Clinical trial NCT01161953: Genetic Epidemiology of Primary Biliary Cirrhosis (PBC)
Official title: Understanding the Genetic Predisposition to the Development of Primary Biliary Cirrhosis (PBC).
Study type: OBSERVATIONAL
Overall status: ACTIVE_NOT_RECRUITING
Conditions: Primary Biliary Cirrhosis
Keywords: Primary Biliary Cirrhosis
PBC
Cholestatic Liver Disease
Lead sponsor: Mayo Clinic
Sponsor class: OTHER
First posted: 2010-07-14
Enrollment: 1500
Sex: ALL
Minimum age (years): 18
Maximum age (years): 90
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: FAMILY_BASED
Time perspective: OTHER
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Subjects who are patients at Mayo Clinic and are seen in the department of Gastroenterology and Hepatology are recruited by mail and carry a diagnosis of PBC. Subjects who are not Mayo Clinic patients are encouraged to contact the study coordinator by phone or email to request enrollment.

Brief summary: Primary Biliary Cirrhosis (PBC) is a progressive liver disorder of unknown cause. Current evidence suggests that genes, the genetic material we inherit from our parents, in combination with environmental factors, likely play an important role in the development of PBC.

This study is being done to investigate whether genes make people more likely to develop PBC. Discovery of these proposed genes will help us better understand how PBC developes, and subsequently, to apply new approaches for its prevention, diagnosis and treatment.


Eligibility criteria: Inclusion Criteria:

* Men and women between the ages of 18-90 who have a history of PBC.
* PBC patients who have undergone a liver transplant are eligible.
* Family members (1st degree relatives) of enrolled PBC patients are eligible.

Exclusion Criteria:

* Individuals with no history of PBC or those unable to provide consent.

Primary outcomes:
measure: Mapping of Susceptibility Genes in Adult Chronic Cholestatic Liver Diseases
Secondary outcomes:
Other outcomes:
Locations:
city: Rochester
country: United States
facility: Mayo Clinic
state: Minnesota
Study officials:
affiliation: Mayo Clinic
name: Konstantinos N Lazaridis, M.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Lazaridis KN, Juran BD, Boe GM, Slusser JP, de Andrade M, Homburger HA, Ghosh K, Dickson ER, Lindor KD, Petersen GM. Increased prevalence of antimitochondrial antibodies in first-degree relatives of patients with primary biliary cirrhosis. Hepatology. 2007 Sep;46(3):785-92. doi: 10.1002/hep.21749.
citation: Juran BD, Atkinson EJ, Larson JJ, Schlicht EM, Liu X, Heathcote EJ, Hirschfield GM, Siminovitch KA, Lazaridis KN. Carriage of a tumor necrosis factor polymorphism amplifies the cytotoxic T-lymphocyte antigen 4 attributed risk of primary biliary cirrhosis: evidence for a gene-gene interaction. Hepatology. 2010 Jul;52(1):223-9. doi: 10.1002/hep.23667.
citation: Juran BD, Atkinson EJ, Larson JJ, Schlicht EM, Lazaridis KN. Common genetic variation and haplotypes of the anion exchanger SLC4A2 in primary biliary cirrhosis. Am J Gastroenterol. 2009 Jun;104(6):1406-11. doi: 10.1038/ajg.2009.103. Epub 2009 Apr 21.
citation: Juran BD, Atkinson EJ, Schlicht EM, Fridley BL, Petersen GM, Lazaridis KN. Interacting alleles of the coinhibitory immunoreceptor genes cytotoxic T-lymphocyte antigen 4 and programmed cell-death 1 influence risk and features of primary biliary cirrhosis. Hepatology. 2008 Feb;47(2):563-70. doi: 10.1002/hep.22048.
citation: Juran BD, Atkinson EJ, Schlicht EM, Fridley BL, Lazaridis KN. Primary biliary cirrhosis is associated with a genetic variant in the 3' flanking region of the CTLA4 gene. Gastroenterology. 2008 Oct;135(4):1200-6. doi: 10.1053/j.gastro.2008.06.077. Epub 2008 Jul 1.
citation: Lammert C, Nguyen DL, Juran BD, Schlicht E, Larson JJ, Atkinson EJ, Lazaridis KN. Questionnaire based assessment of risk factors for primary biliary cirrhosis. Dig Liver Dis. 2013 Jul;45(7):589-94. doi: 10.1016/j.dld.2013.01.028. Epub 2013 Mar 11.
citation: Lammert C, Juran BD, Schlicht E, Chan LL, Atkinson EJ, de Andrade M, Lazaridis KN. Biochemical response to ursodeoxycholic acid predicts survival in a North American cohort of primary biliary cirrhosis patients. J Gastroenterol. 2014 Oct;49(10):1414-20. doi: 10.1007/s00535-013-0903-1. Epub 2013 Dec 8.
citation: Lammert C, Juran BD, Schlicht E, Xie X, Atkinson EJ, de Andrade M, Lazaridis KN. Reduced coffee consumption among individuals with primary sclerosing cholangitis but not primary biliary cirrhosis. Clin Gastroenterol Hepatol. 2014 Sep;12(9):1562-8. doi: 10.1016/j.cgh.2013.12.036. Epub 2014 Jan 16.