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Molecular Profile RET M918T
Therapy Selpercatinib
Indication/Tumor Type thyroid gland medullary carcinoma
Response Type sensitive

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
RET M918T thyroid gland medullary carcinoma sensitive Selpercatinib Preclinical - Cell culture Actionable In a preclinical study, thyroid medullary carcinoma cells harboring RET M918T were sensitive to treatment with Retevmo (selpercatinib) in culture, demonstrating decreased cell proliferation (PMID: 29912274). 29912274
RET M918T thyroid gland medullary carcinoma sensitive Selpercatinib Case Reports/Case Series Actionable In a clinical case study, Retevmo (selpercatinib) treatment resulted in rapid clinical improvement and complete resolution of the brain metastasis in a patient with metastatic medullary thyroid carcinoma harboring RET M918T whose disease progressed on prior Cometriq (cabozantinib) treatment, an official partial extracranial response was achieved at 1 year of treatment, until disease progression at 17 months (PMID: 33154983). 33154983
RET M918T thyroid gland medullary carcinoma sensitive Selpercatinib Case Reports/Case Series Actionable In a clinical case study, a pediatric patient with previously treated metastatic medullary thyroid cancer harboring germ line RET M918T mutation achieved stable disease and remained on treatment after 5.2 months with Retevmo (selpercatinib) therapy (PMID: 32923911). 32923911
PubMed Id Reference Title Details
(29912274) Selective RET kinase inhibition for patients with RET-altered cancers. Full reference...
(32923911) Activity of the Highly Specific RET Inhibitor Selpercatinib (LOXO-292) in Pediatric Patients With Tumors Harboring RET Gene Alterations. Full reference...
(33154983) Systemic and CNS Activity of Selective RET Inhibition With Selpercatinib (LOXO-292) in a Patient With RET-Mutant Medullary Thyroid Cancer With Extensive CNS Metastases. Full reference...