Trait
Firm muscles
A state of increased firmness (i.e., a reduced tendency to yield to pressure) of skeletal muscle tissue. This finding is ascertained by palpation and is to be distinguished from increased muscle tone (abnormal elevation in the resting tension of a muscle, leading to stiffness and resistance to movement).
Summary
- Body system
- Abnormality of the musculoskeletal system
Reference genomeGRCh38hg38
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Changes in these genes cause rare conditions in which Firm muscles 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.
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
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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