Platform Trial Oncology — SCE Medical Oncology MCQ
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Correct answer: C — Use selpercatinib because prior cabozantinib satisfies the targeted-treatment requirement
TA1038 recommends selpercatinib for advanced RET-mutant medullary thyroid cancer requiring systemic treatment after cabozantinib or vandetanib; failure of both is not required. Medullary carcinoma is not treated as iodine-avid differentiated thyroid cancer. Lenvatinib is not the RET-mutant MTC recommendation, and the established need for systemic treatment makes surveillance inappropriate.
Reference: NICE TA1038: selpercatinib for previously treated advanced thyroid cancer with RET alterations. https://www.nice.org.uk/guidance/ta1038/chapter/1-Recommendations