Traits

Traits linked to MYO7A

myosin VIIA

The Human Phenotype Ontology links 29 traits to MYO7A, by body system: features seen in people with one of the gene's rare conditions.

Abnormality of the eye

Trait	How often it is seen
Abnormal electroretinogram	Always
Involuntary, rapid, rhythmic eye movements	Always
Rod-cone dystrophy	Always
Visual loss	Always
Blind spot	Very often (80–99%)
Difficulties with night vision	Very often (80–99%)
Light eye color	Very often (80–99%)
Close sighted	Often (30–79%)
Clouding of the lens of the eye	Often (30–79%)
Decreased clarity of vision	Often (30–79%)
Limited peripheral vision	Often (30–79%)
Loss of peripheral vision	Often (30–79%)
Abnormal color vision	Sometimes (5–29%)
Reduced contrast sensitivity	Sometimes (5–29%)
Undetectable electroretinogram	Not recorded

Abnormality of the ear

Trait	How often it is seen
Sensorineural hearing impairment	Always
Abnormal cochlea morphology	Very often (80–99%)
Abnormality of the inner ear	Very often (80–99%)
Abnormal vestibular function	Often (30–79%)
Absent vestibular function	Not recorded
Bilateral sensorineural hearing impairment	Not recorded
Dizziness	Not recorded

Abnormality of the nervous system

Trait	How often it is seen
Abnormality of balance	Often (30–79%)
Delayed speech and language development	Often (30–79%)
Difficulty sleeping	Often (30–79%)
Motor delay	Often (30–79%)
Anxiety	Sometimes (5–29%)
Depression	Sometimes (5–29%)

Constitutional symptom

Trait	How often it is seen
Fatigue	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 MYO7A and how often each is seen. Find out more at hpo.jax.org.

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