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Start free with EleplanCHD8 overgrowth syndrome
ORPHA:642675Disease
Also called CHD8-related intellectual disability-autism-macrocephaly-tall stature syndrome · Chromodomain helicase DNA binding protein 8 overgrowth syndrome
What it is
A rare multiple congenital anomalies/dysmorphic syndrome characterized by mild to moderate intellectual disability, autism spectrum phenotype, macrocephaly, tall stature, gastrointestinal problems (including recurrent constipation), distinctive facial features (including wide-set eyes with down-slanted palpebral fissure, broad nose with full nasal tip, pointed chin and broad forehead with prominent supraorbital ridge) and sleep problems. Other clinical manifestations include anxiety problems, attention problems, impaired social interactions and seizures.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- No data available
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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