Traits

Traits linked to RD3

RD3 regulator of GUCY2D

The Human Phenotype Ontology links 27 traits to RD3, 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 optic disc morphology	Very often (80–99%)
Abnormal retinal pigmentation	Very often (80–99%)
Marked vision impairment	Very often (80–99%)
Abnormal electroretinogram	Often (30–79%)
Abnormal full-field electroretinogram	Often (30–79%)
Bulging cornea	Often (30–79%)
Clouding of the lens of the eye	Often (30–79%)
Extreme sensitivity of the eyes to light	Often (30–79%)
Farsightedness	Often (30–79%)
Involuntary, rapid, rhythmic eye movements	Often (30–79%)
Slow pupillary light response	Often (30–79%)
Optic disc drusen	Sometimes (5–29%)
Optic disc pallor	Sometimes (5–29%)
Abnormal macular pigmentation	Not recorded
Blindness present at birth	Not recorded

Abnormality of the nervous system

Trait	How often it is seen
Abnormality of neuronal migration	Often (30–79%)
Aplasia/Hypoplasia of the cerebellar vermis	Often (30–79%)
Epilepsy	Often (30–79%)
Eye poking	Often (30–79%)
Paralysis or weakness of one side of body	Often (30–79%)
Autism spectrum disorder	Sometimes (5–29%)
Global developmental delay	Sometimes (5–29%)
Intellectual disability	Sometimes (5–29%)
Motor delay	Sometimes (5–29%)

Abnormality of head or neck

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

Abnormality of the ear

Trait	How often it is seen
Hearing impairment	Sometimes (5–29%)

Abnormality of the musculoskeletal system

Trait	How often it is seen
Low muscle tone	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 RD3 and how often each is seen. Find out more at hpo.jax.org.

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