HLA-B (P01889) variants and mutations

HLA-B (also known as P01889) is a human protein-coding gene encoding a HLA class I histocompatibility antigen, B alpha chain protein. It displays intracellularly derived peptides for surveillance by cytotoxic T cells and natural-killer-cell receptors. Specific alleles have major pharmacogenomic importance, including HLA-B*57:01 for abacavir hypersensitivity and HLA-B*15:02 for severe cutaneous reactions to selected antiseizure drugs. This analysis covers 1,203 HLA-B variants and mutations. Of these, 93% have computational variant effect predictions. Disease context includes COVID-19, neurodegenerative disease, and diffuse large B-cell lymphoma. Example HLA-B variants include L2P, L2Q, and L2R.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, MaveDB, LitVar.

Notable HLA-B variants

Examples include L2P, L2Q, L2R, L2V, V3A, V3I, M4I, M4K. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.