OnCo

RAD51B (DNA repair protein RAD51 homolog 2) is a gene. The public catalogues list it as a drug target, a biomarker, a fusion partner and a DNA repair gene, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Breast cancer, Prostate cancer, Ovarian cancer and 2 more. 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

Involved in the homologous recombination repair (HRR) pathway of double-stranded DNA breaks arising during DNA replication or induced by DNA-damaging agents. May promote the assembly of presynaptic RAD51 nucleoprotein filaments. Binds single-stranded DNA and double-stranded DNA and has DNA-dependent ATPase activity. Part of the RAD51 paralog protein complex BCDX2 which acts in the BRCA1-BRCA2-dependent HR pathway. Upon DNA damage, BCDX2 acts downstream of BRCA2 recruitment and upstream of RAD51 recruitment. BCDX2 binds predominantly to the intersection of the four duplex arms of the Holliday junction and to junction of replication forks. Location: Nucleus (UniProt). Locus 14q24.1 (HGNC).

Where it is found
  • Breast cancer: Open Targets association 0.68 with breast cancer (MONDO_0007254)
  • Prostate cancer: Open Targets association 0.52 with prostate cancer (MONDO_0008315); CIViC evidence names this disease
  • Ovarian cancer: Open Targets association 0.56 with ovarian cancer (MONDO_0008170); CIViC evidence names this disease
  • Lung cancer: Open Targets association 0.54 with lung cancer (MONDO_0008903)
  • Skin cancer: Open Targets association 0.52 with skin cancer (MONDO_0002898)
Class: other · Gene: RAD51B · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

Products by modality and phase

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Resistance routes

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Companion diagnostics

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Preclinical models

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Literature

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Query for this target: (TITLE:"RAD51B" OR ABSTRACT:"RAD51B" OR TITLE:"RAD51 paralog B" OR ABSTRACT:"RAD51 paralog B" OR TITLE:"DNA repair protein RAD51 homolog 2" OR ABSTRACT:"DNA repair protein RAD51 homolog 2" OR TITLE:"REC2" OR ABSTRACT:"REC2" OR TITLE:"hREC2" OR ABSTRACT:"hREC2" OR TITLE:"R51H2" OR ABSTRACT:"R51H2") 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 RAD51B, not a curated reading list.

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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/rad51b.json. Licence CC BY-NC 4.0.