FDA OKs Lilly’s Retevmo for Some Thyroid Cancers

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FDA has given traditional approval to Lilly’s Retevmo (selpercatinib) for adult and pediatric patients age two and older with advanced or metastatic RET fusion-positive thyroid cancer who require systemic therapy and who are radioactive iodine refractory (if radioactive iodine is appropriate). An agency notice says Retevmo received accelerated approval in 2020 for this indication for patients aged 12 and older.

Efficacy was evaluated in the LIBRETTO-001 clinical trial in 65 patients, FDA says. The most common adverse reactions were edema, diarrhea, fatigue, dry mouth, hypertension, abdominal pain, constipation, rash, nausea, and headache. The most common Grade 3 or 4 laboratory abnormalities were decreased lymphocytes, increased alanine aminotransferase, increased aspartate aminotransferase, decreased sodium, and decreased calcium.

The notice says the agency review used the Assessment Aid, submitted voluntarily by Lilly to facilitate the agency’s assessment. The application was granted breakthrough and orphan drug designations.

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