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    GENE:

    RAD51C (RAD51 paralog C)

    i
    Other names: RAD51C, RAD51 paralog C, R51H3, BROVCA3, RAD51L2
    1d
    Evaluation of homologous recombination testing in ovarian carcinoma. (PubMed, Virchows Arch)
    The five HRD assays varied significantly in HRD detection rates in high-grade serous OC. The results support the applicability of genomic instability analyses to assess HRD, while also highlighting the need to improve harmonization across different assays when HRD is used for therapeutic decision making.
    Journal
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    BRCA1 (Breast cancer 1, early onset) • HRD (Homologous Recombination Deficiency) • RAD51C (RAD51 paralog C)
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    HRD
    1d
    LEAH: Cohort Evaluation of Body Fluids Early Detection of Cancer in High-risk Individuals (clinicaltrials.gov)
    P=N/A, N=5909, Not yet recruiting, Gustave Roussy, Cancer Campus, Grand Paris | Initiation date: Jun 2025 --> Feb 2026
    Trial initiation date
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    TP53 (Tumor protein P53) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • PTEN (Phosphatase and tensin homolog) • STK11 (Serine/threonine kinase 11) • CDKN2A (Cyclin Dependent Kinase Inhibitor 2A) • POLE (DNA Polymerase Epsilon) • RUNX1 (RUNX Family Transcription Factor 1) • BAP1 (BRCA1 Associated Protein 1) • ETV6 (ETS Variant Transcription Factor 6) • MLH1 (MutL homolog 1) • CDK4 (Cyclin-dependent kinase 4) • MSH2 (MutS Homolog 2) • SMAD4 (SMAD family member 4) • CDH1 (Cadherin 1) • SDHB (Succinate Dehydrogenase Complex Iron Sulfur Subunit B) • POLD1 (DNA Polymerase Delta 1) • RAD51C (RAD51 paralog C) • CEBPA (CCAAT Enhancer Binding Protein Alpha) • RAD51D (RAD51 paralog D) • DDX41 (DEAD-Box Helicase 41) • GATA2 (GATA Binding Protein 2) • DICER1 (Dicer 1 Ribonuclease III) • FLCN (Folliculin) • PRSS1 (Serine Protease 1) • SDHD (Succinate Dehydrogenase Complex Subunit D) • TXNIP (Thioredoxin Interacting Protein) • ANKRD26 (Ankyrin Repeat Domain Containing 26) • BMPR1A (Bone Morphogenetic Protein Receptor Type 1A) • HOXB13 (Homeobox B13)
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    TP53 mutation • PTEN deletion
    2d
    An Open-label, First-in-Human, Dose-Escalation and Dose-Expansion Phase I/II Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of SPR1020 in Patients With Advanced Solid Tumors (clinicaltrials.gov)
    P1/2, N=210, Recruiting, Shanghai SciBrunch Therapeutics Co., Ltd. | Not yet recruiting --> Recruiting
    Enrollment open • First-in-human
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    HER-2 (Human epidermal growth factor receptor 2) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • BRCA (Breast cancer early onset) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D)
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    HER-2 negative • HRD • PALB2 mutation • RAD51C mutation • BRCA mutation
    2d
    Phase II Trial of the PARP Inhibitor Niraparib and PD-1 Inhibitor Dostarlimab in Patients With Advanced Cancers With Active Progressing Brain Metastases (STARLET) (clinicaltrials.gov)
    P2, N=120, Recruiting, M.D. Anderson Cancer Center | Trial completion date: Feb 2026 --> Dec 2029 | Trial primary completion date: Feb 2026 --> Dec 2029
    Trial completion date • Trial primary completion date
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    PD-L1 (Programmed death ligand 1) • HRD (Homologous Recombination Deficiency) • CDK12 (Cyclin dependent kinase 12) • CHEK2 (Checkpoint kinase 2) • RAD51 (RAD51 Homolog A) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • CHEK1 (Checkpoint kinase 1) • RAD54L (DNA Repair And Recombination Protein RAD54) • FANCL (FA Complementation Group L) • RAD52 (RAD52 Homolog DNA Repair Protein)
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    PD-L1 expression
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    Zejula (niraparib) • Jemperli (dostarlimab-gxly)
    9d
    Results of a multigene panel testing approach targeting patients with suspected genetic predisposition to pancreatic ductal adenocarcinoma. (PubMed, Eur J Hum Genet)
    An exploratory approach consisting of unmasking the results of the NGS analysis of 123 « research » genes involved in the carcinogenesis was applied to the 447 patients tested negative for the different genes of our diagnostic panel. This approach failed to identify other susceptibility genes to pancreatic adenocarcinoma.
    Journal • BRCA Biomarker
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • ATM (ATM serine/threonine kinase) • STK11 (Serine/threonine kinase 11) • CDKN2A (Cyclin Dependent Kinase Inhibitor 2A) • PALB2 (Partner and localizer of BRCA2) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2) • APC (APC Regulator Of WNT Signaling Pathway) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D)
    15d
    Niraparib in Tumors Metastatic to the CNS (clinicaltrials.gov)
    P2, N=20, Active, not recruiting, Massachusetts General Hospital | Trial primary completion date: Dec 2025 --> Dec 2026
    Trial primary completion date
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • BAP1 (BRCA1 Associated Protein 1) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD50 (RAD50 Double Strand Break Repair Protein) • PARP1 (Poly(ADP-Ribose) Polymerase 1) • BARD1 (BRCA1 Associated RING Domain 1) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin)) • RAD54L (DNA Repair And Recombination Protein RAD54) • XRCC2 (X-Ray Repair Cross Complementing 2) • RAD54B (RAD54 Homolog B) • XRCC3 (X-Ray Repair Cross Complementing 3)
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    HRD • ATM mutation • PALB2 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • RAD54L mutation
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    Zejula (niraparib)
    15d
    NePtune: Study of Neoadjuvant PARP Inhibition Followed by Radical Prostatectomy in Patients With Unfavorable Intermediate-Risk or High-Risk Prostate Cancer With Select HRR Gene Alterations (clinicaltrials.gov)
    P2, N=32, Recruiting, Rana McKay, MD | Trial primary completion date: Dec 2025 --> Mar 2026
    Trial primary completion date
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • CDK12 (Cyclin dependent kinase 12) • CHEK2 (Checkpoint kinase 2) • FANCA (FA Complementation Group A) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • BARD1 (BRCA1 Associated RING Domain 1) • RAD54L2 (RAD54 Like 2)
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    Lynparza (olaparib) • triptorelin • goserelin acetate • leuprolide acetate for depot suspension
    16d
    An Open-label, First-in-Human, Dose-Escalation and Dose-Expansion Phase I/II Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of SPR1020 in Patients With Advanced Solid Tumors (clinicaltrials.gov)
    P1/2, N=210, Not yet recruiting, Shanghai SciBrunch Therapeutics Co., Ltd.
    New P1/2 trial • First-in-human
    |
    HER-2 (Human epidermal growth factor receptor 2) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • BRCA (Breast cancer early onset) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D)
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    HER-2 negative • HRD • PALB2 mutation • RAD51C mutation • BRCA mutation
    16d
    Nivolumab + Docetaxel + ADT in mHSPC Patients With DDRD or Inflamed Tumors (clinicaltrials.gov)
    P2, N=60, Active, not recruiting, Xiao X. Wei, MD | Trial completion date: Dec 2025 --> Jun 2026
    Trial completion date
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    PD-L1 (Programmed death ligand 1) • BRCA1 (Breast cancer 1, early onset) • MSI (Microsatellite instability) • CD8 (cluster of differentiation 8) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • CDK12 (Cyclin dependent kinase 12) • CHEK2 (Checkpoint kinase 2) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin)) • ABRAXAS1 (Abraxas 1 BRCA1 A Complex Subunit 2) • GEN1 (GEN1 Holliday junction 5' flap endonuclease)
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    PD-L1 expression • MSI-H/dMMR
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    OncoPanel™ Assay
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    Opdivo (nivolumab) • docetaxel • goserelin acetate • Firmagon (degarelix) • leuprolide acetate for depot suspension
    16d
    Hereditary Risk Assessment of Cancer Using Clinical History in Patients Diagnosed with Breast or Ovarian Cancer Receiving Treatment at Tertiary Care Hospital in Western Rajasthan - A Cross-sectional Study. (PubMed, Ann Afr Med)
    Genetic counseling and testing for patients diagnosed with breast or OC can identify HBOC risk, reducing complications and mitigating lifetime cancer risk through timely assessment and awareness.
    Observational data • Journal
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • PALB2 (Partner and localizer of BRCA2) • CHEK2 (Checkpoint kinase 2) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • BARD1 (BRCA1 Associated RING Domain 1)
    18d
    Fluzoparib as Adjuvant Treatment in Patients With Germline Homologous Recombination Repair (HRR) Mutated Primary Breast Cancer (Flamenco) (clinicaltrials.gov)
    P2, N=334, Not yet recruiting, Fudan University
    New P2 trial • IO biomarker
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    HER-2 (Human epidermal growth factor receptor 2) • PGR (Progesterone receptor) • RAD51 (RAD51 Homolog A) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD50 (RAD50 Double Strand Break Repair Protein) • PARP1 (Poly(ADP-Ribose) Polymerase 1) • RAD51D (RAD51 paralog D) • BARD1 (BRCA1 Associated RING Domain 1) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin)) • RAD54L (DNA Repair And Recombination Protein RAD54) • FANCM (FA Complementation Group M) • RAD52 (RAD52 Homolog DNA Repair Protein) • RPA1 (Replication Protein A1) • PARP2 (Poly(ADP-Ribose) Polymerase 2)
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    HER-2 negative • PALB2 mutation • PGR positive • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • RAD54L mutation
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    capecitabine • AiRuiYi (fluzoparib)
    22d
    High-throughput mapping of 6,888 RAD51D variants identifies distinct biochemical functions needed for homologous recombination and olaparib response. (PubMed, bioRxiv)
    Together, we identify hotspots of deleterious RAD51D variants and uncover the mechanisms by which variants compromise its biochemical functions. Used a multiplexed assay of functional effect (MAVE) to assess the functionality via olaparib sensitivity of 6,888 RAD51D coding variants, which can be used for variant classification Provided cellular functional analysis for 70 clinically-identified breast and ovarian cancer RAD51D variants Identified key regions and enzymatic activities of RAD51D critical for its function in the BCDX2 and the X3CDX2 complexesDetermined mechanism of RAD51D-mediated regulation of BCDX2 ATPase activity.
    Journal
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    RAD51 (RAD51 Homolog A) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D)
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    Lynparza (olaparib)