Traits

Traits linked to RNH1

ribonuclease/angiogenin inhibitor 1

The Human Phenotype Ontology links 15 traits to RNH1, 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
Encephalopathy	Always
Persistent head lag	Always
Seizure affecting one half of brain	Always
Clonic seizure	Often (30–79%)
Developmental stagnation	Often (30–79%)
Grand mal seizures	Often (30–79%)
Obstructive sleep apnea	Often (30–79%)

Abnormality of head or neck

Trait	How often it is seen
Narrow mouth	Often (30–79%)
Recurrent colds	Often (30–79%)

Abnormality of the digestive system

Trait	How often it is seen
Feeding difficulties	Always
Episodic vomiting	Often (30–79%)

Abnormality of the eye

Trait	How often it is seen
Clouding of the lens of the eye	Always
Exophoria	Often (30–79%)

Abnormality of the musculoskeletal system

Trait	How often it is seen
Low muscle tone	Always

Abnormality of the respiratory system

Trait	How often it is seen
Respiratory function loss	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 RNH1 and how often each is seen. Find out more at hpo.jax.org.

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