Traits

Traits linked to NCDN

neurochondrin

The Human Phenotype Ontology links 12 traits to NCDN, by body system: features seen in people with one of the gene's rare conditions.

Abnormality of the nervous system

Trait	How often it is seen
Delayed ability to walk	Always
Delayed speech and language development	Always
Epileptic spasm	Always
Intellectual disability	Always
Delayed CNS myelination	Often (30–79%)
Myoclonic seizure	Often (30–79%)
Seizure affecting one half of brain	Often (30–79%)

Abnormality of head or neck

Trait	How often it is seen
Eye folds	Often (30–79%)
High palate	Often (30–79%)

Abnormality of the eye

Trait	How often it is seen
Inward turning cross eyed	Often (30–79%)
Wide-set eyes	Often (30–79%)

Growth abnormality

Trait	How often it is seen
Short stature	Often (30–79%)

How often is among people with one of the gene's conditions, the most often across them, as the Human Phenotype Ontology records it. These pages describe traits and the research behind them; they are not a diagnosis, and a doctor or genetic counsellor is the person to ask about symptoms.

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the traits linked to NCDN and how often each is seen. Find out more at hpo.jax.org.

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