Question: What are the symptoms of 1q44 microdeletion syndrome ?
Answer: What are the signs and symptoms of 1q44 microdeletion syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for 1q44 microdeletion syndrome. If the information is available, the table below includes how often the symptom is seen in people with this condition. You can use the MedlinePlus Medical Dictionary to look up the definitions for these medical terms. Signs and Symptoms Approximate number of patients (when available) Cognitive impairment 90% Muscular hypotonia 90% Neurological speech impairment 90% Seizures 90% Thin vermilion border 90% Abnormality of the cardiac septa 50% Abnormality of the philtrum 50% Aplasia/Hypoplasia of the corpus callosum 50% Hypertelorism 50% Microcephaly 50% Short stature 50% Strabismus 50% Telecanthus 50% Upslanted palpebral fissure 50% Ventriculomegaly 50% Abnormality of the palate 7.5% Displacement of the external urethral meatus 7.5% Frontal bossing 7.5% High forehead 7.5% Hydrocephalus 7.5% Intestinal malrotation 7.5% Narrow forehead 7.5% Optic atrophy 7.5% Preauricular skin tag 7.5% Prominent metopic ridge 7.5% Renal hypoplasia/aplasia 7.5% Scoliosis 7.5% Synophrys 7.5% The Human Phenotype Ontology (HPO) has collected information on how often a sign or symptom occurs in a condition. Much of this information comes from Orphanet, a European rare disease database. The frequency of a sign or symptom is usually listed as a rough estimate of the percentage of patients who have that feature. The frequency may also be listed as a fraction. The first number of the fraction is how many people had the symptom, and the second number is the total number of people who were examined in one study. For example, a frequency of 25/25 means that in a study of 25 people all patients were found to have that symptom. Because these frequencies are based on a specific study, the fractions may be different if another group of patients are examined. Sometimes, no information on frequency is available. In these cases, the sign or symptom may be rare or common.
Source: GARD