OncoSignal
Live from Open Targets Platform, fetched 2026-11-12 01:55 UTC. Every row links to its source record.

RAD51B RAD51 paralog B

ENSG00000182185 · protein coding · Open Targets profile

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. The BCDX2 complex was originally reported to bind single-stranded DNA, single-stranded gaps in duplex DNA and specifically to nicks in duplex DNA. The BCDX2 subcomplex RAD51B:RAD51C exhibits single-stranded DNA-dependent ATPase activity suggesting an involvement in early stages of the HR pathway. {ECO:0000269|PubMed:11751635, ECO:0000269|PubMed:11751636, ECO:0000269|PubMed:11842113, ECO:0000269|PubMed:12441335, ECO:0000269|PubMed:23108668, ECO:0000269|PubMed:23149936}.

In 14 of 15 cancers, the evidence for RAD51B comes mainly from mutations found in tumours

Each row is a cancer, strongest overall evidence first. The two dots show how strong the inherited (germline) and tumour-mutation (somatic) evidence is; the line between them is the gap.

Inherited (germline) variantsMutations in tumours (somatic)
00.250.50.751prostate carcinomaprostate carcinomaprostate carcinoma: somatic 0.61prostate carcinoma: germline 0.28lung carcinomalung carcinomalung carcinoma: somatic 0.61lung carcinoma: germline 0.07breast carcinomabreast carcinomabreast carcinoma: somatic 0.46breast carcinoma: germline 0.50leiomyomaleiomyomaleiomyoma: somatic 0.61pancreatic ductal adenocarcinomapancreatic ductal adenocarcinomapancreatic ductal adenocarcinoma: somatic 0.61prostate adenocarcinomaprostate adenocarcinomaprostate adenocarcinoma: somatic 0.61breast ductal adenocarcinomabreast ductal adenocarcinomabreast ductal adenocarcinoma: somatic 0.61pancreatic neuroendocrine tumorpancreatic neuroendocrine tumorpancreatic neuroendocrine tumor: somatic 0.61kidney neoplasmkidney neoplasmkidney neoplasm: somatic 0.61skin carcinomaskin carcinomaskin carcinoma: somatic 0.61bile duct carcinomabile duct carcinomabile duct carcinoma: somatic 0.61exocrine pancreatic carcinomaexocrine pancreatic carcinomaexocrine pancreatic carcinoma: somatic 0.61carcinoma of liver and intrahepatic bil…carcinoma of liver and intrahepatic biliary tractcarcinoma of liver and intrahepatic biliary tract: somatic 0.61hepatobiliary neoplasmhepatobiliary neoplasmhepatobiliary neoplasm: somatic 0.61esophageal adenocarcinomaesophageal adenocarcinomaesophageal adenocarcinoma: somatic 0.61

Scores run from 0 (no evidence) to 1 (strongest). A missing dot at 0 means Open Targets holds no evidence of that kind. Source: Open Targets Platform, fetched live.

Tractability

Small molecule
Structure with Ligand
PROTAC
Database Ubiquitination

gnomAD loss of function constraint: o/e 0.9005500078201294 (upper bound 1.180400013923645). Low values mean loss of function is poorly tolerated, a safety flag for inhibition.

Who runs trials of these drugs

No named investigators on registry trials of RAD51B's approved or late-stage drugs in the last three years.

No terminated, withdrawn or suspended trials of RAD51B's drugs are registered

All 0 drugs and clinical candidates as a table

Each drug, stage and indication links to its Open Targets record, where the trials and approvals behind it are listed. Salt forms (for example a mesylate) are listed as Open Targets records them, as separate entries.

DrugTypeHighest stageIndicationsSource records
No drugs or clinical candidates recorded.