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FDA OK’s Puma Biotechnology’s cancer drug

Puma Biotechnology

Puma Biotechnology

The U.S. Food and Drug Administration has approved Puma Biotechnology’s neratinib for the extended adjuvant treatment of adult patients with early stage HER2-overexpressed/amplified breast cancer, to follow adjuvant trastuzumab-based therapy.

FDA said that approval was based on the ExteNET trial, a multicenter, randomized, double-blind, placebo-controlled trial of neratinib following adjuvant trastuzumab treatment. Women (n=2,840) with early-stage HER2-positive breast cancer and within two years of completing adjuvant trastuzumab were randomized to receive either neratinib (n=1420) or placebo (n=1420) for one year.

As the FDA reported, the major efficacy outcome measure was invasive disease-free survival (iDFS) defined as the time between the randomization date to the first occurrence of invasive recurrence (local/regional, ipsilateral or contralateral breast cancer), distant recurrence, or death from any cause, within two years and 28 days of follow-up. After two years, iDFS was 94.2% in patients treated with neratinib compared with 91.9% in those receiving placebo.

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