The information provided on this page is for informational purposes only. The National Organization for Rare Disorders (NORD) does not endorse the information presented. The content has been gathered in partnership with the MONDO Disease Ontology. Please consult with a healthcare professional for medical advice and treatment.
Connect & DownloadDistal trisomy 8q is a rare chromosomal anomaly syndrome resulting from the partial duplication of the long arm of chromosome 8, with a highly variable phenotype, typically characterized by growth and developmental delay, intellectual disability, short stature, craniofacial dysmorphism (microcephaly, prominent forehead, hypertelorism, abnormal palpebral fissures, low-set, large ears, anteverted tip of nose, micro/retrognathia), congenital heart defects and skeletal and limb anomalies. Other reported features include ophthalmologic abnormalities (e.g. megalocornea), cryptorchidism, hypertrichosis, and neurologic manifestations (e.g. hypotonia, hearing loss, and seizures).
The Genetic and Rare Diseases Information Center (GARD) has information and resources for patients, caregivers, and families that may be helpful before and after diagnosis of this condition. GARD is a program of the National Center for Advancing Translational Sciences (NCATS), part of the National Institutes of Health (NIH).
View reportOrphanet has a summary about this condition that may include information on the diagnosis, care, and treatment as well as other resources. Some of the information and resources are available in languages other than English. The summary may include medical terms, so we encourage you to share and discuss this information with your doctor. Orphanet is the French National Institute for Health and Medical Research and the Health Programme of the European Union.
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