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Profile Name | RET M918T |
Gene Variant Detail | |
Relevant Treatment Approaches | RET Inhibitor |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|
ATM L804fs ATM S978fs RET M918T | medullary thyroid carcinoma | predicted - sensitive | Everolimus + Vandetanib | Case Reports/Case Series | Actionable | In a clinical case study, addition of Afinitor (everolimus) to Caprelsa (vandetanib) treatment resulted in significant tumor reduction in a medullary thyroid carcinoma patient harboring ATM L804fs*4, ATM S978fs*12, and RET M918T, that achieved prolonged stable disease on Caprelsa (vandetanib) treatment alone (PMID: 27683183). | 27683183 |
RET V804M RET M918T | medullary thyroid carcinoma | resistant | Everolimus + Vandetanib | Case Reports/Case Series | Actionable | In a clinical case study, a patient with thyroid medullary carcinoma harboring RET M918T progressed on multiple therapies, including Nexavar (sorafenib), Caprelsa (vandetanib), Cometriq (cabozantinib), MGCD-516 (sitravatinib), and RXDX-105 (CEP-32496), and upon progression with the combination therapy, Caprelsa (vandetanib) and Afinitor (everolimus), cell-free DNA testing revealed RET M918T and acquisition of a secondary drug resistant mutation, RET V804M (PMID: 29912274; NCT03157128). | 29912274 |
RET V804M RET M918T | medullary thyroid carcinoma | predicted - sensitive | Selpercatinib | Case Reports/Case Series | Actionable | In a clinical case study, a patient with thyroid medullary cancer harboring RET M918T and RET V804M demonstrated an initial response to Retevmo (selpercatinib), which included a decrease in allelic fraction of RET M918T and RET V804M over 8 weeks and a radiographic response of nearly 54% post 6.9 months of treatment (PMID: 29912274; NCT03157128). | 29912274 |
RET V804M RET G810S RET L881V RET M918T | medullary thyroid carcinoma | predicted - resistant | Selpercatinib | Case Reports/Case Series | Actionable | In a clinical case study, a patient with hereditary medullary thyroid carcinoma harboring germline RET M918T demonstrated disease progression following an initial response to Retevmo (selpercatinib), and ctDNA sequencing revealed a decrease in RET L881V, but an increase in RET V804M and RET G810S (PMID: 31988000). | 31988000 |
RET V804M RET M918T | Advanced Solid Tumor | predicted - sensitive | Selpercatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Retevmo (selpercatinib) inhibited cell growth and Ret phosphorylation in transformed cells expressing RET V804M and M918T in culture (PMID: 33161056). | 33161056 |
RET V804M RET G810C RET M918T | Advanced Solid Tumor | resistant | Selpercatinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing RET V804M, G810C, and M918T were resistant to Retevmo (selpercatinib) treatment in culture (PMID: 33161056). | 33161056 |
RET V804M RET G810S RET M918T | Advanced Solid Tumor | resistant | Selpercatinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing RET V804M, G810S, and M918T were resistant to Retevmo (selpercatinib) treatment in culture (PMID: 33161056). | 33161056 |
RET V804M RET Y806C RET M918T | Advanced Solid Tumor | predicted - resistant | Selpercatinib | Preclinical - Biochemical | Actionable | In a preclinical study, transformed human cells expressing RET M918T, V804M, and Y806C in cis were resistant to Retevmo (selpercatinib) in culture (PMID: 35304457). | 35304457 |
RET G810S RET M918T | Advanced Solid Tumor | predicted - sensitive | TY-1091 | Preclinical - Biochemical | Actionable | In a preclinical study, TY-1091 inhibited activity in a cell line expressing RET G810S and M918T in culture (Cancer Res (2023) 83 (7_Supplement): 3419). | detail... |
RET Y806C RET M918T | medullary thyroid carcinoma | predicted - resistant | Pralsetinib | Case Reports/Case Series | Actionable | In a retrospective analysis, a medullary thyroid carcinoma patient harboring RET M918T progressed on treatment with Gavreto (pralsetinib) and was found to have acquired RET Y806C (PMID: 38127829; NCT03157128, NCT03037385, NCT03780517). | 38127829 |
RET Y806C RET M918T | medullary thyroid carcinoma | predicted - resistant | Selpercatinib | Case Reports/Case Series | Actionable | In a retrospective analysis, a medullary thyroid carcinoma patient harboring RET M918T progressed on treatment with Retevmo (selpercatinib) and was found to have acquired RET Y806C (PMID: 38127829; NCT03157128, NCT03037385, NCT03780517). | 38127829 |
RET G810N RET M918T | medullary thyroid carcinoma | predicted - resistant | Selpercatinib | Case Reports/Case Series | Actionable | In a retrospective analysis, a medullary thyroid carcinoma patient harboring RET M918T progressed on treatment with Retevmo (selpercatinib) and was found to have acquired RET G810N (PMID: 38127829; NCT03157128, NCT03037385, NCT03780517). | 38127829 |