-,O | |
oxidation,O | |
of,O | |
fatty,O | |
acids,O | |
.,O | |
, | |
By,O | |
comparing,O | |
the,O | |
behaviour,O | |
of,O | |
five,O | |
missense,O | |
MCAD,B-Gene | |
mutant,O | |
proteins,O | |
expressed,O | |
in,O | |
COS,O | |
cells,O | |
and,O | |
in,O | |
Escherichia,O | |
coli,O | |
,,O | |
we,O | |
can,O | |
define,O | |
some,O | |
of,O | |
these,O | |
as,O | |
",O | |
pure,O | |
folding,O | |
mutants,O | |
.,O | |
",O | |
, | |
Upon,O | |
expression,O | |
in,O | |
E.,O | |
coli,O | |
,,O | |
these,O | |
mutant,O | |
proteins,O | |
produce,O | |
activity,O | |
levels,O | |
in,O | |
the,O | |
range,O | |
of,O | |
the,O | |
wild,O | |
-,O | |
type,O | |
enzyme,O | |
only,O | |
if,O | |
the,O | |
chaperonins,O | |
GroESL,O | |
are,O | |
co,O | |
-,O | |
overproduced,O | |
.,O | |
, | |
When,O | |
overexpressed,O | |
in,O | |
COS,O | |
cells,O | |
,,O | |
the,O | |
pure,O | |
folding,O | |
mutants,O | |
display,O | |
enzyme,O | |
activities,O | |
comparable,O | |
to,O | |
the,O | |
wild,O | |
-,O | |
type,O | |
enzyme,O | |
.,O | |
, | |
The,O | |
results,O | |
suggest,O | |
that,O | |
the,O | |
MCAD,B-Gene | |
mutations,O | |
can,O | |
be,O | |
modulated,O | |
by,O | |
chaperones,O | |
,,O | |
a,O | |
phenomenon,O | |
that,O | |
may,O | |
influence,O | |
the,O | |
manifestation,O | |
of,O | |
the,O | |
MCAD,O | |
disease,O | |
.,O | |
, | |
#8535449 | |
A,O | |
48,O | |
-,O | |
bp,O | |
insertion,O | |
between,O | |
exon,O | |
13,O | |
and,O | |
14,O | |
of,O | |
the,O | |
HEXB,B-Gene | |
gene,O | |
causes,O | |
infantile,O | |
-,O | |
onset,O | |
Sandhoff,O | |
disease,O | |
.,O | |
, | |
#12958705 | |
Genomewide,O | |
linkage,O | |
and,O | |
linkage,O | |
disequilibrium,O | |
analyses,O | |
identify,O | |
COL6A1,B-Gene | |
,,I-Gene | |
on,O | |
chromosome,O | |
21,O | |
,,O | |
as,O | |
the,O | |
locus,O | |
for,O | |
ossification,O | |
of,O | |
the,O | |
posterior,O | |
longitudinal,O | |
ligament,O | |
of,O | |
the,O | |
spine,O | |
.,O | |
, | |
Ossification,O | |
of,O | |
the,O | |
posterior,O | |
longitudinal,O | |
ligament,O | |
(,O | |
OPLL,O | |
),O | |
of,O | |
the,O | |
spine,O | |
is,O | |
a,O | |
subset,O | |
of,O | |
",O | |
bone,O | |
-,O | |
forming,O | |
",O | |
diseases,O | |
,,O | |
characterized,O | |
by,O | |
ectopic,O | |
ossification,O | |
in,O | |
the,O | |
spinal,O | |
ligaments,O | |
.,O | |
, | |
OPLL,O | |
is,O | |
a,O | |
common,O | |
disorder,O | |
among,O | |
elderly,O | |
populations,O | |
in,O | |
eastern,O | |
Asia,O | |
and,O | |
is,O | |
the,O | |
leading,O | |
cause,O | |
of,O | |
spinal,O | |
myelopathy,O | |
in,O | |
Japan,O | |
.,O | |
, | |
We,O | |
performed,O | |
a,O | |
genomewide,O | |
linkage,O | |
study,O | |
with,O | |
142,O | |
affected,O | |
sib,O | |
pairs,O | |
,,O | |
to,O | |
identify,O | |
genetic,O | |
loci,O | |
related,O | |
to,O | |
OPLL,O | |
.,O | |
, | |
In,O | |
multipoint,O | |
linkage,O | |
analysis,O | |
using,O | |
GENEHUNTER,O | |
-,O | |
PLUS,O | |
,,O | |
evidence,O | |
of,O | |
linkage,O | |
to,O | |
OPLL,O | |
was,O | |
detected,O | |
on,O | |
chromosomes,O | |
1p,O | |
,,O | |
6p,O | |
,,O | |
11q,O | |
,,O | |
14q,O | |
,,O | |
16q,O | |
,,O | |
and,O | |
21q,O | |
.,O | |
, | |
The,O | |
best,O | |
evidence,O | |
of,O | |
linkage,O | |
was,O | |
detected,O | |
near,O | |
D21S1903,O | |
on,O | |
chromosome,O | |
21q22.3,O | |
(,O | |
maximum,O | |
Zlr=3.97,O | |
),O | |
;,O | |
therefore,O | |
,,O | |
the,O | |
linkage,O | |
region,O | |
was,O | |
extensively,O | |
investigated,O | |
for,O | |
linkage,O | |
disequilibrium,O | |
with,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphisms,O | |
(,O | |
SNPs,O | |
),O | |
covering,O | |
20,O | |
Mb,O | |
.,O | |
, | |
One,O | |
hundred,O | |
fifty,O | |
positional,O | |
candidate,O | |
genes,O | |
lie,O | |
in,O | |
the,O | |
region,O | |
,,O | |
and,O | |
600,O | |
gene,O | |
-,O | |
based,O | |
SNPs,O | |
were,O | |
genotyped,O | |
.,O | |
, | |
There,O | |
were,O | |
positive,O | |
allelic,O | |
associations,O | |
with,O | |
seven,O | |
genes,O | |
(,O | |
P<.01,O | |
),O | |
in,O | |
280,O | |
patients,O | |
and,O | |
210,O | |
controls,O | |
,,O | |
and,O | |
four,O | |
of,O | |
the,O | |
seven,O | |
genes,O | |
were,O | |
clustered,O | |
within,O | |
a,O | |
region,O | |
of,O | |
750,O | |
kb,O | |
,,O | |
approximately,O | |
1.2,O | |
Mb,O | |
telomeric,O | |
to,O | |
D21S1903,O | |
.,O | |
, | |
Extensive,O | |
linkage,O | |
disequilibrium,O | |
and,O | |
association,O | |
studies,O | |
of,O | |
the,O | |
four,O | |
genes,O | |
indicated,O | |
that,O | |
SNPs,O | |
in,O | |
the,O | |
collagen,B-Gene | |
6A1,I-Gene | |
gene,O | |
(,B-Gene | |
COL6A1,I-Gene | |
),I-Gene | |
were,O | |
strongly,O | |
associated,O | |
with,O | |
OPLL,O | |
(,O | |
P=.000003,O | |
for,O | |
the,O | |
SNP,O | |
in,O | |
intron,O | |
32,O | |
, | |
[,O | |
-29,O | |
],O | |
),O | |
.,O | |
, | |
Haplotype,O | |
analysis,O | |
with,O | |
three,O | |
SNPs,O | |
in,O | |
COL6A1,B-Gene | |
gave,O | |
a,O | |
single,O | |
-,O | |
point,O | |
P,O | |
value,O | |
of.0000007,O | |
.,O | |
, | |
Identification,O | |
of,O | |
the,O | |
locus,O | |
of,O | |
susceptibility,O | |
to,O | |
OPLL,O | |
by,O | |
genomewide,O | |
linkage,O | |
and,O | |
linkage,O | |
disequilibrium,O | |
studies,O | |
permits,O | |
us,O | |
to,O | |
investigate,O | |
the,O | |
pathogenesis,O | |
of,O | |
the,O | |
disease,O | |
,,O | |
which,O | |
may,O | |
lead,O | |
to,O | |
the,O | |
development,O | |
of,O | |
novel,O | |
therapeutic,O | |
tools,O | |
.,O | |
, | |
#14658095 | |
Linkage,O | |
at,O | |
12q24,O | |
with,O | |
systemic,O | |
lupus,O | |
erythematosus,O | |
(,O | |
SLE,O | |
),O | |
is,O | |
established,O | |
and,O | |
confirmed,O | |
in,O | |
Hispanic,O | |
and,O | |
European,O | |
American,O | |
families,O | |
.,O | |
, | |
Systemic,O | |
lupus,O | |
erythematosus,O | |
(,O | |
SLE,O | |
),O | |
is,O | |
a,O | |
chronic,O | |
,,O | |
complex,O | |
,,O | |
and,O | |
systemic,O | |
human,O | |
autoimmune,O | |
disease,O | |
,,O | |
with,O | |
both,O | |
an,O | |
environmental,O | |
component,O | |
and,O | |
a,O | |
heritable,O | |
predisposition,O | |
.,O | |
, | |
Clinical,O | |
studies,O | |
,,O | |
reinforced,O | |
by,O | |
epidemiology,O | |
and,O | |
genetics,O | |
,,O | |
show,O | |
impressive,O | |
variation,O | |
in,O | |
disease,O | |
severity,O | |
,,O | |
expression,O | |
,,O | |
prevalence,O | |
,,O | |
and,O | |
incidence,O | |
by,O | |
ethnicity,O | |
and,O | |
sex,O | |
.,O | |
, | |
To,O | |
identify,O | |
the,O | |
novel,O | |
SLE,O | |
susceptibility,O | |
loci,O | |
,,O | |
we,O | |
performed,O | |
a,O | |
genomewide,O | |
scan,O | |
with,O | |
318,O | |
markers,O | |
on,O | |
37,O | |
multiplex,O | |
Hispanic,O | |
families,O | |
,,O | |
using,O | |
a,O | |
nonparametric,O | |
penetrance,O | |
-,O | |
independent,O | |
affected,O | |
-,O | |
only,O | |
allele,O | |
-,O | |
sharing,O | |
method,O | |
.,O | |
, | |
Three,O | |
chromosomal,O | |
regions,O | |
(,O | |
12q24,O | |
,,O | |
16p13,O | |
,,O | |
and,O | |
16q12,O | |
-,O | |
21,O | |
),O | |
exceeded,O | |
our,O | |
predetermined,O | |
threshold,O | |
(,O | |
Zlr>2.32,O | |
;,O | |
nominal,O | |
P<.01,O | |
),O | |
for,O | |
further,O | |
evaluation,O | |
.,O | |
, | |
Suspected,O | |
linkages,O | |
at,O | |
12q24,O | |
,,O | |
16p13,O | |
,,O | |
and,O | |
16q12,O | |
-,O | |
21,O | |
were,O | |
tested,O | |
in,O | |
an,O | |
independent,O | |
data,O | |
set,O | |
consisting,O | |
of,O | |
92,O | |
European,O | |
American,O | |
(,O | |
EA-1,O | |
),O | |
and,O | |
55,O | |
African,O | |
American,O | |
(,O | |
AA,O | |
),O | |
families,O | |
.,O | |
, | |
The,O | |
linkage,O | |
at,O | |
12q24,O | |
was,O | |
replicated,O | |
in,O | |
EA-1,O | |
(,O | |
Zlr=3.06,O | |
;,O | |
P=.001,O | |
),O | |
but,O | |
not,O | |
in,O | |
AA,O | |
(,O | |
Zlr=0.37,O | |
;,O | |
P=.35,O | |
),O | |
.,O | |
, | |
Although,O | |
neither,O | |
the,O | |
16p13,O | |
nor,O | |
the,O | |
16q12,O | |
-,O | |
21,O | |
was,O | |
confirmed,O | |
in,O | |
EA-1,O | |
or,O | |
AA,O | |
,,O | |
the,O | |
suggestive,O | |
linkage,O | |
(,O | |
Zlr=3.06,O | |
;,O | |
P=.001,O | |
),O | |
at,O | |
16q12,O | |
-,O | |
21,O | |
is,O | |
sufficient,O | |
to,O | |
confirm,O | |
the,O | |
significant,O | |
linkage,O | |
,,O | |
reported,O | |
elsewhere,O | |
,,O | |
at,O | |
this,O | |
location,O | |
.,O | |
, | |
The,O | |
evidence,O | |
for,O | |
linkage,O | |
at,O | |
12q24,O | |
in,O | |
the,O | |
129,O | |
combined,O | |
(,O | |
Hispanic,O | |
and,O | |
EA-1,O | |
),O | |
families,O | |
exceeded,O | |
the,O | |
threshold,O | |
for,O | |
genomewide,O | |
significance,O | |
(,O | |
Zlr=4.39,O | |
;,O | |
P=5.7x10,O | |
-,O | |
6,O | |
;,O | |
nonparametric,O | |
LOD=4.19,O | |
),O | |
.,O | |
, | |
Parametric,O | |
linkage,O | |
analyses,O | |
suggested,O | |
a,O | |
low,O | |
-,O | |
penetrance,O | |
,,O | |
dominant,O | |
model,O | |
(,O | |
LOD=3.72,O | |
),O | |
.,O | |
, | |
To,O | |
confirm,O | |
the,O | |
linkage,O | |
effect,O | |
at,O | |
12q24,O | |
,,O | |
we,O | |
performed,O | |
linkage,O | |
analysis,O | |
in,O | |
another,O | |
set,O | |
of,O | |
82,O | |
independent,O | |
European,O | |
American,O | |
families,O | |
(,O | |
EA-2,O | |
),O | |
.,O | |
, | |
The,O | |
evidence,O | |
for,O | |
linkage,O | |
was,O | |
confirmed,O | |
(,O | |
Zlr=2.11,O | |
;,O | |
P=.017,O | |
),O | |
.,O | |
, | |
Therefore,O | |
,,O | |
our,O | |
results,O | |
have,O | |
detected,O | |
,,O | |
established,O | |
,,O | |
and,O | |
confirmed,O | |
the,O | |
existence,O | |
of,O | |
a,O | |
novel,O | |
SLE,O | |
susceptibility,O | |
locus,O | |
at,O | |
12q24,O | |
(,O | |
designated,O | |
",O | |
SLEB4,O | |
",O | |
),O | |
that,O | |
may,O | |
cause,O | |
lupus,O | |
,,O | |
especially,O | |
in,O | |
Hispanic,O | |
and,O | |
European,O | |
American,O | |
families,O | |
.,O | |
, | |
#8940267 | |
Spectrum,O | |
of,O | |
mutations,O | |
in,O | |
the,O | |
COL4A5,B-Gene | |
collagen,O | |
gene,O | |
in,O | |
X,O | |
-,O | |
linked,O | |
Alport,O | |
syndrome,O | |
.,O | |
, | |
Alport,O | |
syndrome,O | |
is,O | |
a,O | |
mainly,O | |
X,O | |
-,O | |
linked,O | |
hereditary,O | |
disease,O | |
of,O | |
basement,O | |
membranes,O | |
that,O | |
is,O | |
characterized,O | |
by,O | |
progressive,O | |
renal,O | |
failure,O | |
,,O | |
deafness,O | |
,,O | |
and,O | |
ocular,O | |
lesions,O | |
.,O | |
, | |
It,O | |
is,O | |
associated,O | |
with,O | |
mutations,O | |
of,O | |
the,O | |
COL4A5,B-Gene | |
gene,O | |
located,O | |
at,O | |
Xq22,O | |
and,O | |
encoding,O | |
the,O | |
alpha5,O | |
chain,O | |
of,O | |
type,O | |
IV,O | |
collagen,O | |
.,O | |
, | |
We,O | |
have,O | |
screened,O | |
48,O | |
of,O | |
the,O | |
51,O | |
exons,O | |
of,O | |
the,O | |
COL4A5,B-Gene | |
gene,O | |
by,O | |
SSCP,O | |
analysis,O | |
and,O | |
have,O | |
identified,O | |
64,O | |
mutations,O | |
and,O | |
10,O | |
sequence,O | |
variants,O | |
among,O | |
131,O | |
unrelated,O | |
Alport,O | |
syndrome,O | |
patients,O | |
.,O | |
, | |
This,O | |
represents,O | |
a,O | |
mutation,O | |
-,O | |
detection,O | |
rate,O | |
of,O | |
50,O | |
%,O | |
.,O | |
, | |
There,O | |
were,O | |
no,O | |
hot,O | |
-,O | |
spot,O | |
mutations,O | |
and,O | |
no,O | |
recurrent,O | |
mutations,O | |
in,O | |
our,O | |
population,O | |
.,O | |
, | |
The,O | |
identified,O | |
mutations,O | |
were,O | |
6,O | |
nonsense,O | |
mutations,O | |
,,O | |
12,O | |
frameshift,O | |
mutations,O | |
,,O | |
17,O | |
splice,O | |
-,O | |
site,O | |
mutations,O | |
,,O | |
and,O | |
29,O | |
missense,O | |
mutations,O | |
,,O | |
27,O | |
of,O | |
the,O | |
latter,O | |
being,O | |
glycine,O | |
substitutions,O | |
in,O | |
the,O | |
collagenous,O | |
domain,O | |
.,O | |
, | |
Two,O | |
of,O | |
these,O | |
occurred,O | |
on,O | |
the,O | |
same,O | |
allele,O | |
in,O | |
one,O | |
patient,O | |
and,O | |
segregated,O | |
with,O | |
the,O | |
disease,O | |
in,O | |
the,O | |
family,O | |
.,O | |
, | |
We,O | |
showed,O | |
that,O | |
some,O | |
of,O | |
the,O | |
glycine,O | |
substitutions,O | |
could,O | |
be,O | |
associated,O | |
with,O | |
the,O | |
lack,O | |
of,O | |
immunological,O | |
expression,O | |
of,O | |
the,O | |
alpha3(IV)-alpha5(IV,O | |
),O | |
collagen,O | |
chains,O | |
in,O | |
the,O | |
glomerular,O | |
basement,O | |
membrane,O | |
.,O | |
, | |
#20920665 | |
Identification,O | |
of,O | |
copy,O | |
number,O | |
variation,O | |
hotspots,O | |
in,O | |
human,O | |
populations,O | |
.,O | |
, | |
Copy,O | |
number,O | |
variants,O | |
(,O | |
CNVs,O | |
),O | |
in,O | |
the,O | |
human,O | |
genome,O | |
contribute,O | |
to,O | |
both,O | |
Mendelian,O | |
and,O | |
complex,O | |
traits,O | |
as,O | |
well,O | |
as,O | |
to,O | |
genomic,O | |
plasticity,O | |
in,O | |
evolution,O | |
.,O | |
, | |
The,O | |
investigation,O | |
of,O | |
mutational,O | |
rates,O | |
of,O | |
CNVs,O | |
is,O | |
critical,O | |
to,O | |
understanding,O | |
genomic,O | |
instability,O | |
and,O | |
the,O | |
etiology,O | |
of,O | |
the,O | |
copy,O | |
number,O | |
variation,O | |
(,O | |
CNV)-related,O | |
traits,O | |
.,O | |
, | |
However,O | |
,,O | |
the,O | |
evaluation,O | |
of,O | |
the,O | |
CNV,O | |
mutation,O | |
rate,O | |
at,O | |
the,O | |
genome,O | |
level,O | |
poses,O | |
an,O | |
insurmountable,O | |
practical,O | |
challenge,O | |
that,O | |
requires,O | |
large,O | |
samples,O | |
and,O | |
accurate,O | |
typing,O | |
.,O | |
, | |
In,O | |
this,O | |
study,O | |
,,O | |
we,O | |
show,O | |
that,O | |
an,O | |
approximate,O | |
estimation,O | |
of,O | |
the,O | |
CNV,O | |
mutation,O | |
rate,O | |
could,O | |
be,O | |
achieved,O | |
by,O | |
using,O | |
the,O | |
phylogeny,O | |
information,O | |
of,O | |
flanking,O | |
SNPs,O | |
.,O | |
, | |
This,O | |
allows,O | |
a,O | |
genome,O | |
-,O | |
wide,O | |
comparison,O | |
of,O | |
mutation,O | |
rates,O | |
between,O | |
CNVs,O | |
with,O | |
the,O | |
use,O | |
of,O | |
vast,O | |
,,O | |
readily,O | |
available,O | |
data,O | |
of,O | |
SNP,O | |
genotyping,O | |
.,O | |
, | |
A,O | |
total,O | |
of,O | |
4187,O | |
CNV,O | |
regions,O | |
(,O | |
CNVRs,O | |
),O | |
previously,O | |
identified,O | |
in,O | |
HapMap,O | |
populations,O | |
were,O | |
investigated,O | |
in,O | |
this,O | |
study,O | |
.,O | |
, | |
We,O | |
showed,O | |
that,O | |
the,O | |
mutation,O | |
rates,O | |
for,O | |
the,O | |
majority,O | |
of,O | |
these,O | |
CNVRs,O | |
are,O | |
at,O | |
the,O | |
order,O | |
of,O | |
10⁻⁵,O | |
per,O | |
generation,O | |
,,O | |
consistent,O | |
with,O | |
experimental,O | |
observations,O | |
at,O | |
individual,O | |
loci,O | |
.,O | |
, | |
Notably,O | |
,,O | |
the,O | |
mutation,O | |
rates,O | |
of,O | |
104,O | |
(,O | |
2.5,O | |
%,O | |
),O | |
CNVRs,O | |
were,O | |
estimated,O | |
at,O | |
the,O | |
order,O | |
of,O | |
10⁻³,O | |
per,O | |
generation,O | |
;,O | |
therefore,O | |
,,O | |
they,O | |
were,O | |
identified,O | |
as,O | |
potential,O | |
hotspots,O | |
.,O | |
, | |
Additional,O | |
analyses,O | |
revealed,O | |
that,O | |
genome,O | |
architecture,O | |
at,O | |
CNV,O | |
loci,O | |
has,O | |
a,O | |
potential,O | |
role,O | |
in,O | |
inciting,O | |
mutational,O | |
hotspots,O | |
in,O | |
the,O | |
human,O | |
genome,O | |
.,O | |
, | |
Interestingly,O | |
,,O | |
49,O | |
(,O | |
47,O | |
%,O | |
),O | |
CNV,O | |
hotspots,O | |
include,O | |
human,O | |
genes,O | |
,,O | |
some,O | |
of,O | |
which,O | |
are,O | |
known,O | |
to,O | |
be,O | |
functional,O | |
CNV,O | |
loci,O | |
(,O | |
e.g.,O | |
,,O | |
CNVs,O | |
of,O | |
C4,O | |
and,O | |
β,O | |
-,O | |
defensin,O | |
causing,O | |
autoimmune,O | |
diseases,O | |
and,O | |
CNVs,O | |
of,O | |
HYDIN,B-Gene | |
with,O | |
implication,O | |
in,O | |
control,O | |
of,O | |
cerebral,O | |
cortex,O | |
size,O | |
),O | |
,,O | |
implicating,O | |
the,O | |
important,O | |
role,O | |
of,O | |
CNV,O | |
in,O | |
human,O | |
health,O | |
and,O | |
evolution,O | |
,,O | |
especially,O | |
in,O | |
common,O | |
and,O | |
complex,O | |
diseases,O | |
.,O | |
, | |
#10631132 | |
Elevated,O | |
levels,O | |
of,O | |
FMR1,B-Gene | |
mRNA,O | |
in,O | |
carrier,O | |
males,O | |
:,O | |
a,O | |
new,O | |
mechanism,O | |
of,O | |
involvement,O | |
in,O | |
the,O | |
fragile,O | |
-,O | |
X,O | |
syndrome,O | |
.,O | |
, | |
Fragile,O | |
-,O | |
X,O | |
syndrome,O | |
is,O | |
a,O | |
trinucleotide,O | |
-,O | |
repeat,O | |
-,O | |
expansion,O | |
disorder,O | |
in,O | |
which,O | |
the,O | |
clinical,O | |
phenotype,O | |
is,O | |
believed,O | |
to,O | |
result,O | |
from,O | |
transcriptional,O | |
silencing,O | |
of,O | |
the,O | |
fragile,B-Gene | |
-,I-Gene | |
X,I-Gene | |
mental,I-Gene | |
retardation,I-Gene | |
1,I-Gene | |
(,B-Gene | |
FMR1,I-Gene | |
),I-Gene | |
gene,O | |
as,O | |
the,O | |
number,O | |
of,O | |
CGG,O | |
repeats,O | |
exceeds,O | |
approximately,O | |
200,O | |
.,O | |
, | |
For,O | |
premutation,O | |
alleles,O | |
(,O | |
approximately,O | |
55,O | |
-,O | |
200,O | |
repeats,O | |
),O | |
,,O | |
no,O | |
abnormalities,O | |
in,O | |
FMR1,B-Gene | |
-,I-Gene | |
gene,O | |
expression,O | |
have,O | |
been,O | |
described,O | |
,,O | |
despite,O | |
growing,O | |
evidence,O | |
of,O | |
clinical,O | |
involvement,O | |
in,O | |
premutation,O | |
carriers,O | |
.,O | |
, | |
To,O | |
address,O | |
this,O | |
(,O | |
apparent,O | |
),O | |
paradox,O | |
,,O | |
we,O | |
have,O | |
determined,O | |
,,O | |
for,O | |
16,O | |
carrier,O | |
males,O | |
(,O | |
55,O | |
-,O | |
192,O | |
repeats,O | |
),O | |
,,O | |
the,O | |
relative,O | |
levels,O | |
of,O | |
leukocyte,O | |
FMR1,O | |
mRNA,O | |
,,O | |
by,O | |
use,O | |
of,O | |
automated,O | |
fluorescence,O | |
-,O | |
detection,O | |
reverse,O | |
transcriptase,O | |
-,O | |
PCR,O | |
,,O | |
and,O | |
the,O | |
percent,O | |
of,O | |
lymphocytes,O | |
that,O | |
are,O | |
immunoreactive,O | |
for,O | |
FMR1,B-Gene | |
protein,O | |
(,B-Gene | |
FMRP,I-Gene | |
),I-Gene | |
.,O | |
, | |
For,O | |
some,O | |
alleles,O | |
with>100,O | |
repeats,O | |
,,O | |
there,O | |
was,O | |
a,O | |
reduction,O | |
in,O | |
the,O | |
number,O | |
of,O | |
FMRP,O | |
-,O | |
positive,O | |
cells,O | |
.,O | |
, | |
Unexpectedly,O | |
,,O | |
FMR1,B-Gene | |
mRNA,O | |
levels,O | |
were,O | |
elevated,O | |
at,O | |
least,O | |
fivefold,O | |
within,O | |
this,O | |
same,O | |
range,O | |
.,O | |
, | |
No,O | |
significant,O | |
increase,O | |
in,O | |
FMR1,B-Gene | |
mRNA,O | |
stability,O | |
was,O | |
observed,O | |
in,O | |
a,O | |
lymphoblastoid,O | |
cell,O | |
line,O | |
(,O | |
160,O | |
repeats,O | |
),O | |
derived,O | |
from,O | |
one,O | |
of,O | |
the,O | |
carrier,O | |
males,O | |
,,O | |
suggesting,O | |
that,O | |
the,O | |
increased,O | |
message,O | |
levels,O | |
are,O | |
due,O | |
to,O | |
an,O | |
increased,O | |
rate,O | |
of,O | |
transcription,O | |
.,O | |
, | |
Current,O | |
results,O | |
support,O | |
a,O | |
mechanism,O | |
of,O | |
involvement,O | |
in,O | |
premutation,O | |
carriers,O | |
,,O | |
in,O | |
which,O | |
reduced,O | |
translational,O | |
efficiency,O | |
is,O | |
at,O | |
least,O | |
partially,O | |
compensated,O | |
through,O | |
increased,O | |
transcriptional,O | |
activity,O | |
.,O | |
, | |
Thus,O | |
,,O | |
diminished,O | |
translational,O | |
efficiency,O | |
may,O | |
be,O | |
important,O | |
throughout,O | |
much,O | |
of,O | |
the,O | |
premutation,O | |
range,O | |
,,O | |
with,O | |
a,O | |
mechanistic,O | |
switch,O | |
occurring,O | |
in,O | |
the,O | |
full,O | |
-,O | |
mutation,O | |
range,O | |
as,O | |
the,O | |
FMR1,B-Gene | |
gene,O | |
is,O | |
silenced,O | |
.,O | |
, | |
#22387015 | |
Bent,O | |
bone,O | |
dysplasia,O | |
-,O | |
FGFR2,O | |
type,O | |
,,O | |
a,O | |
distinct,O | |
skeletal,O | |
disorder,O | |
,,O | |
has,O | |
deficient,O | |
canonical,O | |
FGF,O | |
signaling,O | |
.,O | |
, | |
Fibroblast,B-Gene | |
growth,I-Gene | |
factor,I-Gene | |
receptor,I-Gene | |
2,I-Gene | |
(,B-Gene | |
FGFR2,I-Gene | |
),I-Gene | |
is,O | |
a,O | |
crucial,O | |
regulator,O | |
of,O | |
bone,O | |
formation,O | |
during,O | |
embryonic,O | |
development,O | |
.,O | |
, | |
Both,O | |
gain,O | |
and,O | |
loss,O | |
-,O | |
of,O | |
-,O | |
function,O | |
studies,O | |
in,O | |
mice,O | |
have,O | |
shown,O | |
that,O | |
FGFR2,B-Gene | |
maintains,O | |
a,O | |
critical,O | |
balance,O | |
between,O | |
the,O | |
proliferation,O | |
and,O | |
differentiation,O | |
of,O | |
osteoprogenitor,O | |
cells,O | |
.,O | |
, | |
We,O | |
have,O | |
identified,O | |
de,O | |
novo,O | |
FGFR2,B-Gene | |
mutations,O | |
in,O | |
a,O | |
sporadically,O | |
occurring,O | |
perinatal,O | |
lethal,O | |
skeletal,O | |
dysplasia,O | |
characterized,O | |
by,O | |
poor,O | |
mineralization,O | |
of,O | |
the,O | |
calvarium,O | |
,,O | |
craniosynostosis,O | |
,,O | |
dysmorphic,O | |
facial,O | |
features,O | |
,,O | |
prenatal,O | |
teeth,O | |
,,O | |
hypoplastic,O | |
pubis,O | |
and,O | |
clavicles,O | |
,,O | |
osteopenia,O | |
,,O | |
and,O | |
bent,O | |
long,O | |
bones,O | |
.,O | |
, | |
Histological,O | |
analysis,O | |
of,O | |
the,O | |
long,O | |
bones,O | |
revealed,O | |
that,O | |
the,O | |
growth,O | |
plate,O | |
contained,O | |
smaller,O | |
hypertrophic,O | |
chondrocytes,O | |
and,O | |
a,O | |
thickened,O | |
hypercellular,O | |
periosteum,O | |
.,O | |
, | |
Four,O | |
unrelated,O | |
affected,O | |
individuals,O | |
were,O | |
found,O | |
to,O | |
be,O | |
heterozygous,O | |
for,O | |
missense,O | |
mutations,O | |
that,O | |
introduce,O | |
a,O | |
polar,O | |
amino,O | |
acid,O | |
into,O | |
the,O | |
hydrophobic,O | |
transmembrane,O | |
domain,O | |
of,O | |
FGFR2,B-Gene | |
.,I-Gene | |
, | |
Using,O | |
diseased,O | |
chondrocytes,O | |
and,O | |
a,O | |
cell,O | |
-,O | |
based,O | |
assay,O | |
,,O | |
we,O | |
determined,O | |
that,O | |
these,O | |
mutations,O | |
selectively,O | |
reduced,O | |
plasma,O | |
-,O | |
membrane,O | |
levels,O | |
of,O | |
FGFR2,B-Gene | |
and,O | |
markedly,O | |
diminished,O | |
the,O | |
receptor,O | |
's,O | |
responsiveness,O | |
to,O | |
extracellular,O | |
FGF,O | |
.,O | |
, | |
All,O | |
together,O | |
,,O | |
these,O | |
clinical,O | |
and,O | |
molecular,O | |
findings,O | |
are,O | |
separate,O | |
from,O | |
previously,O | |
characterized,O | |
FGFR2,B-Gene | |
disorders,O | |
and,O | |
represent,O | |
a,O | |
distinct,O | |
skeletal,O | |
dysplasia,O | |
.,O | |
, | |
#16211558 | |
Novel,O | |
mutations,O | |
of,O | |
the,O | |
PCSK9,B-Gene | |
gene,O | |
cause,O | |
variable,O | |
phenotype,O | |
of,O | |
autosomal,O | |
dominant,O | |
hypercholesterolemia,O | |
.,O | |
, | |
Autosomal,O | |
dominant,O | |
hypercholesterolemia,O | |
(,O | |
ADH,O | |
),O | |
is,O | |
a,O | |
frequent,O | |
(,O | |
1/500,O | |
),O | |
monogenic,O | |
inherited,O | |
disorder,O | |
characterized,O | |
by,O | |
isolated,O | |
elevation,O | |
of,O | |
LDL,O | |
leading,O | |
to,O | |
premature,O | |
cardiovascular,O | |
disease,O | |
.,O | |
, | |
ADH,O | |
is,O | |
known,O | |
to,O | |
result,O | |
from,O | |
mutations,O | |
at,O | |
two,O | |
main,O | |
loci,O | |
:,O | |
LDLR,O | |
(,O | |
encoding,O | |
the,O | |
low,O | |
density,O | |
lipoprotein,O | |
receptor,O | |
),O | |
,,O | |
and,O | |
APOB,O | |
(,O | |
encoding,O | |
apolipoprotein,O | |
B100,O | |
),O | |
,,O | |
its,O | |
natural,O | |
ligand,O | |
.,O | |
, | |
We,O | |
previously,O | |
demonstrated,O | |
that,O | |
ADH,O | |
is,O | |
also,O | |
caused,O | |
by,O | |
mutations,O | |
of,O | |
the,O | |
PCSK9,B-Gene | |
(,B-Gene | |
proprotein,I-Gene | |
convertase,I-Gene | |
subtilisin,I-Gene | |
/,I-Gene | |
kexin,I-Gene | |
type,I-Gene | |
9,I-Gene | |
),I-Gene | |
gene,O | |
that,O | |
encodes,O | |
Narc-1,B-Gene | |
(,B-Gene | |
neural,I-Gene | |
apoptosis,I-Gene | |
-,I-Gene | |
regulated,I-Gene | |
convertase,I-Gene | |
1,I-Gene | |
),I-Gene | |
.,O | |
, | |
However,O | |
,,O | |
the,O | |
role,O | |
of,O | |
this,O | |
novel,O | |
disease,O | |
locus,O | |
as,O | |
a,O | |
cause,O | |
of,O | |
hypercholesterolemia,O | |
remains,O | |
unclear,O | |
.,O | |
, | |
In,O | |
the,O | |
present,O | |
study,O | |
,,O | |
we,O | |
analysed,O | |
the,O | |
PCSK9,B-Gene | |
coding,O | |
region,O | |
and,O | |
intronic,O | |
junctions,O | |
in,O | |
130,O | |
adult,O | |
or,O | |
pediatric,O | |
patients,O | |
with,O | |
ADH,O | |
,,O | |
previously,O | |
found,O | |
as,O | |
being,O | |
non,O | |
LDLR,O | |
/,O | |
non,O | |
APOB,O | |
mutation,O | |
carriers,O | |
.,O | |
, | |
Four,O | |
novel,O | |
heterozygous,O | |
missense,O | |
variations,O | |
were,O | |
found,O | |
:,O | |
c.654A,B-SNP | |
>,I-SNP | |
T,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
R218S,I-SNP | |
),I-SNP | |
,,O | |
c.1070G,B-SNP | |
>,I-SNP | |
, | |
A,B-SNP | |
(,B-SNP | |
p.,I-SNP | |
R357H,I-SNP | |
),I-SNP | |
,,O | |
c.1405C,B-SNP | |
>,I-SNP | |
T,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
R469W,I-SNP | |
),I-SNP | |
,,O | |
and,O | |
c.1327G,B-SNP | |
>,I-SNP | |
, | |
A,B-SNP | |
(,B-SNP | |
p.,I-SNP | |
A443,I-SNP | |
T,I-SNP | |
),I-SNP | |
.,O | |
, | |
All,O | |
mutations,O | |
were,O | |
absent,O | |
in,O | |
340,O | |
normolipidemic,O | |
controls,O | |
.,O | |
, | |
Except,O | |
for,O | |
the,O | |
A443,B-SNP | |
T,I-SNP | |
,,I-SNP | |
all,O | |
mutations,O | |
are,O | |
nonconservative,O | |
and,O | |
modify,O | |
a,O | |
highly,O | |
conserved,O | |
residue,O | |
.,O | |
, | |
Segregation,O | |
with,O | |
hypercholesterolemia,O | |
is,O | |
incomplete,O | |
in,O | |
one,O | |
pedigree,O | |
.,O | |
, | |
Type,O | |
and,O | |
severity,O | |
of,O | |
hyperlipidemia,O | |
and,O | |
of,O | |
cardiovascular,O | |
disease,O | |
could,O | |
vary,O | |
among,O | |
subjects,O | |
from,O | |
the,O | |
same,O | |
family,O | |
.,O | |
, | |
Finally,O | |
,,O | |
the,O | |
proband,O | |
carrying,O | |
the,O | |
R357H,B-SNP | |
mutation,O | |
exhibited,O | |
very,O | |
high,O | |
plasma,O | |
cholesterol,O | |
during,O | |
pregnancy,O | |
,,O | |
whereas,O | |
the,O | |
proband,O | |
carrying,O | |
the,O | |
p.,B-SNP | |
R469W,I-SNP | |
mutation,O | |
exhibited,O | |
a,O | |
severe,O | |
phenotype,O | |
of,O | |
hypercholesterolemia,O | |
in,O | |
combination,O | |
with,O | |
a,O | |
LDLR,O | |
mutation,O | |
resulting,O | |
from,O | |
a,O | |
frameshift,B-SNP | |
at,I-SNP | |
residue,I-SNP | |
F382,I-SNP | |
(,B-SNP | |
1209delC,I-SNP | |
),I-SNP | |
.,O | |
, | |
These,O | |
observations,O | |
suggest,O | |
that,O | |
variations,O | |
in,O | |
PCSK9,B-Gene | |
are,O | |
a,O | |
rare,O | |
cause,O | |
of,O | |
non,O | |
LDLR,O | |
/,O | |
non,O | |
APOB,O | |
ADH,O | |
(,O | |
approximately,O | |
2.3,O | |
%,O | |
),O | |
and,O | |
that,O | |
additional,O | |
environmental,O | |
or,O | |
genetic,O | |
factors,O | |
may,O | |
contribute,O | |
to,O | |
the,O | |
phenotype,O | |
caused,O | |
by,O | |
PCSK9,B-Gene | |
missense,O | |
mutations,O | |
in,O | |
humans,O | |
.,O | |
, | |
#16080112 | |
Differential,O | |
X,O | |
reactivation,O | |
in,O | |
human,O | |
placental,O | |
cells,O | |
:,O | |
implications,O | |
for,O | |
reversal,O | |
of,O | |
X,O | |
inactivation,O | |
.,O | |
, | |
X,O | |
inactivation,O | |
--,O | |
the,O | |
mammalian,O | |
method,O | |
of,O | |
X,O | |
chromosome,O | |
dosage,O | |
compensation,O | |
--,O | |
is,O | |
extremely,O | |
stable,O | |
in,O | |
human,O | |
somatic,O | |
cells,O | |
;,O | |
only,O | |
fetal,O | |
germ,O | |
cells,O | |
have,O | |
a,O | |
developmental,O | |
program,O | |
to,O | |
reverse,O | |
the,O | |
process,O | |
.,O | |
, | |
The,O | |
human,O | |
placenta,O | |
,,O | |
at,O | |
term,O | |
,,O | |
differs,O | |
from,O | |
other,O | |
somatic,O | |
tissues,O | |
,,O | |
since,O | |
it,O | |
has,O | |
the,O | |
ability,O | |
to,O | |
reverse,O | |
the,O | |
X,O | |
-,O | |
inactivation,O | |
program,O | |
.,O | |
, | |
To,O | |
determine,O | |
whether,O | |
reversal,O | |
can,O | |
be,O | |
induced,O | |
at,O | |
other,O | |
stages,O | |
of,O | |
placental,O | |
development,O | |
,,O | |
we,O | |
examined,O | |
earlier,O | |
placental,O | |
specimens,O | |
using,O | |
a,O | |
cell,O | |
-,O | |
hybridization,O | |
assay,O | |
.,O | |
, | |
We,O | |
found,O | |
that,O | |
global,O | |
X,O | |
reactivation,O | |
is,O | |
also,O | |
inducible,O | |
in,O | |
villi,O | |
cells,O | |
from,O | |
first,O | |
-,O | |
trimester,O | |
spontaneous,O | |
abortions,O | |
but,O | |
not,O | |
from,O | |
first,O | |
-,O | |
trimester,O | |
elective,O | |
terminations,O | |
.,O | |
, | |
These,O | |
differences,O | |
in,O | |
inducibility,O | |
are,O | |
not,O | |
associated,O | |
with,O | |
detectable,O | |
variation,O | |
in,O | |
histone,O | |
H4,O | |
acetylation,O | |
,,O | |
DNA,O | |
methylation,O | |
,,O | |
or,O | |
XIST,O | |
expression,O | |
--,O | |
hallmarks,O | |
of,O | |
the,O | |
inactivation,O | |
process,O | |
--,O | |
so,O | |
other,O | |
factors,O | |
must,O | |
have,O | |
a,O | |
role,O | |
.,O | |
, | |
One,O | |
notable,O | |
feature,O | |
is,O | |
that,O | |
the,O | |
permissive,O | |
cells,O | |
,,O | |
unlike,O | |
nonpermissive,O | |
ones,O | |
,,O | |
have,O | |
ceased,O | |
to,O | |
proliferate,O | |
in,O | |
vivo,O | |
and,O | |
are,O | |
either,O | |
beginning,O | |
or,O | |
in,O | |
the,O | |
process,O | |
of,O | |
programmed,O | |
cell,O | |
death,O | |
.,O | |
, | |
Cessation,O | |
of,O | |
mitotic,O | |
proliferation,O | |
also,O | |
characterizes,O | |
oocytes,O | |
at,O | |
the,O | |
stage,O | |
at,O | |
which,O | |
they,O | |
undergo,O | |
X,O | |
reactivation,O | |
.,O | |
, | |
We,O | |
suggest,O | |
that,O | |
,,O | |
along,O | |
with,O | |
undermethylation,O | |
,,O | |
the,O | |
apoptotic,O | |
changes,O | |
accompanying,O | |
cessation,O | |
of,O | |
cell,O | |
proliferation,O | |
contribute,O | |
to,O | |
the,O | |
reversal,O | |
of,O | |
inactivation,O | |
,,O | |
not,O | |
only,O | |
in,O | |
placental,O | |
cells,O | |
,,O | |
but,O | |
also,O | |
in,O | |
oocytes,O | |
entering,O | |
meiosis,O | |
.,O | |
, | |
#9042931 | |
Detecting,O | |
disease,O | |
-,O | |
predisposing,O | |
variants,O | |
:,O | |
the,O | |
haplotype,O | |
method,O | |
.,O | |
, | |
For,O | |
many,O | |
HLA,O | |
-,O | |
associated,O | |
diseases,O | |
,,O | |
multiple,O | |
alleles--,O | |
and,O | |
,,O | |
in,O | |
some,O | |
cases,O | |
,,O | |
multiple,O | |
loci,O | |
--,O | |
have,O | |
been,O | |
suggested,O | |
as,O | |
the,O | |
causative,O | |
agents,O | |
.,O | |
, | |
The,O | |
haplotype,O | |
method,O | |
for,O | |
identifying,O | |
disease,O | |
-,O | |
predisposing,O | |
amino,O | |
acids,O | |
in,O | |
a,O | |
genetic,O | |
region,O | |
is,O | |
a,O | |
stratification,O | |
analysis,O | |
.,O | |
, | |
We,O | |
show,O | |
that,O | |
,,O | |
for,O | |
each,O | |
haplotype,O | |
combination,O | |
containing,O | |
all,O | |
the,O | |
amino,O | |
acid,O | |
sites,O | |
involved,O | |
in,O | |
the,O | |
disease,O | |
process,O | |
,,O | |
the,O | |
relative,O | |
frequencies,O | |
of,O | |
amino,O | |
acid,O | |
variants,O | |
at,O | |
sites,O | |
not,O | |
involved,O | |
in,O | |
disease,O | |
but,O | |
in,O | |
linkage,O | |
disequilibrium,O | |
with,O | |
the,O | |
disease,O | |
-,O | |
predisposing,O | |
sites,O | |
are,O | |
expected,O | |
to,O | |
be,O | |
the,O | |
same,O | |
in,O | |
patients,O | |
and,O | |
controls,O | |
.,O | |
, | |
The,O | |
haplotype,O | |
method,O | |
is,O | |
robust,O | |
to,O | |
mode,O | |
of,O | |
inheritance,O | |
and,O | |
penetrance,O | |
of,O | |
the,O | |
disease,O | |
and,O | |
can,O | |
be,O | |
used,O | |
to,O | |
determine,O | |
unequivocally,O | |
whether,O | |
all,O | |
amino,O | |
acid,O | |
sites,O | |
involved,O | |
in,O | |
the,O | |
disease,O | |
have,O | |
not,O | |
been,O | |
identified,O | |
.,O | |
, | |
Using,O | |
a,O | |
resampling,O | |
technique,O | |
,,O | |
we,O | |
developed,O | |
a,O | |
statistical,O | |
test,O | |
that,O | |
takes,O | |
account,O | |
of,O | |
the,O | |
nonindependence,O | |
of,O | |
the,O | |
sites,O | |
sampled,O | |
.,O | |
, | |
Further,O | |
,,O | |
when,O | |
multiple,O | |
sites,O | |
in,O | |
the,O | |
genetic,O | |
region,O | |
are,O | |
involved,O | |
in,O | |
disease,O | |
,,O | |
the,O | |
test,O | |
statistic,O | |
gives,O | |
a,O | |
closer,O | |
fit,O | |
to,O | |
the,O | |
null,O | |
expectation,O | |
when,O | |
some,O | |
--,O | |
compared,O | |
with,O | |
none,O | |
--,O | |
of,O | |
the,O | |
true,O | |
predisposing,O | |
factors,O | |
are,O | |
included,O | |
in,O | |
the,O | |
haplotype,O | |
analysis,O | |
.,O | |
, | |
Although,O | |
the,O | |
haplotype,O | |
method,O | |
can,O | |
not,O | |
distinguish,O | |
between,O | |
very,O | |
highly,O | |
correlated,O | |
sites,O | |
in,O | |
one,O | |
population,O | |
,,O | |
ethnic,O | |
comparisons,O | |
may,O | |
help,O | |
identify,O | |
the,O | |
true,O | |
predisposing,O | |
factors,O | |
.,O | |
, | |
The,O | |
haplotype,O | |
method,O | |
was,O | |
applied,O | |
to,O | |
insulin,O | |
-,O | |
dependent,O | |
diabetes,O | |
mellitus,O | |
(,O | |
IDDM,O | |
),O | |
HLA,O | |
class,O | |
II,O | |
DQA1,O | |
-,O | |
DQB1,O | |
data,O | |
from,O | |
Caucasian,O | |
,,O | |
African,O | |
,,O | |
and,O | |
Japanese,O | |
populations,O | |
.,O | |
, | |
Our,O | |
results,O | |
indicate,O | |
that,O | |
the,O | |
combination,O | |
DQA1#52,B-Gene | |
(,O | |
Arg,O | |
predisposing,O | |
),O | |
DQB1#57,B-Gene | |
(,O | |
Asp,O | |
protective,O | |
),O | |
,,O | |
which,O | |
has,O | |
been,O | |
proposed,O | |
as,O | |
an,O | |
important,O | |
IDDM,O | |
agent,O | |
,,O | |
does,O | |
not,O | |
include,O | |
all,O | |
the,O | |
predisposing,O | |
elements,O | |
.,O | |
, | |
With,O | |
rheumatoid,O | |
arthritis,O | |
HLA,O | |
class,O | |
II,O | |
DRB1,B-Gene | |
data,O | |
,,O | |
the,O | |
results,O | |
were,O | |
consistent,O | |
with,O | |
the,O | |
shared,O | |
-,O | |
epitope,O | |
hypothesis,O | |
.,O | |
, | |
#21035103 | |
Fibrochondrogenesis,O | |
results,O | |
from,O | |
mutations,O | |
in,O | |
the,O | |
COL11A1,B-Gene | |
type,O | |
XI,O | |
collagen,O | |
gene,O | |
.,O | |
, | |
Fibrochondrogenesis,O | |
is,O | |
a,O | |
severe,O | |
,,O | |
autosomal,O | |
-,O | |
recessive,O | |
,,O | |
short,O | |
-,O | |
limbed,O | |
skeletal,O | |
dysplasia,O | |
.,O | |
, | |
In,O | |
a,O | |
single,O | |
case,O | |
of,O | |
fibrochondrogenesis,O | |
,,O | |
whole,O | |
-,O | |
genome,O | |
SNP,O | |
genotyping,O | |
identified,O | |
unknown,O | |
ancestral,O | |
consanguinity,O | |
by,O | |
detecting,O | |
three,O | |
autozygous,O | |
regions,O | |
.,O | |
, | |
Because,O | |
of,O | |
the,O | |
predominantly,O | |
skeletal,O | |
nature,O | |
of,O | |
the,O | |
phenotype,O | |
,,O | |
the,O | |
389,O | |
genes,O | |
localized,O | |
to,O | |
the,O | |
autozygous,O | |
intervals,O | |
were,O | |
prioritized,O | |
for,O | |
mutation,O | |
analysis,O | |
by,O | |
correlation,O | |
of,O | |
their,O | |
expression,O | |
with,O | |
known,O | |
cartilage,O | |
-,O | |
selective,O | |
genes,O | |
via,O | |
the,O | |
UCLA,O | |
Gene,O | |
Expression,O | |
Tool,O | |
,,O | |
UGET,O | |
.,O | |
, | |
The,O | |
gene,O | |
encoding,O | |
the,O | |
α1,O | |
chain,O | |
of,O | |
type,O | |
XI,O | |
collagen,O | |
(,B-Gene | |
COL11A1,I-Gene | |
),I-Gene | |
was,O | |
the,O | |
only,O | |
cartilage,O | |
-,O | |
selective,O | |
gene,O | |
among,O | |
the,O | |
three,O | |
candidate,O | |
intervals,O | |
.,O | |
, | |
Sequence,O | |
analysis,O | |
of,O | |
COL11A1,B-Gene | |
in,O | |
two,O | |
genetically,O | |
independent,O | |
fibrochondrogenesis,O | |
cases,O | |
demonstrated,O | |
that,O | |
each,O | |
was,O | |
a,O | |
compound,O | |
heterozygote,O | |
for,O | |
a,O | |
loss,O | |
-,O | |
of,O | |
-,O | |
function,O | |
mutation,O | |
on,O | |
one,O | |
allele,O | |
and,O | |
a,O | |
mutation,O | |
predicting,O | |
substitution,O | |
for,O | |
a,O | |
conserved,O | |
triple,O | |
-,O | |
helical,O | |
glycine,O | |
residue,O | |
on,O | |
the,O | |
other,O | |
.,O | |
, | |
The,O | |
parents,O | |
who,O | |
were,O | |
carriers,O | |
of,O | |
missense,O | |
mutations,O | |
had,O | |
myopia,O | |
.,O | |
, | |
Early,O | |
-,O | |
onset,O | |
hearing,O | |
loss,O | |
was,O | |
noted,O | |
in,O | |
both,O | |
parents,O | |
who,O | |
carried,O | |
a,O | |
loss,O | |
-,O | |
of,O | |
-,O | |
function,O | |
allele,O | |
,,O | |
suggesting,O | |
COL11A1,B-Gene | |
as,O | |
a,O | |
locus,O | |
for,O | |
mild,O | |
,,O | |
dominantly,O | |
inherited,O | |
hearing,O | |
loss,O | |
.,O | |
, | |
These,O | |
findings,O | |
identify,O | |
COL11A1,B-Gene | |
as,O | |
a,O | |
locus,O | |
for,O | |
fibrochondrogenesis,O | |
and,O | |
indicate,O | |
that,O | |
there,O | |
might,O | |
be,O | |
phenotypic,O | |
manifestations,O | |
among,O | |
carriers,O | |
.,O | |
, | |
#11524732 | |
High,O | |
incidence,O | |
of,O | |
N,B-Gene | |
and,O | |
K,B-Gene | |
-,I-Gene | |
Ras,I-Gene | |
activating,O | |
mutations,O | |
in,O | |
multiple,O | |
myeloma,O | |
and,O | |
primary,O | |
plasma,O | |
cell,O | |
leukemia,O | |
at,O | |
diagnosis,O | |
.,O | |
, | |
Using,O | |
allele,O | |
-,O | |
specific,O | |
amplification,O | |
method,O | |
(,O | |
ARMS,O | |
),O | |
,,O | |
a,O | |
highly,O | |
sensitive,O | |
one,O | |
-,O | |
stage,O | |
allele,O | |
-,O | |
specific,O | |
PCR,O | |
,,O | |
we,O | |
have,O | |
evaluated,O | |
the,O | |
incidence,O | |
of,O | |
NRAS,O | |
and,O | |
KRAS2,O | |
activating,O | |
mutations,O | |
(,O | |
codons,O | |
12,O | |
,,O | |
13,O | |
,,O | |
and,O | |
61,O | |
),O | |
in,O | |
62,O | |
patients,O | |
with,O | |
either,O | |
monoclonal,O | |
gammopathy,O | |
of,O | |
undetermined,O | |
significance,O | |
(,O | |
MGUS,O | |
),O | |
or,O | |
multiple,O | |
myeloma,O | |
(,O | |
MM,O | |
),O | |
,,O | |
primary,O | |
plasma,O | |
-,O | |
cell,O | |
leukemia,O | |
(,O | |
P,O | |
-,O | |
PCL,O | |
),O | |
,,O | |
and,O | |
also,O | |
in,O | |
human,O | |
myeloma,O | |
cell,O | |
lines,O | |
(,O | |
HMCL,O | |
),O | |
.,O | |
, | |
NRAS,B-Gene | |
and/or,O | |
KRAS2,B-Gene | |
mutations,O | |
were,O | |
found,O | |
in,O | |
54.5,O | |
%,O | |
of,O | |
MM,O | |
at,O | |
diagnosis,O | |
(,O | |
but,O | |
in,O | |
81,O | |
%,O | |
at,O | |
the,O | |
time,O | |
of,O | |
relapse,O | |
),O | |
,,O | |
in,O | |
50,O | |
%,O | |
of,O | |
P,O | |
-,O | |
PCL,O | |
,,O | |
and,O | |
in,O | |
50,O | |
%,O | |
of,O | |
16,O | |
HMCL,O | |
.,O | |
, | |
In,O | |
contrast,O | |
,,O | |
the,O | |
occurrence,O | |
of,O | |
such,O | |
mutations,O | |
was,O | |
very,O | |
low,O | |
in,O | |
MGUS,O | |
and,O | |
indolent,O | |
MM,O | |
(,O | |
12.50,O | |
%,O | |
),O | |
.,O | |
, | |
Of,O | |
note,O | |
,,O | |
KRAS2,B-Gene | |
mutations,O | |
were,O | |
always,O | |
more,O | |
frequent,O | |
than,O | |
NRAS,O | |
.,O | |
, | |
The,O | |
validity,O | |
of,O | |
the,O | |
technique,O | |
was,O | |
assessed,O | |
by,O | |
direct,O | |
sequencing,O | |
of,O | |
cell,O | |
lines,O | |
and,O | |
of,O | |
some,O | |
patients,O | |
.,O | |
, | |
Multiple,O | |
mutations,O | |
found,O | |
in,O | |
two,O | |
patients,O | |
were,O | |
confirmed,O | |
by,O | |
subcloning,O | |
exon,O | |
PCR,O | |
amplification,O | |
products,O | |
,,O | |
testing,O | |
clones,O | |
with,O | |
our,O | |
method,O | |
,,O | |
and,O | |
sequencing,O | |
them,O | |
.,O | |
, | |
Thus,O | |
,,O | |
these,O | |
early,O | |
mutations,O | |
could,O | |
play,O | |
a,O | |
major,O | |
role,O | |
in,O | |
the,O | |
oncogenesis,O | |
of,O | |
MM,O | |
and,O | |
P,O | |
-,O | |
PCL,O | |
.,O | |
, | |
#7902670 | |
Homozygotes,O | |
for,O | |
the,O | |
autosomal,O | |
dominant,O | |
neoplasia,O | |
syndrome,O | |
(,B-Gene | |
MEN1,I-Gene | |
),I-Gene | |
.,O | |
, | |
Families,O | |
in,O | |
which,O | |
both,O | |
parents,O | |
are,O | |
heterozygotes,O | |
for,O | |
the,O | |
same,O | |
autosomal,O | |
dominant,O | |
neoplasia,O | |
syndrome,O | |
are,O | |
extremely,O | |
unusual,O | |
.,O | |
, | |
Recently,O | |
,,O | |
we,O | |
had,O | |
the,O | |
unique,O | |
opportunity,O | |
to,O | |
evaluate,O | |
three,O | |
symptomatic,O | |
siblings,O | |
from,O | |
the,O | |
union,O | |
between,O | |
two,O | |
unrelated,O | |
individuals,O | |
affected,O | |
by,O | |
multiple,O | |
endocrine,O | |
neoplasia,O | |
type,O | |
1,O | |
(,B-Gene | |
MEN1,I-Gene | |
),I-Gene | |
.,O | |
, | |
When,O | |
the,O | |
three,O | |
siblings,O | |
and,O | |
their,O | |
parents,O | |
and,O | |
relatives,O | |
were,O | |
genotyped,O | |
for,O | |
12,O | |
markers,O | |
tightly,O | |
linked,O | |
to,O | |
the,O | |
MEN1,B-Gene | |
locus,O | |
,,O | |
at,O | |
11q13,O | |
,,O | |
two,O | |
of,O | |
the,O | |
siblings,O | |
were,O | |
found,O | |
to,O | |
be,O | |
homozygotes,O | |
,,O | |
and,O | |
one,O | |
a,O | |
heterozygote,O | |
,,O | |
for,O | |
MEN1,B-Gene | |
.,I-Gene | |
, | |
With,O | |
regard,O | |
to,O | |
the,O | |
MEN1,B-Gene | |
syndrome,O | |
,,O | |
no,O | |
phenotypic,O | |
differences,O | |
were,O | |
observed,O | |
between,O | |
the,O | |
two,O | |
homozygotes,O | |
and,O | |
the,O | |
heterozygotes,O | |
.,O | |
, | |
However,O | |
,,O | |
the,O | |
two,O | |
homozygotes,O | |
showed,O | |
unexplained,O | |
infertility,O | |
,,O | |
which,O | |
was,O | |
not,O | |
the,O | |
case,O | |
for,O | |
any,O | |
of,O | |
the,O | |
heterozygotes,O | |
.,O | |
, | |
Thus,O | |
,,O | |
MEN1,B-Gene | |
appears,O | |
to,O | |
be,O | |
a,O | |
disease,O | |
with,O | |
complete,O | |
dominance,O | |
,,O | |
and,O | |
the,O | |
presence,O | |
of,O | |
two,O | |
MEN1,B-Gene | |
alleles,O | |
with,O | |
mutations,O | |
of,O | |
the,O | |
type,O | |
that,O | |
occur,O | |
constitutionally,O | |
may,O | |
be,O | |
insufficient,O | |
for,O | |
tumor,O | |
development,O | |
.,O | |
, | |
#11254449 | |
HPC2,B-Gene | |
variants,O | |
and,O | |
screen,O | |
-,O | |
detected,O | |
prostate,O | |
cancer,O | |
.,O | |
, | |
Two,O | |
studies,O | |
have,O | |
reported,O | |
significant,O | |
associations,O | |
between,O | |
susceptibility,O | |
to,O | |
prostate,O | |
cancer,O | |
and,O | |
two,O | |
common,O | |
missense,O | |
variants,O | |
of,O | |
the,O | |
HPC2,B-Gene | |
/,B-Gene | |
ELAC2,I-Gene | |
gene,O | |
,,O | |
with,O | |
estimated,O | |
relative,O | |
risks,O | |
in,O | |
the,O | |
range,O | |
of,O | |
two-,O | |
to,O | |
threefold,O | |
.,O | |
, | |
We,O | |
investigated,O | |
whether,O | |
these,O | |
polymorphisms,O | |
could,O | |
be,O | |
informative,O | |
in,O | |
the,O | |
prediction,O | |
of,O | |
the,O | |
presence,O | |
of,O | |
prostate,O | |
cancer,O | |
in,O | |
men,O | |
undergoing,O | |
prostatic,O | |
biopsy,O | |
for,O | |
the,O | |
evaluation,O | |
of,O | |
an,O | |
elevated,O | |
serum,O | |
-,O | |
PSA,O | |
level,O | |
(,O | |
>,O | |
or,O | |
=,O | |
4.0,O | |
ng,O | |
/,O | |
ml,O | |
),O | |
.,O | |
, | |
We,O | |
genotyped,O | |
944,O | |
men,O | |
who,O | |
underwent,O | |
a,O | |
prostate,O | |
biopsy,O | |
at,O | |
our,O | |
institution,O | |
,,O | |
as,O | |
well,O | |
as,O | |
a,O | |
control,O | |
population,O | |
of,O | |
922,O | |
healthy,O | |
,,O | |
unselected,O | |
women,O | |
from,O | |
the,O | |
same,O | |
population,O | |
.,O | |
, | |
The,O | |
prevalence,O | |
of,O | |
the,O | |
HPC2,B-Gene | |
Ala541Thr,B-SNP | |
allele,O | |
was,O | |
similar,O | |
in,O | |
men,O | |
with,O | |
prostate,O | |
cancer,O | |
(,O | |
6.3,O | |
%,O | |
),O | |
,,O | |
men,O | |
with,O | |
other,O | |
prostatic,O | |
conditions,O | |
(,O | |
6.8,O | |
%,O | |
),O | |
,,O | |
and,O | |
healthy,O | |
women,O | |
(,O | |
6.3,O | |
%,O | |
),O | |
(,O | |
P,O | |
=,O | |
.83,O | |
),O | |
.,O | |
, | |
We,O | |
conclude,O | |
that,O | |
HPC2,B-Gene | |
genotyping,O | |
is,O | |
unlikely,O | |
to,O | |
be,O | |
a,O | |
useful,O | |
adjunct,O | |
to,O | |
PSA,O | |
in,O | |
the,O | |
prediction,O | |
of,O | |
the,O | |
presence,O | |
of,O | |
biopsy,O | |
-,O | |
detected,O | |
prostate,O | |
cancer,O | |
in,O | |
asymptomatic,O | |
men,O | |
.,O | |
, | |
#10090486 | |
Beta,O | |
-,O | |
thalassemia,O | |
in,O | |
the,O | |
German,O | |
population,O | |
:,O | |
mediterranean,O | |
,,O | |
Asian,O | |
and,O | |
novel,O | |
mutations,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
brief,O | |
no.228,O | |
.,O | |
, | |
Online,O | |
.,O | |
, | |
The,O | |
beta,O | |
-,O | |
thalassemia,O | |
mutations,O | |
of,O | |
13,O | |
unrelated,O | |
heterozygous,O | |
Germans,O | |
who,O | |
remained,O | |
unidentified,O | |
in,O | |
a,O | |
previous,O | |
study,O | |
of,O | |
40,O | |
subjects,O | |
were,O | |
investigated,O | |
at,O | |
the,O | |
DNA,O | |
level,O | |
.,O | |
, | |
Two,O | |
Mediterranean,O | |
,,O | |
one,O | |
Asian,O | |
and,O | |
three,O | |
novel,O | |
mutations,O | |
(,B-SNP | |
CD6,I-SNP | |
-G,I-SNP | |
,,I-SNP | |
CDs,B-SNP | |
108,I-SNP | |
/112,I-SNP | |
-,I-SNP | |
12nt,I-SNP | |
,,I-SNP | |
CDs,B-SNP | |
130/131,I-SNP | |
+,I-SNP | |
GCCT,I-SNP | |
),I-SNP | |
were,O | |
identified,O | |
.,O | |
, | |
Altogether,O | |
,,O | |
in,O | |
30,O | |
of,O | |
the,O | |
35,O | |
subjects,O | |
(,O | |
86,O | |
%,O | |
),O | |
in,O | |
which,O | |
a,O | |
mutation,O | |
in,O | |
the,O | |
beta,B-Gene | |
-,I-Gene | |
globin,I-Gene | |
gene,O | |
was,O | |
identified,O | |
,,O | |
the,O | |
mutation,O | |
was,O | |
of,O | |
Mediterranean,O | |
origin,O | |
.,O | |
, | |
The,O | |
geographical,O | |
distribution,O | |
suggests,O | |
recent,O | |
migration,O | |
from,O | |
the,O | |
Mediterranean,O | |
region,O | |
as,O | |
cause,O | |
of,O | |
the,O | |
high,O | |
proportion,O | |
of,O | |
frequent,O | |
Mediterranean,O | |
beta,O | |
-,O | |
thalassemia,O | |
mutations,O | |
in,O | |
the,O | |
German,O | |
population,O | |
.,O | |
, | |
Our,O | |
results,O | |
support,O | |
the,O | |
notion,O | |
that,O | |
the,O | |
majority,O | |
of,O | |
beta,O | |
-,O | |
thalassemia,O | |
genes,O | |
in,O | |
the,O | |
western,O | |
and,O | |
central,O | |
European,O | |
population,O | |
are,O | |
of,O | |
Mediterranean,O | |
origin,O | |
.,O | |
, | |
#12596792 | |
Simulation,O | |
-,O | |
based,O | |
P,O | |
values,O | |
:,O | |
response,O | |
to,O | |
North,O | |
et,O | |
al,O | |
.,O | |
, | |
#8387722 | |
A,O | |
base,O | |
substitution,O | |
in,O | |
the,O | |
promoter,O | |
associated,O | |
with,O | |
the,O | |
human,O | |
haptoglobin,B-Gene | |
2,I-Gene | |
-,I-Gene | |
1,I-Gene | |
modified,O | |
phenotype,O | |
decreases,O | |
transcriptional,O | |
activity,O | |
and,O | |
responsiveness,O | |
to,O | |
interleukin-6,B-Gene | |
in,O | |
human,O | |
hepatoma,O | |
cells,O | |
.,O | |
, | |
An,O | |
A,B-SNP | |
-,I-SNP | |
to,I-SNP | |
-,I-SNP | |
C,I-SNP | |
base,I-SNP | |
substitution,I-SNP | |
at,I-SNP | |
nucleotide,I-SNP | |
position,I-SNP | |
-61,I-SNP | |
in,O | |
the,O | |
promoter,O | |
region,O | |
of,O | |
the,O | |
human,O | |
haptoglobin,B-Gene | |
gene,O | |
(,B-Gene | |
Hp,I-Gene | |
),I-Gene | |
has,O | |
been,O | |
shown,O | |
to,O | |
be,O | |
strongly,O | |
associated,O | |
with,O | |
the,O | |
haptoglobin,B-Gene | |
2,I-Gene | |
-,I-Gene | |
1,I-Gene | |
modified,O | |
(,O | |
Hp2,O | |
-,O | |
1mod,O | |
),O | |
phenotype,O | |
.,O | |
, | |
In,O | |
order,O | |
to,O | |
investigate,O | |
whether,O | |
this,O | |
base,O | |
substitution,O | |
is,O | |
the,O | |
cause,O | |
of,O | |
reduced,O | |
expression,O | |
of,O | |
the,O | |
Hp2,B-Gene | |
allele,O | |
relative,O | |
to,O | |
the,O | |
Hp1,B-Gene | |
allele,O | |
in,O | |
individuals,O | |
with,O | |
the,O | |
Hp2,O | |
-,O | |
1mod,O | |
phenotype,O | |
,,O | |
we,O | |
used,O | |
the,O | |
chloramphenicol,O | |
acetyl,O | |
transferase,O | |
(,O | |
CAT,O | |
),O | |
expression,O | |
system,O | |
to,O | |
evaluate,O | |
promoter,O | |
function,O | |
.,O | |
, | |
In,O | |
HepG2,O | |
cells,O | |
,,O | |
which,O | |
normally,O | |
express,O | |
their,O | |
endogenous,O | |
haptoglobin,O | |
genes,O | |
,,O | |
CAT,O | |
plasmid,O | |
constructs,O | |
with,O | |
the,O | |
-61C,O | |
base,O | |
change,O | |
in,O | |
the,O | |
promoter,O | |
had,O | |
about,O | |
10,O | |
-,O | |
fold,O | |
-,O | |
lower,O | |
transcriptional,O | |
activity,O | |
after,O | |
transfection,O | |
than,O | |
did,O | |
the,O | |
Hp,O | |
control,O | |
construct,O | |
.,O | |
, | |
The,O | |
-61C,O | |
substitution,O | |
also,O | |
rendered,O | |
the,O | |
construct,O | |
unresponsive,O | |
to,O | |
treatment,O | |
by,O | |
interleukin-6,O | |
after,O | |
transfection,O | |
into,O | |
Hep3B2,O | |
cells,O | |
,,O | |
which,O | |
normally,O | |
do,O | |
not,O | |
express,O | |
haptoglobin,O | |
but,O | |
do,O | |
so,O | |
in,O | |
response,O | |
to,O | |
stimulation,O | |
by,O | |
acute,O | |
-,O | |
phase,O | |
reactants,O | |
.,O | |
, | |
In,O | |
addition,O | |
,,O | |
two,O | |
base,O | |
substitutions,O | |
,,O | |
T,B-SNP | |
to,I-SNP | |
A,I-SNP | |
and,I-SNP | |
A,I-SNP | |
to,I-SNP | |
G,I-SNP | |
,,I-SNP | |
at,I-SNP | |
positions,I-SNP | |
-104,I-SNP | |
and,I-SNP | |
-55,I-SNP | |
G,I-SNP | |
,,I-SNP | |
respectively,I-SNP | |
,,I-SNP | |
in,O | |
the,O | |
promoter,O | |
region,O | |
of,O | |
the,O | |
Hp1,B-Gene | |
allele,O | |
,,O | |
are,O | |
also,O | |
associated,O | |
with,O | |
the,O | |
Hp2,O | |
-,O | |
1mod,O | |
phenotype,O | |
.,O | |
, | |
CAT,O | |
constructs,O | |
with,O | |
both,O | |
substitutions,O | |
(,B-SNP | |
-104A-55,I-SNP | |
G,I-SNP | |
),I-SNP | |
and,O | |
with,O | |
one,O | |
substitution,O | |
(,O | |
-55,O | |
G,O | |
),O | |
showed,O | |
activity,O | |
similar,O | |
to,O | |
that,O | |
in,O | |
the,O | |
Hp,O | |
control,O | |
when,O | |
transfected,O | |
into,O | |
both,O | |
HepG2,O | |
and,O | |
Hep3B2,O | |
cells,O | |
,,O | |
although,O | |
interleukin-6,B-Gene | |
induction,O | |
was,O | |
less,O | |
than,O | |
with,O | |
the,O | |
Hp,O | |
control,O | |
construct,O | |
.,O | |
, | |
These,O | |
results,O | |
further,O | |
support,O | |
the,O | |
hypothesis,O | |
that,O | |
the,O | |
Hp2,O | |
-,O | |
1mod,O | |
phenotype,O | |
results,O | |
,,O | |
in,O | |
part,O | |
,,O | |
from,O | |
the,O | |
-61C,O | |
mutation,O | |
in,O | |
the,O | |
promoter,O | |
region,O | |
of,O | |
the,O | |
Hp2,B-Gene | |
gene,O | |
.,O | |
, | |
#7847368 | |
Response,O | |
to,O | |
treatment,O | |
in,O | |
hereditary,O | |
metabolic,O | |
disease,O | |
:,O | |
1993,O | |
survey,O | |
and,O | |
10,O | |
-,O | |
year,O | |
comparison,O | |
.,O | |
, | |
Knowledge,O | |
about,O | |
cause,O | |
,,O | |
pathogenesis,O | |
,,O | |
and,O | |
manifestations,O | |
of,O | |
hereditary,O | |
metabolic,O | |
diseases,O | |
puts,O | |
them,O | |
among,O | |
the,O | |
best,O | |
known,O | |
of,O | |
all,O | |
human,O | |
diseases,O | |
.,O | |
, | |
On,O | |
the,O | |
other,O | |
hand,O | |
,,O | |
outcomes,O | |
of,O | |
treatment,O | |
are,O | |
cause,O | |
for,O | |
uncertainty,O | |
and,O | |
concern,O | |
.,O | |
, | |
In,O | |
1985,O | |
,,O | |
Hayes,O | |
et,O | |
al,O | |
.,O | |
analyzed,O | |
efficacy,O | |
of,O | |
treatment,O | |
up,O | |
to,O | |
1983,O | |
in,O | |
65,O | |
of,O | |
these,O | |
diseases,O | |
selected,O | |
randomly,O | |
from,O | |
the,O | |
McKusick,O | |
catalogs,O | |
.,O | |
, | |
Disease,O | |
scores,O | |
were,O | |
calculated,O | |
for,O | |
seven,O | |
parameters,O | |
:,O | |
longevity,O | |
;,O | |
reproductive,O | |
capability,O | |
;,O | |
somatic,O | |
and,O | |
cognitive,O | |
development,O | |
;,O | |
and,O | |
handicaps,O | |
affecting,O | |
schooling,O | |
,,O | |
work,O | |
,,O | |
and,O | |
cosmetic,O | |
appearance,O | |
.,O | |
, | |
Scores,O | |
of,O | |
the,O | |
untreated,O | |
and,O | |
treated,O | |
phenotypes,O | |
were,O | |
then,O | |
compared,O | |
.,O | |
, | |
We,O | |
have,O | |
now,O | |
measured,O | |
progress,O | |
over,O | |
the,O | |
past,O | |
decade,O | |
by,O | |
calculating,O | |
scores,O | |
on,O | |
the,O | |
same,O | |
65,O | |
diseases,O | |
from,O | |
data,O | |
in,O | |
several,O | |
hundred,O | |
new,O | |
reports,O | |
published,O | |
since,O | |
1983,O | |
.,O | |
, | |
All,O | |
seven,O | |
parameters,O | |
in,O | |
the,O | |
1993,O | |
survey,O | |
reflect,O | |
improved,O | |
efficacy,O | |
of,O | |
treatment,O | |
in,O | |
the,O | |
10,O | |
-,O | |
year,O | |
interval,O | |
.,O | |
, | |
However,O | |
,,O | |
the,O | |
percent,O | |
of,O | |
diseases,O | |
for,O | |
which,O | |
all,O | |
manifestations,O | |
of,O | |
the,O | |
disease,O | |
were,O | |
removed,O | |
by,O | |
treatment,O | |
has,O | |
not,O | |
changed,O | |
(,O | |
12,O | |
%,O | |
in,O | |
1983,O | |
;,O | |
12,O | |
%,O | |
in,O | |
1993,O | |
),O | |
.,O | |
, | |
The,O | |
group,O | |
in,O | |
which,O | |
manifestations,O | |
were,O | |
untouched,O | |
by,O | |
treatment,O | |
has,O | |
become,O | |
smaller,O | |
(,O | |
48,O | |
%,O | |
in,O | |
1983,O | |
;,O | |
31,O | |
%,O | |
in,O | |
1993,O | |
),O | |
,,O | |
and,O | |
the,O | |
group,O | |
partially,O | |
ameliorated,O | |
by,O | |
treatment,O | |
had,O | |
increased,O | |
reciprocally,O | |
(,O | |
40,O | |
%,O | |
in,O | |
1983,O | |
;,O | |
57,O | |
%,O | |
in,O | |
1993,O | |
),O | |
.,O | |
, | |
Progress,O | |
in,O | |
the,O | |
treatment,O | |
of,O | |
hereditary,O | |
metabolic,O | |
disease,O | |
is,O | |
thus,O | |
better,O | |
than,O | |
it,O | |
was,O | |
,,O | |
but,O | |
it,O | |
is,O | |
still,O | |
only,O | |
a,O | |
partial,O | |
success,O | |
.,O | |
, | |
The,O | |
advances,O | |
are,O | |
attributable,O | |
to,O | |
greater,O | |
success,O | |
with,O | |
organ,O | |
and,O | |
tissue,O | |
transplantation,O | |
,,O | |
better,O | |
pharmacotherapy,O | |
,,O | |
and,O | |
better,O | |
support,O | |
systems,O | |
.,O | |
, | |
Restoration,O | |
of,O | |
normal,O | |
homeostasis,O | |
,,O | |
the,O | |
key,O | |
to,O | |
successful,O | |
treatment,O | |
,,O | |
remains,O | |
an,O | |
elusive,O | |
challenge,O | |
and,O | |
is,O | |
a,O | |
logical,O | |
,,O | |
major,O | |
focus,O | |
for,O | |
research,O | |
in,O | |
human,O | |
genetics,O | |
.,O | |
, | |
#18950739 | |
The,O | |
Human,O | |
Phenotype,O | |
Ontology,O | |
:,O | |
a,O | |
tool,O | |
for,O | |
annotating,O | |
and,O | |
analyzing,O | |
human,O | |
hereditary,O | |
disease,O | |
.,O | |
, | |
There,O | |
are,O | |
many,O | |
thousands,O | |
of,O | |
hereditary,O | |
diseases,O | |
in,O | |
humans,O | |
,,O | |
each,O | |
of,O | |
which,O | |
has,O | |
a,O | |
specific,O | |
combination,O | |
of,O | |
phenotypic,O | |
features,O | |
,,O | |
but,O | |
computational,O | |
analysis,O | |
of,O | |
phenotypic,O | |
data,O | |
has,O | |
been,O | |
hampered,O | |
by,O | |
lack,O | |
of,O | |
adequate,O | |
computational,O | |
data,O | |
structures,O | |
.,O | |
, | |
Therefore,O | |
,,O | |
we,O | |
have,O | |
developed,O | |
a,O | |
Human,O | |
Phenotype,O | |
Ontology,O | |
(,O | |
HPO,O | |
),O | |
with,O | |
over,O | |
8000,O | |
terms,O | |
representing,O | |
individual,O | |
phenotypic,O | |
anomalies,O | |
and,O | |
have,O | |
annotated,O | |
all,O | |
clinical,O | |
entries,O | |
in,O | |
Online,O | |
Mendelian,O | |
Inheritance,O | |
in,O | |
Man,O | |
with,O | |
the,O | |
terms,O | |
of,O | |
the,O | |
HPO,O | |
.,O | |
, | |
We,O | |
show,O | |
that,O | |
the,O | |
HPO,O | |
is,O | |
able,O | |
to,O | |
capture,O | |
phenotypic,O | |
similarities,O | |
between,O | |
diseases,O | |
in,O | |
a,O | |
useful,O | |
and,O | |
highly,O | |
significant,O | |
fashion,O | |
.,O | |
, | |
#22226083 | |
Transient,O | |
infantile,O | |
hypertriglyceridemia,O | |
,,O | |
fatty,O | |
liver,O | |
,,O | |
and,O | |
hepatic,O | |
fibrosis,O | |
caused,O | |
by,O | |
mutated,O | |
GPD1,B-Gene | |
,,I-Gene | |
encoding,O | |
glycerol-3,B-Gene | |
-,I-Gene | |
phosphate,I-Gene | |
dehydrogenase,I-Gene | |
1,I-Gene | |
.,I-Gene | |
, | |
The,O | |
molecular,O | |
basis,O | |
for,O | |
primary,O | |
hereditary,O | |
hypertriglyceridemia,O | |
has,O | |
been,O | |
identified,O | |
in,O | |
fewer,O | |
than,O | |
5,O | |
%,O | |
of,O | |
cases,O | |
.,O | |
, | |
Investigation,O | |
of,O | |
monogenic,O | |
dyslipidemias,O | |
has,O | |
the,O | |
potential,O | |
to,O | |
expose,O | |
key,O | |
metabolic,O | |
pathways,O | |
.,O | |
, | |
We,O | |
describe,O | |
a,O | |
hitherto,O | |
unreported,O | |
disease,O | |
in,O | |
ten,O | |
individuals,O | |
manifesting,O | |
as,O | |
moderate,O | |
to,O | |
severe,O | |
transient,O | |
childhood,O | |
hypertriglyceridemia,O | |
and,O | |
fatty,O | |
liver,O | |
followed,O | |
by,O | |
hepatic,O | |
fibrosis,O | |
and,O | |
the,O | |
identification,O | |
of,O | |
the,O | |
mutated,O | |
gene,O | |
responsible,O | |
for,O | |
this,O | |
condition,O | |
.,O | |
, | |
We,O | |
performed,O | |
SNP,O | |
array,O | |
-,O | |
based,O | |
homozygosity,O | |
mapping,O | |
and,O | |
found,O | |
a,O | |
single,O | |
large,O | |
continuous,O | |
segment,O | |
of,O | |
homozygosity,O | |
on,O | |
chromosomal,O | |
region,O | |
12q13.12,O | |
.,O | |
, | |
The,O | |
candidate,O | |
region,O | |
contained,O | |
35,O | |
genes,O | |
that,O | |
are,O | |
listed,O | |
in,O | |
Online,O | |
Mendelian,O | |
Inheritance,O | |
in,O | |
Man,O | |
(,O | |
OMIM,O | |
),O | |
and,O | |
27,O | |
other,O | |
genes,O | |
.,O | |
, | |
We,O | |
performed,O | |
candidate,O | |
gene,O | |
sequencing,O | |
and,O | |
screened,O | |
both,O | |
clinically,O | |
affected,O | |
individuals,O | |
(,O | |
children,O | |
and,O | |
adults,O | |
with,O | |
hypertriglyceridemia,O | |
),O | |
and,O | |
also,O | |
a,O | |
healthy,O | |
cohort,O | |
for,O | |
mutations,O | |
in,O | |
GPD1,B-Gene | |
,,I-Gene | |
which,O | |
encodes,O | |
glycerol-3,B-Gene | |
-,I-Gene | |
phosphate,I-Gene | |
dehydrogenase,I-Gene | |
1,I-Gene | |
.,I-Gene | |
, | |
Mutation,O | |
analysis,O | |
revealed,O | |
a,O | |
homozygous,O | |
splicing,O | |
mutation,O | |
,,O | |
c.361,B-SNP | |
-,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
C,I-SNP | |
,,I-SNP | |
which,O | |
resulted,O | |
in,O | |
an,O | |
aberrantly,O | |
spliced,O | |
mRNA,O | |
in,O | |
the,O | |
ten,O | |
affected,O | |
individuals,O | |
.,O | |
, | |
This,O | |
mutation,O | |
is,O | |
predicted,O | |
to,O | |
result,O | |
in,O | |
a,O | |
truncated,O | |
protein,O | |
lacking,O | |
essential,O | |
conserved,O | |
residues,O | |
,,O | |
including,O | |
a,O | |
functional,O | |
site,O | |
responsible,O | |
for,O | |
initial,O | |
substrate,O | |
recognition,O | |
.,O | |
, | |
Functional,O | |
consequences,O | |
of,O | |
the,O | |
mutation,O | |
were,O | |
evaluated,O | |
by,O | |
measuring,O | |
intracellular,O | |
concentrations,O | |
of,O | |
cholesterol,O | |
and,O | |
triglyceride,O | |
as,O | |
well,O | |
as,O | |
triglyceride,O | |
secretion,O | |
in,O | |
HepG2,O | |
(,O | |
hepatocellular,O | |
carcinoma,O | |
),O | |
human,O | |
cells,O | |
lines,O | |
overexpressing,O | |
normal,O | |
and,O | |
mutant,O | |
GPD1,B-Gene | |
cDNA,O | |
.,O | |
, | |
Overexpression,O | |
of,O | |
mutant,O | |
GPD1,B-Gene | |
in,O | |
HepG2,O | |
cells,O | |
,,O | |
in,O | |
comparison,O | |
to,O | |
overexpression,O | |
of,O | |
wild,O | |
-,O | |
type,O | |
GPD1,B-Gene | |
,,I-Gene | |
resulted,O | |
in,O | |
increased,O | |
secretion,O | |
of,O | |
triglycerides,O | |
(,O | |
p,O | |
=,O | |
0.01,O | |
),O | |
.,O | |
, | |
This,O | |
finding,O | |
supports,O | |
the,O | |
pathogenicity,O | |
of,O | |
the,O | |
identified,O | |
mutation,O | |
.,O | |
, | |
#1284534 | |
Mutations,O | |
and,O | |
sequence,O | |
variations,O | |
detected,O | |
in,O | |
the,O | |
cystic,B-Gene | |
fibrosis,I-Gene | |
transmembrane,I-Gene | |
conductance,I-Gene | |
regulator,I-Gene | |
(,B-Gene | |
CFTR,I-Gene | |
),I-Gene | |
gene,O | |
:,O | |
a,O | |
report,O | |
from,O | |
the,O | |
Cystic,O | |
Fibrosis,O | |
Genetic,O | |
Analysis,O | |
Consortium,O | |
.,O | |
, | |
Cystic,O | |
fibrosis,O | |
is,O | |
the,O | |
most,O | |
common,O | |
autosomal,O | |
disorder,O | |
in,O | |
the,O | |
Caucasian,O | |
population,O | |
.,O | |
, | |
Since,O | |
the,O | |
description,O | |
of,O | |
the,O | |
major,O | |
mutation,O | |
of,O | |
this,O | |
disease,O | |
in,O | |
1989,O | |
,,O | |
over,O | |
150,O | |
of,O | |
additional,O | |
mutations,O | |
have,O | |
been,O | |
identified,O | |
in,O | |
the,O | |
CFTR,O | |
gene,O | |
.,O | |
, | |
This,O | |
update,O | |
summarizes,O | |
the,O | |
different,O | |
mutations,O | |
identified,O | |
and,O | |
reported,O | |
before,O | |
March,O | |
15,O | |
by,O | |
members,O | |
of,O | |
the,O | |
international,O | |
Cystic,O | |
Fibrosis,O | |
Genetic,O | |
Analysis,O | |
Consortium,O | |
.,O | |
, | |
The,O | |
report,O | |
includes,O | |
information,O | |
on,O | |
DNA,O | |
sequence,O | |
variations,O | |
found,O | |
in,O | |
the,O | |
gene,O | |
.,O | |
, | |
#8037216 | |
Comparison,O | |
of,O | |
statistics,O | |
for,O | |
candidate,O | |
-,O | |
gene,O | |
association,O | |
studies,O | |
using,O | |
cases,O | |
and,O | |
parents,O | |
.,O | |
, | |
Studies,O | |
of,O | |
association,O | |
between,O | |
candidate,O | |
genes,O | |
and,O | |
disease,O | |
can,O | |
be,O | |
designed,O | |
to,O | |
use,O | |
cases,O | |
with,O | |
disease,O | |
,,O | |
and,O | |
in,O | |
place,O | |
of,O | |
nonrelated,O | |
controls,O | |
,,O | |
their,O | |
parents,O | |
.,O | |
, | |
The,O | |
advantage,O | |
of,O | |
this,O | |
design,O | |
is,O | |
the,O | |
elimination,O | |
of,O | |
spurious,O | |
differences,O | |
due,O | |
to,O | |
ethnic,O | |
differences,O | |
between,O | |
cases,O | |
and,O | |
nonrelated,O | |
controls,O | |
.,O | |
, | |
However,O | |
,,O | |
several,O | |
statistical,O | |
methods,O | |
of,O | |
analysis,O | |
have,O | |
been,O | |
proposed,O | |
in,O | |
the,O | |
literature,O | |
,,O | |
and,O | |
the,O | |
choice,O | |
of,O | |
analysis,O | |
is,O | |
not,O | |
always,O | |
clear,O | |
.,O | |
, | |
We,O | |
review,O | |
some,O | |
of,O | |
the,O | |
statistical,O | |
methods,O | |
currently,O | |
developed,O | |
and,O | |
present,O | |
two,O | |
new,O | |
statistical,O | |
methods,O | |
aimed,O | |
at,O | |
specific,O | |
genetic,O | |
hypotheses,O | |
of,O | |
dominance,O | |
and,O | |
recessivity,O | |
of,O | |
the,O | |
candidate,O | |
gene,O | |
.,O | |
, | |
These,O | |
new,O | |
methods,O | |
can,O | |
be,O | |
more,O | |
powerful,O | |
than,O | |
other,O | |
current,O | |
methods,O | |
,,O | |
as,O | |
demonstrated,O | |
by,O | |
simulations,O | |
.,O | |
, | |
The,O | |
basis,O | |
of,O | |
these,O | |
new,O | |
statistical,O | |
methods,O | |
is,O | |
a,O | |
likelihood,O | |
approach,O | |
.,O | |
, | |
The,O | |
advantage,O | |
of,O | |
the,O | |
likelihood,O | |
framework,O | |
is,O | |
that,O | |
regression,O | |
models,O | |
can,O | |
be,O | |
developed,O | |
to,O | |
assess,O | |
genotype,O | |
-,O | |
environment,O | |
interactions,O | |
,,O | |
as,O | |
well,O | |
as,O | |
the,O | |
relative,O | |
contribution,O | |
that,O | |
alleles,O | |
at,O | |
the,O | |
candidate,O | |
-,O | |
gene,O | |
locus,O | |
make,O | |
to,O | |
the,O | |
relative,O | |
risk,O | |
(,O | |
RR,O | |
),O | |
of,O | |
disease,O | |
.,O | |
, | |
This,O | |
latter,O | |
development,O | |
allows,O | |
testing,O | |
of,O | |
(,O | |
1,O | |
),O | |
whether,O | |
interactions,O | |
between,O | |
alleles,O | |
exist,O | |
,,O | |
on,O | |
the,O | |
scale,O | |
of,O | |
log,O | |
RR,O | |
,,O | |
and,O | |
(,O | |
2,O | |
),O | |
whether,O | |
alleles,O | |
originating,O | |
from,O | |
the,O | |
mother,O | |
or,O | |
father,O | |
of,O | |
a,O | |
case,O | |
impart,O | |
different,O | |
risks,O | |
,,O | |
i.e.,O | |
,,O | |
genomic,O | |
imprinting,O | |
.,O | |
, | |
#11524734 | |
Identification,O | |
of,O | |
seven,O | |
novel,O | |
mutations,O | |
including,O | |
the,O | |
first,O | |
two,O | |
genomic,O | |
rearrangements,O | |
in,O | |
SLC26A3,B-Gene | |
mutated,O | |
in,O | |
congenital,O | |
chloride,O | |
diarrhea,O | |
.,O | |
, | |
Congenital,O | |
chloride,O | |
diarrhea,O | |
(,O | |
CLD,O | |
),O | |
is,O | |
an,O | |
autosomal,O | |
recessive,O | |
disorder,O | |
characterized,O | |
by,O | |
defective,O | |
intestinal,O | |
electrolyte,O | |
absorption,O | |
,,O | |
resulting,O | |
in,O | |
voluminous,O | |
osmotic,O | |
diarrhea,O | |
with,O | |
high,O | |
chloride,O | |
content,O | |
.,O | |
, | |
A,O | |
variety,O | |
of,O | |
mutations,O | |
in,O | |
the,O | |
solute,B-Gene | |
carrier,I-Gene | |
family,I-Gene | |
26,I-Gene | |
,,I-Gene | |
member,I-Gene | |
3,I-Gene | |
gene,I-Gene | |
(,B-Gene | |
SLC26A3,I-Gene | |
,,I-Gene | |
previously,O | |
known,O | |
as,O | |
CLD,B-Gene | |
or,O | |
DRA,B-Gene | |
),I-Gene | |
are,O | |
responsible,O | |
for,O | |
the,O | |
disease,O | |
.,O | |
, | |
Since,O | |
the,O | |
identification,O | |
of,O | |
the,O | |
SLC26A3,O | |
gene,O | |
and,O | |
the,O | |
determination,O | |
of,O | |
its,O | |
genomic,O | |
structure,O | |
,,O | |
altogether,O | |
three,O | |
founder,O | |
and,O | |
17,O | |
private,O | |
mutations,O | |
have,O | |
been,O | |
characterized,O | |
within,O | |
miscellaneous,O | |
ethnic,O | |
groups,O | |
.,O | |
, | |
We,O | |
screened,O | |
for,O | |
mutations,O | |
in,O | |
seven,O | |
unrelated,O | |
families,O | |
with,O | |
CLD,O | |
.,O | |
, | |
The,O | |
diagnoses,O | |
were,O | |
confirmed,O | |
by,O | |
fecal,O | |
chloride,O | |
measurements,O | |
.,O | |
, | |
The,O | |
combined,O | |
PCR,O | |
-,O | |
SSCP,O | |
and,O | |
sequencing,O | |
analyses,O | |
revealed,O | |
altogether,O | |
seven,O | |
novel,O | |
mutations,O | |
including,O | |
two,O | |
missense,O | |
mutations,O | |
(,B-SNP | |
S206P,I-SNP | |
,,I-SNP | |
D468V,B-SNP | |
),I-SNP | |
,,O | |
two,O | |
splicing,O | |
defects,O | |
(,B-SNP | |
IVS12,I-SNP | |
-,I-SNP | |
1G,I-SNP | |
>,I-SNP | |
C,I-SNP | |
,,I-SNP | |
IVS13,B-SNP | |
-,I-SNP | |
2delA,I-SNP | |
),I-SNP | |
,,O | |
one,O | |
nonsense,O | |
mutation,O | |
(,B-SNP | |
Q436X,I-SNP | |
),I-SNP | |
,,O | |
one,O | |
insertion,O | |
/,O | |
deletion,O | |
mutation,O | |
(,B-SNP | |
2104,I-SNP | |
-,I-SNP | |
2105delGGins29,I-SNP | |
-,I-SNP | |
bp,I-SNP | |
),I-SNP | |
,,O | |
and,O | |
an,O | |
intragenic,O | |
deletion,O | |
of,O | |
SLC26A3,B-Gene | |
exons,O | |
7,O | |
and,O | |
8,O | |
.,O | |
, | |
Two,O | |
previously,O | |
identified,O | |
mutations,O | |
were,O | |
also,O | |
found,O | |
.,O | |
, | |
This,O | |
is,O | |
the,O | |
first,O | |
report,O | |
of,O | |
rearrangement,O | |
mutations,O | |
in,O | |
SLC26A3,B-Gene | |
.,I-Gene | |
, | |
Molecular,O | |
features,O | |
predisposing,O | |
SLC26A3,B-Gene | |
for,O | |
the,O | |
two,O | |
rearrangements,O | |
may,O | |
include,O | |
repetitive,O | |
elements,O | |
and,O | |
palindromic,O | |
-,O | |
like,O | |
sequences,O | |
.,O | |
, | |
The,O | |
increasingly,O | |
wide,O | |
diversity,O | |
of,O | |
SLC26A3,B-Gene | |
mutations,O | |
suggests,O | |
that,O | |
mutations,O | |
in,O | |
the,O | |
SLC26A3,B-Gene | |
gene,O | |
may,O | |
not,O | |
be,O | |
rare,O | |
events,O | |
.,O | |
, | |
#10577916 | |
Variation,O | |
in,O | |
short,O | |
tandem,O | |
repeats,O | |
is,O | |
deeply,O | |
structured,O | |
by,O | |
genetic,O | |
background,O | |
on,O | |
the,O | |
human,O | |
Y,O | |
chromosome,O | |
.,O | |
, | |
Eleven,O | |
biallelic,O | |
polymorphisms,O | |
and,O | |
seven,O | |
short,O | |
-,O | |
tandem,O | |
-,O | |
repeat,O | |
(,O | |
STR,O | |
),O | |
loci,O | |
mapping,O | |
on,O | |
the,O | |
nonrecombining,O | |
portion,O | |
of,O | |
the,O | |
human,O | |
Y,O | |
chromosome,O | |
have,O | |
been,O | |
typed,O | |
in,O | |
men,O | |
from,O | |
northwestern,O | |
Africa,O | |
.,O | |
, | |
Analysis,O | |
of,O | |
the,O | |
biallelic,O | |
markers,O | |
,,O | |
which,O | |
represent,O | |
probable,O | |
unique,O | |
events,O | |
in,O | |
human,O | |
evolution,O | |
,,O | |
allowed,O | |
us,O | |
to,O | |
characterize,O | |
the,O | |
stable,O | |
backgrounds,O | |
or,O | |
haplogroups,O | |
of,O | |
Y,O | |
chromosomes,O | |
that,O | |
prevail,O | |
in,O | |
this,O | |
geographic,O | |
region,O | |
.,O | |
, | |
Variation,O | |
in,O | |
the,O | |
more,O | |
rapidly,O | |
mutating,O | |
genetic,O | |
markers,O | |
(,O | |
STRs,O | |
),O | |
has,O | |
been,O | |
used,O | |
both,O | |
to,O | |
estimate,O | |
the,O | |
time,O | |
to,O | |
the,O | |
most,O | |
recent,O | |
common,O | |
ancestor,O | |
for,O | |
STR,O | |
variability,O | |
within,O | |
these,O | |
stable,O | |
backgrounds,O | |
and,O | |
to,O | |
explore,O | |
whether,O | |
STR,O | |
differentiation,O | |
among,O | |
haplogroups,O | |
still,O | |
retains,O | |
information,O | |
about,O | |
their,O | |
phylogeny,O | |
.,O | |
, | |
When,O | |
analysis,O | |
of,O | |
molecular,O | |
variance,O | |
was,O | |
used,O | |
to,O | |
study,O | |
the,O | |
apportionment,O | |
of,O | |
STR,O | |
variation,O | |
among,O | |
both,O | |
genetic,O | |
backgrounds,O | |
(,O | |
i.e.,O | |
,,O | |
those,O | |
defined,O | |
by,O | |
haplogroups,O | |
),O | |
and,O | |
population,O | |
backgrounds,O | |
,,O | |
we,O | |
found,O | |
STR,O | |
variability,O | |
to,O | |
be,O | |
clearly,O | |
structured,O | |
by,O | |
haplogroups,O | |
.,O | |
, | |
More,O | |
than,O | |
80,O | |
%,O | |
of,O | |
the,O | |
genetic,O | |
variance,O | |
was,O | |
found,O | |
among,O | |
haplogroups,O | |
,,O | |
whereas,O | |
only,O | |
3.72,O | |
%,O | |
of,O | |
the,O | |
genetic,O | |
variation,O | |
could,O | |
be,O | |
attributed,O | |
to,O | |
differences,O | |
among,O | |
populations,O | |
-,O | |
that,O | |
is,O | |
,,O | |
genetic,O | |
variability,O | |
appears,O | |
to,O | |
be,O | |
much,O | |
more,O | |
structured,O | |
by,O | |
lineage,O | |
than,O | |
by,O | |
population,O | |
.,O | |
, | |
This,O | |
was,O | |
confirmed,O | |
when,O | |
two,O | |
population,O | |
samples,O | |
from,O | |
the,O | |
Iberian,O | |
Peninsula,O | |
were,O | |
added,O | |
to,O | |
the,O | |
analysis,O | |
.,O | |
, | |
The,O | |
deep,O | |
structure,O | |
of,O | |
the,O | |
genetic,O | |
variation,O | |
in,O | |
old,O | |
genealogical,O | |
units,O | |
(,O | |
haplogroups,O | |
),O | |
challenges,O | |
a,O | |
population,O | |
-,O | |
based,O | |
perspective,O | |
in,O | |
the,O | |
comprehension,O | |
of,O | |
human,O | |
genome,O | |
diversity,O | |
.,O | |
, | |
A,O | |
population,O | |
may,O | |
be,O | |
better,O | |
understood,O | |
as,O | |
an,O | |
association,O | |
of,O | |
lineages,O | |
from,O | |
a,O | |
deep,O | |
and,O | |
population,O | |
-,O | |
independent,O | |
gene,O | |
genealogy,O | |
,,O | |
rather,O | |
than,O | |
as,O | |
a,O | |
complete,O | |
evolutionary,O | |
unit,O | |
.,O | |
, | |
#8503437 | |
X,O | |
-,O | |
linked,O | |
mental,O | |
retardation,O | |
:,O | |
in,O | |
pursuit,O | |
of,O | |
a,O | |
gene,O | |
map,O | |
.,O | |
, | |
#18521937 | |
Mutations,O | |
in,O | |
CNGA3,B-Gene | |
impair,O | |
trafficking,O | |
or,O | |
function,O | |
of,O | |
cone,O | |
cyclic,O | |
nucleotide,O | |
-,O | |
gated,O | |
channels,O | |
,,O | |
resulting,O | |
in,O | |
achromatopsia,O | |
.,O | |
, | |
CNGA3,B-Gene | |
encodes,O | |
the,O | |
A,O | |
-,O | |
subunit,O | |
of,O | |
the,O | |
cone,O | |
photoreceptor,O | |
cyclic,O | |
nucleotide,O | |
-,O | |
gated,O | |
(,O | |
CNG,O | |
),O | |
channel,O | |
,,O | |
which,O | |
is,O | |
a,O | |
crucial,O | |
component,O | |
of,O | |
the,O | |
phototransduction,O | |
cascade,O | |
in,O | |
cone,O | |
outer,O | |
segments,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
the,O | |
CNGA3,B-Gene | |
gene,O | |
have,O | |
been,O | |
associated,O | |
with,O | |
complete,O | |
and,O | |
incomplete,O | |
forms,O | |
of,O | |
achromatopsia,O | |
(,O | |
ACHR,O | |
),O | |
,,O | |
a,O | |
congenital,O | |
,,O | |
autosomal,O | |
recessively,O | |
inherited,O | |
retinal,O | |
disorder,O | |
characterized,O | |
by,O | |
lack,O | |
of,O | |
color,O | |
discrimination,O | |
,,O | |
reduced,O | |
visual,O | |
acuity,O | |
,,O | |
nystagmus,O | |
,,O | |
and,O | |
photophobia,O | |
.,O | |
, | |
Here,O | |
we,O | |
report,O | |
the,O | |
identification,O | |
of,O | |
three,O | |
novel,O | |
CNGA3,B-Gene | |
missense,O | |
mutations,O | |
in,O | |
ACHR,O | |
patients,O | |
:,O | |
c.682G,B-SNP | |
>,I-SNP | |
, | |
A,B-SNP | |
(,B-SNP | |
p.,I-SNP | |
E228,I-SNP | |
K,I-SNP | |
),I-SNP | |
,,O | |
c.1315C,B-SNP | |
>,I-SNP | |
T,I-SNP | |
(,B-SNP | |
p.,I-SNP | |
R439W,I-SNP | |
),I-SNP | |
,,O | |
and,O | |
c.1405G,B-SNP | |
>,I-SNP | |
, | |
A,B-SNP | |
(,B-SNP | |
p.,I-SNP | |
A469,I-SNP | |
T,I-SNP | |
),I-SNP | |
,,O | |
and,O | |
the,O | |
detailed,O | |
functional,O | |
analyses,O | |
of,O | |
these,O | |
new,O | |
as,O | |
well,O | |
as,O | |
five,O | |
previously,O | |
reported,O | |
mutations,O | |
(,B-SNP | |
R283Q,I-SNP | |
,,I-SNP | |
T291R,B-SNP | |
,,I-SNP | |
F547L,B-SNP | |
,,I-SNP | |
G557R,B-SNP | |
,,I-SNP | |
and,O | |
E590,B-SNP | |
K,I-SNP | |
),I-SNP | |
,,O | |
in,O | |
conjunction,O | |
with,O | |
clinical,O | |
data,O | |
of,O | |
patients,O | |
carrying,O | |
these,O | |
mutations,O | |
,,O | |
to,O | |
establish,O | |
genotype,O | |
-,O | |
phenotype,O | |
correlations,O | |
.,O | |
, | |
The,O | |
functional,O | |
characterization,O | |
of,O | |
mutant,O | |
CNGA3,B-Gene | |
channels,O | |
was,O | |
performed,O | |
with,O | |
calcium,O | |
imaging,O | |
and,O | |
patch,O | |
clamp,O | |
recordings,O | |
in,O | |
a,O | |
heterologous,O | |
HEK293,O | |
cell,O | |
expression,O | |
system,O | |
.,O | |
, | |
Results,O | |
were,O | |
corroborated,O | |
by,O | |
immunostaining,O | |
and,O | |
colocalization,O | |
experiments,O | |
of,O | |
the,O | |
channel,O | |
protein,O | |
with,O | |
the,O | |
plasma,O | |
membrane,O | |
.,O | |
, | |
Several,O | |
mutations,O | |
evoked,O | |
pronounced,O | |
alterations,O | |
of,O | |
the,O | |
apparent,O | |
cGMP,O | |
sensitivity,O | |
of,O | |
mutant,O | |
channels,O | |
.,O | |
, | |
These,O | |
functional,O | |
defects,O | |
were,O | |
fully,O | |
or,O | |
partially,O | |
compensated,O | |
by,O | |
coexpressing,O | |
the,O | |
mutant,O | |
CNGA3,B-Gene | |
subunit,O | |
with,O | |
the,O | |
wild,O | |
-,O | |
type,O | |
CNGB3,B-Gene | |
subunit,O | |
for,O | |
channels,O | |
with,O | |
the,O | |
mutations,O | |
R439W,B-SNP | |
,,I-SNP | |
A469,B-SNP | |
T,I-SNP | |
,,I-SNP | |
F547L,B-SNP | |
,,I-SNP | |
and,O | |
E590,B-SNP | |
K.,I-SNP | |
We,O | |
could,O | |
show,O | |
that,O | |
several,O | |
mutant,O | |
channels,O | |
with,O | |
agonist,O | |
dose,O | |
-,O | |
response,O | |
relationships,O | |
similar,O | |
to,O | |
the,O | |
wild,O | |
-,O | |
type,O | |
exhibited,O | |
severely,O | |
impaired,O | |
membrane,O | |
targeting,O | |
.,O | |
, | |
In,O | |
addition,O | |
,,O | |
this,O | |
study,O | |
presents,O | |
the,O | |
positive,O | |
effect,O | |
of,O | |
reduced,O | |
cell,O | |
culture,O | |
temperature,O | |
on,O | |
surface,O | |
expression,O | |
and,O | |
functional,O | |
performance,O | |
of,O | |
mutant,O | |
CNG,O | |
channels,O | |
with,O | |
protein,O | |
folding,O | |
or,O | |
trafficking,O | |
defects,O | |
.,O | |
, | |
#15309688 | |
The,O | |
Longue,O | |
Durée,O | |
of,O | |
genetic,O | |
ancestry,O | |
:,O | |
multiple,O | |
genetic,O | |
marker,O | |
systems,O | |
and,O | |
Celtic,O | |
origins,O | |
on,O | |
the,O | |
Atlantic,O | |
facade,O | |
of,O | |
Europe,O | |
.,O | |
, | |
Celtic,O | |
languages,O | |
are,O | |
now,O | |
spoken,O | |
only,O | |
on,O | |
the,O | |
Atlantic,O | |
facade,O | |
of,O | |
Europe,O | |
,,O | |
mainly,O | |
in,O | |
Britain,O | |
and,O | |
Ireland,O | |
,,O | |
but,O | |
were,O | |
spoken,O | |
more,O | |
widely,O | |
in,O | |
western,O | |
and,O | |
central,O | |
Europe,O | |
until,O | |
the,O | |
collapse,O | |
of,O | |
the,O | |
Roman,O | |
Empire,O | |
in,O | |
the,O | |
first,O | |
millennium,O | |
a.d,O | |
.,O | |
, | |
It,O | |
has,O | |
been,O | |
common,O | |
to,O | |
couple,O | |
archaeological,O | |
evidence,O | |
for,O | |
the,O | |
expansion,O | |
of,O | |
Iron,O | |
Age,O | |
elites,O | |
in,O | |
central,O | |
Europe,O | |
with,O | |
the,O | |
dispersal,O | |
of,O | |
these,O | |
languages,O | |
and,O | |
of,O | |
Celtic,O | |
ethnicity,O | |
and,O | |
to,O | |
posit,O | |
a,O | |
central,O | |
European,O | |
",O | |
homeland,O | |
",O | |
for,O | |
the,O | |
Celtic,O | |
peoples,O | |
.,O | |
, | |
More,O | |
recently,O | |
,,O | |
however,O | |
,,O | |
archaeologists,O | |
have,O | |
questioned,O | |
this,O | |
",O | |
migrationist,O | |
",O | |
view,O | |
of,O | |
Celtic,O | |
ethnogenesis,O | |
.,O | |
, | |
The,O | |
proposition,O | |
of,O | |
a,O | |
central,O | |
European,O | |
ancestry,O | |
should,O | |
be,O | |
testable,O | |
by,O | |
examining,O | |
the,O | |
distribution,O | |
of,O | |
genetic,O | |
markers,O | |
;,O | |
however,O | |
,,O | |
although,O | |
Y,O | |
-,O | |
chromosome,O | |
patterns,O | |
in,O | |
Atlantic,O | |
Europe,O | |
show,O | |
little,O | |
evidence,O | |
of,O | |
central,O | |
European,O | |
influence,O | |
,,O | |
there,O | |
has,O | |
hitherto,O | |
been,O | |
insufficient,O | |
data,O | |
to,O | |
confirm,O | |
this,O | |
by,O | |
use,O | |
of,O | |
mitochondrial,O | |
DNA,O | |
(,O | |
mtDNA,O | |
),O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
present,O | |
both,O | |
new,O | |
mtDNA,O | |
data,O | |
from,O | |
Ireland,O | |
and,O | |
a,O | |
novel,O | |
analysis,O | |
of,O | |
a,O | |
greatly,O | |
enlarged,O | |
European,O | |
mtDNA,O | |
database,O | |
.,O | |
, | |
We,O | |
show,O | |
that,O | |
mtDNA,O | |
lineages,O | |
,,O | |
when,O | |
analyzed,O | |
in,O | |
sufficiently,O | |
large,O | |
numbers,O | |
,,O | |
display,O | |
patterns,O | |
significantly,O | |
similar,O | |
to,O | |
a,O | |
large,O | |
fraction,O | |
of,O | |
both,O | |
Y,O | |
-,O | |
chromosome,O | |
and,O | |
autosomal,O | |
variation,O | |
.,O | |
, | |
These,O | |
multiple,O | |
genetic,O | |
marker,O | |
systems,O | |
indicate,O | |
a,O | |
shared,O | |
ancestry,O | |
throughout,O | |
the,O | |
Atlantic,O | |
zone,O | |
,,O | |
from,O | |
northern,O | |
Iberia,O | |
to,O | |
western,O | |
Scandinavia,O | |
,,O | |
that,O | |
dates,O | |
back,O | |
to,O | |
the,O | |
end,O | |
of,O | |
the,O | |
last,O | |
Ice,O | |
Age,O | |
.,O | |
, | |
#1301931 | |
Polymorphic,O | |
variation,O | |
within,O | |
",O | |
conserved,O | |
",O | |
sequences,O | |
at,O | |
the,O | |
3,O | |
',O | |
end,O | |
of,O | |
the,O | |
human,O | |
RDS,B-Gene | |
gene,O | |
which,O | |
results,O | |
in,O | |
amino,O | |
acid,O | |
substitutions,O | |
.,O | |
, | |
The,O | |
human,O | |
RDS,B-Gene | |
gene,O | |
,,O | |
previously,O | |
mapped,O | |
to,O | |
chromosome,O | |
6p,O | |
,,O | |
encodes,O | |
a,O | |
protein,O | |
found,O | |
in,O | |
the,O | |
outer,O | |
disc,O | |
membrane,O | |
of,O | |
the,O | |
photoreceptor,O | |
cells,O | |
of,O | |
the,O | |
retina,O | |
.,O | |
, | |
The,O | |
cDNA,O | |
sequence,O | |
of,O | |
the,O | |
human,O | |
gene,O | |
shows,O | |
85,O | |
%,O | |
identity,O | |
with,O | |
the,O | |
bovine,O | |
peripherin,O | |
gene,O | |
and,O | |
the,O | |
rds,B-Gene | |
(,B-Gene | |
retinal,I-Gene | |
degeneration,I-Gene | |
slow,I-Gene | |
),I-Gene | |
genes,O | |
from,O | |
mouse,O | |
and,O | |
rat,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
the,O | |
RDS,O | |
gene,O | |
have,O | |
recently,O | |
been,O | |
implicated,O | |
in,O | |
autosomal,B-Gene | |
dominant,I-Gene | |
retinitis,I-Gene | |
pigmentosa,I-Gene | |
(,B-Gene | |
adRP,I-Gene | |
),I-Gene | |
in,O | |
some,O | |
families,O | |
.,O | |
, | |
Here,O | |
we,O | |
present,O | |
evidence,O | |
that,O | |
the,O | |
third,O | |
exon,O | |
of,O | |
this,O | |
gene,O | |
is,O | |
subject,O | |
to,O | |
polymorphic,O | |
variation,O | |
in,O | |
humans,O | |
.,O | |
, | |
The,O | |
three,O | |
sequence,O | |
alterations,O | |
described,O | |
in,O | |
this,O | |
paper,O | |
give,O | |
rise,O | |
to,O | |
amino,O | |
acid,O | |
substitutions,O | |
.,O | |
, | |
However,O | |
,,O | |
as,O | |
these,O | |
missense,O | |
mutations,O | |
also,O | |
occur,O | |
in,O | |
the,O | |
normal,O | |
population,O | |
they,O | |
are,O | |
not,O | |
implicated,O | |
as,O | |
causing,O | |
adRP,O | |
.,O | |
, | |
Interestingly,O | |
such,O | |
sequence,O | |
variation,O | |
is,O | |
not,O | |
found,O | |
within,O | |
other,O | |
species,O | |
examined,O | |
including,O | |
mouse,O | |
and,O | |
bovine,O | |
.,O | |
, | |
These,O | |
intragenic,O | |
polymorphisms,O | |
will,O | |
be,O | |
of,O | |
future,O | |
potential,O | |
value,O | |
in,O | |
studies,O | |
to,O | |
locate,O | |
further,O | |
disease,O | |
causing,O | |
mutations,O | |
in,O | |
adRP,O | |
patients,O | |
in,O | |
the,O | |
RDS,B-Gene | |
gene,O | |
.,O | |
, | |
#7912883 | |
The,O | |
genetics,O | |
of,O | |
human,O | |
limb,O | |
development,O | |
.,O | |
, | |
#19626718 | |
Insights,O | |
into,O | |
the,O | |
importance,O | |
of,O | |
miRNA,O | |
-,O | |
related,O | |
polymorphisms,O | |
to,O | |
heart,O | |
disease,O | |
.,O | |
, | |
#8318989 | |
Screening,O | |
for,O | |
molecular,O | |
pathologies,O | |
in,O | |
Lesch,O | |
-,O | |
Nyhan,O | |
syndrome,O | |
.,O | |
, | |
Heteroduplex,O | |
detection,O | |
by,O | |
hydrolink,O | |
gel,O | |
electrophoresis,O | |
was,O | |
performed,O | |
to,O | |
screen,O | |
for,O | |
small,O | |
mutations,O | |
in,O | |
12,O | |
Lesch,O | |
-,O | |
Nyhan,O | |
syndrome,O | |
families,O | |
with,O | |
characterised,O | |
molecular,O | |
pathology,O | |
which,O | |
included,O | |
nine,O | |
point,O | |
mutations,O | |
,,O | |
two,O | |
small,O | |
deletions,O | |
,,O | |
and,O | |
a,O | |
1,O | |
-,O | |
bp,O | |
insertion,O | |
.,O | |
, | |
This,O | |
modified,O | |
protocol,O | |
for,O | |
heteroduplex,O | |
detection,O | |
by,O | |
hydrolink,O | |
gel,O | |
electrophoresis,O | |
detected,O | |
all,O | |
12,O | |
of,O | |
these,O | |
mutations,O | |
and,O | |
was,O | |
utilised,O | |
to,O | |
rapidly,O | |
determine,O | |
the,O | |
carrier,O | |
status,O | |
of,O | |
females,O | |
from,O | |
affected,O | |
families,O | |
.,O | |
, | |
On,O | |
the,O | |
basis,O | |
of,O | |
these,O | |
results,O | |
this,O | |
approach,O | |
appears,O | |
to,O | |
be,O | |
a,O | |
rapid,O | |
and,O | |
reliable,O | |
screening,O | |
method,O | |
for,O | |
point,O | |
mutations,O | |
in,O | |
addition,O | |
to,O | |
small,O | |
length,O | |
mutations,O | |
and,O | |
for,O | |
carrier,O | |
detection,O | |
in,O | |
Lesch,O | |
-,O | |
Nyhan,O | |
syndrome,O | |
.,O | |
, | |
#21280151 | |
Searching,O | |
for,O | |
the,O | |
missing,O | |
heritability,O | |
of,O | |
complex,O | |
diseases,O | |
.,O | |
, | |
#12016592 | |
Intron,O | |
-,O | |
size,O | |
constraint,O | |
as,O | |
a,O | |
mutational,O | |
mechanism,O | |
in,O | |
Rothmund,O | |
-,O | |
Thomson,O | |
syndrome,O | |
.,O | |
, | |
Rothmund,O | |
-,O | |
Thomson,O | |
syndrome,O | |
(,O | |
RTS,O | |
),O | |
is,O | |
an,O | |
autosomal,O | |
recessive,O | |
disorder,O | |
caused,O | |
by,O | |
deleterious,O | |
mutations,O | |
in,O | |
the,O | |
RECQL4,B-Gene | |
gene,O | |
on,O | |
chromosome,O | |
8,O | |
.,O | |
, | |
The,O | |
RECQL4,B-Gene | |
gene,O | |
structure,O | |
is,O | |
unusual,O | |
because,O | |
it,O | |
contains,O | |
many,O | |
small,O | |
introns,O | |
<,O | |
100,O | |
bp,O | |
.,O | |
, | |
We,O | |
describe,O | |
a,O | |
proband,O | |
with,O | |
RTS,O | |
who,O | |
has,O | |
a,O | |
novel,O | |
11,O | |
-,O | |
bp,O | |
intronic,O | |
deletion,O | |
,,O | |
and,O | |
we,O | |
show,O | |
that,O | |
this,O | |
mutation,O | |
results,O | |
in,O | |
a,O | |
66,O | |
-,O | |
bp,O | |
intron,O | |
too,O | |
small,O | |
for,O | |
proper,O | |
splicing,O | |
.,O | |
, | |
Constraint,O | |
on,O | |
intron,O | |
size,O | |
may,O | |
represent,O | |
a,O | |
general,O | |
mutational,O | |
mechanism,O | |
,,O | |
since,O | |
human,O | |
-,O | |
genome,O | |
analysis,O | |
reveals,O | |
that,O | |
approximately,O | |
15,O | |
%,O | |
of,O | |
genes,O | |
have,O | |
introns,O | |
<,O | |
100,O | |
bp,O | |
and,O | |
are,O | |
therefore,O | |
susceptible,O | |
to,O | |
size,O | |
constraint,O | |
.,O | |
, | |
Thus,O | |
,,O | |
monitoring,O | |
of,O | |
intron,O | |
size,O | |
may,O | |
allow,O | |
detection,O | |
of,O | |
mutations,O | |
missed,O | |
by,O | |
exon,O | |
-,O | |
by,O | |
-,O | |
exon,O | |
approaches,O | |
.,O | |
, | |
#15053010 | |
2003,O | |
Curt,O | |
Stern,O | |
Award,O | |
address,O | |
.,O | |
, | |
On,O | |
low,O | |
expectation,O | |
exceeded,O | |
;,O | |
or,O | |
,,O | |
the,O | |
genomic,O | |
salvation,O | |
of,O | |
the,O | |
Y,O | |
chromosome,O | |
.,O | |
, | |
#21944045 | |
Denisova,O | |
admixture,O | |
and,O | |
the,O | |
first,O | |
modern,O | |
human,O | |
dispersals,O | |
into,O | |
Southeast,O | |
Asia,O | |
and,O | |
Oceania,O | |
.,O | |
, | |
It,O | |
has,O | |
recently,O | |
been,O | |
shown,O | |
that,O | |
ancestors,O | |
of,O | |
New,O | |
Guineans,O | |
and,O | |
Bougainville,O | |
Islanders,O | |
have,O | |
inherited,O | |
a,O | |
proportion,O | |
of,O | |
their,O | |
ancestry,O | |
from,O | |
Denisovans,O | |
,,O | |
an,O | |
archaic,O | |
hominin,O | |
group,O | |
from,O | |
Siberia,O | |
.,O | |
, | |
However,O | |
,,O | |
only,O | |
a,O | |
sparse,O | |
sampling,O | |
of,O | |
populations,O | |
from,O | |
Southeast,O | |
Asia,O | |
and,O | |
Oceania,O | |
were,O | |
analyzed,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
quantify,O | |
Denisova,O | |
admixture,O | |
in,O | |
33,O | |
additional,O | |
populations,O | |
from,O | |
Asia,O | |
and,O | |
Oceania,O | |
.,O | |
, | |
Aboriginal,O | |
Australians,O | |
,,O | |
Near,O | |
Oceanians,O | |
,,O | |
Polynesians,O | |
,,O | |
Fijians,O | |
,,O | |
east,O | |
Indonesians,O | |
,,O | |
and,O | |
Mamanwa,O | |
(,O | |
a,O | |
",O | |
Negrito,O | |
",O | |
group,O | |
from,O | |
the,O | |
Philippines,O | |
),O | |
have,O | |
all,O | |
inherited,O | |
genetic,O | |
material,O | |
from,O | |
Denisovans,O | |
,,O | |
but,O | |
mainland,O | |
East,O | |
Asians,O | |
,,O | |
western,O | |
Indonesians,O | |
,,O | |
Jehai,O | |
(,O | |
a,O | |
Negrito,O | |
group,O | |
from,O | |
Malaysia,O | |
),O | |
,,O | |
and,O | |
Onge,O | |
(,O | |
a,O | |
Negrito,O | |
group,O | |
from,O | |
the,O | |
Andaman,O | |
Islands,O | |
),O | |
have,O | |
not,O | |
.,O | |
, | |
These,O | |
results,O | |
indicate,O | |
that,O | |
Denisova,O | |
gene,O | |
flow,O | |
occurred,O | |
into,O | |
the,O | |
common,O | |
ancestors,O | |
of,O | |
New,O | |
Guineans,O | |
,,O | |
Australians,O | |
,,O | |
and,O | |
Mamanwa,O | |
but,O | |
not,O | |
into,O | |
the,O | |
ancestors,O | |
of,O | |
the,O | |
Jehai,O | |
and,O | |
Onge,O | |
and,O | |
suggest,O | |
that,O | |
relatives,O | |
of,O | |
present,O | |
-,O | |
day,O | |
East,O | |
Asians,O | |
were,O | |
not,O | |
in,O | |
Southeast,O | |
Asia,O | |
when,O | |
the,O | |
Denisova,O | |
gene,O | |
flow,O | |
occurred,O | |
.,O | |
, | |
Our,O | |
finding,O | |
that,O | |
descendants,O | |
of,O | |
the,O | |
earliest,O | |
inhabitants,O | |
of,O | |
Southeast,O | |
Asia,O | |
do,O | |
not,O | |
all,O | |
harbor,O | |
Denisova,O | |
admixture,O | |
is,O | |
inconsistent,O | |
with,O | |
a,O | |
history,O | |
in,O | |
which,O | |
the,O | |
Denisova,O | |
interbreeding,O | |
occurred,O | |
in,O | |
mainland,O | |
Asia,O | |
and,O | |
then,O | |
spread,O | |
over,O | |
Southeast,O | |
Asia,O | |
,,O | |
leading,O | |
to,O | |
all,O | |
its,O | |
earliest,O | |
modern,O | |
human,O | |
inhabitants,O | |
.,O | |
, | |
Instead,O | |
,,O | |
the,O | |
data,O | |
can,O | |
be,O | |
most,O | |
parsimoniously,O | |
explained,O | |
if,O | |
the,O | |
Denisova,O | |
gene,O | |
flow,O | |
occurred,O | |
in,O | |
Southeast,O | |
Asia,O | |
itself,O | |
.,O | |
, | |
Thus,O | |
,,O | |
archaic,O | |
Denisovans,O | |
must,O | |
have,O | |
lived,O | |
over,O | |
an,O | |
extraordinarily,O | |
broad,O | |
geographic,O | |
and,O | |
ecological,O | |
range,O | |
,,O | |
from,O | |
Siberia,O | |
to,O | |
tropical,O | |
Asia,O | |
.,O | |
, | |
#1284474 | |
Mutation,O | |
creating,O | |
a,O | |
new,O | |
splice,O | |
site,O | |
in,O | |
the,O | |
growth,O | |
hormone,O | |
receptor,O | |
genes,O | |
of,O | |
37,O | |
Ecuadorean,O | |
patients,O | |
with,O | |
Laron,O | |
syndrome,O | |
.,O | |
, | |
Laron,O | |
syndrome,O | |
is,O | |
an,O | |
autosomal,O | |
recessive,O | |
condition,O | |
characterized,O | |
by,O | |
resistance,O | |
to,O | |
growth,O | |
hormone,O | |
.,O | |
, | |
We,O | |
sought,O | |
to,O | |
determine,O | |
the,O | |
molecular,O | |
basis,O | |
of,O | |
this,O | |
condition,O | |
in,O | |
an,O | |
Ecuadorean,O | |
population,O | |
with,O | |
a,O | |
high,O | |
incidence,O | |
of,O | |
affected,O | |
individuals,O | |
.,O | |
, | |
Growth,O | |
hormone,O | |
receptor,O | |
gene,O | |
sequences,O | |
from,O | |
an,O | |
obligate,O | |
heterozygote,O | |
were,O | |
amplified,O | |
by,O | |
the,O | |
polymerase,O | |
chain,O | |
reaction,O | |
and,O | |
screened,O | |
for,O | |
mutations,O | |
using,O | |
denaturing,O | |
gradient,O | |
gel,O | |
electrophoresis,O | |
.,O | |
, | |
Only,O | |
exon,O | |
6,O | |
revealed,O | |
homo-,O | |
and,O | |
heteroduplexes,O | |
on,O | |
denaturing,O | |
gradient,O | |
gels,O | |
.,O | |
, | |
Sequencing,O | |
revealed,O | |
a,O | |
substitution,O | |
of,O | |
guanine,O | |
for,O | |
adenine,O | |
in,O | |
the,O | |
third,O | |
position,O | |
of,O | |
codon,O | |
180,O | |
that,O | |
did,O | |
not,O | |
change,O | |
the,O | |
amino,O | |
acid,O | |
encoded,O | |
.,O | |
, | |
Sequencing,O | |
of,O | |
the,O | |
exon,O | |
6,O | |
-,O | |
exon,O | |
7,O | |
splice,O | |
junction,O | |
from,O | |
RNA,O | |
-,O | |
polymerase,O | |
chain,O | |
reaction,O | |
amplified,O | |
cellular,O | |
RNA,O | |
of,O | |
an,O | |
affected,O | |
individual,O | |
revealed,O | |
that,O | |
the,O | |
substitution,O | |
activates,O | |
a,O | |
5,O | |
',O | |
splice,O | |
site,O | |
24,O | |
nucleotides,O | |
upstream,O | |
from,O | |
the,O | |
normal,O | |
exon,O | |
6,O | |
-,O | |
intron,O | |
6,O | |
boundary,O | |
.,O | |
, | |
Splicing,O | |
in,O | |
two,O | |
probands,O | |
',O | |
lymphoblasts,O | |
occurred,O | |
virtually,O | |
exclusively,O | |
at,O | |
the,O | |
abnormal,O | |
5,O | |
',O | |
splice,O | |
site,O | |
created,O | |
by,O | |
the,O | |
codon,O | |
180,O | |
substitution,O | |
.,O | |
, | |
Exon,O | |
6,O | |
sequences,O | |
from,O | |
38,O | |
patients,O | |
and,O | |
47,O | |
relatives,O | |
were,O | |
amplified,O | |
and,O | |
analyzed,O | |
by,O | |
sequencing,O | |
or,O | |
dot,O | |
-,O | |
blot,O | |
hybridization,O | |
with,O | |
allele,O | |
-,O | |
specific,O | |
oligonucleotides,O | |
.,O | |
, | |
The,O | |
substitution,O | |
was,O | |
detected,O | |
in,O | |
74,O | |
of,O | |
76,O | |
Laron,O | |
syndrome,O | |
patients,O | |
',O | |
GH,O | |
-,O | |
receptor,O | |
alleles,O | |
.,O | |
, | |
All,O | |
26,O | |
parents,O | |
and,O | |
12,O | |
of,O | |
21,O | |
unaffected,O | |
siblings,O | |
were,O | |
heterozygous,O | |
for,O | |
this,O | |
mutation,O | |
.,O | |
, | |
It,O | |
was,O | |
absent,O | |
in,O | |
61,O | |
unrelated,O | |
unaffected,O | |
control,O | |
individuals,O | |
.,O | |
, | |
We,O | |
conclude,O | |
that,O | |
the,O | |
codon,O | |
180,O | |
nucleotide,O | |
substitution,O | |
probably,O | |
causes,O | |
Laron,O | |
syndrome,O | |
as,O | |
translation,O | |
of,O | |
the,O | |
observed,O | |
,,O | |
abnormally,O | |
spliced,O | |
growth,O | |
hormone,O | |
receptor,O | |
transcript,O | |
would,O | |
lead,O | |
to,O | |
the,O | |
synthesis,O | |
of,O | |
a,O | |
receptor,O | |
protein,O | |
with,O | |
an,O | |
8,O | |
amino,O | |
acid,O | |
deletion,O | |
from,O | |
the,O | |
extracellular,O | |
domain,O | |
.,O | |
, | |
#19576565 | |
Deficiency,O | |
of,O | |
Dol,O | |
-,O | |
P,O | |
-,O | |
Man,O | |
synthase,O | |
subunit,O | |
DPM3,B-Gene | |
bridges,O | |
the,O | |
congenital,O | |
disorders,O | |
of,O | |
glycosylation,O | |
with,O | |
the,O | |
dystroglycanopathies,O | |
.,O | |
, | |
Alpha,O | |
-,O | |
dystroglycanopathies,O | |
such,O | |
as,O | |
Walker,O | |
Warburg,O | |
syndrome,O | |
represent,O | |
an,O | |
important,O | |
subgroup,O | |
of,O | |
the,O | |
muscular,O | |
dystrophies,O | |
that,O | |
have,O | |
been,O | |
related,O | |
to,O | |
defective,O | |
O,O | |
-,O | |
mannosylation,O | |
of,O | |
alpha,O | |
-,O | |
dystroglycan,O | |
.,O | |
, | |
In,O | |
many,O | |
patients,O | |
,,O | |
the,O | |
underlying,O | |
genetic,O | |
etiology,O | |
remains,O | |
unsolved,O | |
.,O | |
, | |
Isolated,O | |
muscular,O | |
dystrophy,O | |
has,O | |
not,O | |
been,O | |
described,O | |
in,O | |
the,O | |
congenital,O | |
disorders,O | |
of,O | |
glycosylation,O | |
(,O | |
CDG,O | |
),O | |
caused,O | |
by,O | |
N,O | |
-,O | |
linked,O | |
protein,O | |
glycosylation,O | |
defects,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
present,O | |
a,O | |
genetic,O | |
N,O | |
-,O | |
glycosylation,O | |
disorder,O | |
with,O | |
muscular,O | |
dystrophy,O | |
in,O | |
the,O | |
group,O | |
of,O | |
CDG,O | |
type,O | |
I.,O | |
Extensive,O | |
biochemical,O | |
investigations,O | |
revealed,O | |
a,O | |
strongly,O | |
reduced,O | |
dolichol,O | |
-,O | |
phosphate,O | |
-,O | |
mannose,O | |
(,O | |
Dol,O | |
-,O | |
P,O | |
-,O | |
Man,O | |
),O | |
synthase,O | |
activity,O | |
.,O | |
, | |
Sequencing,O | |
of,O | |
the,O | |
three,O | |
DPM,O | |
subunits,O | |
and,O | |
complementation,O | |
of,O | |
DPM3,O | |
-,O | |
deficient,O | |
CHO2.38,O | |
cells,O | |
showed,O | |
a,O | |
pathogenic,O | |
p.,B-SNP | |
L85S,I-SNP | |
missense,O | |
mutation,O | |
in,O | |
the,O | |
strongly,O | |
conserved,O | |
coiled,O | |
-,O | |
coil,O | |
domain,O | |
of,O | |
DPM3,B-Gene | |
that,O | |
tethers,O | |
catalytic,O | |
DPM1,B-Gene | |
to,O | |
the,O | |
ER,O | |
membrane,O | |
.,O | |
, | |
Cotransfection,O | |
experiments,O | |
in,O | |
CHO,O | |
cells,O | |
showed,O | |
a,O | |
reduced,O | |
binding,O | |
capacity,O | |
of,O | |
DPM3(L85S,B-Gene | |
),I-SNP | |
for,O | |
DPM1,B-Gene | |
.,I-Gene | |
, | |
Investigation,O | |
of,O | |
the,O | |
four,O | |
Dol,O | |
-,O | |
P,O | |
-,O | |
Man,O | |
-,O | |
dependent,O | |
glycosylation,O | |
pathways,O | |
in,O | |
the,O | |
ER,O | |
revealed,O | |
strongly,O | |
reduced,O | |
O,O | |
-,O | |
mannosylation,O | |
of,O | |
alpha,O | |
-,O | |
dystroglycan,O | |
in,O | |
a,O | |
muscle,O | |
biopsy,O | |
,,O | |
thereby,O | |
explaining,O | |
the,O | |
clinical,O | |
phenotype,O | |
of,O | |
muscular,O | |
dystrophy,O | |
.,O | |
, | |
This,O | |
mild,O | |
Dol,O | |
-,O | |
P,O | |
-,O | |
Man,O | |
biosynthesis,O | |
defect,O | |
due,O | |
to,O | |
DPM3,B-Gene | |
mutations,O | |
is,O | |
a,O | |
cause,O | |
for,O | |
alpha,O | |
-,O | |
dystroglycanopathy,O | |
,,O | |
thereby,O | |
bridging,O | |
the,O | |
congenital,O | |
disorders,O | |
of,O | |
glycosylation,O | |
with,O | |
the,O | |
dystroglycanopathies,O | |
.,O | |
, | |
#18423522 | |
Estimating,O | |
odds,O | |
ratios,O | |
in,O | |
genome,O | |
scans,O | |
:,O | |
an,O | |
approximate,O | |
conditional,O | |
likelihood,O | |
approach,O | |
.,O | |
, | |
In,O | |
modern,O | |
whole,O | |
-,O | |
genome,O | |
scans,O | |
,,O | |
the,O | |
use,O | |
of,O | |
stringent,O | |
thresholds,O | |
to,O | |
control,O | |
the,O | |
genome,O | |
-,O | |
wide,O | |
testing,O | |
error,O | |
distorts,O | |
the,O | |
estimation,O | |
process,O | |
,,O | |
producing,O | |
estimated,O | |
effect,O | |
sizes,O | |
that,O | |
may,O | |
be,O | |
on,O | |
average,O | |
far,O | |
greater,O | |
in,O | |
magnitude,O | |
than,O | |
the,O | |
true,O | |
effect,O | |
sizes,O | |
.,O | |
, | |
We,O | |
introduce,O | |
a,O | |
method,O | |
,,O | |
based,O | |
on,O | |
the,O | |
estimate,O | |
of,O | |
genetic,O | |
effect,O | |
and,O | |
its,O | |
standard,O | |
error,O | |
as,O | |
reported,O | |
by,O | |
standard,O | |
statistical,O | |
software,O | |
,,O | |
to,O | |
correct,O | |
for,O | |
this,O | |
bias,O | |
in,O | |
case,O | |
-,O | |
control,O | |
association,O | |
studies,O | |
.,O | |
, | |
Our,O | |
approach,O | |
is,O | |
widely,O | |
applicable,O | |
,,O | |
is,O | |
far,O | |
easier,O | |
to,O | |
implement,O | |
than,O | |
competing,O | |
approaches,O | |
,,O | |
and,O | |
may,O | |
often,O | |
be,O | |
applied,O | |
to,O | |
published,O | |
studies,O | |
without,O | |
access,O | |
to,O | |
the,O | |
original,O | |
data,O | |
.,O | |
, | |
We,O | |
evaluate,O | |
the,O | |
performance,O | |
of,O | |
our,O | |
approach,O | |
via,O | |
extensive,O | |
simulations,O | |
for,O | |
a,O | |
range,O | |
of,O | |
genetic,O | |
models,O | |
,,O | |
minor,O | |
allele,O | |
frequencies,O | |
,,O | |
and,O | |
genetic,O | |
effect,O | |
sizes,O | |
.,O | |
, | |
Compared,O | |
to,O | |
the,O | |
naive,O | |
estimation,O | |
procedure,O | |
,,O | |
our,O | |
approach,O | |
reduces,O | |
the,O | |
bias,O | |
and,O | |
the,O | |
mean,O | |
squared,O | |
error,O | |
,,O | |
especially,O | |
for,O | |
modest,O | |
effect,O | |
sizes,O | |
.,O | |
, | |
We,O | |
also,O | |
develop,O | |
a,O | |
principled,O | |
method,O | |
to,O | |
construct,O | |
confidence,O | |
intervals,O | |
for,O | |
the,O | |
genetic,O | |
effect,O | |
that,O | |
acknowledges,O | |
the,O | |
conditioning,O | |
on,O | |
statistical,O | |
significance,O | |
.,O | |
, | |
Our,O | |
approach,O | |
is,O | |
described,O | |
in,O | |
the,O | |
specific,O | |
context,O | |
of,O | |
odds,O | |
ratios,O | |
and,O | |
logistic,O | |
modeling,O | |
but,O | |
is,O | |
more,O | |
widely,O | |
applicable,O | |
.,O | |
, | |
Application,O | |
to,O | |
recently,O | |
published,O | |
data,O | |
sets,O | |
demonstrates,O | |
the,O | |
relevance,O | |
of,O | |
our,O | |
approach,O | |
to,O | |
modern,O | |
genome,O | |
scans,O | |
.,O | |
, | |
#18394579 | |
A,O | |
mutation,O | |
in,O | |
HOXA2,B-Gene | |
is,O | |
responsible,O | |
for,O | |
autosomal,O | |
-,O | |
recessive,O | |
microtia,O | |
in,O | |
an,O | |
Iranian,O | |
family,O | |
.,O | |
, | |
Microtia,O | |
,,O | |
a,O | |
congenital,O | |
deformity,O | |
manifesting,O | |
as,O | |
an,O | |
abnormally,O | |
shaped,O | |
or,O | |
absent,O | |
external,O | |
ear,O | |
,,O | |
occurs,O | |
in,O | |
one,O | |
out,O | |
of,O | |
8,000,O | |
-,O | |
10,000,O | |
births,O | |
.,O | |
, | |
We,O | |
ascertained,O | |
a,O | |
consanguineous,O | |
Iranian,O | |
family,O | |
segregating,O | |
with,O | |
autosomal,O | |
-,O | |
recessive,O | |
bilateral,O | |
microtia,O | |
,,O | |
mixed,O | |
symmetrical,O | |
severe,O | |
to,O | |
profound,O | |
hearing,O | |
impairment,O | |
,,O | |
and,O | |
partial,O | |
cleft,O | |
palate,O | |
.,O | |
, | |
Genome,O | |
-,O | |
wide,O | |
linkage,O | |
analysis,O | |
localized,O | |
the,O | |
responsible,O | |
gene,O | |
to,O | |
chromosome,O | |
7p14.3,O | |
-,O | |
p15.3,O | |
with,O | |
a,O | |
maximum,O | |
multi,O | |
-,O | |
point,O | |
LOD,O | |
score,O | |
of,O | |
4.17,O | |
.,O | |
, | |
In,O | |
this,O | |
region,O | |
,,O | |
homeobox,O | |
genes,O | |
from,O | |
the,O | |
HOXA,O | |
cluster,O | |
were,O | |
the,O | |
most,O | |
interesting,O | |
candidates,O | |
.,O | |
, | |
Subsequent,O | |
DNA,O | |
sequence,O | |
analysis,O | |
of,O | |
the,O | |
HOXA1,B-Gene | |
and,O | |
HOXA2,B-Gene | |
homeobox,O | |
genes,O | |
from,O | |
the,O | |
candidate,O | |
region,O | |
identified,O | |
an,O | |
interesting,O | |
HOXA2,B-Gene | |
homeodomain,O | |
variant,O | |
:,O | |
a,O | |
change,O | |
in,O | |
a,O | |
highly,O | |
conserved,O | |
amino,O | |
acid,O | |
(,B-SNP | |
p.,I-SNP | |
Q186,I-SNP | |
K,I-SNP | |
),I-SNP | |
.,O | |
, | |
The,O | |
variant,O | |
was,O | |
not,O | |
found,O | |
in,O | |
231,O | |
Iranian,O | |
and,O | |
109,O | |
Belgian,O | |
control,O | |
samples,O | |
.,O | |
, | |
The,O | |
critical,O | |
contribution,O | |
of,O | |
HoxA2,B-Gene | |
for,O | |
auditory,O | |
-,O | |
system,O | |
development,O | |
has,O | |
already,O | |
been,O | |
shown,O | |
in,O | |
mouse,O | |
models,O | |
.,O | |
, | |
We,O | |
built,O | |
a,O | |
homology,O | |
model,O | |
to,O | |
predict,O | |
the,O | |
effect,O | |
of,O | |
this,O | |
mutation,O | |
on,O | |
the,O | |
structure,O | |
and,O | |
DNA,O | |
-,O | |
binding,O | |
activity,O | |
of,O | |
the,O | |
homeodomain,O | |
by,O | |
using,O | |
the,O | |
program,O | |
Modeler,O | |
8v2,O | |
.,O | |
, | |
In,O | |
the,O | |
model,O | |
of,O | |
the,O | |
mutant,O | |
homeodomain,O | |
,,O | |
the,O | |
position,O | |
of,O | |
the,O | |
mutant,O | |
lysine,O | |
side,O | |
chain,O | |
is,O | |
consistently,O | |
farther,O | |
away,O | |
from,O | |
a,O | |
nearby,O | |
phosphate,O | |
group,O | |
;,O | |
this,O | |
altered,O | |
position,O | |
results,O | |
in,O | |
the,O | |
loss,O | |
of,O | |
a,O | |
hydrogen,O | |
bond,O | |
and,O | |
affects,O | |
the,O | |
DNA,O | |
-,O | |
binding,O | |
activity,O | |
.,O | |
, | |
#7550228 | |
Detection,O | |
and,O | |
genetic,O | |
analysis,O | |
of,O | |
beta,O | |
-,O | |
thalassemia,O | |
mutations,O | |
by,O | |
competitive,O | |
oligopriming,O | |
.,O | |
, | |
A,O | |
new,O | |
approach,O | |
for,O | |
the,O | |
detection,O | |
of,O | |
beta,O | |
-,O | |
thalassemia,O | |
mutations,O | |
has,O | |
been,O | |
applied,O | |
,,O | |
based,O | |
on,O | |
competitive,O | |
oligonucleotide,O | |
priming,O | |
(,O | |
COP,O | |
),O | |
of,O | |
in,O | |
vitro,O | |
DNA,O | |
amplification,O | |
at,O | |
the,O | |
mutation,O | |
site,O | |
.,O | |
, | |
This,O | |
method,O | |
allows,O | |
genotyping,O | |
of,O | |
the,O | |
template,O | |
DNA,O | |
,,O | |
through,O | |
differential,O | |
labeling,O | |
of,O | |
the,O | |
allele,O | |
-,O | |
specific,O | |
competitive,O | |
oligoprimers,O | |
and,O | |
biotinylation,O | |
of,O | |
the,O | |
common,O | |
reverse,O | |
primer,O | |
.,O | |
, | |
The,O | |
system,O | |
provides,O | |
a,O | |
basis,O | |
for,O | |
rapid,O | |
,,O | |
simple,O | |
,,O | |
and,O | |
reliable,O | |
detection,O | |
of,O | |
the,O | |
numerous,O | |
known,O | |
beta,O | |
-,O | |
thalassemia,O | |
mutations,O | |
,,O | |
revealing,O | |
the,O | |
precise,O | |
nature,O | |
of,O | |
the,O | |
mismatch,O | |
in,O | |
each,O | |
case,O | |
,,O | |
and,O | |
thereby,O | |
facilitating,O | |
the,O | |
molecular,O | |
genetic,O | |
analysis,O | |
of,O | |
the,O | |
disease,O | |
.,O | |
, | |
#7981720 | |
Molecular,O | |
characterization,O | |
of,O | |
a,O | |
DDEI,O | |
melting,O | |
polymorphism,O | |
at,O | |
the,O | |
angiotensin,B-Gene | |
I,I-Gene | |
-,I-Gene | |
converting,I-Gene | |
enzyme,I-Gene | |
(,B-Gene | |
ACE,I-Gene | |
),I-Gene | |
locus,O | |
.,O | |
, | |
#10338100 | |
A,O | |
single,O | |
,,O | |
large,O | |
deletion,O | |
accounts,O | |
for,O | |
all,O | |
the,O | |
beta,O | |
-,O | |
globin,O | |
gene,O | |
mutations,O | |
in,O | |
twenty,O | |
families,O | |
from,O | |
Sabah,O | |
(,O | |
North,O | |
Borneo,O | |
),O | |
,,O | |
Malaysia,O | |
.,O | |
, | |
Mutation,O | |
in,O | |
brief,O | |
no,O | |
.,O | |
240,O | |
.,O | |
, | |
Online,O | |
.,O | |
, | |
Beta,O | |
-,O | |
thalassemia,O | |
major,O | |
is,O | |
one,O | |
of,O | |
the,O | |
commonest,O | |
genetic,O | |
disorders,O | |
in,O | |
South,O | |
-,O | |
East,O | |
Asia,O | |
.,O | |
, | |
The,O | |
spectrum,O | |
of,O | |
beta,O | |
-,O | |
thalassemia,O | |
mutations,O | |
in,O | |
the,O | |
various,O | |
ethnic,O | |
sub,O | |
-,O | |
populations,O | |
on,O | |
the,O | |
island,O | |
of,O | |
Borneo,O | |
is,O | |
unknown,O | |
.,O | |
, | |
We,O | |
studied,O | |
20,O | |
Dusun,O | |
children,O | |
from,O | |
the,O | |
East,O | |
Malaysian,O | |
state,O | |
of,O | |
Sabah,O | |
(,O | |
North,O | |
Borneo,O | |
),O | |
with,O | |
a,O | |
severe,O | |
beta,O | |
-,O | |
thalassemia,O | |
major,O | |
phenotype,O | |
,,O | |
using,O | |
a,O | |
combination,O | |
of,O | |
Southern,O | |
analysis,O | |
,,O | |
polymerase,O | |
chain,O | |
reaction,O | |
analysis,O | |
and,O | |
direct,O | |
sequencing,O | |
.,O | |
, | |
We,O | |
found,O | |
the,O | |
children,O | |
to,O | |
be,O | |
homozygous,O | |
for,O | |
a,O | |
large,O | |
deletion,O | |
,,O | |
which,O | |
has,O | |
a,O | |
5,O | |
',O | |
breakpoint,O | |
at,O | |
position,O | |
-4279,O | |
from,O | |
the,O | |
cap,O | |
site,O | |
of,O | |
the,O | |
beta,O | |
-,O | |
globin,O | |
gene,O | |
(,O | |
HBB,O | |
),O | |
with,O | |
the,O | |
3,O | |
',O | |
breakpoint,O | |
located,O | |
in,O | |
a,O | |
L1,O | |
family,O | |
of,O | |
repetitive,O | |
sequences,O | |
at,O | |
an,O | |
unknown,O | |
distance,O | |
from,O | |
the,O | |
beta,B-Gene | |
-,I-Gene | |
globin,I-Gene | |
gene,O | |
.,O | |
, | |
This,O | |
was,O | |
similar,O | |
to,O | |
a,O | |
recent,O | |
finding,O | |
of,O | |
a,O | |
large,O | |
deletion,O | |
causing,O | |
beta,O | |
-,O | |
thalassemia,O | |
first,O | |
described,O | |
in,O | |
unrelated,O | |
beta,O | |
-,O | |
thalassemia,O | |
heterozygotes,O | |
of,O | |
Filipino,O | |
descent,O | |
.,O | |
, | |
This,O | |
report,O | |
describes,O | |
the,O | |
first,O | |
20,O | |
families,O | |
with,O | |
homozygosity,O | |
of,O | |
the,O | |
deletion,O | |
causing,O | |
a,O | |
severe,O | |
phenotype,O | |
.,O | |
, | |
It,O | |
provides,O | |
the,O | |
first,O | |
information,O | |
on,O | |
the,O | |
molecular,O | |
epidemiology,O | |
of,O | |
beta,O | |
-,O | |
thalassemia,O | |
in,O | |
Sabah,O | |
.,O | |
, | |
This,O | |
finding,O | |
has,O | |
implications,O | |
for,O | |
the,O | |
population,O | |
genetics,O | |
and,O | |
preventative,O | |
strategies,O | |
for,O | |
beta,O | |
-,O | |
thalassemia,O | |
major,O | |
for,O | |
nearly,O | |
300,O | |
million,O | |
individuals,O | |
in,O | |
South,O | |
-,O | |
East,O | |
Asia,O | |
.,O | |
, | |
#17924341 | |
Fine,O | |
mapping,O | |
versus,O | |
replication,O | |
in,O | |
whole,O | |
-,O | |
genome,O | |
association,O | |
studies,O | |
.,O | |
, | |
Association,O | |
replication,O | |
studies,O | |
have,O | |
a,O | |
poor,O | |
track,O | |
record,O | |
and,O | |
,,O | |
even,O | |
when,O | |
successful,O | |
,,O | |
often,O | |
claim,O | |
association,O | |
with,O | |
different,O | |
markers,O | |
,,O | |
alleles,O | |
,,O | |
and,O | |
phenotypes,O | |
than,O | |
those,O | |
reported,O | |
in,O | |
the,O | |
primary,O | |
study,O | |
.,O | |
, | |
It,O | |
is,O | |
unknown,O | |
whether,O | |
these,O | |
outcomes,O | |
reflect,O | |
genuine,O | |
associations,O | |
or,O | |
false,O | |
-,O | |
positive,O | |
results,O | |
.,O | |
, | |
A,O | |
greater,O | |
understanding,O | |
of,O | |
these,O | |
observations,O | |
is,O | |
essential,O | |
for,O | |
genomewide,O | |
association,O | |
(,O | |
GWA,O | |
),O | |
studies,O | |
,,O | |
since,O | |
they,O | |
have,O | |
the,O | |
potential,O | |
to,O | |
identify,O | |
multiple,O | |
new,O | |
associations,O | |
that,O | |
that,O | |
will,O | |
require,O | |
external,O | |
validation,O | |
.,O | |
, | |
Theoretically,O | |
,,O | |
a,O | |
repeat,O | |
association,O | |
with,O | |
precisely,O | |
the,O | |
same,O | |
variant,O | |
in,O | |
an,O | |
independent,O | |
sample,O | |
is,O | |
the,O | |
gold,O | |
standard,O | |
for,O | |
replication,O | |
,,O | |
but,O | |
testing,O | |
additional,O | |
variants,O | |
is,O | |
commonplace,O | |
in,O | |
replication,O | |
studies,O | |
.,O | |
, | |
Finding,O | |
different,O | |
associated,O | |
SNPs,O | |
within,O | |
the,O | |
same,O | |
gene,O | |
or,O | |
region,O | |
as,O | |
that,O | |
originally,O | |
identified,O | |
is,O | |
often,O | |
reported,O | |
as,O | |
confirmatory,O | |
evidence,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
compare,O | |
the,O | |
probability,O | |
of,O | |
replicating,O | |
a,O | |
gene,O | |
or,O | |
region,O | |
under,O | |
two,O | |
commonly,O | |
used,O | |
marker,O | |
-,O | |
selection,O | |
strategies,O | |
:,O | |
an,O | |
",O | |
exact,O | |
",O | |
approach,O | |
that,O | |
involves,O | |
only,O | |
the,O | |
originally,O | |
significant,O | |
markers,O | |
and,O | |
a,O | |
",O | |
local,O | |
",O | |
approach,O | |
that,O | |
involves,O | |
both,O | |
the,O | |
originally,O | |
significant,O | |
markers,O | |
and,O | |
others,O | |
in,O | |
the,O | |
same,O | |
region,O | |
.,O | |
, | |
When,O | |
a,O | |
region,O | |
of,O | |
high,O | |
intermarker,O | |
linkage,O | |
disequilibrium,O | |
is,O | |
tested,O | |
to,O | |
replicate,O | |
an,O | |
initial,O | |
finding,O | |
that,O | |
is,O | |
only,O | |
weak,O | |
association,O | |
with,O | |
disease,O | |
,,O | |
the,O | |
local,O | |
approach,O | |
is,O | |
a,O | |
good,O | |
strategy,O | |
.,O | |
, | |
Otherwise,O | |
,,O | |
the,O | |
most,O | |
powerful,O | |
and,O | |
efficient,O | |
strategy,O | |
for,O | |
replication,O | |
involves,O | |
testing,O | |
only,O | |
the,O | |
initially,O | |
identified,O | |
variants,O | |
.,O | |
, | |
Association,O | |
with,O | |
a,O | |
marker,O | |
other,O | |
than,O | |
that,O | |
originally,O | |
identified,O | |
can,O | |
occur,O | |
frequently,O | |
,,O | |
even,O | |
in,O | |
the,O | |
presence,O | |
of,O | |
real,O | |
effects,O | |
in,O | |
a,O | |
low,O | |
-,O | |
powered,O | |
replication,O | |
study,O | |
,,O | |
and,O | |
instances,O | |
of,O | |
such,O | |
association,O | |
increase,O | |
as,O | |
the,O | |
number,O | |
of,O | |
included,O | |
variants,O | |
increases,O | |
.,O | |
, | |
Our,O | |
results,O | |
provide,O | |
a,O | |
basis,O | |
for,O | |
the,O | |
design,O | |
and,O | |
interpretation,O | |
of,O | |
GWA,O | |
replication,O | |
studies,O | |
and,O | |
point,O | |
to,O | |
the,O | |
importance,O | |
of,O | |
a,O | |
clear,O | |
distinction,O | |
between,O | |
fine,O | |
mapping,O | |
and,O | |
replication,O | |
after,O | |
GWA,O | |
.,O | |
, | |
#20021999 | |
Loss,O | |
-,O | |
of,O | |
-,O | |
function,O | |
mutations,O | |
in,O | |
the,O | |
PRPS1,B-Gene | |
gene,O | |
cause,O | |
a,O | |
type,O | |
of,O | |
nonsyndromic,O | |
X,O | |
-,O | |
linked,O | |
sensorineural,O | |
deafness,O | |
,,O | |
DFN2,O | |
.,O | |
, | |
We,O | |
report,O | |
a,O | |
large,O | |
Chinese,O | |
family,O | |
with,O | |
X,O | |
-,O | |
linked,O | |
postlingual,O | |
nonsyndromic,O | |
hearing,O | |
impairment,O | |
in,O | |
which,O | |
the,O | |
critical,O | |
linkage,O | |
interval,O | |
spans,O | |
a,O | |
genetic,O | |
distance,O | |
of,O | |
5.41,O | |
cM,O | |
and,O | |
a,O | |
physical,O | |
distance,O | |
of,O | |
15.1,O | |
Mb,O | |
that,O | |
overlaps,O | |
the,O | |
DFN2,O | |
locus,O | |
.,O | |
, | |
Mutation,O | |
screening,O | |
of,O | |
the,O | |
PRPS1,B-Gene | |
gene,O | |
in,O | |
this,O | |
family,O | |
and,O | |
in,O | |
the,O | |
three,O | |
previously,O | |
reported,O | |
DFN2,O | |
families,O | |
identified,O | |
four,O | |
different,O | |
missense,O | |
mutations,O | |
in,O | |
PRPS1,B-Gene | |
.,I-Gene | |
, | |
These,O | |
mutations,O | |
result,O | |
in,O | |
a,O | |
loss,O | |
of,O | |
phosphoribosyl,O | |
pyrophosphate,O | |
(,O | |
PRPP,O | |
),O | |
synthetase,O | |
1,O | |
activity,O | |
,,O | |
as,O | |
was,O | |
shown,O | |
in,O | |
silico,O | |
by,O | |
structural,O | |
analysis,O | |
and,O | |
was,O | |
shown,O | |
in,O | |
vitro,O | |
by,O | |
enzymatic,O | |
activity,O | |
assays,O | |
in,O | |
erythrocytes,O | |
and,O | |
fibroblasts,O | |
from,O | |
patients,O | |
.,O | |
, | |
By,O | |
in,O | |
situ,O | |
hybridization,O | |
,,O | |
we,O | |
demonstrate,O | |
expression,O | |
of,O | |
Prps1,B-Gene | |
in,O | |
murine,O | |
vestibular,O | |
and,O | |
cochlea,O | |
hair,O | |
cells,O | |
,,O | |
with,O | |
continuous,O | |
expression,O | |
in,O | |
hair,O | |
cells,O | |
and,O | |
postnatal,O | |
expression,O | |
in,O | |
the,O | |
spiral,O | |
ganglion,O | |
.,O | |
, | |
Being,O | |
the,O | |
second,O | |
identified,O | |
gene,O | |
associated,O | |
with,O | |
X,O | |
-,O | |
linked,O | |
nonsyndromic,O | |
deafness,O | |
,,O | |
PRPS1,B-Gene | |
will,O | |
be,O | |
a,O | |
good,O | |
candidate,O | |
gene,O | |
for,O | |
genetic,O | |
testing,O | |
for,O | |
X,O | |
-,O | |
linked,O | |
nonsyndromic,O | |
hearing,O | |
loss,O | |
.,O | |
, | |
#14610717 | |
Allelic,O | |
heterogeneity,O | |
in,O | |
LINE-1,O | |
retrotransposition,O | |
activity,O | |
.,O | |
, | |
De,O | |
novo,O | |
LINE-1,O | |
(,O | |
long,O | |
interspersed,O | |
element-1,O | |
,,O | |
or,O | |
L1,O | |
),O | |
retrotransposition,O | |
events,O | |
are,O | |
responsible,O | |
for,O | |
approximately,O | |
1/1,000,O | |
disease,O | |
-,O | |
causing,O | |
mutations,O | |
in,O | |
humans,O | |
.,O | |
, | |
Previously,O | |
,,O | |
L1.2,O | |
was,O | |
identified,O | |
as,O | |
the,O | |
likely,O | |
progenitor,O | |
of,O | |
a,O | |
mutagenic,O | |
insertion,O | |
in,O | |
the,O | |
factor,O | |
VIII,O | |
gene,O | |
in,O | |
a,O | |
patient,O | |
with,O | |
hemophilia,O | |
A.,O | |
It,O | |
subsequently,O | |
was,O | |
shown,O | |
to,O | |
be,O | |
one,O | |
of,O | |
a,O | |
small,O | |
number,O | |
of,O | |
active,O | |
L1s,O | |
in,O | |
the,O | |
human,O | |
genome,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
demonstrate,O | |
that,O | |
L1.2,O | |
is,O | |
present,O | |
at,O | |
an,O | |
intermediate,O | |
insertion,O | |
allele,O | |
frequency,O | |
in,O | |
worldwide,O | |
human,O | |
populations,O | |
and,O | |
that,O | |
common,O | |
alleles,O | |
(,O | |
L1.2A,O | |
and,O | |
L1.2B,O | |
),O | |
exhibit,O | |
an,O | |
approximately,O | |
16,O | |
-,O | |
fold,O | |
difference,O | |
in,O | |
their,O | |
ability,O | |
to,O | |
retrotranspose,O | |
in,O | |
cultured,O | |
human,O | |
HeLa,O | |
cells,O | |
.,O | |
, | |
Chimera,O | |
analysis,O | |
revealed,O | |
that,O | |
two,O | |
amino,O | |
acid,O | |
substitutions,O | |
(,B-SNP | |
S1259L,I-SNP | |
and,O | |
I1220,B-SNP | |
M,I-SNP | |
),I-SNP | |
downstream,O | |
of,O | |
the,O | |
conserved,O | |
cysteine,O | |
-,O | |
rich,O | |
motif,O | |
in,O | |
L1,O | |
open,O | |
reading,O | |
frame,O | |
2,O | |
are,O | |
largely,O | |
responsible,O | |
for,O | |
the,O | |
observed,O | |
reduction,O | |
in,O | |
L1.2A,O | |
retrotransposition,O | |
efficiency,O | |
.,O | |
, | |
Thus,O | |
,,O | |
common,O | |
L1,O | |
alleles,O | |
can,O | |
vary,O | |
widely,O | |
in,O | |
their,O | |
retrotransposition,O | |
potential,O | |
.,O | |
, | |
We,O | |
propose,O | |
that,O | |
such,O | |
allelic,O | |
heterogeneity,O | |
can,O | |
influence,O | |
the,O | |
potential,O | |
L1,O | |
mutational,O | |
load,O | |
present,O | |
in,O | |
an,O | |
individual,O | |
genome,O | |
.,O | |
, | |
#20466092 | |
The,O | |
number,O | |
of,O | |
markers,O | |
in,O | |
the,O | |
HapMap,O | |
project,O | |
:,O | |
some,O | |
notes,O | |
on,O | |
chi,O | |
-,O | |
square,O | |
and,O | |
exact,O | |
tests,O | |
for,O | |
Hardy,O | |
-,O | |
Weinberg,O | |
equilibrium,O | |
.,O | |
, | |
#19012875 | |
Divergence,O | |
between,O | |
human,O | |
populations,O | |
estimated,O | |
from,O | |
linkage,O | |
disequilibrium,O | |
.,O | |
, | |
Observed,O | |
linkage,O | |
disequilibrium,O | |
(,O | |
LD,O | |
),O | |
between,O | |
genetic,O | |
markers,O | |
in,O | |
different,O | |
populations,O | |
descended,O | |
independently,O | |
from,O | |
a,O | |
common,O | |
ancestral,O | |
population,O | |
can,O | |
be,O | |
used,O | |
to,O | |
estimate,O | |
their,O | |
absolute,O | |
time,O | |
of,O | |
divergence,O | |
,,O | |
because,O | |
the,O | |
correlation,O | |
of,O | |
LD,O | |
between,O | |
populations,O | |
will,O | |
be,O | |
reduced,O | |
each,O | |
generation,O | |
by,O | |
an,O | |
amount,O | |
that,O | |
,,O | |
approximately,O | |
,,O | |
depends,O | |
only,O | |
on,O | |
the,O | |
recombination,O | |
rate,O | |
between,O | |
markers,O | |
.,O | |
, | |
Although,O | |
drift,O | |
leads,O | |
to,O | |
divergence,O | |
in,O | |
allele,O | |
frequencies,O | |
,,O | |
it,O | |
has,O | |
less,O | |
effect,O | |
on,O | |
divergence,O | |
in,O | |
LD,O | |
values,O | |
.,O | |
, | |
We,O | |
derived,O | |
the,O | |
relationship,O | |
between,O | |
LD,O | |
and,O | |
time,O | |
of,O | |
divergence,O | |
and,O | |
verified,O | |
it,O | |
with,O | |
coalescent,O | |
simulations,O | |
.,O | |
, | |
We,O | |
then,O | |
used,O | |
HapMap,O | |
Phase,O | |
II,O | |
data,O | |
to,O | |
estimate,O | |
time,O | |
of,O | |
divergence,O | |
between,O | |
human,O | |
populations,O | |
.,O | |
, | |
Summed,O | |
over,O | |
large,O | |
numbers,O | |
of,O | |
pairs,O | |
of,O | |
loci,O | |
,,O | |
we,O | |
find,O | |
a,O | |
positive,O | |
correlation,O | |
of,O | |
LD,O | |
between,O | |
African,O | |
and,O | |
non,O | |
-,O | |
African,O | |
populations,O | |
at,O | |
levels,O | |
of,O | |
up,O | |
to,O | |
approximately,O | |
0.3,O | |
cM.,O | |
, | |
We,O | |
estimate,O | |
that,O | |
the,O | |
observed,O | |
correlation,O | |
of,O | |
LD,O | |
is,O | |
consistent,O | |
with,O | |
an,O | |
effective,O | |
separation,O | |
time,O | |
of,O | |
approximately,O | |
1,000,O | |
generations,O | |
or,O | |
approximately,O | |
25,000,O | |
years,O | |
before,O | |
present,O | |
.,O | |
, | |
The,O | |
most,O | |
likely,O | |
explanation,O | |
for,O | |
such,O | |
relatively,O | |
low,O | |
separation,O | |
times,O | |
is,O | |
the,O | |
existence,O | |
of,O | |
substantial,O | |
levels,O | |
of,O | |
migration,O | |
between,O | |
populations,O | |
after,O | |
the,O | |
initial,O | |
separation,O | |
.,O | |
, | |
Theory,O | |
and,O | |
results,O | |
from,O | |
coalescent,O | |
simulations,O | |
confirm,O | |
that,O | |
low,O | |
levels,O | |
of,O | |
migration,O | |
can,O | |
lead,O | |
to,O | |
a,O | |
downward,O | |
bias,O | |
in,O | |
the,O | |
estimate,O | |
of,O | |
separation,O | |
time,O | |
.,O | |
, | |
#10090915 | |
Prevalence,O | |
of,O | |
Bloom,O | |
syndrome,O | |
heterozygotes,O | |
among,O | |
Ashkenazi,O | |
Jews,O | |
.,O | |
, | |
#15359380 | |
Genetic,O | |
variation,O | |
in,O | |
radiation,O | |
-,O | |
induced,O | |
expression,O | |
phenotypes,O | |
.,O | |
, | |
Studies,O | |
have,O | |
demonstrated,O | |
that,O | |
natural,O | |
variation,O | |
in,O | |
the,O | |
expression,O | |
level,O | |
of,O | |
genes,O | |
at,O | |
baseline,O | |
is,O | |
extensive,O | |
,,O | |
and,O | |
the,O | |
determinants,O | |
of,O | |
this,O | |
variation,O | |
can,O | |
be,O | |
mapped,O | |
by,O | |
a,O | |
genetic,O | |
-,O | |
linkage,O | |
approach,O | |
.,O | |
, | |
In,O | |
this,O | |
study,O | |
,,O | |
we,O | |
used,O | |
lymphoblastoid,O | |
cells,O | |
to,O | |
explore,O | |
the,O | |
variation,O | |
in,O | |
radiation,O | |
-,O | |
induced,O | |
transcriptional,O | |
changes,O | |
.,O | |
, | |
We,O | |
found,O | |
that,O | |
,,O | |
among,O | |
normal,O | |
individuals,O | |
,,O | |
there,O | |
is,O | |
extensive,O | |
variation,O | |
in,O | |
transcriptional,O | |
response,O | |
to,O | |
radiation,O | |
exposure,O | |
.,O | |
, | |
By,O | |
studying,O | |
monozygotic,O | |
twins,O | |
,,O | |
we,O | |
demonstrated,O | |
that,O | |
there,O | |
is,O | |
evidence,O | |
of,O | |
a,O | |
heritable,O | |
component,O | |
to,O | |
this,O | |
variation,O | |
.,O | |
, | |
The,O | |
postradiation,O | |
variation,O | |
in,O | |
the,O | |
expression,O | |
level,O | |
of,O | |
several,O | |
genes,O | |
,,O | |
including,O | |
the,O | |
ferredoxin,B-Gene | |
reductase,I-Gene | |
gene,O | |
(,B-Gene | |
FDXR,I-Gene | |
),I-Gene | |
and,O | |
the,O | |
cyclin,B-Gene | |
-,I-Gene | |
dependent,I-Gene | |
kinase,I-Gene | |
inhibitor,I-Gene | |
1A,I-Gene | |
gene,O | |
(,B-Gene | |
CDKN1A,I-Gene | |
),I-Gene | |
,,O | |
is,O | |
significantly,O | |
greater,O | |
(,O | |
P<.001,O | |
),O | |
among,O | |
twin,O | |
pairs,O | |
than,O | |
within,O | |
twin,O | |
pairs,O | |
.,O | |
, | |
The,O | |
induction,O | |
of,O | |
FDXR,B-Gene | |
by,O | |
radiation,O | |
showed,O | |
a,O | |
bimodal,O | |
distribution,O | |
.,O | |
, | |
Our,O | |
findings,O | |
have,O | |
important,O | |
implications,O | |
for,O | |
understanding,O | |
the,O | |
genetic,O | |
basis,O | |
of,O | |
radiation,O | |
response,O | |
,,O | |
which,O | |
has,O | |
remained,O | |
largely,O | |
unknown,O | |
due,O | |
to,O | |
the,O | |
lack,O | |
of,O | |
family,O | |
material,O | |
needed,O | |
for,O | |
genetic,O | |
studies,O | |
.,O | |
, | |
Our,O | |
approach,O | |
,,O | |
which,O | |
uses,O | |
expression,O | |
phenotypes,O | |
in,O | |
cell,O | |
lines,O | |
,,O | |
allows,O | |
us,O | |
to,O | |
expose,O | |
cells,O | |
from,O | |
family,O | |
members,O | |
to,O | |
radiation,O | |
.,O | |
, | |
Similar,O | |
study,O | |
design,O | |
can,O | |
be,O | |
applied,O | |
to,O | |
dissect,O | |
the,O | |
genetic,O | |
basis,O | |
of,O | |
other,O | |
complex,O | |
human,O | |
traits,O | |
.,O | |
, | |
#16826523 | |
Submicroscopic,O | |
deletion,O | |
in,O | |
patients,O | |
with,O | |
Williams,O | |
-,O | |
Beuren,O | |
syndrome,O | |
influences,O | |
expression,O | |
levels,O | |
of,O | |
the,O | |
nonhemizygous,O | |
flanking,O | |
genes,O | |
.,O | |
, | |
Genomic,O | |
imbalance,O | |
is,O | |
a,O | |
common,O | |
cause,O | |
of,O | |
phenotypic,O | |
abnormalities,O | |
.,O | |
, | |
We,O | |
measured,O | |
the,O | |
relative,O | |
expression,O | |
level,O | |
of,O | |
genes,O | |
that,O | |
map,O | |
within,O | |
the,O | |
microdeletion,O | |
that,O | |
causes,O | |
Williams,O | |
-,O | |
Beuren,O | |
syndrome,O | |
and,O | |
within,O | |
its,O | |
flanking,O | |
regions,O | |
.,O | |
, | |
We,O | |
found,O | |
,,O | |
unexpectedly,O | |
,,O | |
that,O | |
not,O | |
only,O | |
hemizygous,O | |
genes,O | |
but,O | |
also,O | |
normal,O | |
-,O | |
copy,O | |
neighboring,O | |
genes,O | |
show,O | |
decreased,O | |
relative,O | |
levels,O | |
of,O | |
expression,O | |
.,O | |
, | |
Our,O | |
results,O | |
suggest,O | |
that,O | |
not,O | |
only,O | |
the,O | |
aneuploid,O | |
genes,O | |
but,O | |
also,O | |
the,O | |
flanking,O | |
genes,O | |
that,O | |
map,O | |
several,O | |
megabases,O | |
away,O | |
from,O | |
a,O | |
genomic,O | |
rearrangement,O | |
should,O | |
be,O | |
considered,O | |
possible,O | |
contributors,O | |
to,O | |
the,O | |
phenotypic,O | |
variation,O | |
in,O | |
genomic,O | |
disorders,O | |
.,O | |
, | |
#15449241 | |
Family,O | |
-,O | |
based,O | |
association,O | |
study,O | |
of,O | |
synapsin,B-Gene | |
II,I-Gene | |
and,O | |
schizophrenia,O | |
.,O | |
, | |
Synapsin,B-Gene | |
II,I-Gene | |
has,O | |
been,O | |
proposed,O | |
as,O | |
a,O | |
candidate,O | |
gene,O | |
for,O | |
vulnerability,O | |
to,O | |
schizophrenia,O | |
on,O | |
the,O | |
basis,O | |
of,O | |
its,O | |
function,O | |
and,O | |
its,O | |
location,O | |
in,O | |
a,O | |
region,O | |
of,O | |
the,O | |
genome,O | |
implicated,O | |
by,O | |
linkage,O | |
studies,O | |
in,O | |
families,O | |
with,O | |
schizophrenia,O | |
.,O | |
, | |
We,O | |
recently,O | |
reported,O | |
positive,O | |
association,O | |
of,O | |
synapsin,B-Gene | |
II,I-Gene | |
with,O | |
schizophrenia,O | |
in,O | |
a,O | |
case,O | |
-,O | |
control,O | |
study,O | |
(,O | |
Chen,O | |
et,O | |
al,O | |
.,O | |
2004,O | |
),O | |
.,O | |
, | |
However,O | |
,,O | |
since,O | |
case,O | |
-,O | |
control,O | |
analyses,O | |
can,O | |
generate,O | |
false,O | |
-,O | |
positive,O | |
results,O | |
in,O | |
the,O | |
presence,O | |
of,O | |
minor,O | |
degrees,O | |
of,O | |
population,O | |
stratification,O | |
,,O | |
we,O | |
have,O | |
performed,O | |
a,O | |
replication,O | |
study,O | |
in,O | |
366,O | |
additional,O | |
Han,O | |
Chinese,O | |
probands,O | |
and,O | |
their,O | |
parents,O | |
by,O | |
use,O | |
of,O | |
analyses,O | |
of,O | |
transmission,O | |
/,O | |
disequilibrium,O | |
for,O | |
three,O | |
in,O | |
/,O | |
del,O | |
markers,O | |
and,O | |
three,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphisms,O | |
.,O | |
, | |
Positive,O | |
association,O | |
was,O | |
observed,O | |
for,O | |
rs2307981,O | |
(,O | |
P,O | |
=,O | |
.02,O | |
),O | |
,,O | |
rs2308169,O | |
(,O | |
P,O | |
=,O | |
.005,O | |
),O | |
,,O | |
rs308963,O | |
(,O | |
P,O | |
=,O | |
.002,O | |
),O | |
,,O | |
rs795009,O | |
(,O | |
P,O | |
=,O | |
.02,O | |
),O | |
,,O | |
and,O | |
rs2307973,O | |
(,O | |
P,O | |
=,O | |
.02,O | |
),O | |
.,O | |
, | |
For,O | |
transmission,O | |
of,O | |
six,O | |
-,O | |
marker,O | |
haplotypes,O | |
,,O | |
the,O | |
global,O | |
P,O | |
value,O | |
was.0000016,O | |
(,O | |
5,O | |
degrees,O | |
of,O | |
freedom,O | |
),O | |
,,O | |
principally,O | |
because,O | |
of,O | |
overtransmission,O | |
of,O | |
the,O | |
most,O | |
common,O | |
haplotype,O | |
,,O | |
CAA/-/G,O | |
/,O | |
T,O | |
/,O | |
C/-,O | |
(,O | |
frequency,O | |
53.6,O | |
%,O | |
;,O | |
chi,O | |
(,O | |
2,O | |
),O | |
=,O | |
20.8,O | |
;,O | |
P,O | |
=,O | |
.0000051,O | |
),O | |
.,O | |
, | |
This,O | |
confirms,O | |
our,O | |
previous,O | |
study,O | |
and,O | |
provides,O | |
further,O | |
support,O | |
for,O | |
the,O | |
role,O | |
of,O | |
synapsin,B-Gene | |
II,I-Gene | |
variants,O | |
in,O | |
susceptibility,O | |
to,O | |
schizophrenia,O | |
.,O | |
, | |
#14740322 | |
PBAT,O | |
:,O | |
tools,O | |
for,O | |
family,O | |
-,O | |
based,O | |
association,O | |
studies,O | |
.,O | |
, | |
#9452089 | |
3,O | |
',O | |
Acceptor,O | |
splice,O | |
site,O | |
mutation,O | |
in,O | |
intron,O | |
50,O | |
leads,O | |
to,O | |
mild,O | |
Duchenne,O | |
muscular,O | |
dystrophy,O | |
phenotype,O | |
.,O | |
, | |
#18439549 | |
The,O | |
dawn,O | |
of,O | |
human,O | |
matrilineal,O | |
diversity,O | |
.,O | |
, | |
The,O | |
quest,O | |
to,O | |
explain,O | |
demographic,O | |
history,O | |
during,O | |
the,O | |
early,O | |
part,O | |
of,O | |
human,O | |
evolution,O | |
has,O | |
been,O | |
limited,O | |
because,O | |
of,O | |
the,O | |
scarce,O | |
paleoanthropological,O | |
record,O | |
from,O | |
the,O | |
Middle,O | |
Stone,O | |
Age,O | |
.,O | |
, | |
To,O | |
shed,O | |
light,O | |
on,O | |
the,O | |
structure,O | |
of,O | |
the,O | |
mitochondrial,O | |
DNA,O | |
(,O | |
mtDNA,O | |
),O | |
phylogeny,O | |
at,O | |
the,O | |
dawn,O | |
of,O | |
Homo,O | |
sapiens,O | |
,,O | |
we,O | |
constructed,O | |
a,O | |
matrilineal,O | |
tree,O | |
composed,O | |
of,O | |
624,O | |
complete,O | |
mtDNA,O | |
genomes,O | |
from,O | |
sub,O | |
-,O | |
Saharan,O | |
Hg,O | |
L,O | |
lineages,O | |
.,O | |
, | |
We,O | |
paid,O | |
particular,O | |
attention,O | |
to,O | |
the,O | |
Khoi,O | |
and,O | |
San,O | |
(,O | |
Khoisan,O | |
),O | |
people,O | |
of,O | |
South,O | |
Africa,O | |
because,O | |
they,O | |
are,O | |
considered,O | |
to,O | |
be,O | |
a,O | |
unique,O | |
relic,O | |
of,O | |
hunter,O | |
-,O | |
gatherer,O | |
lifestyle,O | |
and,O | |
to,O | |
carry,O | |
paternal,O | |
and,O | |
maternal,O | |
lineages,O | |
belonging,O | |
to,O | |
the,O | |
deepest,O | |
clades,O | |
known,O | |
among,O | |
modern,O | |
humans,O | |
.,O | |
, | |
Both,O | |
the,O | |
tree,O | |
phylogeny,O | |
and,O | |
coalescence,O | |
calculations,O | |
suggest,O | |
that,O | |
Khoisan,O | |
matrilineal,O | |
ancestry,O | |
diverged,O | |
from,O | |
the,O | |
rest,O | |
of,O | |
the,O | |
human,O | |
mtDNA,O | |
pool,O | |
90,000,O | |
-,O | |
150,000,O | |
years,O | |
before,O | |
present,O | |
(,O | |
ybp,O | |
),O | |
and,O | |
that,O | |
at,O | |
least,O | |
five,O | |
additional,O | |
,,O | |
currently,O | |
extant,O | |
maternal,O | |
lineages,O | |
existed,O | |
during,O | |
this,O | |
period,O | |
in,O | |
parallel,O | |
.,O | |
, | |
Furthermore,O | |
,,O | |
we,O | |
estimate,O | |
that,O | |
a,O | |
minimum,O | |
of,O | |
40,O | |
other,O | |
evolutionarily,O | |
successful,O | |
lineages,O | |
flourished,O | |
in,O | |
sub,O | |
-,O | |
Saharan,O | |
Africa,O | |
during,O | |
the,O | |
period,O | |
of,O | |
modern,O | |
human,O | |
dispersal,O | |
out,O | |
of,O | |
Africa,O | |
approximately,O | |
60,000,O | |
-,O | |
70,000,O | |
ybp,O | |
.,O | |
, | |
Only,O | |
much,O | |
later,O | |
,,O | |
at,O | |
the,O | |
beginning,O | |
of,O | |
the,O | |
Late,O | |
Stone,O | |
Age,O | |
,,O | |
about,O | |
40,000,O | |
ybp,O | |
,,O | |
did,O | |
introgression,O | |
of,O | |
additional,O | |
lineages,O | |
occur,O | |
into,O | |
the,O | |
Khoisan,O | |
mtDNA,O | |
pool,O | |
.,O | |
, | |
This,O | |
process,O | |
was,O | |
further,O | |
accelerated,O | |
during,O | |
the,O | |
recent,O | |
Bantu,O | |
expansions,O | |
.,O | |
, | |
Our,O | |
results,O | |
suggest,O | |
that,O | |
the,O | |
early,O | |
settlement,O | |
of,O | |
humans,O | |
in,O | |
Africa,O | |
was,O | |
already,O | |
matrilineally,O | |
structured,O | |
and,O | |
involved,O | |
small,O | |
,,O | |
separately,O | |
evolving,O | |
isolated,O | |
populations,O | |
.,O | |
, | |
#1317992 | |
Increased,O | |
genetic,O | |
instability,O | |
of,O | |
the,O | |
common,O | |
fragile,O | |
site,O | |
at,O | |
3p14,O | |
after,O | |
integration,O | |
of,O | |
exogenous,O | |
DNA,O | |
.,O | |
, | |
We,O | |
determined,O | |
previously,O | |
that,O | |
the,O | |
selectable,O | |
marker,O | |
pSV2neo,O | |
is,O | |
preferentially,O | |
inserted,O | |
into,O | |
chromosomal,O | |
fragile,O | |
sites,O | |
in,O | |
human,O | |
x,O | |
hamster,O | |
hybrid,O | |
cells,O | |
in,O | |
the,O | |
presence,O | |
of,O | |
an,O | |
agent,O | |
(,O | |
aphidicolin,O | |
),O | |
that,O | |
induces,O | |
fragile,O | |
-,O | |
site,O | |
expression,O | |
.,O | |
, | |
In,O | |
contrast,O | |
,,O | |
cells,O | |
transfected,O | |
without,O | |
fragile,O | |
-,O | |
site,O | |
induction,O | |
showed,O | |
an,O | |
essentially,O | |
random,O | |
integration,O | |
pattern,O | |
.,O | |
, | |
To,O | |
determine,O | |
whether,O | |
the,O | |
integration,O | |
of,O | |
marker,O | |
DNA,O | |
at,O | |
fragile,O | |
sites,O | |
affects,O | |
the,O | |
frequency,O | |
of,O | |
fragile,O | |
-,O | |
site,O | |
expression,O | |
,,O | |
the,O | |
parental,O | |
hybrid,O | |
and,O | |
three,O | |
transfectants,O | |
(,O | |
two,O | |
with,O | |
pSV2neo,O | |
integrated,O | |
at,O | |
the,O | |
fragile,O | |
site,O | |
at,O | |
3p14.2,O | |
[,B-Gene | |
FRA3B,I-Gene | |
],I-Gene | |
and,O | |
specific,O | |
hamster,O | |
fragile,O | |
sites,O | |
[,O | |
chromosome,O | |
1,O | |
,,O | |
bands,O | |
q26,O | |
-,O | |
31,O | |
,,O | |
or,O | |
mar2,O | |
,,O | |
bands,O | |
q11,O | |
-,O | |
13,O | |
],O | |
and,O | |
one,O | |
with,O | |
pSV2neo,O | |
integrated,O | |
at,O | |
sites,O | |
that,O | |
are,O | |
not,O | |
fragile,O | |
sites,O | |
),O | |
were,O | |
treated,O | |
with,O | |
aphidicolin,O | |
.,O | |
, | |
After,O | |
24,O | |
h,O | |
the,O | |
two,O | |
cell,O | |
lines,O | |
with,O | |
plasmid,O | |
integration,O | |
at,O | |
FRA3B,B-Gene | |
showed,O | |
structural,O | |
rearrangements,O | |
at,O | |
that,O | |
site,O | |
;,O | |
these,O | |
rearrangements,O | |
accounted,O | |
for,O | |
43%-67,O | |
%,O | |
of,O | |
the,O | |
total,O | |
deletions,O | |
and,O | |
translocations,O | |
observed,O | |
.,O | |
, | |
Structural,O | |
rearrangements,O | |
were,O | |
not,O | |
observed,O | |
in,O | |
the,O | |
parental,O | |
cell,O | |
line,O | |
.,O | |
, | |
After,O | |
5,O | |
d,O | |
aphidicolin,O | |
treatment,O | |
,,O | |
the,O | |
observed,O | |
excess,O | |
in,O | |
frequency,O | |
of,O | |
structural,O | |
rearrangements,O | |
at,O | |
FRA3B,B-Gene | |
in,O | |
the,O | |
cell,O | |
lines,O | |
with,O | |
pSV2neo,O | |
integration,O | |
at,O | |
3p14,O | |
over,O | |
that,O | |
in,O | |
the,O | |
two,O | |
lines,O | |
without,O | |
FRA3B,B-Gene | |
integration,O | |
was,O | |
less,O | |
dramatic,O | |
,,O | |
but,O | |
nonetheless,O | |
significant,O | |
.,O | |
, | |
Fluorescent,O | |
in,O | |
situ,O | |
hybridization,O | |
(,O | |
FISH,O | |
),O | |
analysis,O | |
of,O | |
these,O | |
cells,O | |
,,O | |
using,O | |
a,O | |
biotin,O | |
-,O | |
labeled,O | |
pSV2neo,O | |
probe,O | |
,,O | |
showed,O | |
results,O | |
consistent,O | |
with,O | |
the,O | |
gross,O | |
rearrangements,O | |
detected,O | |
cytogenetically,O | |
in,O | |
the,O | |
lines,O | |
with,O | |
FRA3B,B-Gene | |
integration,O | |
;,O | |
however,O | |
,,O | |
the,O | |
pSV2neo,O | |
sequences,O | |
were,O | |
frequently,O | |
deleted,O | |
concomitantly,O | |
with,O | |
translocations.(ABSTRACT,O | |
TRUNCATED,O | |
AT,O | |
250,O | |
WORDS,O | |
),O | |
, | |
#10775530 | |
Intragenic,O | |
inversion,O | |
of,O | |
mtDNA,O | |
:,O | |
a,O | |
new,O | |
type,O | |
of,O | |
pathogenic,O | |
mutation,O | |
in,O | |
a,O | |
patient,O | |
with,O | |
mitochondrial,O | |
myopathy,O | |
.,O | |
, | |
We,O | |
report,O | |
an,O | |
unusual,O | |
molecular,O | |
defect,O | |
in,O | |
the,O | |
mitochondrially,O | |
encoded,O | |
ND1,B-Gene | |
subunit,O | |
of,O | |
NADH,O | |
ubiquinone,O | |
oxidoreductase,O | |
(,O | |
complex,O | |
I,O | |
),O | |
in,O | |
a,O | |
patient,O | |
with,O | |
mitochondrial,O | |
myopathy,O | |
and,O | |
isolated,O | |
complex,O | |
I,O | |
deficiency,O | |
.,O | |
, | |
The,O | |
mutation,O | |
is,O | |
an,O | |
inversion,O | |
of,O | |
seven,O | |
nucleotides,O | |
within,O | |
the,O | |
ND1,B-Gene | |
gene,O | |
,,O | |
which,O | |
maintains,O | |
the,O | |
reading,O | |
frame,O | |
.,O | |
, | |
The,O | |
inversion,O | |
,,O | |
which,O | |
alters,O | |
three,O | |
highly,O | |
conserved,O | |
amino,O | |
acids,O | |
in,O | |
the,O | |
polypeptide,O | |
,,O | |
was,O | |
heteroplasmic,O | |
in,O | |
the,O | |
patient,O | |
's,O | |
muscle,O | |
but,O | |
was,O | |
not,O | |
detectable,O | |
in,O | |
blood,O | |
.,O | |
, | |
This,O | |
is,O | |
the,O | |
first,O | |
report,O | |
of,O | |
a,O | |
pathogenic,O | |
inversion,O | |
mutation,O | |
in,O | |
human,O | |
mtDNA,O | |
.,O | |
, | |
#10677321 | |
A,O | |
coalescent,O | |
approach,O | |
to,O | |
study,O | |
linkage,O | |
disequilibrium,O | |
between,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphisms,O | |
.,O | |
, | |
We,O | |
present,O | |
the,O | |
results,O | |
of,O | |
extensive,O | |
simulations,O | |
that,O | |
emulate,O | |
the,O | |
development,O | |
and,O | |
distribution,O | |
of,O | |
linkage,O | |
disequilibrium,O | |
(,O | |
LD,O | |
),O | |
between,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphisms,O | |
(,O | |
SNPs,O | |
),O | |
and,O | |
a,O | |
gene,O | |
locus,O | |
that,O | |
is,O | |
phenotypically,O | |
stratified,O | |
into,O | |
two,O | |
classes,O | |
(,O | |
disease,O | |
phenotype,O | |
and,O | |
wild,O | |
-,O | |
type,O | |
phenotype,O | |
),O | |
.,O | |
, | |
Our,O | |
approach,O | |
,,O | |
based,O | |
on,O | |
coalescence,O | |
theory,O | |
,,O | |
allows,O | |
an,O | |
explicit,O | |
modeling,O | |
of,O | |
the,O | |
demographic,O | |
history,O | |
of,O | |
the,O | |
population,O | |
without,O | |
conditioning,O | |
on,O | |
the,O | |
age,O | |
of,O | |
the,O | |
mutation,O | |
,,O | |
and,O | |
serves,O | |
as,O | |
an,O | |
efficient,O | |
tool,O | |
to,O | |
carry,O | |
out,O | |
simulations,O | |
.,O | |
, | |
More,O | |
specifically,O | |
,,O | |
we,O | |
compare,O | |
the,O | |
influence,O | |
that,O | |
a,O | |
constant,O | |
population,O | |
size,O | |
or,O | |
an,O | |
exponentially,O | |
growing,O | |
population,O | |
has,O | |
on,O | |
the,O | |
amount,O | |
of,O | |
LD,O | |
.,O | |
, | |
These,O | |
results,O | |
indicate,O | |
that,O | |
attempts,O | |
to,O | |
locate,O | |
single,O | |
disease,O | |
genes,O | |
are,O | |
most,O | |
likely,O | |
successful,O | |
in,O | |
small,O | |
and,O | |
constant,O | |
populations,O | |
.,O | |
, | |
On,O | |
the,O | |
other,O | |
hand,O | |
,,O | |
if,O | |
we,O | |
consider,O | |
an,O | |
exponentially,O | |
growing,O | |
population,O | |
that,O | |
started,O | |
to,O | |
expand,O | |
from,O | |
an,O | |
initially,O | |
constant,O | |
population,O | |
of,O | |
reasonable,O | |
size,O | |
,,O | |
then,O | |
our,O | |
simulations,O | |
indicate,O | |
a,O | |
lower,O | |
success,O | |
rate,O | |
.,O | |
, | |
The,O | |
power,O | |
to,O | |
detect,O | |
association,O | |
is,O | |
enhanced,O | |
if,O | |
haplotypes,O | |
constructed,O | |
from,O | |
several,O | |
SNPs,O | |
are,O | |
used,O | |
as,O | |
markers,O | |
.,O | |
, | |
The,O | |
versatility,O | |
of,O | |
the,O | |
coalescence,O | |
approach,O | |
also,O | |
allows,O | |
the,O | |
analysis,O | |
of,O | |
other,O | |
relevant,O | |
factors,O | |
that,O | |
influence,O | |
the,O | |
chances,O | |
that,O | |
a,O | |
disease,O | |
gene,O | |
will,O | |
be,O | |
located,O | |
.,O | |
, | |
We,O | |
show,O | |
that,O | |
several,O | |
alleles,O | |
leading,O | |
to,O | |
the,O | |
same,O | |
disease,O | |
have,O | |
no,O | |
substantial,O | |
influence,O | |
on,O | |
the,O | |
amount,O | |
of,O | |
LD,O | |
,,O | |
as,O | |
long,O | |
as,O | |
the,O | |
differences,O | |
between,O | |
the,O | |
disease,O | |
-,O | |
causing,O | |
alleles,O | |
are,O | |
confined,O | |
to,O | |
the,O | |
same,O | |
region,O | |
of,O | |
the,O | |
gene,O | |
locus,O | |
and,O | |
as,O | |
long,O | |
as,O | |
each,O | |
allele,O | |
occurs,O | |
in,O | |
an,O | |
appreciable,O | |
frequency,O | |
.,O | |
, | |
Our,O | |
simulations,O | |
indicate,O | |
that,O | |
mapping,O | |
of,O | |
less,O | |
-,O | |
frequent,O | |
diseases,O | |
is,O | |
more,O | |
likely,O | |
to,O | |
be,O | |
successful,O | |
.,O | |
, | |
Moreover,O | |
,,O | |
we,O | |
show,O | |
that,O | |
successful,O | |
attempts,O | |
to,O | |
map,O | |
complex,O | |
diseases,O | |
depend,O | |
crucially,O | |
on,O | |
the,O | |
phenotype,O | |
-,O | |
genotype,O | |
correlations,O | |
of,O | |
all,O | |
alleles,O | |
at,O | |
the,O | |
disease,O | |
locus,O | |
.,O | |
, | |
An,O | |
analysis,O | |
of,O | |
lipoprotein,O | |
lipase,O | |
data,O | |
indicates,O | |
that,O | |
our,O | |
simulations,O | |
capture,O | |
the,O | |
major,O | |
features,O | |
of,O | |
LD,O | |
occurring,O | |
in,O | |
biological,O | |
data,O | |
.,O | |
, | |
#1609795 | |
The,O | |
human,O | |
gene,O | |
encoding,O | |
acetylcholinesterase,B-Gene | |
is,O | |
located,O | |
on,O | |
the,O | |
long,O | |
arm,O | |
of,O | |
chromosome,O | |
7,O | |
.,O | |
, | |
Acetylcholinesterase,B-Gene | |
(,B-Gene | |
AChE,I-Gene | |
),I-Gene | |
is,O | |
a,O | |
secreted,O | |
enzyme,O | |
essential,O | |
for,O | |
regulating,O | |
cholinergic,O | |
neurotransmission,O | |
at,O | |
neuronal,O | |
and,O | |
neuromuscular,O | |
synapses,O | |
.,O | |
, | |
In,O | |
view,O | |
of,O | |
the,O | |
altered,O | |
expression,O | |
of,O | |
AChE,B-Gene | |
in,O | |
some,O | |
central,O | |
neurological,O | |
and,O | |
neuromuscular,O | |
disorders,O | |
with,O | |
a,O | |
probable,O | |
genetic,O | |
basis,O | |
,,O | |
we,O | |
have,O | |
identified,O | |
the,O | |
chromosomal,O | |
location,O | |
of,O | |
the,O | |
gene,O | |
encoding,O | |
AChE.,B-Gene | |
, | |
Chromosomal,O | |
in,O | |
situ,O | |
suppression,O | |
hybridization,O | |
analysis,O | |
revealed,O | |
a,O | |
single,O | |
gene,O | |
to,O | |
be,O | |
at,O | |
7q22,O | |
,,O | |
a,O | |
result,O | |
which,O | |
was,O | |
confirmed,O | |
by,O | |
PCR,O | |
analysis,O | |
of,O | |
genomic,O | |
DNA,O | |
from,O | |
a,O | |
human,O | |
/,O | |
hamster,O | |
somatic,O | |
cell,O | |
hybrid,O | |
containing,O | |
a,O | |
single,O | |
human,O | |
chromosome,O | |
7,O | |
.,O | |
, | |
The,O | |
AChE,B-Gene | |
gene,O | |
thus,O | |
maps,O | |
to,O | |
the,O | |
same,O | |
region,O | |
in,O | |
which,O | |
frequent,O | |
nonrandom,O | |
chromosome,O | |
7,O | |
deletions,O | |
occur,O | |
in,O | |
leukemias,O | |
of,O | |
myeloid,O | |
cell,O | |
precursors,O | |
known,O | |
to,O | |
express,O | |
the,O | |
enzyme,O | |
during,O | |
normal,O | |
differentiation,O | |
.,O | |
, | |
#11283796 | |
Disruption,O | |
of,O | |
the,O | |
bipartite,O | |
imprinting,O | |
center,O | |
in,O | |
a,O | |
family,O | |
with,O | |
Angelman,O | |
syndrome,O | |
.,O | |
, | |
Imprinting,O | |
in,O | |
15q11,O | |
-,O | |
q13,O | |
is,O | |
controlled,O | |
by,O | |
a,O | |
bipartite,O | |
imprinting,O | |
center,O | |
(,O | |
IC,O | |
),O | |
,,O | |
which,O | |
maps,O | |
to,O | |
the,O | |
SNURF,B-Gene | |
-,I-Gene | |
SNRPN,I-Gene | |
locus,O | |
.,O | |
, | |
Deletions,O | |
of,O | |
the,O | |
exon,O | |
1,O | |
region,O | |
impair,O | |
the,O | |
establishment,O | |
or,O | |
maintenance,O | |
of,O | |
the,O | |
paternal,O | |
imprint,O | |
and,O | |
can,O | |
cause,O | |
Prader,O | |
-,O | |
Willi,O | |
syndrome,O | |
(,O | |
PWS,O | |
),O | |
.,O | |
, | |
Deletions,O | |
of,O | |
a,O | |
region,O | |
35,O | |
kb,O | |
upstream,O | |
of,O | |
exon,O | |
1,O | |
impair,O | |
maternal,O | |
imprinting,O | |
and,O | |
can,O | |
cause,O | |
Angelman,O | |
syndrome,O | |
(,O | |
AS,O | |
),O | |
.,O | |
, | |
So,O | |
far,O | |
,,O | |
in,O | |
all,O | |
affected,O | |
sibs,O | |
with,O | |
an,O | |
imprinting,O | |
defect,O | |
,,O | |
an,O | |
inherited,O | |
IC,O | |
deletion,O | |
was,O | |
identified,O | |
.,O | |
, | |
We,O | |
report,O | |
on,O | |
two,O | |
sibs,O | |
with,O | |
AS,O | |
who,O | |
do,O | |
not,O | |
have,O | |
an,O | |
IC,O | |
deletion,O | |
but,O | |
instead,O | |
have,O | |
a,O | |
1,O | |
-,O | |
1.5,O | |
Mb,O | |
inversion,O | |
separating,O | |
the,O | |
two,O | |
IC,O | |
elements,O | |
.,O | |
, | |
The,O | |
inversion,O | |
is,O | |
transmitted,O | |
silently,O | |
through,O | |
the,O | |
male,O | |
germline,O | |
but,O | |
impairs,O | |
maternal,O | |
imprinting,O | |
after,O | |
transmission,O | |
through,O | |
the,O | |
female,O | |
germline,O | |
.,O | |
, | |
Our,O | |
findings,O | |
suggest,O | |
that,O | |
the,O | |
close,O | |
proximity,O | |
and/or,O | |
the,O | |
correct,O | |
orientation,O | |
of,O | |
the,O | |
two,O | |
IC,O | |
elements,O | |
are,O | |
/,O | |
is,O | |
necessary,O | |
for,O | |
the,O | |
establishment,O | |
of,O | |
a,O | |
maternal,O | |
imprint,O | |
.,O | |
, | |
#14505274 | |
An,O | |
Alu,O | |
transposition,O | |
model,O | |
for,O | |
the,O | |
origin,O | |
and,O | |
expansion,O | |
of,O | |
human,O | |
segmental,O | |
duplications,O | |
.,O | |
, | |
Relative,O | |
to,O | |
genomes,O | |
of,O | |
other,O | |
sequenced,O | |
organisms,O | |
,,O | |
the,O | |
human,O | |
genome,O | |
appears,O | |
particularly,O | |
enriched,O | |
for,O | |
large,O | |
,,O | |
highly,O | |
homologous,O | |
segmental,O | |
duplications,O | |
(,O | |
>,O | |
or,O | |
=,O | |
90,O | |
%,O | |
sequence,O | |
identity,O | |
and,O | |
>,O | |
or,O | |
=,O | |
10,O | |
kbp,O | |
in,O | |
length,O | |
),O | |
.,O | |
, | |
The,O | |
molecular,O | |
basis,O | |
for,O | |
this,O | |
enrichment,O | |
is,O | |
unknown,O | |
.,O | |
, | |
We,O | |
sought,O | |
to,O | |
gain,O | |
insight,O | |
into,O | |
the,O | |
mechanism,O | |
of,O | |
origin,O | |
,,O | |
by,O | |
systematically,O | |
examining,O | |
sequence,O | |
features,O | |
at,O | |
the,O | |
junctions,O | |
of,O | |
duplications,O | |
.,O | |
, | |
We,O | |
analyzed,O | |
9,464,O | |
junctions,O | |
within,O | |
regions,O | |
of,O | |
high,O | |
-,O | |
quality,O | |
finished,O | |
sequence,O | |
from,O | |
a,O | |
genomewide,O | |
set,O | |
of,O | |
2,366,O | |
duplication,O | |
alignments,O | |
.,O | |
, | |
We,O | |
observed,O | |
a,O | |
highly,O | |
significant,O | |
(,O | |
P<.0001,O | |
),O | |
enrichment,O | |
of,O | |
Alu,O | |
short,O | |
interspersed,O | |
element,O | |
(,O | |
SINE,O | |
),O | |
sequences,O | |
near,O | |
or,O | |
within,O | |
the,O | |
junction,O | |
.,O | |
, | |
Twenty,O | |
-,O | |
seven,O | |
percent,O | |
of,O | |
all,O | |
segmental,O | |
duplications,O | |
terminated,O | |
within,O | |
an,O | |
Alu,O | |
repeat,O | |
.,O | |
, | |
The,O | |
Alu,O | |
junction,O | |
enrichment,O | |
was,O | |
most,O | |
pronounced,O | |
for,O | |
interspersed,O | |
segmental,O | |
duplications,O | |
separated,O | |
by,O | |
>,O | |
or,O | |
=,O | |
1,O | |
Mb,O | |
of,O | |
intervening,O | |
sequence,O | |
.,O | |
, | |
Alu,O | |
elements,O | |
at,O | |
the,O | |
junctions,O | |
showed,O | |
higher,O | |
levels,O | |
of,O | |
divergence,O | |
,,O | |
consistent,O | |
with,O | |
Alu,O | |
-,O | |
Alu,O | |
-,O | |
mediated,O | |
recombination,O | |
events,O | |
.,O | |
, | |
When,O | |
we,O | |
classified,O | |
Alu,O | |
elements,O | |
into,O | |
major,O | |
subfamilies,O | |
,,O | |
younger,O | |
elements,O | |
(,O | |
AluY,O | |
and,O | |
AluS,O | |
),O | |
accounted,O | |
for,O | |
the,O | |
enrichment,O | |
,,O | |
whereas,O | |
the,O | |
oldest,O | |
primate,O | |
family,O | |
(,O | |
AluJ,O | |
),O | |
showed,O | |
no,O | |
enrichment,O | |
.,O | |
, | |
We,O | |
propose,O | |
that,O | |
the,O | |
primate,O | |
-,O | |
specific,O | |
burst,O | |
of,O | |
Alu,O | |
retroposition,O | |
activity,O | |
(,O | |
which,O | |
occurred,O | |
35,O | |
-,O | |
40,O | |
million,O | |
years,O | |
ago,O | |
),O | |
sensitized,O | |
the,O | |
ancestral,O | |
human,O | |
genome,O | |
for,O | |
Alu,O | |
-,O | |
Alu,O | |
-,O | |
mediated,O | |
recombination,O | |
events,O | |
,,O | |
which,O | |
,,O | |
in,O | |
turn,O | |
,,O | |
initiated,O | |
the,O | |
expansion,O | |
of,O | |
gene,O | |
-,O | |
rich,O | |
segmental,O | |
duplications,O | |
and,O | |
their,O | |
subsequent,O | |
role,O | |
in,O | |
nonallelic,O | |
homologous,O | |
recombination,O | |
.,O | |
, | |
#15338458 | |
Conventional,O | |
multipoint,O | |
nonparametric,O | |
linkage,O | |
analysis,O | |
is,O | |
not,O | |
necessarily,O | |
inherently,O | |
biased,O | |
.,O | |
, | |
#12900794 | |
A,O | |
full,O | |
-,O | |
likelihood,O | |
method,O | |
for,O | |
the,O | |
evaluation,O | |
of,O | |
causality,O | |
of,O | |
sequence,O | |
variants,O | |
from,O | |
family,O | |
data,O | |
.,O | |
, | |
In,O | |
many,O | |
disease,O | |
genes,O | |
,,O | |
a,O | |
substantial,O | |
fraction,O | |
of,O | |
all,O | |
rare,O | |
variants,O | |
detected,O | |
can,O | |
not,O | |
yet,O | |
be,O | |
used,O | |
for,O | |
genetic,O | |
counselling,O | |
because,O | |
of,O | |
uncertainty,O | |
about,O | |
their,O | |
association,O | |
with,O | |
disease,O | |
.,O | |
, | |
One,O | |
approach,O | |
to,O | |
the,O | |
characterization,O | |
of,O | |
these,O | |
unclassified,O | |
variants,O | |
is,O | |
the,O | |
analysis,O | |
of,O | |
patterns,O | |
of,O | |
cosegregation,O | |
with,O | |
disease,O | |
in,O | |
affected,O | |
carrier,O | |
families,O | |
.,O | |
, | |
Petersen,O | |
et,O | |
al,O | |
.,O | |
, | |
previously,O | |
provided,O | |
a,O | |
simplistic,O | |
Bayesian,O | |
method,O | |
for,O | |
evaluation,O | |
of,O | |
causality,O | |
of,O | |
such,O | |
sequence,O | |
variants,O | |
.,O | |
, | |
In,O | |
the,O | |
present,O | |
report,O | |
,,O | |
we,O | |
propose,O | |
a,O | |
more,O | |
general,O | |
method,O | |
based,O | |
on,O | |
the,O | |
full,O | |
pedigree,O | |
likelihood,O | |
,,O | |
and,O | |
we,O | |
show,O | |
that,O | |
the,O | |
use,O | |
of,O | |
this,O | |
method,O | |
can,O | |
provide,O | |
more,O | |
accurate,O | |
and,O | |
informative,O | |
assessment,O | |
of,O | |
causality,O | |
than,O | |
could,O | |
the,O | |
previous,O | |
method,O | |
.,O | |
, | |
We,O | |
further,O | |
show,O | |
that,O | |
it,O | |
is,O | |
important,O | |
that,O | |
the,O | |
pedigree,O | |
information,O | |
be,O | |
as,O | |
complete,O | |
as,O | |
possible,O | |
and,O | |
that,O | |
the,O | |
distinction,O | |
be,O | |
made,O | |
between,O | |
unaffected,O | |
individuals,O | |
and,O | |
those,O | |
of,O | |
unknown,O | |
phenotype,O | |
.,O | |
, | |
#11438995 | |
Biosensor,O | |
technology,O | |
for,O | |
real,O | |
-,O | |
time,O | |
detection,O | |
of,O | |
the,O | |
cystic,O | |
fibrosis,O | |
W1282X,B-SNP | |
mutation,O | |
in,O | |
CFTR,B-Gene | |
.,I-Gene | |
, | |
In,O | |
the,O | |
present,O | |
paper,O | |
,,O | |
biospecific,O | |
interaction,O | |
analysis,O | |
(,O | |
BIA,O | |
),O | |
was,O | |
performed,O | |
using,O | |
surface,O | |
plasmon,O | |
resonance,O | |
(,O | |
SPR,O | |
),O | |
and,O | |
biosensor,O | |
technologies,O | |
to,O | |
detect,O | |
the,O | |
Trp1282Ter,B-SNP | |
mutation,O | |
(,B-SNP | |
W1282X,I-SNP | |
),I-SNP | |
of,O | |
the,O | |
cystic,B-Gene | |
fibrosis,I-Gene | |
(,I-Gene | |
CF,I-Gene | |
),I-Gene | |
transmembrane,I-Gene | |
conductance,I-Gene | |
regulator,I-Gene | |
(,B-Gene | |
CFTR,I-Gene | |
),I-Gene | |
gene,O | |
.,O | |
, | |
We,O | |
first,O | |
immobilized,O | |
on,O | |
a,O | |
SA5,O | |
sensor,O | |
chip,O | |
a,O | |
single,O | |
-,O | |
stranded,O | |
biotinylated,O | |
oligonucleotide,O | |
containing,O | |
the,O | |
sequence,O | |
involved,O | |
in,O | |
this,O | |
mutation,O | |
,,O | |
and,O | |
the,O | |
efficiency,O | |
of,O | |
hybridization,O | |
of,O | |
oligonucleotide,O | |
probes,O | |
differing,O | |
in,O | |
length,O | |
was,O | |
determined,O | |
.,O | |
, | |
Second,O | |
,,O | |
we,O | |
immobilized,O | |
on,O | |
different,O | |
SA5,O | |
sensor,O | |
chips,O | |
biotinylated,O | |
polymerase,O | |
-,O | |
chain,O | |
reaction,O | |
(,O | |
PCR,O | |
),O | |
products,O | |
from,O | |
a,O | |
normal,O | |
subject,O | |
as,O | |
well,O | |
as,O | |
from,O | |
heterozygous,O | |
and,O | |
homozygous,O | |
W1282X,B-SNP | |
samples,O | |
.,O | |
, | |
The,O | |
results,O | |
obtained,O | |
show,O | |
that,O | |
both,O | |
allele,O | |
-,O | |
specific,O | |
10-,O | |
and,O | |
12,O | |
-,O | |
mer,O | |
oligonucleotides,O | |
are,O | |
suitable,O | |
probes,O | |
to,O | |
detect,O | |
W1282X,B-SNP | |
mutations,O | |
of,O | |
the,O | |
cystic,B-Gene | |
fibrosis,I-Gene | |
gene,O | |
under,O | |
standard,O | |
BIA,O | |
experimental,O | |
conditions,O | |
.,O | |
, | |
During,O | |
the,O | |
association,O | |
phase,O | |
performed,O | |
at,O | |
25,O | |
degrees,O | |
C,O | |
,,O | |
discrimination,O | |
between,O | |
mismatched,O | |
and,O | |
full,O | |
matched,O | |
hybrids,O | |
was,O | |
readily,O | |
and,O | |
reproducibly,O | |
observed,O | |
by,O | |
using,O | |
the,O | |
10,O | |
-,O | |
mer,O | |
W1282X,B-SNP | |
probes,O | |
.,O | |
, | |
By,O | |
contrast,O | |
,,O | |
when,O | |
the,O | |
12,O | |
-,O | |
mer,O | |
DNA,O | |
probes,O | |
were,O | |
employed,O | |
,,O | |
discrimination,O | |
between,O | |
mismatched,O | |
and,O | |
full,O | |
matched,O | |
hybrids,O | |
was,O | |
observed,O | |
during,O | |
the,O | |
dissociation,O | |
phase,O | |
.,O | |
, | |
Taken,O | |
together,O | |
,,O | |
the,O | |
results,O | |
presented,O | |
suggest,O | |
that,O | |
BIA,O | |
is,O | |
an,O | |
easy,O | |
,,O | |
speedy,O | |
,,O | |
and,O | |
automatable,O | |
approach,O | |
to,O | |
detect,O | |
point,O | |
mutations,O | |
leading,O | |
to,O | |
cystic,O | |
fibrosis,O | |
.,O | |
, | |
By,O | |
this,O | |
procedure,O | |
,,O | |
it,O | |
is,O | |
possible,O | |
to,O | |
perform,O | |
real,O | |
-,O | |
time,O | |
monitoring,O | |
of,O | |
hybridization,O | |
between,O | |
target,O | |
single,O | |
stranded,O | |
PCR,O | |
products,O | |
obtained,O | |
by,O | |
using,O | |
as,O | |
substrates,O | |
DNA,O | |
isolated,O | |
from,O | |
normal,O | |
or,O | |
heterozygous,O | |
subjects,O | |
,,O | |
and,O | |
homozygous,O | |
W1282X,B-SNP | |
CF,O | |
samples,O | |
and,O | |
oligonucleotide,O | |
probes,O | |
,,O | |
therefore,O | |
enabling,O | |
a,O | |
one,O | |
-,O | |
step,O | |
,,O | |
non,O | |
-,O | |
radioactive,O | |
protocol,O | |
to,O | |
perform,O | |
diagnosis,O | |
.,O | |
, | |
#17621637 | |
Lack,O | |
of,O | |
SSH1,B-Gene | |
mutations,O | |
in,O | |
Dutch,O | |
patients,O | |
with,O | |
disseminated,O | |
superficial,O | |
actinic,O | |
porokeratosis,O | |
:,O | |
is,O | |
there,O | |
really,O | |
an,O | |
association,O | |
?,O | |
, | |
#16960800 | |
A,O | |
genomewide,O | |
single,O | |
-,O | |
nucleotide,O | |
-,O | |
polymorphism,O | |
panel,O | |
with,O | |
high,O | |
ancestry,O | |
information,O | |
for,O | |
African,O | |
American,O | |
admixture,O | |
mapping,O | |
.,O | |
, | |
Admixture,O | |
mapping,O | |
requires,O | |
a,O | |
genomewide,O | |
panel,O | |
of,O | |
relatively,O | |
evenly,O | |
spaced,O | |
markers,O | |
that,O | |
can,O | |
distinguish,O | |
the,O | |
ancestral,O | |
origins,O | |
of,O | |
chromosomal,O | |
segments,O | |
in,O | |
admixed,O | |
individuals,O | |
.,O | |
, | |
Through,O | |
use,O | |
of,O | |
the,O | |
results,O | |
of,O | |
the,O | |
International,O | |
HapMap,O | |
Project,O | |
and,O | |
specific,O | |
selection,O | |
criteria,O | |
,,O | |
the,O | |
current,O | |
study,O | |
has,O | |
examined,O | |
the,O | |
ability,O | |
of,O | |
selected,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphisms,O | |
(,O | |
SNPs,O | |
),O | |
to,O | |
extract,O | |
continental,O | |
ancestry,O | |
information,O | |
in,O | |
African,O | |
American,O | |
subjects,O | |
and,O | |
to,O | |
explore,O | |
parameters,O | |
for,O | |
admixture,O | |
mapping,O | |
.,O | |
, | |
Genotyping,O | |
of,O | |
two,O | |
linguistically,O | |
diverse,O | |
West,O | |
African,O | |
populations,O | |
(,O | |
Bini,O | |
and,O | |
Kanuri,O | |
Nigerians,O | |
,,O | |
who,O | |
are,O | |
Niger,O | |
-,O | |
Congo,O | |
[,O | |
Bantu,O | |
],O | |
and,O | |
Nilo,O | |
-,O | |
Saharan,O | |
speakers,O | |
,,O | |
respectively,O | |
),O | |
,,O | |
European,O | |
Americans,O | |
,,O | |
and,O | |
African,O | |
Americans,O | |
validated,O | |
a,O | |
genomewide,O | |
set,O | |
of,O | |
>,O | |
4,000,O | |
SNP,O | |
ancestry,O | |
-,O | |
informative,O | |
markers,O | |
with,O | |
mean,O | |
and,O | |
median,O | |
F(ST,O | |
),O | |
values,O | |
>,O | |
0.59,O | |
and,O | |
mean,O | |
and,O | |
median,O | |
Fisher,O | |
's,O | |
information,O | |
content,O | |
>,O | |
2.5,O | |
.,O | |
, | |
This,O | |
set,O | |
of,O | |
SNPs,O | |
extracted,O | |
a,O | |
larger,O | |
amount,O | |
of,O | |
ancestry,O | |
information,O | |
in,O | |
African,O | |
Americans,O | |
than,O | |
previously,O | |
reported,O | |
SNP,O | |
panels,O | |
and,O | |
provides,O | |
nearly,O | |
uniform,O | |
coverage,O | |
of,O | |
the,O | |
genome,O | |
.,O | |
, | |
Moreover,O | |
,,O | |
in,O | |
the,O | |
current,O | |
study,O | |
,,O | |
simulations,O | |
show,O | |
that,O | |
this,O | |
more,O | |
informative,O | |
panel,O | |
improves,O | |
power,O | |
for,O | |
admixture,O | |
mapping,O | |
in,O | |
African,O | |
Americans,O | |
when,O | |
ethnicity,O | |
risk,O | |
ratios,O | |
are,O | |
modest,O | |
.,O | |
, | |
This,O | |
is,O | |
particularly,O | |
important,O | |
in,O | |
the,O | |
application,O | |
of,O | |
admixture,O | |
mapping,O | |
in,O | |
complex,O | |
genetic,O | |
diseases,O | |
for,O | |
which,O | |
only,O | |
modest,O | |
ethnicity,O | |
risk,O | |
ratios,O | |
of,O | |
relevant,O | |
susceptibility,O | |
genes,O | |
are,O | |
expected,O | |
.,O | |
, | |
#8571955 | |
Modulation,O | |
of,O | |
the,O | |
phenotype,O | |
in,O | |
dominant,O | |
erythropoietic,O | |
protoporphyria,O | |
by,O | |
a,O | |
low,O | |
expression,O | |
of,O | |
the,O | |
normal,O | |
ferrochelatase,O | |
allele,O | |
.,O | |
, | |
Erythropoietic,O | |
protoporphyria,O | |
(,O | |
EPP,O | |
),O | |
is,O | |
a,O | |
monogenic,O | |
inherited,O | |
disorder,O | |
of,O | |
the,O | |
heme,O | |
biosynthetic,O | |
pathway,O | |
due,O | |
to,O | |
ferrochelatase,O | |
(,O | |
FC,O | |
),O | |
deficiency,O | |
.,O | |
, | |
EPP,O | |
is,O | |
generally,O | |
considered,O | |
to,O | |
be,O | |
transmitted,O | |
as,O | |
an,O | |
autosomal,O | |
dominant,O | |
disease,O | |
with,O | |
incomplete,O | |
penetrance,O | |
,,O | |
although,O | |
autosomal,O | |
recessive,O | |
inheritance,O | |
has,O | |
been,O | |
documented,O | |
at,O | |
the,O | |
enzymatic,O | |
and,O | |
molecular,O | |
level,O | |
in,O | |
some,O | |
families,O | |
.,O | |
, | |
In,O | |
the,O | |
dominant,O | |
form,O | |
of,O | |
EPP,O | |
,,O | |
statistical,O | |
analysis,O | |
of,O | |
FC,O | |
activities,O | |
documented,O | |
a,O | |
significantly,O | |
lower,O | |
mean,O | |
value,O | |
in,O | |
patients,O | |
than,O | |
in,O | |
asymptomatic,O | |
carriers,O | |
,,O | |
suggesting,O | |
a,O | |
more,O | |
complex,O | |
mode,O | |
of,O | |
inheritance,O | |
.,O | |
, | |
To,O | |
account,O | |
for,O | |
these,O | |
findings,O | |
,,O | |
we,O | |
tested,O | |
a,O | |
multiallelic,O | |
inheritance,O | |
model,O | |
in,O | |
one,O | |
EPP,O | |
family,O | |
in,O | |
which,O | |
the,O | |
enzymatic,O | |
data,O | |
were,O | |
compatible,O | |
with,O | |
this,O | |
hypothesis,O | |
.,O | |
, | |
In,O | |
this,O | |
EPP,O | |
family,O | |
,,O | |
the,O | |
specific,O | |
FC,O | |
gene,O | |
mutation,O | |
was,O | |
an,O | |
exon,O | |
10,O | |
skipping,O | |
(,O | |
delta,O | |
Ex10,O | |
),O | |
,,O | |
resulting,O | |
from,O | |
a,O | |
G,O | |
deletion,O | |
within,O | |
the,O | |
exon,O | |
10,O | |
consensus,O | |
splice,O | |
donor,O | |
site,O | |
.,O | |
, | |
The,O | |
segregation,O | |
of,O | |
all,O | |
FC,O | |
alleles,O | |
within,O | |
the,O | |
family,O | |
was,O | |
followed,O | |
using,O | |
the,O | |
delta,O | |
Ex10,O | |
mutation,O | |
and,O | |
a,O | |
new,O | |
intragenic,O | |
dimorphism,O | |
(,B-SNP | |
1520,I-SNP | |
C,I-SNP | |
/,I-SNP | |
T,I-SNP | |
),I-SNP | |
.,O | |
, | |
mRNAs,O | |
transcribed,O | |
from,O | |
each,O | |
FC,O | |
allele,O | |
were,O | |
then,O | |
subjected,O | |
to,O | |
relative,O | |
quantification,O | |
by,O | |
a,O | |
primer,O | |
extension,O | |
assay,O | |
and,O | |
to,O | |
absolute,O | |
quantification,O | |
by,O | |
a,O | |
ribonuclease,O | |
protection,O | |
assay,O | |
.,O | |
, | |
The,O | |
data,O | |
support,O | |
the,O | |
hypothesis,O | |
that,O | |
in,O | |
this,O | |
family,O | |
the,O | |
EPP,O | |
phenotype,O | |
results,O | |
from,O | |
the,O | |
coinheritance,O | |
of,O | |
a,O | |
low,O | |
output,O | |
normal,O | |
FC,O | |
allele,O | |
and,O | |
a,O | |
mutant,O | |
delta,O | |
Ex10,O | |
allele,O | |
.,O | |
, | |
#12796855 | |
Selection,O | |
of,O | |
genetic,O | |
markers,O | |
for,O | |
association,O | |
analyses,O | |
,,O | |
using,O | |
linkage,O | |
disequilibrium,O | |
and,O | |
haplotypes,O | |
.,O | |
, | |
The,O | |
genotyping,O | |
of,O | |
closely,O | |
spaced,O | |
single,O | |
-,O | |
nucleotide,O | |
polymorphism,O | |
(,O | |
SNP,O | |
),O | |
markers,O | |
frequently,O | |
yields,O | |
highly,O | |
correlated,O | |
data,O | |
,,O | |
owing,O | |
to,O | |
extensive,O | |
linkage,O | |
disequilibrium,O | |
(,O | |
LD,O | |
),O | |
between,O | |
markers,O | |
.,O | |
, | |
The,O | |
extent,O | |
of,O | |
LD,O | |
varies,O | |
widely,O | |
across,O | |
the,O | |
genome,O | |
and,O | |
drives,O | |
the,O | |
number,O | |
of,O | |
frequent,O | |
haplotypes,O | |
observed,O | |
in,O | |
small,O | |
regions,O | |
.,O | |
, | |
Several,O | |
studies,O | |
have,O | |
illustrated,O | |
the,O | |
possibility,O | |
that,O | |
LD,O | |
or,O | |
haplotype,O | |
data,O | |
could,O | |
be,O | |
used,O | |
to,O | |
select,O | |
a,O | |
subset,O | |
of,O | |
SNPs,O | |
that,O | |
optimize,O | |
the,O | |
information,O | |
retained,O | |
in,O | |
a,O | |
genomic,O | |
region,O | |
while,O | |
reducing,O | |
the,O | |
genotyping,O | |
effort,O | |
and,O | |
simplifying,O | |
the,O | |
analysis,O | |
.,O | |
, | |
We,O | |
propose,O | |
a,O | |
method,O | |
based,O | |
on,O | |
the,O | |
spectral,O | |
decomposition,O | |
of,O | |
the,O | |
matrices,O | |
of,O | |
pairwise,O | |
LD,O | |
between,O | |
markers,O | |
,,O | |
and,O | |
we,O | |
select,O | |
markers,O | |
on,O | |
the,O | |
basis,O | |
of,O | |
their,O | |
contributions,O | |
to,O | |
the,O | |
total,O | |
genetic,O | |
variation,O | |
.,O | |
, | |
We,O | |
also,O | |
modify,O | |
Clayton,O | |
's,O | |
",O | |
haplotype,O | |
tagging,O | |
SNP,O | |
",O | |
selection,O | |
method,O | |
,,O | |
which,O | |
utilizes,O | |
haplotype,O | |
information,O | |
.,O | |
, | |
For,O | |
both,O | |
methods,O | |
,,O | |
we,O | |
propose,O | |
sliding,O | |
window,O | |
-,O | |
based,O | |
algorithms,O | |
that,O | |
allow,O | |
the,O | |
methods,O | |
to,O | |
be,O | |
applied,O | |
to,O | |
large,O | |
chromosomal,O | |
regions,O | |
.,O | |
, | |
Our,O | |
procedures,O | |
require,O | |
genotype,O | |
information,O | |
about,O | |
a,O | |
small,O | |
number,O | |
of,O | |
individuals,O | |
for,O | |
an,O | |
initial,O | |
set,O | |
of,O | |
SNPs,O | |
and,O | |
selection,O | |
of,O | |
an,O | |
optimum,O | |
subset,O | |
of,O | |
SNPs,O | |
that,O | |
could,O | |
be,O | |
efficiently,O | |
genotyped,O | |
on,O | |
larger,O | |
numbers,O | |
of,O | |
samples,O | |
while,O | |
retaining,O | |
most,O | |
of,O | |
the,O | |
genetic,O | |
variation,O | |
in,O | |
samples,O | |
.,O | |
, | |
We,O | |
identify,O | |
suitable,O | |
parameter,O | |
combinations,O | |
for,O | |
the,O | |
procedures,O | |
,,O | |
and,O | |
we,O | |
show,O | |
that,O | |
a,O | |
sample,O | |
size,O | |
of,O | |
50,O | |
-,O | |
100,O | |
individuals,O | |
achieves,O | |
consistent,O | |
results,O | |
in,O | |
studies,O | |
of,O | |
simulated,O | |
data,O | |
sets,O | |
in,O | |
linkage,O | |
equilibrium,O | |
and,O | |
LD,O | |
.,O | |
, | |
When,O | |
applied,O | |
to,O | |
experimental,O | |
data,O | |
sets,O | |
,,O | |
both,O | |
procedures,O | |
were,O | |
similarly,O | |
effective,O | |
at,O | |
reducing,O | |
the,O | |
genotyping,O | |
requirement,O | |
while,O | |
maintaining,O | |
the,O | |
genetic,O | |
information,O | |
content,O | |
throughout,O | |
the,O | |
regions,O | |
.,O | |
, | |
We,O | |
also,O | |
show,O | |
that,O | |
haplotype,O | |
-,O | |
association,O | |
results,O | |
that,O | |
Hosking,O | |
et,O | |
al,O | |
.,O | |
, | |
obtained,O | |
near,O | |
CYP2D6,B-Gene | |
were,O | |
almost,O | |
identical,O | |
before,O | |
and,O | |
after,O | |
marker,O | |
selection,O | |
.,O | |
, | |
#10775524 | |
Identification,O | |
of,O | |
uniparental,O | |
disomy,O | |
following,O | |
prenatal,O | |
detection,O | |
of,O | |
Robertsonian,O | |
translocations,O | |
and,O | |
isochromosomes,O | |
.,O | |
, | |
Rearrangements,O | |
of,O | |
the,O | |
acrocentric,O | |
chromosomes,O | |
(,O | |
Robertsonian,O | |
translocations,O | |
and,O | |
isochromosomes,O | |
),O | |
are,O | |
associated,O | |
with,O | |
an,O | |
increased,O | |
risk,O | |
of,O | |
aneuploidy,O | |
.,O | |
, | |
Given,O | |
this,O | |
,,O | |
and,O | |
the,O | |
large,O | |
number,O | |
of,O | |
reported,O | |
cases,O | |
of,O | |
uniparental,O | |
disomy,O | |
(,O | |
UPD,O | |
),O | |
associated,O | |
with,O | |
an,O | |
acrocentric,O | |
rearrangement,O | |
,,O | |
carriers,O | |
are,O | |
presumed,O | |
to,O | |
be,O | |
at,O | |
risk,O | |
for,O | |
UPD,O | |
.,O | |
, | |
However,O | |
,,O | |
an,O | |
accurate,O | |
risk,O | |
estimate,O | |
for,O | |
UPD,O | |
associated,O | |
with,O | |
these,O | |
rearrangements,O | |
is,O | |
lacking,O | |
.,O | |
, | |
A,O | |
total,O | |
of,O | |
174,O | |
prenatally,O | |
identified,O | |
acrocentric,O | |
rearrangements,O | |
,,O | |
including,O | |
both,O | |
Robertsonian,O | |
translocations,O | |
and,O | |
isochromosomes,O | |
,,O | |
were,O | |
studied,O | |
prospectively,O | |
to,O | |
identify,O | |
UPD,O | |
for,O | |
the,O | |
chromosomes,O | |
involved,O | |
in,O | |
the,O | |
rearrangements,O | |
.,O | |
, | |
The,O | |
overall,O | |
goal,O | |
of,O | |
the,O | |
study,O | |
was,O | |
to,O | |
provide,O | |
an,O | |
estimate,O | |
of,O | |
the,O | |
risk,O | |
of,O | |
UPD,O | |
associated,O | |
with,O | |
nonhomologous,O | |
Robertsonian,O | |
translocations,O | |
and,O | |
homologous,O | |
acrocentric,O | |
rearrangements,O | |
.,O | |
, | |
Of,O | |
the,O | |
168,O | |
nonhomologous,O | |
Robertsonian,O | |
translocations,O | |
studied,O | |
,,O | |
one,O | |
showed,O | |
UPD,O | |
for,O | |
chromosome,O | |
13,O | |
,,O | |
providing,O | |
a,O | |
risk,O | |
estimate,O | |
of,O | |
0.6,O | |
%,O | |
.,O | |
, | |
Four,O | |
of,O | |
the,O | |
six,O | |
homologous,O | |
acrocentric,O | |
rearrangements,O | |
showed,O | |
UPD,O | |
,,O | |
providing,O | |
a,O | |
risk,O | |
estimate,O | |
of,O | |
66,O | |
%,O | |
.,O | |
, | |
These,O | |
cases,O | |
have,O | |
also,O | |
allowed,O | |
delineation,O | |
of,O | |
the,O | |
mechanisms,O | |
involved,O | |
in,O | |
producing,O | |
UPD,O | |
unique,O | |
to,O | |
Robertsonian,O | |
translocations,O | |
.,O | |
, | |
Given,O | |
the,O | |
relatively,O | |
high,O | |
risk,O | |
for,O | |
UPD,O | |
in,O | |
prenatally,O | |
identified,O | |
Robertsonian,O | |
translocations,O | |
and,O | |
isochromosomes,O | |
,,O | |
UPD,O | |
testing,O | |
should,O | |
be,O | |
considered,O | |
,,O | |
especially,O | |
for,O | |
cases,O | |
involving,O | |
the,O | |
acrocentric,O | |
chromosomes,O | |
14,O | |
and,O | |
15,O | |
,,O | |
in,O | |
which,O | |
UPD,O | |
is,O | |
associated,O | |
with,O | |
adverse,O | |
clinical,O | |
outcomes,O | |
.,O | |
, | |
#12552571 | |
Functional,O | |
analysis,O | |
of,O | |
LKB1,B-Gene | |
/,B-Gene | |
STK11,I-Gene | |
mutants,O | |
and,O | |
two,O | |
aberrant,O | |
isoforms,O | |
found,O | |
in,O | |
Peutz,O | |
-,O | |
Jeghers,O | |
Syndrome,O | |
patients,O | |
.,O | |
, | |
Peutz,O | |
-,O | |
Jeghers,O | |
Syndrome,O | |
(,O | |
PJS,O | |
),O | |
is,O | |
thought,O | |
to,O | |
be,O | |
caused,O | |
by,O | |
mutations,O | |
occurring,O | |
in,O | |
the,O | |
widely,O | |
expressed,O | |
serine,O | |
/,O | |
threonine,O | |
protein,O | |
kinase,O | |
named,O | |
LKB1,B-Gene | |
/,B-Gene | |
STK11,I-Gene | |
.,I-Gene | |
, | |
Recent,O | |
work,O | |
has,O | |
led,O | |
to,O | |
the,O | |
identification,O | |
of,O | |
four,O | |
mutants,O | |
(,B-SNP | |
R304W,I-SNP | |
,,I-SNP | |
I177N,B-SNP | |
,,I-SNP | |
K175,B-SNP | |
-,I-SNP | |
D176del,I-SNP | |
,,I-SNP | |
L263fsX286,B-SNP | |
),I-SNP | |
and,O | |
two,O | |
novel,O | |
aberrant,O | |
LKB1,B-Gene | |
/,B-Gene | |
STK11,I-Gene | |
cDNA,O | |
isoforms,O | |
(,O | |
r291,O | |
-,O | |
464del,O | |
,,O | |
r485,O | |
-,O | |
1283del,O | |
),O | |
in,O | |
a,O | |
group,O | |
of,O | |
PJS,O | |
Italian,O | |
patients,O | |
.,O | |
, | |
Three,O | |
of,O | |
the,O | |
four,O | |
mutations,O | |
only,O | |
change,O | |
1,O | |
or,O | |
2,O | |
amino,O | |
acids,O | |
in,O | |
the,O | |
LKB1,B-Gene | |
/,B-Gene | |
STK11,I-Gene | |
catalytic,O | |
domain,O | |
.,O | |
, | |
Here,O | |
we,O | |
demonstrate,O | |
that,O | |
all,O | |
six,O | |
LKB1,O | |
/,O | |
STK11,O | |
variants,O | |
analysed,O | |
are,O | |
completely,O | |
inactive,O | |
in,O | |
vitro,O | |
as,O | |
they,O | |
were,O | |
unable,O | |
to,O | |
autophosphorylate,O | |
at,O | |
Thr336,O | |
,,O | |
the,O | |
major,O | |
LKB1,O | |
/,O | |
STK11,O | |
autophosphorylation,O | |
site,O | |
,,O | |
and,O | |
to,O | |
phosphorylate,O | |
the,O | |
p53,O | |
tumour,O | |
suppressor,O | |
protein,O | |
.,O | |
, | |
We,O | |
also,O | |
show,O | |
that,O | |
5,O | |
out,O | |
of,O | |
the,O | |
6,O | |
variants,O | |
are,O | |
entirely,O | |
localised,O | |
in,O | |
the,O | |
nucleus,O | |
in,O | |
contrast,O | |
to,O | |
the,O | |
wild,O | |
type,O | |
LKB1,O | |
/,O | |
STK11,O | |
,,O | |
which,O | |
is,O | |
detected,O | |
in,O | |
both,O | |
the,O | |
nucleus,O | |
and,O | |
cytoplasm,O | |
.,O | |
, | |
Finally,O | |
we,O | |
demonstrate,O | |
that,O | |
all,O | |
6,O | |
LKB1,O | |
/,O | |
STK11,O | |
variants,O | |
,,O | |
in,O | |
contrast,O | |
to,O | |
wild,O | |
type,O | |
LKB1,O | |
/,O | |
STK11,O | |
,,O | |
are,O | |
unable,O | |
to,O | |
suppress,O | |
the,O | |
growth,O | |
of,O | |
melanoma,O | |
G361,O | |
cells,O | |
.,O | |
, | |
Taken,O | |
together,O | |
,,O | |
these,O | |
results,O | |
demonstrate,O | |
that,O | |
the,O | |
LKB1,O | |
mutations,O | |
investigated,O | |
in,O | |
this,O | |
study,O | |
lead,O | |
to,O | |
the,O | |
loss,O | |
of,O | |
serine,O | |
/,O | |
threonine,O | |
kinase,O | |
activity,O | |
and,O | |
are,O | |
therefore,O | |
likely,O | |
to,O | |
be,O | |
the,O | |
primary,O | |
cause,O | |
of,O | |
PJS,O | |
development,O | |
in,O | |
the,O | |
patients,O | |
that,O | |
they,O | |
were,O | |
isolated,O | |
from,O | |
.,O | |
, | |
#9326322 | |
Analysis,O | |
of,O | |
the,O | |
RPGR,B-Gene | |
gene,O | |
in,O | |
11,O | |
pedigrees,O | |
with,O | |
the,O | |
retinitis,O | |
pigmentosa,O | |
type,O | |
3,O | |
genotype,O | |
:,O | |
paucity,O | |
of,O | |
mutations,O | |
in,O | |
the,O | |
coding,O | |
region,O | |
but,O | |
splice,O | |
defects,O | |
in,O | |
two,O | |
families,O | |
.,O | |
, | |
X,O | |
-,O | |
linked,O | |
retinitis,O | |
pigmentosa,O | |
(,O | |
XLRP,O | |
),O | |
is,O | |
a,O | |
severe,O | |
form,O | |
of,O | |
inherited,O | |
progressive,O | |
retinal,O | |
degeneration,O | |
.,O | |
, | |
The,O | |
RP3,B-Gene | |
(,O | |
retinitis,O | |
pigmentosa,O | |
type,O | |
3,O | |
),O | |
locus,O | |
at,O | |
Xp21.1,O | |
is,O | |
believed,O | |
to,O | |
account,O | |
for,O | |
the,O | |
disease,O | |
in,O | |
the,O | |
majority,O | |
of,O | |
XLRP,O | |
families,O | |
.,O | |
, | |
Linkage,O | |
analysis,O | |
and,O | |
identification,O | |
of,O | |
patients,O | |
with,O | |
chromosomal,O | |
deletion,O | |
have,O | |
refined,O | |
the,O | |
location,O | |
of,O | |
the,O | |
RP3,B-Gene | |
locus,O | |
and,O | |
recently,O | |
have,O | |
led,O | |
to,O | |
the,O | |
cloning,O | |
of,O | |
the,O | |
RPGR,B-Gene | |
(,B-Gene | |
retinitis,I-Gene | |
pigmentosa,I-Gene | |
GTPase,I-Gene | |
regulator,I-Gene | |
),I-Gene | |
gene,O | |
,,O | |
which,O | |
has,O | |
been,O | |
shown,O | |
to,O | |
be,O | |
mutated,O | |
in,O | |
10%-15,O | |
%,O | |
of,O | |
XLRP,O | |
patients,O | |
.,O | |
, | |
In,O | |
order,O | |
to,O | |
systematically,O | |
characterize,O | |
the,O | |
RPGR,B-Gene | |
mutations,O | |
,,O | |
we,O | |
identified,O | |
11,O | |
retinitis,O | |
pigmentosa,O | |
type,O | |
III,O | |
(,B-Gene | |
RP3,I-Gene | |
),I-Gene | |
families,O | |
by,O | |
haplotype,O | |
analysis,O | |
.,O | |
, | |
Sequence,O | |
analysis,O | |
of,O | |
the,O | |
PCR,O | |
-,O | |
amplified,O | |
genomic,O | |
DNA,O | |
from,O | |
patients,O | |
representing,O | |
these,O | |
RP3,B-Gene | |
families,O | |
did,O | |
not,O | |
reveal,O | |
any,O | |
causative,O | |
mutation,O | |
in,O | |
RPGR,B-Gene | |
exons,O | |
2,O | |
-,O | |
19,O | |
,,O | |
spanning,O | |
>,O | |
98,O | |
%,O | |
of,O | |
the,O | |
coding,O | |
region,O | |
.,O | |
, | |
In,O | |
patients,O | |
from,O | |
two,O | |
families,O | |
,,O | |
we,O | |
identified,O | |
transition,O | |
mutations,O | |
in,O | |
the,O | |
intron,O | |
region,O | |
near,O | |
splice,O | |
sites,O | |
(,O | |
IVS10,O | |
+,O | |
3,O | |
and,O | |
IVS13,O | |
-,O | |
8),O | |
.,O | |
, | |
RNA,O | |
analysis,O | |
showed,O | |
that,O | |
both,O | |
splice,O | |
-,O | |
site,O | |
mutations,O | |
resulted,O | |
in,O | |
the,O | |
generation,O | |
of,O | |
aberrant,O | |
RPGR,B-Gene | |
transcripts,O | |
.,O | |
, | |
Our,O | |
results,O | |
support,O | |
the,O | |
hypothesis,O | |
that,O | |
mutations,O | |
in,O | |
the,O | |
reported,O | |
RPGR,B-Gene | |
gene,O | |
are,O | |
not,O | |
a,O | |
common,O | |
defect,O | |
in,O | |
the,O | |
RP3,B-Gene | |
subtype,O | |
of,O | |
XLRP,O | |
and,O | |
that,O | |
a,O | |
majority,O | |
of,O | |
causative,O | |
mutations,O | |
may,O | |
reside,O | |
either,O | |
in,O | |
as,O | |
yet,O | |
unidentified,O | |
RPGR,B-Gene | |
exons,O | |
or,O | |
in,O | |
another,O | |
nearby,O | |
gene,O | |
at,O | |
Xp21.1,O | |
.,O | |
, | |
#17503322 | |
A,O | |
genomewide,O | |
admixture,O | |
map,O | |
for,O | |
Latino,O | |
populations,O | |
.,O | |
, | |
Admixture,O | |
mapping,O | |
is,O | |
an,O | |
economical,O | |
and,O | |
powerful,O | |
approach,O | |
for,O | |
localizing,O | |
disease,O | |
genes,O | |
in,O | |
populations,O | |
of,O | |
recently,O | |
mixed,O | |
ancestry,O | |
and,O | |
has,O | |
proven,O | |
successful,O | |
in,O | |
African,O | |
Americans,O | |
.,O | |
, | |
The,O | |
method,O | |
holds,O | |
equal,O | |
promise,O | |
for,O | |
Latinos,O | |
,,O | |
who,O | |
typically,O | |
inherit,O | |
a,O | |
mix,O | |
of,O | |
European,O | |
,,O | |
Native,O | |
American,O | |
,,O | |
and,O | |
African,O | |
ancestry,O | |
.,O | |
, | |
However,O | |
,,O | |
admixture,O | |
mapping,O | |
in,O | |
Latinos,O | |
has,O | |
not,O | |
been,O | |
practical,O | |
because,O | |
of,O | |
the,O | |
lack,O | |
of,O | |
a,O | |
map,O | |
of,O | |
ancestry,O | |
-,O | |
informative,O | |
markers,O | |
validated,O | |
in,O | |
Native,O | |
American,O | |
and,O | |
other,O | |
populations,O | |
.,O | |
, | |
To,O | |
address,O | |
this,O | |
,,O | |
we,O | |
screened,O | |
multiple,O | |
databases,O | |
,,O | |
containing,O | |
millions,O | |
of,O | |
markers,O | |
,,O | |
to,O | |
identify,O | |
4,186,O | |
markers,O | |
that,O | |
were,O | |
putatively,O | |
informative,O | |
for,O | |
determining,O | |
the,O | |
ancestry,O | |
of,O | |
chromosomal,O | |
segments,O | |
in,O | |
Latino,O | |
populations,O | |
.,O | |
, | |
We,O | |
experimentally,O | |
validated,O | |
each,O | |
of,O | |
these,O | |
markers,O | |
in,O | |
at,O | |
least,O | |
232,O | |
new,O | |
Latino,O | |
,,O | |
European,O | |
,,O | |
Native,O | |
American,O | |
,,O | |
and,O | |
African,O | |
samples,O | |
,,O | |
and,O | |
we,O | |
selected,O | |
a,O | |
subset,O | |
of,O | |
1,649,O | |
markers,O | |
to,O | |
form,O | |
an,O | |
admixture,O | |
map,O | |
.,O | |
, | |
An,O | |
advantage,O | |
of,O | |
our,O | |
strategy,O | |
is,O | |
that,O | |
we,O | |
focused,O | |
our,O | |
map,O | |
on,O | |
markers,O | |
distinguishing,O | |
Native,O | |
American,O | |
from,O | |
other,O | |
ancestries,O | |
and,O | |
restricted,O | |
it,O | |
to,O | |
markers,O | |
with,O | |
very,O | |
similar,O | |
frequencies,O | |
in,O | |
Europeans,O | |
and,O | |
Africans,O | |
,,O | |
which,O | |
decreased,O | |
the,O | |
number,O | |
of,O | |
markers,O | |
needed,O | |
and,O | |
minimized,O | |
the,O | |
possibility,O | |
of,O | |
false,O | |
disease,O | |
associations,O | |
.,O | |
, | |
We,O | |
evaluated,O | |
the,O | |
effectiveness,O | |
of,O | |
our,O | |
map,O | |
for,O | |
localizing,O | |
disease,O | |
genes,O | |
in,O | |
four,O | |
Latino,O | |
populations,O | |
from,O | |
both,O | |
North,O | |
and,O | |
South,O | |
America,O | |
.,O | |
, | |
#17041889 | |
Recessive,O | |
arrhythmogenic,O | |
right,O | |
ventricular,O | |
dysplasia,O | |
due,O | |
to,O | |
novel,O | |
cryptic,O | |
splice,O | |
mutation,O | |
in,O | |
PKP2,B-Gene | |
.,I-Gene | |
, | |
Arrhythmogenic,O | |
right,O | |
ventricular,O | |
dysplasia,O | |
(,O | |
ARVD,O | |
),O | |
is,O | |
a,O | |
genetic,O | |
disorder,O | |
resulting,O | |
in,O | |
fibro,O | |
-,O | |
fatty,O | |
replacement,O | |
of,O | |
right,O | |
ventricular,O | |
myocytes,O | |
and,O | |
consequent,O | |
ventricular,O | |
arrhythmias,O | |
.,O | |
, | |
Heterozygous,O | |
mutations,O | |
in,O | |
PKP2,B-Gene | |
encoding,O | |
plakophilin-2,B-Gene | |
have,O | |
previously,O | |
been,O | |
reported,O | |
to,O | |
cause,O | |
dominant,O | |
ARVD,O | |
with,O | |
reduced,O | |
penetrance,O | |
.,O | |
, | |
We,O | |
report,O | |
the,O | |
first,O | |
case,O | |
of,O | |
recessive,O | |
ARVD,O | |
caused,O | |
by,O | |
mutations,O | |
in,O | |
PKP2,B-Gene | |
.,I-Gene | |
, | |
Candidate,O | |
gene,O | |
analysis,O | |
in,O | |
a,O | |
typical,O | |
proband,O | |
with,O | |
this,O | |
disorder,O | |
identified,O | |
a,O | |
novel,O | |
homozygous,O | |
mutation,O | |
in,O | |
PKP2,B-Gene | |
(,B-SNP | |
c.[2484C,I-SNP | |
>,I-SNP | |
T]+[2484C,I-SNP | |
>,I-SNP | |
T,I-SNP | |
],I-SNP | |
),O | |
,,O | |
which,O | |
is,O | |
predicted,O | |
to,O | |
be,O | |
translationally,O | |
silent,O | |
(,B-SNP | |
p.,I-SNP | |
Gly828,I-SNP | |
),I-SNP | |
.,O | |
, | |
Analysis,O | |
of,O | |
the,O | |
proband,O | |
's,O | |
mRNA,O | |
,,O | |
however,O | |
,,O | |
shows,O | |
that,O | |
this,O | |
mutation,O | |
causes,O | |
predominantly,O | |
cryptic,O | |
splicing,O | |
,,O | |
with,O | |
a,O | |
7,O | |
-,O | |
nucleotide,O | |
deletion,O | |
in,O | |
exon,O | |
12,O | |
.,O | |
, | |
The,O | |
ensuing,O | |
frame,O | |
shift,O | |
disrupts,O | |
the,O | |
last,O | |
54,O | |
amino,O | |
acids,O | |
of,O | |
plakophilin-2,O | |
and,O | |
extends,O | |
the,O | |
open,O | |
reading,O | |
frame,O | |
by,O | |
145,O | |
nucleotides,O | |
(,O | |
48,O | |
amino,O | |
acids,O | |
),O | |
into,O | |
the,O | |
3,O | |
',O | |
untranslated,O | |
region,O | |
.,O | |
, | |
Haplotype,O | |
analysis,O | |
demonstrates,O | |
the,O | |
absence,O | |
of,O | |
remote,O | |
consanguinity,O | |
.,O | |
, | |
Heterozygous,O | |
family,O | |
members,O | |
produce,O | |
approximately,O | |
60,O | |
%,O | |
of,O | |
properly,O | |
spliced,O | |
PKP2,B-Gene | |
and,O | |
do,O | |
not,O | |
have,O | |
manifestations,O | |
of,O | |
ARVD,O | |
.,O | |
, | |
Further,O | |
analysis,O | |
of,O | |
PKP2,B-Gene | |
mRNA,O | |
sequence,O | |
revealed,O | |
two,O | |
additional,O | |
alternatively,O | |
spliced,O | |
transcripts,O | |
.,O | |
, | |
The,O | |
possibility,O | |
of,O | |
cryptic,O | |
or,O | |
alternative,O | |
splicing,O | |
should,O | |
be,O | |
considered,O | |
with,O | |
identification,O | |
of,O | |
apparently,O | |
synonymous,O | |
nucleotide,O | |
substitutions,O | |
in,O | |
this,O | |
gene,O | |
.,O | |
, | |
#8116620 | |
Identification,O | |
of,O | |
internal,O | |
variation,O | |
in,O | |
the,O | |
pseudoautosomal,O | |
VNTR,O | |
DXYS17,O | |
,,O | |
with,O | |
nonrandom,O | |
distribution,O | |
of,O | |
the,O | |
alleles,O | |
on,O | |
the,O | |
X,O | |
and,O | |
the,O | |
Y,O | |
chromosomes,O | |
.,O | |
, | |
The,O | |
PCR,O | |
technique,O | |
was,O | |
used,O | |
to,O | |
analyze,O | |
the,O | |
DXYS17,O | |
locus,O | |
in,O | |
the,O | |
pseudoautosomal,O | |
region,O | |
of,O | |
the,O | |
X,O | |
and,O | |
the,O | |
Y,O | |
chromosomes,O | |
.,O | |
, | |
Analysis,O | |
on,O | |
an,O | |
automated,O | |
DNA,O | |
sequencer,O | |
allowed,O | |
for,O | |
sensitive,O | |
and,O | |
highly,O | |
accurate,O | |
typing,O | |
of,O | |
16,O | |
different,O | |
alleles,O | |
with,O | |
a,O | |
size,O | |
between,O | |
480,O | |
and,O | |
1,100,O | |
bp,O | |
.,O | |
, | |
Two,O | |
DXYS17,O | |
alleles,O | |
migrated,O | |
with,O | |
the,O | |
same,O | |
size,O | |
on,O | |
agarose,O | |
or,O | |
denaturing,O | |
polyacrylamide,O | |
gels,O | |
, | |
but,O | |
with,O | |
different,O | |
mobilities,O | |
on,O | |
nondenaturing,O | |
polyacrylamide,O | |
gels,O | |
.,O | |
, | |
Sequence,O | |
analysis,O | |
showed,O | |
that,O | |
,,O | |
while,O | |
an,O | |
identical,O | |
number,O | |
of,O | |
repeats,O | |
were,O | |
present,O | |
in,O | |
both,O | |
alleles,O | |
,,O | |
differences,O | |
in,O | |
the,O | |
composition,O | |
of,O | |
the,O | |
units,O | |
were,O | |
observed,O | |
.,O | |
, | |
The,O | |
origin,O | |
of,O | |
these,O | |
differences,O | |
was,O | |
found,O | |
in,O | |
the,O | |
28-,O | |
and,O | |
33,O | |
-,O | |
bp,O | |
units,O | |
,,O | |
which,O | |
only,O | |
had,O | |
a,O | |
specific,O | |
repeat,O | |
pattern,O | |
at,O | |
the,O | |
5,O | |
',O | |
and,O | |
3,O | |
',O | |
ends,O | |
of,O | |
the,O | |
region,O | |
.,O | |
, | |
The,O | |
genotype,O | |
distribution,O | |
for,O | |
DXYS17,O | |
in,O | |
a,O | |
Caucasian,O | |
population,O | |
did,O | |
not,O | |
deviate,O | |
from,O | |
the,O | |
values,O | |
expected,O | |
under,O | |
Hardy,O | |
-,O | |
Weinberg,O | |
equilibrium,O | |
.,O | |
, | |
However,O | |
,,O | |
the,O | |
frequency,O | |
of,O | |
one,O | |
allele,O | |
and,O | |
one,O | |
genotype,O | |
was,O | |
significantly,O | |
different,O | |
between,O | |
males,O | |
and,O | |
females,O | |
.,O | |
, | |
Segregation,O | |
analysis,O | |
showed,O | |
that,O | |
this,O | |
difference,O | |
was,O | |
the,O | |
result,O | |
of,O | |
a,O | |
nonrandom,O | |
distribution,O | |
of,O | |
certain,O | |
alleles,O | |
on,O | |
the,O | |
sex,O | |
chromosomes,O | |
in,O | |
males,O | |
.,O | |
, | |
#12402331 | |
Novel,O | |
PEX1,B-Gene | |
mutations,O | |
and,O | |
genotype,O | |
-,O | |
phenotype,O | |
correlations,O | |
in,O | |
Australasian,O | |
peroxisome,O | |
biogenesis,O | |
disorder,O | |
patients,O | |
.,O | |
, | |
The,O | |
peroxisome,O | |
biogenesis,O | |
disorders,O | |
(,O | |
PBDs,O | |
),O | |
are,O | |
a,O | |
group,O | |
of,O | |
neuronal,O | |
migration,O | |
/,O | |
neurodegenerative,O | |
disorders,O | |
that,O | |
arise,O | |
from,O | |
defects,O | |
in,O | |
PEX,B-Gene | |
genes,O | |
.,O | |
, | |
A,O | |
major,O | |
subgroup,O | |
of,O | |
the,O | |
PBDs,O | |
includes,O | |
Zellweger,O | |
syndrome,O | |
(,O | |
ZS,O | |
),O | |
,,O | |
neonatal,O | |
adrenoleukodystrophy,O | |
(,O | |
NALD,O | |
),O | |
,,O | |
and,O | |
infantile,O | |
Refsum,O | |
disease,O | |
(,O | |
IRD,O | |
),O | |
.,O | |
, | |
These,O | |
three,O | |
disorders,O | |
represent,O | |
a,O | |
clinical,O | |
continuum,O | |
with,O | |
Zellweger,O | |
syndrome,O | |
the,O | |
most,O | |
severe,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
the,O | |
PEX1,B-Gene | |
gene,O | |
,,O | |
which,O | |
encodes,O | |
a,O | |
protein,O | |
of,O | |
the,O | |
AAA,O | |
ATPase,O | |
family,O | |
involved,O | |
in,O | |
peroxisome,O | |
matrix,O | |
protein,O | |
import,O | |
,,O | |
account,O | |
for,O | |
the,O | |
genetic,O | |
defect,O | |
in,O | |
more,O | |
than,O | |
half,O | |
of,O | |
the,O | |
patients,O | |
in,O | |
this,O | |
PBD,O | |
subgroup,O | |
.,O | |
, | |
We,O | |
report,O | |
here,O | |
on,O | |
the,O | |
results,O | |
of,O | |
PEX1,B-Gene | |
mutation,O | |
detection,O | |
in,O | |
an,O | |
Australasian,O | |
cohort,O | |
of,O | |
PEX1,B-Gene | |
-,I-Gene | |
deficient,O | |
PBD,O | |
patients,O | |
.,O | |
, | |
This,O | |
screen,O | |
has,O | |
identified,O | |
five,O | |
novel,O | |
mutations,O | |
,,O | |
including,O | |
nonsense,O | |
mutations,O | |
in,O | |
exons,O | |
14,O | |
and,O | |
19,O | |
and,O | |
single,O | |
nucleotide,O | |
deletions,O | |
in,O | |
exons,O | |
5,O | |
and,O | |
18,O | |
.,O | |
, | |
Significantly,O | |
,,O | |
the,O | |
allele,O | |
carrying,O | |
the,O | |
exon,O | |
18,O | |
frameshift,O | |
mutation,O | |
is,O | |
present,O | |
at,O | |
moderately,O | |
high,O | |
frequency,O | |
(,O | |
approx,O | |
.,O | |
, | |
10,O | |
%,O | |
),O | |
in,O | |
this,O | |
patient,O | |
cohort,O | |
.,O | |
, | |
The,O | |
fifth,O | |
mutation,O | |
is,O | |
a,O | |
missense,O | |
mutation,O | |
(,B-SNP | |
R798,I-SNP | |
G,I-SNP | |
),I-SNP | |
that,O | |
attenuates,O | |
,,O | |
but,O | |
does,O | |
not,O | |
abolish,O | |
PEX1,B-Gene | |
function,O | |
.,O | |
, | |
We,O | |
have,O | |
evaluated,O | |
the,O | |
cellular,O | |
impact,O | |
of,O | |
these,O | |
novel,O | |
mutations,O | |
,,O | |
along,O | |
with,O | |
that,O | |
of,O | |
the,O | |
two,O | |
most,O | |
common,O | |
PEX1,B-Gene | |
mutations,O | |
(,B-SNP | |
c.2097,I-SNP | |
-,I-SNP | |
2098insT,I-SNP | |
and,O | |
G843D,B-SNP | |
),I-SNP | |
,,O | |
in,O | |
PBD,O | |
patients,O | |
by,O | |
determining,O | |
the,O | |
levels,O | |
of,O | |
PEX1,O | |
mRNA,O | |
,,O | |
PEX1,B-Gene | |
protein,O | |
,,O | |
and,O | |
peroxisome,O | |
protein,O | |
import,O | |
.,O | |
, | |
The,O | |
findings,O | |
are,O | |
consistent,O | |
with,O | |
a,O | |
close,O | |
correlation,O | |
between,O | |
cellular,O | |
phenotype,O | |
,,O | |
disease,O | |
severity,O | |
,,O | |
and,O | |
PEX1,O | |
genotype,O | |
.,O | |
, | |
#15739154 | |
Molecular,O | |
and,O | |
clinical,O | |
analyses,O | |
of,O | |
Greig,O | |
cephalopolysyndactyly,O | |
and,O | |
Pallister,O | |
-,O | |
Hall,O | |
syndromes,O | |
:,O | |
robust,O | |
phenotype,O | |
prediction,O | |
from,O | |
the,O | |
type,O | |
and,O | |
position,O | |
of,O | |
GLI3,B-Gene | |
mutations,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
the,O | |
GLI3,B-Gene | |
zinc,B-Gene | |
-,I-Gene | |
finger,I-Gene | |
transcription,I-Gene | |
factor,I-Gene | |
gene,O | |
cause,O | |
Greig,O | |
cephalopolysyndactyly,O | |
syndrome,O | |
(,O | |
GCPS,O | |
),O | |
and,O | |
Pallister,O | |
-,O | |
Hall,O | |
syndrome,O | |
(,O | |
PHS,O | |
),O | |
,,O | |
which,O | |
are,O | |
variable,O | |
but,O | |
distinct,O | |
clinical,O | |
entities,O | |
.,O | |
, | |
We,O | |
hypothesized,O | |
that,O | |
GLI3,B-Gene | |
mutations,O | |
that,O | |
predict,O | |
a,O | |
truncated,O | |
functional,O | |
repressor,O | |
protein,O | |
cause,O | |
PHS,O | |
and,O | |
that,O | |
functional,O | |
haploinsufficiency,O | |
of,O | |
GLI3,B-Gene | |
causes,O | |
GCPS,O | |
.,O | |
, | |
To,O | |
test,O | |
these,O | |
hypotheses,O | |
,,O | |
we,O | |
screened,O | |
patients,O | |
with,O | |
PHS,O | |
and,O | |
GCPS,O | |
for,O | |
GLI3,B-Gene | |
mutations,O | |
.,O | |
, | |
The,O | |
patient,O | |
group,O | |
consisted,O | |
of,O | |
135,O | |
individuals,O | |
:,O | |
89,O | |
patients,O | |
with,O | |
GCPS,O | |
and,O | |
46,O | |
patients,O | |
with,O | |
PHS,O | |
.,O | |
, | |
We,O | |
detected,O | |
47,O | |
pathological,O | |
mutations,O | |
(,O | |
among,O | |
60,O | |
probands,O | |
),O | |
;,O | |
when,O | |
these,O | |
were,O | |
combined,O | |
with,O | |
previously,O | |
published,O | |
mutations,O | |
,,O | |
two,O | |
genotype,O | |
-,O | |
phenotype,O | |
correlations,O | |
were,O | |
evident,O | |
.,O | |
, | |
First,O | |
,,O | |
GCPS,O | |
was,O | |
caused,O | |
by,O | |
many,O | |
types,O | |
of,O | |
alterations,O | |
,,O | |
including,O | |
translocations,O | |
,,O | |
large,O | |
deletions,O | |
,,O | |
exonic,O | |
deletions,O | |
and,O | |
duplications,O | |
,,O | |
small,O | |
in,O | |
-,O | |
frame,O | |
deletions,O | |
,,O | |
and,O | |
missense,O | |
,,O | |
frameshift,O | |
/,O | |
nonsense,O | |
,,O | |
and,O | |
splicing,O | |
mutations,O | |
.,O | |
, | |
In,O | |
contrast,O | |
,,O | |
PHS,O | |
was,O | |
caused,O | |
only,O | |
by,O | |
frameshift,O | |
/,O | |
nonsense,O | |
and,O | |
splicing,O | |
mutations,O | |
.,O | |
, | |
Second,O | |
,,O | |
among,O | |
the,O | |
frameshift,O | |
/,O | |
nonsense,O | |
mutations,O | |
,,O | |
there,O | |
was,O | |
a,O | |
clear,O | |
genotype,O | |
-,O | |
phenotype,O | |
correlation,O | |
.,O | |
, | |
Mutations,O | |
in,O | |
the,O | |
first,O | |
third,O | |
of,O | |
the,O | |
gene,O | |
(,O | |
from,O | |
open,O | |
reading,O | |
frame,O | |
[,O | |
ORF,O | |
],O | |
nucleotides,O | |
[,O | |
nt,O | |
],O | |
1,O | |
-,O | |
1997,O | |
),O | |
caused,O | |
GCPS,O | |
,,O | |
and,O | |
mutations,O | |
in,O | |
the,O | |
second,O | |
third,O | |
of,O | |
the,O | |
gene,O | |
(,O | |
from,O | |
ORF,O | |
nt,O | |
1998,O | |
-,O | |
3481,O | |
),O | |
caused,O | |
primarily,O | |
PHS,O | |
.,O | |
, | |
Surprisingly,O | |
,,O | |
there,O | |
were,O | |
12,O | |
mutations,O | |
in,O | |
patients,O | |
with,O | |
GCPS,O | |
in,O | |
the,O | |
3,O | |
',O | |
third,O | |
of,O | |
the,O | |
gene,O | |
(,O | |
after,O | |
ORF,O | |
nt,O | |
3481,O | |
),O | |
,,O | |
and,O | |
no,O | |
patients,O | |
with,O | |
PHS,O | |
had,O | |
mutations,O | |
in,O | |
this,O | |
region,O | |
.,O | |
, | |
These,O | |
results,O | |
demonstrate,O | |
a,O | |
robust,O | |
correlation,O | |
of,O | |
genotype,O | |
and,O | |
phenotype,O | |
for,O | |
GLI3,B-Gene | |
mutations,O | |
and,O | |
strongly,O | |
support,O | |
the,O | |
hypothesis,O | |
that,O | |
these,O | |
two,O | |
allelic,O | |
disorders,O | |
have,O | |
distinct,O | |
modes,O | |
of,O | |
pathogenesis,O | |
.,O | |
, | |
#7942859 | |
The,O | |
power,O | |
of,O | |
interval,O | |
mapping,O | |
of,O | |
quantitative,O | |
trait,O | |
loci,O | |
,,O | |
using,O | |
selected,O | |
sib,O | |
pairs,O | |
.,O | |
, | |
The,O | |
interval,O | |
-,O | |
mapping,O | |
procedure,O | |
of,O | |
Fulker,O | |
and,O | |
Cardon,O | |
for,O | |
analysis,O | |
of,O | |
a,O | |
quantitative,O | |
-,O | |
trait,O | |
loci,O | |
(,O | |
QTL,O | |
),O | |
is,O | |
extended,O | |
for,O | |
application,O | |
to,O | |
selected,O | |
samples,O | |
of,O | |
sib,O | |
pairs,O | |
.,O | |
, | |
Phenotypic,O | |
selection,O | |
of,O | |
sib,O | |
pairs,O | |
,,O | |
which,O | |
is,O | |
known,O | |
to,O | |
yield,O | |
striking,O | |
increases,O | |
in,O | |
power,O | |
when,O | |
a,O | |
single,O | |
marker,O | |
is,O | |
used,O | |
,,O | |
provides,O | |
further,O | |
increases,O | |
in,O | |
power,O | |
when,O | |
the,O | |
interval,O | |
-,O | |
mapping,O | |
approach,O | |
is,O | |
used,O | |
.,O | |
, | |
The,O | |
greatest,O | |
benefits,O | |
of,O | |
the,O | |
combined,O | |
approach,O | |
are,O | |
apparent,O | |
with,O | |
coarse,O | |
maps,O | |
,,O | |
where,O | |
QTLs,O | |
of,O | |
relatively,O | |
modest,O | |
(,O | |
15%-20,O | |
%,O | |
),O | |
heritability,O | |
can,O | |
be,O | |
detected,O | |
with,O | |
widely,O | |
spaced,O | |
markers,O | |
(,O | |
40,O | |
-,O | |
60,O | |
cM,O | |
apart,O | |
),O | |
in,O | |
reasonably,O | |
sized,O | |
sibling,O | |
samples,O | |
.,O | |
, | |
Useful,O | |
information,O | |
concerning,O | |
QTL,O | |
location,O | |
is,O | |
afforded,O | |
by,O | |
interval,O | |
mapping,O | |
in,O | |
both,O | |
selected,O | |
and,O | |
unselected,O | |
samples,O | |
.,O | |
, | |
#17701907 | |
Evidence,O | |
of,O | |
still,O | |
-,O | |
ongoing,O | |
convergence,O | |
evolution,O | |
of,O | |
the,O | |
lactase,O | |
persistence,O | |
T-13910,O | |
alleles,O | |
in,O | |
humans,O | |
.,O | |
, | |
A,O | |
single,O | |
-,O | |
nucleotide,O | |
variant,O | |
,,O | |
C,B-SNP | |
/,I-SNP | |
T(-13910,I-SNP | |
),I-SNP | |
,,I-SNP | |
located,O | |
14,O | |
kb,O | |
upstream,O | |
of,O | |
the,O | |
lactase,B-Gene | |
gene,O | |
(,B-Gene | |
LCT,I-Gene | |
),I-Gene | |
,,O | |
has,O | |
been,O | |
shown,O | |
to,O | |
be,O | |
completely,O | |
correlated,O | |
with,O | |
lactase,O | |
persistence,O | |
(,O | |
LP,O | |
),O | |
in,O | |
northern,O | |
Europeans,O | |
.,O | |
, | |
Here,O | |
,,O | |
we,O | |
analyzed,O | |
the,O | |
background,O | |
of,O | |
the,O | |
alleles,O | |
carrying,O | |
the,O | |
critical,O | |
variant,O | |
in,O | |
1,611,O | |
DNA,O | |
samples,O | |
from,O | |
37,O | |
populations,O | |
.,O | |
, | |
Our,O | |
data,O | |
show,O | |
that,O | |
the,O | |
T(-13910,O | |
),O | |
variant,O | |
is,O | |
found,O | |
on,O | |
two,O | |
different,O | |
,,O | |
highly,O | |
divergent,O | |
haplotype,O | |
backgrounds,O | |
in,O | |
the,O | |
global,O | |
populations,O | |
.,O | |
, | |
The,O | |
first,O | |
is,O | |
the,O | |
most,O | |
common,O | |
LP,O | |
haplotype,O | |
(,O | |
LP,O | |
H98,O | |
),O | |
present,O | |
in,O | |
all,O | |
populations,O | |
analyzed,O | |
,,O | |
whereas,O | |
the,O | |
others,O | |
(,O | |
LP,O | |
H8,O | |
-,O | |
H12,O | |
),O | |
,,O | |
which,O | |
originate,O | |
from,O | |
the,O | |
same,O | |
ancestral,O | |
allelic,O | |
haplotype,O | |
,,O | |
are,O | |
found,O | |
in,O | |
geographically,O | |
restricted,O | |
populations,O | |
living,O | |
west,O | |
of,O | |
the,O | |
Urals,O | |
and,O | |
north,O | |
of,O | |
the,O | |
Caucasus,O | |
.,O | |
, | |
The,O | |
global,O | |
distribution,O | |
pattern,O | |
of,O | |
LP,O | |
T(-13910,O | |
),O | |
H98,O | |
supports,O | |
the,O | |
Caucasian,O | |
origin,O | |
of,O | |
this,O | |
allele,O | |
.,O | |
, | |
Age,O | |
estimates,O | |
based,O | |
on,O | |
different,O | |
mathematical,O | |
models,O | |
show,O | |
that,O | |
the,O | |
common,O | |
LP,O | |
T(-13910,O | |
),O | |
H98,O | |
allele,O | |
(,O | |
approximately,O | |
5,000,O | |
-,O | |
12,000,O | |
years,O | |
old,O | |
),O | |
is,O | |
relatively,O | |
older,O | |
than,O | |
the,O | |
other,O | |
geographically,O | |
restricted,O | |
LP,O | |
alleles,O | |
(,O | |
approximately,O | |
1,400,O | |
-,O | |
3,000,O | |
years,O | |
old,O | |
),O | |
.,O | |
, | |
Our,O | |
data,O | |
about,O | |
global,O | |
allelic,O | |
haplotypes,O | |
of,O | |
the,O | |
lactose,O | |
-,O | |
tolerance,O | |
variant,O | |
imply,O | |
that,O | |
the,O | |
T(-13910,O | |
),O | |
allele,O | |
has,O | |
been,O | |
independently,O | |
introduced,O | |
more,O | |
than,O | |
once,O | |
and,O | |
that,O | |
there,O | |
is,O | |
a,O | |
still,O | |
-,O | |
ongoing,O | |
process,O | |
of,O | |
convergent,O | |
evolution,O | |
of,O | |
the,O | |
LP,O | |
alleles,O | |
in,O | |
humans,O | |
.,O | |
, | |