Trait

Ulnar deviated club hands

HPO HP:0006055

Body system: Abnormality of limbs

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4 genes linked to Ulnar deviated club hands

Changes in these genes cause rare conditions in which Ulnar deviated club hands 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
COL9A1collagen type IX alpha 1 chain	Sometimes (5–29%)	In 1 condition
COL9A2collagen type IX alpha 2 chain	Sometimes (5–29%)	In 1 condition
COL9A3collagen type IX alpha 3 chain	Sometimes (5–29%)	In 1 condition
PCDHGC4protocadherin gamma subfamily C, 4	Sometimes (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.

Broader traits

Ulnar deviation of the hand

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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