# RAD51D

Source: https://onco.cc/targets/rad51d/  
OnCo record `rad51d` (Target). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

RAD51D (DNA repair protein RAD51 homolog 4) is a gene. The public catalogues list it as a drug target, a biomarker and a DNA repair gene, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Ovarian cancer, Breast cancer, Gastric & gastro-oesophageal junction cancer and 3 more.

## Summary

Involved in the homologous recombination repair (HRR) pathway of double-stranded DNA breaks arising during DNA replication or induced by DNA-damaging agents. Bind to single-stranded DNA (ssDNA) and has DNA-dependent ATPase activity. Part of the RAD51 paralog protein complex BCDX2 which acts in the BRCA1-BRCA2-dependent HR pathway.

CIViC holds 2 clinical evidence items and 0 assertions across 2 variants, naming Olaparib. Open Targets scores its association with cancer at 0.86 (direct and indirect evidence; datatypes genetic literature 0.88, affected pathway 0.87, literature 0.86, genetic association 0.87, somatic mutation 0.86).

## Fields

- Kind: Target
- Last checked: 2026-09-23
- Also known as: RAD51 paralog D; DNA repair protein RAD51 homolog 4; R51H3; Trad; HsTRAD; RAD51L3
- Tags: cancer-genes-wave
- Symbol: RAD51D
- Class: other
- Biology: Involved in the homologous recombination repair (HRR) pathway of double-stranded DNA breaks arising during DNA replication or induced by DNA-damaging agents. Bind to single-stranded DNA (ssDNA) 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. Location: Nucleus; Cytoplasm, cytoskeleton, microtubule organizing center, centrosome; Chromosome, telomere (UniProt). Locus 17q12 (HGNC).
- Where found: Ovarian cancer: Open Targets association 0.80 with ovarian cancer (MONDO_0008170); Breast cancer: Open Targets association 0.78 with breast cancer (MONDO_0007254); CIViC evidence names this disease; Gastric & gastro-oesophageal junction cancer: Open Targets association 0.64 with gastric cancer (MONDO_0001056); Prostate cancer: CIViC evidence names this disease; Colorectal cancer: Open Targets association 0.59 with colorectal cancer (MONDO_0005575); Brain and spinal cord tumours: Open Targets association 0.51 with brain cancer (MONDO_0001657)

## Notes

- Written by scripts/fetch-cancer-genes.ts from CIViC, Open Targets, IntOGen, HGNC and UniProt; the function text is UniProt's, condensed and in UK spelling. Roles: CIViC lists 1 therapies; CIViC holds 2 clinical evidence items on its variants; UniProt keyword "DNA repair". Evidence tier "clinical-evidence" is the strongest of those signals.
- Prevalence not recorded: none of the sources gives a positivity rate.

## Sources

- HGNC HGNC:9823: https://www.genenames.org/data/gene-symbol-report/#!/hgnc_id/HGNC:9823
- UniProt O75771: https://www.uniprot.org/uniprotkb/O75771/entry
- NCBI Gene 5892: https://www.ncbi.nlm.nih.gov/gene/5892
- Ensembl ENSG00000185379: https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000185379

## Connected records

- collections: [CIViC](https://onco.cc/collections/civic/), [Open Targets Platform](https://onco.cc/collections/open-targets/)
- cancers: [Brain and spinal cord tumours (all types)](https://onco.cc/cancers/brain-tumours/), [Breast cancer (all types)](https://onco.cc/cancers/breast-cancer/), [Colorectal cancer](https://onco.cc/cancers/colorectal/), [Gastric & gastro-oesophageal junction cancer](https://onco.cc/cancers/gastric/), [Ovarian cancer](https://onco.cc/cancers/ovarian/), [Prostate cancer](https://onco.cc/cancers/prostate/)

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JSON: https://onco.cc/api/v1/entities/rad51d.json