Rare diseases · Sign or symptom

Abnormal B cell subset distribution

HP:0025539

What it means

Abnormal increase or decrease of any B cell subpopulation, measured as percentage of total CD19+ or CD20+ B cells in the blood, compared to a reference range for a given sex and age-group.

Part of the broader category

Abnormal B cell subset distribution

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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.