Trait

Abnormal subungual morphology

A lesion located beneath a fingernail or toenail.

Also called: Abnormality of the subungual region
Body system: Abnormality of the integument

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page <- fromJSON(url)
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1 gene linked to Abnormal subungual morphology

Changes in these genes cause rare conditions in which Abnormal subungual 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.

Gene	How often it is seen	Conditions
COL7A1collagen type VII alpha 1 chain	Often (30–79%)	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

Abnormality of the nail

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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