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Trait

Abnormal antitragus morphology

An abnormality of the antitragus, which is a small tubercle opposite to the tragus of the ear. The antitragus and the tragus are separated by the intertragic notch.

HPO HP:0009896

Summary

Body system
Abnormality of the ear

3 genes linked to Abnormal antitragus morphology

Changes in these genes cause rare conditions in which Abnormal antitragus morphology 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.

GeneHow often it is seenConditions
PNPLA6patatin like domain 6, lysophospholipaseVery often (80–99%)In 1 condition
COL2A1collagen type II alpha 1 chainSometimes (5–29%)In 1 condition
FN1fibronectin 1Sometimes (5–29%)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.

Narrower traits

Broader traits

Abnormally shaped ears

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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