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| Profile Name | RET C618R |
| Gene Variant Detail | |
| Relevant Treatment Approaches | RET Inhibitor |
| Molecular Profile | Indication/Tumor Type | Response Type | Relevant Treatment Approaches | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
|---|---|---|---|---|---|---|---|---|
| RET C618R | medullary thyroid carcinoma | predicted - sensitive | RET Inhibitor | Sorafenib | Case Reports/Case Series | Actionable | In a Phase II trial, Nexavar (sorafenib) treatment resulted in stable disease in one patient with medullary thyroid carcinoma harboring RET C618R (PMID: 20368568; NCT00390325). | 20368568 |
| RET C618R | medullary thyroid carcinoma | sensitive | RET Inhibitor | Selpercatinib | FDA approved - On Companion Diagnostic | Actionable | In a Phase I/II trial (LIBRETTO-001) that supported FDA approval, Retevmo (selpercatinib) treatment resulted in an objective response rate (ORR) of 69% (38/55, 5 complete and 33 partial responses) in previously treated adult and pediatric patients of 12 years and older with medullary thyroid cancer harboring RET mutations as detected by an approved test, including RET C618R; ORR was 73% (64/88) in treatment naive patients (PMID: 32846061; NCT03157128). | 32846061 detail... detail... |