This phase 2 trial investigated the efficacy of motesanib diphosphate, an orally active inhibitor of VEGF receptors, in patients with advanced differentiated thyroid cancer. None of the patients had had a response to conventional treatment. No patient had a complete response, but 14% had a partial response, with a median duration of 32 weeks. Motesanib diphosphate is an option for patients with metastatic or locally progressive differentiated thyroid cancer who have not had a response to usual treatment.
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