Question: What are the symptoms of 8p23.1 duplication syndrome ?
Answer: What are the signs and symptoms of 8p23.1 duplication syndrome? The Human Phenotype Ontology provides the following list of signs and symptoms for 8p23.1 duplication 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) Abnormality of chromosome segregation 90% Cognitive impairment 50% Highly arched eyebrow 50% Neurological speech impairment 50% Abnormality of the nose 7.5% Abnormality of the pulmonary valve 7.5% Abnormality of the upper urinary tract 7.5% Deeply set eye 7.5% Exostoses 7.5% Hearing impairment 7.5% Hypertelorism 7.5% Long philtrum 7.5% Primary adrenal insufficiency 7.5% Tetralogy of Fallot 7.5% Thick lower lip vermilion 7.5% Toe syndactyly 7.5% Ventricular septal defect 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