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    GENE:

    RAD51B (RAD51 Paralog B)

    i
    Other names: RAD51B, RAD51 Paralog B, DNA Repair Protein RAD51 Homolog 2, RAD51 Homolog B, RAD51L1, R51H2, RAD51 Homolog B (S. Cerevisiae), RAD51 (S. Cerevisiae)-Like 1, RAD51-Like 1 (S. Cerevisiae), RAD51-Like Protein 1, RecA-Like Protein, Rad51B
    17d
    KEYNOTE-F86: A Study of PARG Inhibitor IDE161 in Participants With Advanced Solid Tumors (clinicaltrials.gov)
    P1, N=216, Active, not recruiting, IDEAYA Biosciences | Recruiting --> Active, not recruiting
    Enrollment closed
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • 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) • CHEK1 (Checkpoint kinase 1) • BARD1 (BRCA1 Associated RING Domain 1) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin)) • RAD54L (DNA Repair And Recombination Protein RAD54) • FANCL (FA Complementation Group L) • PPP2R2A (Protein Phosphatase 2, Regulatory Subunit B, Alpha)
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    HRD
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    Keytruda (pembrolizumab) • IDE161
    21d
    Uterine Myxoid Inflammatory Myofibroblastic Sarcoma (MIMS) Harboring Pathogenic KRAS Mutations and Expressing ER, PR, and CD10. (PubMed, Int J Gynecol Pathol)
    No gene fusions in PDGFRA/B, JAK1, PML, ALK, ROS1, PLAG1, or any other gene were identified by whole transcriptomic RNA sequencing. Given its deceptively bland appearance and its propensity, at least in the uterus, to express both CD10 and ER with only focal SMA expression, MIMS can be mistaken for an endometrial stromal tumor, an ALK and ROS1-negative uterine inflammatory myofibroblastic tumor, or other cytologically bland fusion-driven uterine mesenchymal neoplasms.
    Journal
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    KRAS (KRAS proto-oncogene GTPase) • ER (Estrogen receptor) • ALK (Anaplastic lymphoma kinase) • PGR (Progesterone receptor) • ROS1 (Proto-Oncogene Tyrosine-Protein Kinase ROS) • PDGFRA (Platelet Derived Growth Factor Receptor Alpha) • JAK1 (Janus Kinase 1) • RAD51B (RAD51 Paralog B) • MME (Membrane Metalloendopeptidase) • CTSK (Cathepsin K) • LATS1 (Large Tumor Suppressor Kinase 1) • PLAG1 (PLAG1 Zinc Finger)
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    KRAS mutation • ALK rearrangement • ALK fusion • PDGFRA mutation • RAD51B mutation
    27d
    Particulate Hexavalent Chromium Inhibits RAD51 Paralogs Necessary for RAD51 Filament Formation and Stabilization During Homologous Recombination Repair. (PubMed, Occup Health (Auckl))
    Cr(VI) also inhibited overall RAD51D protein expression, as well as its interaction with RAD51. These findings suggest that Cr(VI) inhibits all RAD51 paralogs, but RAD51D might be an early target of Cr(VI), leading to the loss of RAD51 filament formation and function and the overall inhibition of homologous recombination repair.
    Journal
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    HRD (Homologous Recombination Deficiency) • RAD51 (RAD51 Homolog A) • RAD51B (RAD51 Paralog B) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • XRCC2 (X-Ray Repair Cross Complementing 2) • XRCC3 (X-Ray Repair Cross Complementing 3)
    1m
    Homozygous Loss of Recombination Repair Genes and Poly ADP-Ribose Polymerase Inhibitor Benefit for Patients With Ovarian Cancer. (PubMed, JCO Precis Oncol)
    We observe durable PARPi effectiveness for patients with OVCA and HRR gene homozygous loss in routine practice. We demonstrate the importance of detecting and reporting homozygous loss in HRR genes, an aspect not standard to all sequencing assays.
    Journal • BRCA Biomarker • PARP Biomarker
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • PALB2 (Partner and localizer of BRCA2) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • BARD1 (BRCA1 Associated RING Domain 1)
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    BRCA2 mutation • BRCA1 mutation
    1m
    Cancer mutations in RAD51 and its paralogues. (PubMed, PLoS One)
    A comparison of mutations reported on COSMIC with those reported on ClinVar revealed that many mutations primarily in RAD51C and RAD51D are also hereditary. Thus, it appears that an apparent low level of RAD51 mutations in cancer cells is compensated by an increase in paralogues mutations.
    Journal
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    RAD51 (RAD51 Homolog A) • RAD51B (RAD51 Paralog B) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D)
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    RAD51C mutation • RAD51D mutation • RAD51B mutation
    1m
    Olaparib in Men With High-Risk Biochemically-Recurrent Prostate Cancer Following Radical Prostatectomy, With Integrated Biomarker Analysis (clinicaltrials.gov)
    P2, N=51, Active, not recruiting, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins | Trial completion date: May 2026 --> May 2027
    Trial completion date
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • ATM (ATM serine/threonine kinase) • CDK12 (Cyclin dependent kinase 12) • CHEK2 (Checkpoint kinase 2) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • CHEK1 (Checkpoint kinase 1) • BARD1 (BRCA1 Associated RING Domain 1) • FANCL (FA Complementation Group L) • PPP2R2A (Protein Phosphatase 2, Regulatory Subunit B, Alpha)
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    BRCA1 mutation • ATM mutation • PALB2 mutation • CDK12 mutation • CHEK2 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • CHEK1 mutation
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    Lynparza (olaparib)
    1m
    Whole exome sequencing reveals rare DNA repair gene variants in BRCA1/2-negative Arab early-onset breast cancer patients. (PubMed, Sci Rep)
    Several patients carried multiple deleterious variants, suggesting a possible polygenic contribution to EOBC predisposition. These findings expand the spectrum of rare DNA repair gene variants observed in BRCA1/2-negative early-onset breast cancer and provide candidate variants for further investigation, rather than establishing definitive causal associations.
    Journal • BRCA Biomarker
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • RAD51B (RAD51 Paralog B) • CLK2 (CDC Like Kinase 2) • EME2 (Essential Meiotic Structure-Specific Endonuclease Subunit 2) • DNA2 (DNA Replication Helicase/Nuclease 2)
    1m
    KNIGHTS: High-Risk Metachronous Oligometastatic Prostate Cancer Trial (clinicaltrials.gov)
    P2, N=88, Active, not recruiting, University of Maryland, Baltimore | Recruiting --> Active, not recruiting
    Enrollment closed
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    TP53 (Tumor protein P53) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • ATM (ATM serine/threonine kinase) • CHEK2 (Checkpoint kinase 2) • FANCA (FA Complementation Group A) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • CD4 (CD4 Molecule) • RAD54L (DNA Repair And Recombination Protein RAD54)
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    TP53 mutation • BRCA2 mutation • BRCA1 mutation • ATM mutation • PALB2 mutation • CHEK2 mutation • BRIP1 mutation • RAD51B mutation • RAD54L mutation
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    Zejula (niraparib) • abiraterone acetate • prednisone
    2ms
    Beyond MDM2 amplification: chromosomal translocations as diagnostic drivers in adipocytic tumours-a histopathological and molecular reappraisal. (PubMed, Malays J Pathol)
    HMGA2 and PLAG1 are considered the most important altered genes in most adipocytic tumours subset and lipoblastoma, and identification of their partners is valuable in providing the accurate diagnosis and management especially when the histopathologic diagnosis is unclear.
    Review • Journal
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    MDM2 (E3 ubiquitin protein ligase) • EWSR1 (EWS RNA Binding Protein 1) • RAD51B (RAD51 Paralog B) • FUS (FUS RNA Binding Protein) • PPP2R2A (Protein Phosphatase 2, Regulatory Subunit B, Alpha) • HMGA2 (High mobility group AT-hook 2) • NFIB (Nuclear Factor I B) • COL3A1 (Collagen Type III Alpha 1 Chain) • DDIT3 (DNA-damage-inducible transcript 3) • EP400 (E1A Binding Protein P400) • PLAG1 (PLAG1 Zinc Finger) • HAS2 (Hyaluronan Synthase 2) • HNRNPA2B1 (Heterogeneous Nuclear Ribonucleoprotein A2/B1) • HNRNPC (Heterogeneous Nuclear Ribonucleoprotein C) • KLF10 (Kruppel Like Factor 10) • SRSF3 (Serine And Arginine Rich Splicing Factor 3) • YWHAZ (Tyrosine 3-Monooxygenase/Tryptophan 5-Monooxygenase Activation Protein Zeta)
    2ms
    NCI10217: Testing the Combination of the Anti-cancer Drugs Copanlisib, Olaparib, and MEDI4736 (Durvalumab) in Patients With Advanced Solid Tumors With Selected Mutations (clinicaltrials.gov)
    P1, N=39, Active, not recruiting, National Cancer Institute (NCI) | Trial completion date: Sep 2026 --> Dec 2026
    Trial completion date
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    PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • RAD51 (RAD51 Homolog A) • FANCA (FA Complementation Group A) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • CD4 (CD4 Molecule) • RAD51D (RAD51 paralog D) • BARD1 (BRCA1 Associated RING Domain 1) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin))
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    PIK3CA mutation • PTEN mutation • PALB2 mutation • CDK12 mutation • BARD1 mutation
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    Lynparza (olaparib) • Imfinzi (durvalumab) • Aliqopa (copanlisib)
    2ms
    CX-5461-04: Study of CX-5461 in Patients With Solid Tumours and BRCA1/2, PALB2 or Homologous Recombination Deficiency (HRD) Mutation (clinicaltrials.gov)
    P1, N=52, Recruiting, Senhwa Biosciences, Inc. | Trial completion date: Dec 2026 --> Mar 2027 | Trial primary completion date: Dec 2025 --> Mar 2027
    Trial completion date • Trial primary completion date
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • CCNE1 (Cyclin E1) • KMT2D (Lysine Methyltransferase 2D) • CDK12 (Cyclin dependent kinase 12) • KMT2C (Lysine Methyltransferase 2C) • SLFN11 (Schlafen Family Member 11) • CHEK2 (Checkpoint kinase 2) • CREBBP (CREB binding protein) • RAD51 (RAD51 Homolog A) • FANCA (FA Complementation Group A) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD50 (RAD50 Double Strand Break Repair Protein) • RAD51D (RAD51 paralog D) • CHEK1 (Checkpoint kinase 1) • BARD1 (BRCA1 Associated RING Domain 1) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin)) • RAD54L (DNA Repair And Recombination Protein RAD54) • FANCF (FA complementation group F) • FANCL (FA Complementation Group L) • RBBP8 (RB Binding Protein 8, Endonuclease) • XRCC2 (X-Ray Repair Cross Complementing 2) • ERCC4 (ERCC Excision Repair 4, Endonuclease Catalytic Subunit) • FANCI (FA Complementation Group I) • FANCM (FA Complementation Group M) • MAD2L2 (Mitotic Arrest Deficient 2 Like 2) • CDC25C (Cell Division Cycle 25C) • FANCD2 (FA Complementation Group D2) • FANCE (FA Complementation Group E) • FANCG (FA Complementation Group G) • MUS81 (MUS81 Structure-Specific Endonuclease Subunit) • CDC25A (Cell Division Cycle 25A) • FANCB (FA Complementation Group B) • FANCC (FA Complementation Group C) • GNRP (Ras-Specific Guanine Nucleotide-Releasing Factor 1) • RAD17 (RAD17 Checkpoint Clamp Loader Component) • SLX4 (SLX4 Structure-Specific Endonuclease Subunit)
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    BRCA2 mutation • BRCA1 mutation • PALB2 mutation
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    pidnarulex (CX-5461)
    2ms
    A Phase I/II Study of Sacituzumab Govitecan Plus Berzosertib in Small Cell Lung Cancer, Extra-Pulmonary Small Cell Neuroendocrine Cancer and Homologous Recombination-Deficient Cancers Resistant to PARP Inhibitors (clinicaltrials.gov)
    P1/2, N=35, Active, not recruiting, National Cancer Institute (NCI) | Recruiting --> Active, not recruiting | N=120 --> 35
    Enrollment closed • Enrollment change
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • CDK12 (Cyclin dependent kinase 12) • BRCA (Breast cancer early onset) • CHEK2 (Checkpoint kinase 2) • RAD51B (RAD51 Paralog B) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • CHEK1 (Checkpoint kinase 1) • BARD1 (BRCA1 Associated RING Domain 1) • RAD54L (DNA Repair And Recombination Protein RAD54) • FANCL (FA Complementation Group L) • PPP2R2A (Protein Phosphatase 2, Regulatory Subunit B, Alpha)
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    BRCA1 mutation • ATM mutation • PALB2 mutation • CDK12 mutation • CHEK2 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • CHEK1 mutation • RAD54L mutation
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    berzosertib (M6620) • Trodelvy (sacituzumab govitecan-hziy)