Trait

Shortened 3rd long bone of hand

Clinical name: Short 3rd metacarpal

Short third metacarpal bone.

HPO HP:0010041

Also called: Hypoplastic 3rd metacarpal, Short third metacarpals, Small 3rd metacarpals
Body system: Abnormality of limbs Abnormality of the musculoskeletal system

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4 genes linked to Shortened 3rd long bone of hand

Changes in these genes cause rare conditions in which Shortened 3rd long bone of hand 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
GNASGNAS complex locus	Sometimes (5–29%)	In 2 conditions
LBRlamin B receptor	Sometimes (5–29%)	In 1 condition
SVBPsmall vasohibin binding protein	Sometimes (5–29%)	In 1 condition
FLNAfilamin A	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

Absent/small 3rd long bone of hand Shortened long bone of 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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