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    BIOMARKER:

    CHEK1 mutation

    i
    Other names: CHEK1, CHK1, Checkpoint kinase 1
    Entrez ID:
    1111
    Related biomarkers:
    Expression
    Related tests:
    20d
    Mutational and Expressional Deregulation of the CHEK1 Gene in Breast Cancer Patients. (PubMed, Cancer Invest)
    Based on the current findings we can conclude that genetic/expression deregulation of the CHEK1 gene play an important role in increased breast cancer risk. The CHEK1 gene also plays an important role in chemotherapy resistance response among the Pakistani population.
    Journal
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    CHEK1 (Checkpoint kinase 1)
    |
    CHEK1 mutation
    1m
    Cabozantinib and Pamiparib for the Treatment of Advanced of Refractory Solid Tumors (clinicaltrials.gov)
    P1, N=44, Completed, M.D. Anderson Cancer Center | Active, not recruiting --> Completed
    Trial completion
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • PTEN (Phosphatase and tensin homolog) • ARID1A (AT-rich interaction domain 1A) • CHEK2 (Checkpoint kinase 2) • RAD50 (RAD50 Double Strand Break Repair Protein) • PARP1 (Poly(ADP-Ribose) Polymerase 1) • CHEK1 (Checkpoint kinase 1) • EMSY (EMSY Transcriptional Repressor BRCA2 Interacting)
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    BRCA2 mutation • BRCA1 mutation • ATM mutation • PALB2 mutation • CHEK2 mutation • CHEK1 mutation
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    Cabometyx (cabozantinib tablet) • Partruvix (pamiparib)
    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)
    |
    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
    Efficacy of olaparib in advanced cancers with somatic or germline mutations in BAP1, BARD1, BRIP1 and PALB2. (PubMed, ESMO Open)
    Olaparib demonstrated meaningful clinical activity across different cancer types with somatic or germline mutations in BAP1, BARD1, BRIP1 and PALB2.
    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) • ARID1A (AT-rich interaction domain 1A) • BAP1 (BRCA1 Associated Protein 1) • PALB2 (Partner and localizer of BRCA2) • CDK12 (Cyclin dependent kinase 12) • ATRX (ATRX Chromatin Remodeler) • 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) • MRE11A (MRE11 homolog, double strand break repair nuclease) • NBN (Nibrin Nijmegen Breakage Syndrome 1 (Nibrin)) • RAD21 (RAD21 Cohesin Complex Component) • DDR2 (Discoidin domain receptor 2) • ERCC4 (ERCC Excision Repair 4, Endonuclease Catalytic Subunit) • RAD52 (RAD52 Homolog DNA Repair Protein) • FANCE (FA Complementation Group E) • GEN1 (GEN1 Holliday junction 5' flap endonuclease) • SLX4 (SLX4 Structure-Specific Endonuclease Subunit)
    |
    BRCA2 mutation • BRCA1 mutation • HRD • ARID1A mutation • PALB2 mutation • CDK12 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • BARD1 mutation • CHEK1 mutation
    |
    Lynparza (olaparib)
    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
    |
    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)
    |
    BRCA1 mutation • ATM mutation • PALB2 mutation • CDK12 mutation • CHEK2 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • CHEK1 mutation • RAD54L mutation
    |
    berzosertib (M6620) • Trodelvy (sacituzumab govitecan-hziy)
    2ms
    Chemotherapy with bevacizumab and pembrolizumab followed by radiotherapy for unclassified round cell sarcomas of the gallbladder: A case report and review of literature. (PubMed, Transl Oncol)
    The patient exhibited vascular endothelial growth factor receptor amplification, mutations in CHEK1, ERCC3, and TP53, deletion of CD274 (gene of PD-L1), and microsatellite stability. These findings suggest that immunotherapy may be beneficial to URCS patients with low PD-L1 expression and microsatellite stability, when accompanied by immunotherapy-associated genetic alterations.
    Review • Journal • PD(L)-1 Biomarker • IO biomarker
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    PD-L1 (Programmed death ligand 1) • TP53 (Tumor protein P53) • CHEK1 (Checkpoint kinase 1) • ERCC3 (ERCC Excision Repair 3, TFIIH Core Complex Helicase Subunit)
    |
    PD-L1 expression • TP53 mutation • TP53 deletion • CHEK1 mutation
    |
    Keytruda (pembrolizumab) • Avastin (bevacizumab)
    3ms
    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=120, Recruiting, National Cancer Institute (NCI) | Trial completion date: Mar 2027 --> Mar 2029 | Trial primary completion date: Mar 2026 --> Mar 2028
    Trial completion date • Trial primary completion date
    |
    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)
    |
    BRCA1 mutation • ATM mutation • PALB2 mutation • CDK12 mutation • CHEK2 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • CHEK1 mutation • RAD54L mutation
    |
    berzosertib (M6620) • Trodelvy (sacituzumab govitecan-hziy)
    4ms
    Pancancer Fine-Mapping of Mutational Intolerance Identifies CHEK1 as an Immunosuppressive Driver in Lung Adenocarcinoma. (PubMed, Adv Sci (Weinh))
    Exemplified by CHEK1, these findings establish MIGs as dual therapeutic targets capable of simultaneously disrupting tumor-intrinsic fitness and remodeling the immunosuppressive niche. This work proposes a novel paradigm for selectively targeting MIGs to eliminate aggressive tumor subclones while minimizing toxicity to normal cells.
    Journal • PD(L)-1 Biomarker • IO biomarker • Pan tumor
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    CD74 (CD74 Molecule) • CHEK1 (Checkpoint kinase 1) • MIF (Macrophage Migration Inhibitory Factor)
    |
    CHEK1 mutation
    6ms
    Case Report: Ivonescimab in EGFR-mutant lung cancer with baseline malignant pleural effusion and acquired complex resistance. (PubMed, Front Immunol)
    The patient eventually developed resistance to both first-line gefitinib and later almonertinib...He received ivonescimab monotherapy, achieving disease control for nearly 5 months before transitioning to ivonescimab plus pemetrexed with continued benefit and a manageable safety profile. This case illustrates the potential benefit of ivonescimab in patients with EGFR-mutant LUAD and baseline MPE who develop complex, non-canonical resistance to EGFR-TKIs. These findings support further clinical evaluation of ivonescimab in this poor-prognosis subgroup and highlight the importance of repeated molecular profiling in guiding treatment strategy.
    Journal • Pleural effusion • PD(L)-1 Biomarker • IO biomarker
    |
    EGFR (Epidermal growth factor receptor) • PD-L1 (Programmed death ligand 1) • TP53 (Tumor protein P53) • MET (MET proto-oncogene, receptor tyrosine kinase) • RB1 (RB Transcriptional Corepressor 1) • PD-1 (Programmed cell death 1) • SETD2 (SET Domain Containing 2, Histone Lysine Methyltransferase) • CHEK1 (Checkpoint kinase 1) • DNMT1 (DNA methyltransferase 1) • AKT2 (V-akt murine thymoma viral oncogene homolog 2)
    |
    PD-L1 expression • TP53 mutation • EGFR mutation • EGFR exon 19 deletion • MET amplification • EGFR T790M • CHEK1 mutation
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    gefitinib • pemetrexed • Ameile (aumolertinib) • Idafang (ivonescimab)
    10ms
    Impact of HRR Gene Subclass on Clinical Outcomes of PARP Inhibitors in Metastatic Castration-Resistant Prostate Cancer. (PubMed, Clin Genitourin Cancer)
    Patients with mCRPC harboring effector HRR mutations derive greater clinical benefit from PARPi plus ARSi than those with sensor mutations. These findings highlight the heterogeneous predictive value of HRR gene alterations and suggest that mutation sub-class should guide treatment decisions in HRD-positive mCRPC.
    Clinical data • Journal • BRCA Biomarker • PARP Biomarker
    |
    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • ATM (ATM serine/threonine kinase) • HRD (Homologous Recombination Deficiency) • PALB2 (Partner and localizer of BRCA2) • CHEK2 (Checkpoint kinase 2) • RAD51 (RAD51 Homolog A) • CHEK1 (Checkpoint kinase 1) • FANCD2 (FA Complementation Group D2)
    |
    HRD • PALB2 mutation • CHEK2 mutation • CHEK1 mutation
    |
    Lynparza (olaparib) • abiraterone acetate
    11ms
    Aberrant splicing of CHEK1 is a driver of megakaryocytic dysplasia in U2AF1S34F mutant myelodysplastic neoplasms. (PubMed, Leukemia)
    Accordingly, treatment with selective CHK1 inhibitor significantly reduces abnormal MK production in vitro. Taken together, these findings demonstrate that U2AF1 mutations induce the generation of abnormal MKs by driving aberrant splicing of the CHEK1 cell cycle-related gene, revealing the molecular basis for dysmegakaryopoiesis in MDS and identifying a new potential target for MDS treatment.
    Journal
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    U2AF1 (U2 Small Nuclear RNA Auxiliary Factor 1) • CHEK1 (Checkpoint kinase 1)
    |
    CHEK1 mutation
    11ms
    Pembrolizumab, Olaparib, Recurrent/Advanced Gastric and Gastro-esophageal Junction(GEJ) Cancer (clinicaltrials.gov)
    P1/2, N=71, Recruiting, Yonsei University | Trial completion date: May 2025 --> May 2026 | Trial primary completion date: Dec 2024 --> Dec 2025
    Trial completion date • Trial primary completion date • Checkpoint inhibition
    |
    HER-2 (Human epidermal growth factor receptor 2) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • HRD (Homologous Recombination Deficiency) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • 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) • RAD54L (DNA Repair And Recombination Protein RAD54) • FANCL (FA Complementation Group L) • PPP2R2A (Protein Phosphatase 2, Regulatory Subunit B, Alpha)
    |
    HER-2 positive • ATM mutation • PALB2 mutation • CDK12 mutation • CHEK2 mutation • BRIP1 mutation • RAD51C mutation • RAD51D mutation • RAD51B mutation • BARD1 mutation • CHEK1 mutation
    |
    Keytruda (pembrolizumab) • Lynparza (olaparib) • paclitaxel