Neurodevelopmental delay-intellectual…

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Neurodevelopmental delay-intellectual disability-ataxia-feeding difficulty syndrome

ORPHA:647788Disease

Also called DHX30-related neurodevelopmental delay-intellectual disability-ataxia-feeding difficulty syndrome · DHX30-related neurodevelopmental disorder

What it is

A rare syndromic intellectual disability without congenital anomalies/specific dysmorphic phenotype characterized by delayed psychomotor development, severe intellectual disability, delayed or absent speech development, hypotonia, ataxic gait and feeding difficulties. Clinical symptoms are evident from early infancy. Majority of the patients also present with behavioral abnormalities (including autistic features, aggressive behavior, low frustration tolerance, and stereotypies such as hand-flapping). Additional clinical features may include inability to walk, seizures, hearing loss, sleep abnormalities, joint hyperlaxity. Nonspecific dysmorphic facial features (small head, strabismus, epicanthal folds, synophrys, high palate, low-set ears, orofacial hypotonia, full eyelids, and eversion of the lower lip) may also be present.

Key facts

Inheritance
Autosomal dominant
Classified as
Disease

Gene

DHX30Disease-causing germline mutation(s)

ICD-10 codes

G11.8filed under a broader ICD-10 category — shared with 38 other rare diseases

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

MONDO 0060622OMIM 617804UMLS C5816755

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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