Trait

Prominent antitragus

Increased anterosuperior prominence of the area between the bottom of the incisura and the inner margin of the antihelix.

HPO HP:0008593

Also called: Enlarged antitragus, Hyperplastic antitragus, Hypertrophic antitragus
Body system: Abnormality of the ear

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6 genes linked to Prominent antitragus

Changes in these genes cause rare conditions in which Prominent antitragus is seen. Most people with this trait have none of those conditions, and a gene on this list says nothing about anyone's own genome.

Gene	How often it is seen	Conditions
KAT6Alysine acetyltransferase 6A	Often (30–79%)	In 1 condition
B3GAT3beta-1,3-glucuronyltransferase 3	Sometimes (5–29%)	In 1 condition
CHST3carbohydrate sulfotransferase 3	Sometimes (5–29%)	In 1 condition
PGM2L1phosphoglucomutase 2 like 1	Sometimes (5–29%)	In 1 condition
PIGKphosphatidylinositol glycan anchor biosynthesis class K	Not recorded	In 1 condition
RAB3GAP2RAB3 GTPase activating non-catalytic protein subunit 2	Not recorded	In 1 condition

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.

Broader traits

Abnormal antitragus morphology

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the trait, its names, its definition and the genes linked to it. Find out more at hpo.jax.org.
Data release 2026.10.16-c6eea6bf.

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