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    GENE:

    MSH6 (MutS homolog 6)

    i
    Other names: MSH6, GTBP, MutS homolog 6
    3d
    Microsatellite status and minimal microsatellite shift in atypical endometrial hyperplasia and endometrial cancer: an analysis of 848 cases (PubMed, Zhonghua Bing Li Xue Za Zhi)
    Minimal microsatellite shift is commonly detected in MSI-H cases, and some cases are difficult to interpret due to their classification within the equivocal range. Increasing the number of microsatellite loci, combined with visualization graph comparison and integration of mismatch repair protein immunophenotype and histological features, can effectively improve the accuracy of MSI-H interpretation.
    Journal • MSi-H Biomarker
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    MSI (Microsatellite instability) • POLE (DNA Polymerase Epsilon) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • PMS2 (PMS1 protein homolog 2)
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    MSI-H/dMMR • POLE mutation
    5d
    Management of locally advanced lynch syndrome rectal cancer during pregnancy with neoadjuvant immunochemotherapy: a case report. (PubMed, Front Oncol)
    The patient subsequently underwent neoadjuvant chemoradiotherapy (50.4 Gy in 28 fractions) combined with two cycles of capecitabine plus oxaliplatin (CapeOx) and tislelizumab, achieving significant tumor regression (yT2N0M0). LS-associated rectal cancer during pregnancy requires individualized, multidisciplinary management. Medical termination followed by neoadjuvant immunochemoradiotherapy can optimize maternal outcomes while minimizing fetal and genetic risks.
    Journal
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    MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2)
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    Tevimbra (tislelizumab-jsgr) • capecitabine • oxaliplatin
    6d
    Integrated tumor and germline profiling of lynch syndrome in a North Indian cohort. (PubMed, Front Oncol)
    Germline testing helps identify probands and FDRs who are healthy mutation carriers. Risk-reduction strategies for them can help reduce the risk of CRC in the Indian population.
    Journal
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    MSI (Microsatellite instability) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2)
    6d
    Germline Cancer Testing in Unselected Patients With Neuroendocrine Neoplasms: A Multi-center Prospective Study. (PubMed, Pancreas)
    Universal germline testing in unselected NEN patients identified clinically relevant PGVs in over 15% of cases. These findings support broader genetic testing approaches to guide treatment, enhance familial risk assessment, and inform cascade testing-regardless of traditional clinical selection criteria.
    Clinical • Journal
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    MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • CHEK2 (Checkpoint kinase 2) • MUTYH (MutY homolog) • MITF (Melanocyte Inducing Transcription Factor)
    7d
    S2107: Testing the Addition of Nivolumab to Standard Treatment for Patients With Metastatic or Unresectable Colorectal Cancer That Have a BRAF Mutation (clinicaltrials.gov)
    P2, N=86, Active, not recruiting, National Cancer Institute (NCI) | Trial completion date: Sep 2026 --> Jun 2027 | Trial primary completion date: Sep 2026 --> Feb 2026
    Trial completion date • Trial primary completion date
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    BRAF (B-raf proto-oncogene) • MSI (Microsatellite instability) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2)
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    BRAF V600E • BRAF V600
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    Opdivo (nivolumab) • Erbitux (cetuximab) • Braftovi (encorafenib) • ABP 206 (nivolumab biosimilar)
    7d
    Associations between molecular classification and response to intra-uterine levonorgestrel device therapy in patients with medically managed endometrial cancer and endometrial intra-epithelial neoplasia: a multi-center Endometrial Cancer Molecularly Targeted Therapy (ECMT2) Consortium study. (PubMed, Int J Gynecol Cancer)
    The complete response to levonorgestrel intra-uterine device therapy was lower than expected for endometrial intra-epithelial neoplasia. Response rates varied by molecular classification, with worse outcomes observed in deficient mismatch repair and p53 abnormal sub-types. Although limited by sample size, these findings suggest that levonorgestrel intra-uterine device therapy may not be sufficient for all molecular sub-groups.
    Journal
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    TP53 (Tumor protein P53) • POLE (DNA Polymerase Epsilon) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2)
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    MSI-H/dMMR • TP53 wild-type • POLE mutation
    7d
    Communication With Clinicians and Relatives About Cascade Genetic Testing in Cancer Patients With Germline Pathogenic Variants. (PubMed, JCO Precis Oncol)
    Patients with cancer are motivated to communicate PV results to relatives. However, few clinicians are involved and relatives' testing remains low. Novel care delivery models are needed to advance cascade testing and precision risk reduction.
    Journal • BRCA Biomarker
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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) • PALB2 (Partner and localizer of BRCA2) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • SMAD4 (SMAD family member 4) • PMS2 (PMS1 protein homolog 2) • CDH1 (Cadherin 1) • CHEK2 (Checkpoint kinase 2) • BRIP1 (BRCA1 Interacting Protein C-terminal Helicase 1) • POLD1 (DNA Polymerase Delta 1) • RAD51C (RAD51 paralog C) • RAD51D (RAD51 paralog D) • EPCAM (Epithelial cell adhesion molecule) • BARD1 (BRCA1 Associated RING Domain 1) • BMPR1A (Bone Morphogenetic Protein Receptor Type 1A)
    8d
    Pathogenic Germline Variants in a Racially Diverse Real-World Cohort of Patients With Prostate Cancer. (PubMed, J Natl Compr Canc Netw)
    These data support NCCN Guideline-recommended universal genetic testing for patients with aggressive PCa.
    Journal • Real-world evidence • BRCA Biomarker
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    BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2) • CHEK2 (Checkpoint kinase 2)
    12d
    Lynch syndrome with MLH1 germline variant in an extended family: a case report. (PubMed, Open Life Sci)
    Based on the clinical, pathological, and genetic findings, the extended family was diagnosed with LS. Taken together, MLH1 c.1652A>C (p.N551T) variant may contribute to carcinogenesis, and its co-segregation with LS in this family provides supportive evidence for its potential pathogenicity.
    Journal
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    MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2)
    13d
    Identification of Lynch syndrome among people newly diagnosed with endometrial cancer: a prospective audit. (PubMed, J Med Genet)
    The prevalence of Lynch syndrome in our unselected endometrial cancer population was 3.2% but not everyone at risk was tested. Some declined germline Lynch syndrome testing due to a lack of at-risk family members and delay getting their genetic appointment. A significant minority died before they could be offered or receive Lynch syndrome testing. We recommend gynaecology-led germline testing and referral to clinical genetics only patients with confirmed Lynch syndrome. This approach would ease the burden of an already overstretched genetics service while promptly identifying Lynch syndrome in high-risk patients. This in turn enables timely colorectal cancer surveillance and cascade testing of at-risk family members.
    Journal
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    MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2)
    13d
    Oncological and reproductive outcomes following fertility-preserving treatment in mismatch repair-deficient endometrial cancer or atypical endometrial hyperplasia. (PubMed, BMC Womens Health)
    Patients with MMRd EEC or AEH undergoing fertility-preserving treatment demonstrated relatively low remission rates, high recurrence rates, and suboptimal reproductive outcomes. Careful risk assessment and close surveillance for recurrence are warranted for patients desiring fertility.
    Journal • Mismatch repair • dMMR
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    MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • PMS2 (PMS1 protein homolog 2)
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    MSI-H/dMMR
    13d
    A Study of Magnetic Resonance Imaging of the Pancreas for Cancer Screening (clinicaltrials.gov)
    P=N/A, N=79, Recruiting, Memorial Sloan Kettering Cancer Center
    New trial
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    TP53 (Tumor protein P53) • BRCA1 (Breast cancer 1, early onset) • BRCA2 (Breast cancer 2, early onset) • STK11 (Serine/threonine kinase 11) • CDKN2A (Cyclin Dependent Kinase Inhibitor 2A) • MLH1 (MutL homolog 1) • MSH6 (MutS homolog 6) • MSH2 (MutS Homolog 2) • APC (APC Regulator Of WNT Signaling Pathway) • EPCAM (Epithelial cell adhesion molecule) • PRSS1 (Serine Protease 1) • CTRC (Chymotrypsin C)
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    TP53 mutation • BRCA1 mutation • ATM mutation • STK11 mutation • PALB2 mutation