OnCo

HLA-C (HLA class I histocompatibility antigen, C alpha chain) is a gene whose normal job is to hold cell growth in check. The public catalogues list it as a drug target, a tumour suppressor and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Colorectal cancer and Diffuse large B-cell lymphoma. This dossier gathers the 0 products (0 approved), 0 trials, 0 pathways and 0 resistance routes in the corpus that involve it, with external identifiers so it can be joined to UniProt, ChEMBL, Open Targets and the rest of biology.

Biology

Antigen-presenting major histocompatibility complex class I (MHCI) molecule with an important role in reproduction and antiviral immunity. In complex with B2M/beta 2 microglobulin displays a restricted repertoire of self and viral peptides and acts as a dominant ligand for inhibitory and activating killer immunoglobulin receptors (KIRs) expressed on NK cells. In an allogeneic setting, such as during pregnancy, mediates interaction of extravillous trophoblasts with KIR on uterine NK cells and regulate trophoblast invasion necessary for placentation and overall fetal growth. During viral infection, may present viral peptides with low affinity for KIRs, impeding KIR-mediated inhibition through peptide antagonism and favoring lysis of infected cells. Presents a restricted repertoire of viral peptides on antigen-presenting cells for recognition by alpha-beta T cell receptor (TCR) on HLA-C-restricted CD8-positive T cells, guiding antigen-specific T cell immune response to eliminate infected cells, particularly in chronic viral infection settings such as HIV-1 or CMV infection. Both the peptide and the MHC molecule are recognised by TCR, the peptide is responsible for the fine specificity of antigen recognition and MHC residues account for the MHC restriction of T cells. Location: Cell membrane; Endoplasmic reticulum membrane (UniProt). Locus 6p21.33 (HGNC).

Where it is found
  • Colorectal cancer: CIViC evidence names this disease
  • Diffuse large B-cell lymphoma: CIViC evidence names this disease; IntOGen driver in 1 cohort (DLBCLNOS)
Class: tumor suppressor · Gene: HLA-C · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

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Resistance routes

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Companion diagnostics

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Literature

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Query for this target: (TITLE:"HLA-C" OR ABSTRACT:"HLA-C" OR TITLE:"major histocompatibility complex, class I, C" OR ABSTRACT:"major histocompatibility complex, class I, C" OR TITLE:"HLA class I histocompatibility antigen, C alpha chain" OR ABSTRACT:"HLA class I histocompatibility antigen, C alpha chain" OR TITLE:"HLA-JY3" OR ABSTRACT:"HLA-JY3" OR TITLE:"D6S204" OR ABSTRACT:"D6S204" OR TITLE:"PSORS1" OR ABSTRACT:"PSORS1") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about HLA-C, not a curated reading list.

Export

The dossier as machine-readable JSON: identifiers from HGNC, Ensembl, UniProt and ChEMBL, products with status, trials, pathways, hotspots, open questions and assays. The full entity record is in the open API at /api/v1/entities/hla-c.json. Licence CC BY-NC 4.0.