Autozomálně dominantní
Caused by changes in one copy of the DHX30 gene, which makes an RNA helicase. Many changes are missense changes in key parts of the protein, and several reported cases arose de novo; changes that switch off one copy tend to cause a milder picture.
Příznaky a projevy
Severe global developmental delay and intellectual disability, with severe speech impairment or absent language. Gait abnormalities are common, and motor development is severely delayed. Feeding difficulties, sleep problems and autistic features are common. Seizures can also occur.
Co se diagnózou změní
Developmental, physiotherapy, communication and feeding support, with assessment of sleep and seizures. Several reported cases arose de novo, but genetic counselling and parental testing help clarify recurrence risk.
Analyzované geny
Známé také jako
DHX30 syndrome; DHX30-related complex neurodevelopmental disorder; NEDMIAL; neurodevelopmental delay-intellectual disability-ataxia-feeding difficulty syndrome
