Lenvatinib is effective in advanced medullary thyroid cancer
Letting the patient know that multi‑targeted tyrosine‑kinase inhibitors such as Lenvatinib are a useful treatment option for metastatic medullary thyroid cancer.
Lenvatinib, a multi‑targeted tyrosine‑kinase inhibitor, was evaluated in a Phase 2 study of 59 patients with unresectable or metastatic medullary thyroid cancer (MTC). Treatment was given at 24 mg daily for 8 28‑day cycles with dose reductions for toxicity. Of the patients who completed the 8 cycles, 44 % achieved an objective response (36 % response rate). Both calcitonin and CEA levels fell in all treated subjects. Median progression‑free survival was 9 months. Toxicity led to dose reductions in 60 % of patients and discontinuation in 24 %.
MTC is a rare thyroid cancer that does not respond to radioactive iodine, so data suggesting a therapeutic benefit from Lenvatinib provides a new, FDA‑approved option for patients whose disease is not amenable to surgery or I‑131.
Evidence level: Sejtvonalas. Laboratóriumi sejtekben vizsgálták.
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