Rare diseases · Sign or symptom

Abnormality of prothrombin

HP:0012200

What it means

An anomaly of clotting factor II, which is known as prothrombin, a vitamin K-dependent proenzyme that functions in the blood coagulation cascade.

Part of the broader category

Abnormality of prothrombin

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.