Traits

Traits linked to KNG1

kininogen 1

The Human Phenotype Ontology links 6 traits to KNG1, by body system: features seen in people with one of the gene's rare conditions.

Abnormality of blood and blood-forming tissues

Trait	How often it is seen
Prolonged partial thromboplastin time	Not recorded
Reduced kininogen activity	Not recorded

Abnormality of head or neck

Trait	How often it is seen
Facial puffiness	Very often (80–99%)
Swollen lip	Very often (80–99%)

Laboratory abnormality

Trait	How often it is seen
Angioedema	Always
Edema of the dorsum of hands	Often (30–79%)

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.

Where this comes from

The Human Phenotype Ontology, release 2026-09-01: the traits linked to KNG1 and how often each is seen. Find out more at hpo.jax.org.

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