Molecular Profile Detail

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Profile Name RET Y806C
Gene Variant Detail

RET Y806C (gain of function - predicted)

Relevant Treatment Approaches RET Inhibitor

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
RET C634R RET Y806C Advanced Solid Tumor resistant Vandetanib Preclinical - Cell culture Actionable In a preclinical study, transformed human cells co-expressing RET C634R and RET Y806C were resistant to treatment with Caprelsa (vandetanib) in culture (PMID: 19029224). 19029224
RET V804M RET Y806C medullary thyroid carcinoma not applicable N/A Guideline Risk Factor Compound germline RET V804M and Y806C mutations result in multiple endocrine neoplasia, type 2B (MEN 2B), which is associated with high risk of developing thyroid medullary carcinoma (NCCN.org). detail...
RET V804M RET Y806C Advanced Solid Tumor decreased response Selpercatinib Preclinical - Biochemical Actionable In a preclinical study, transformed human cells expressing RET V804M and Y806C in cis were less sensitive to Retevmo (selpercatinib) in culture (PMID: 35304457). 35304457
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 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