Traits

Traits linked to OGT

O-linked N-acetylglucosamine (GlcNAc) transferase

The Human Phenotype Ontology links 19 traits to OGT, by body system: features seen in people with one of the gene's rare conditions.

Abnormality of head or neck

Trait	How often it is seen
Full lips	Always
Abnormally small head	Often (30–79%)
Monobrow	Often (30–79%)
Open mouth	Often (30–79%)
Thin red part of the upper lip	Often (30–79%)

Abnormality of the eye

Trait	How often it is seen
Wide-set eyes	Always
Involuntary, rapid, rhythmic eye movements	Often (30–79%)
Lazy eye	Often (30–79%)
Severe farsightedness	Often (30–79%)

Abnormality of the genitourinary system

Trait	How often it is seen
Decreased testicular size	Often (30–79%)
Hypospadias	Often (30–79%)
Undescended testes	Not recorded

Abnormality of limbs

Trait	How often it is seen
Curvature of digit	Always
Curvature of little finger	Always

Abnormality of the nervous system

Trait	How often it is seen
Global developmental delay	Always
Intellectual disability	Always

Abnormality of the cardiovascular system

Trait	How often it is seen
Aortic valve has two leaflets rather than three	Often (30–79%)

Abnormality of the ear

Trait	How often it is seen
Low-set ears	Always

Abnormality of the integument

Trait	How often it is seen
Frontal upsweep of hair	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 OGT and how often each is seen. Find out more at hpo.jax.org.

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