Traits

Traits linked to KIF4A

kinesin family member 4A

The Human Phenotype Ontology links 5 traits to KIF4A, 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 speech and language development	Always
Intellectual disability	Always
Brief seizures with staring spells	Very often (80–99%)
Grand mal seizures	Very often (80–99%)

Abnormality of head or neck

Trait	How often it is seen
Abnormal facial shape	Not recorded

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 KIF4A and how often each is seen. Find out more at hpo.jax.org.

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