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Gene Explorer / MSTN

MSTN

TraitFunStrong evidenceBackground

Rare variants linked to unusually large, strong muscles.

Myostatin normally limits muscle growth. Loss-of-function MSTN variants show up in people - and some cattle - with remarkable muscle mass. Extremely rare in humans, but the “double muscle gene” is real.

Also known as: myostatin, double muscle

Associated with

  • muscle
  • myostatin
  • strength
  • bodybuilding

Educational only. Significant findings should be reviewed with a clinician.

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Educational reference only — not a diagnosis. Discuss significant findings with a clinician.