54% of Confirmatory Studies Are Late Meeting Deadlines
A JAMA research letter says 54% of the 177 accelerated approval-related confirmatory studies conducted between 2012 and 2021 were late in meeting their FDA completion deadlines. “Trials for nononcologic indications (93% [15 of 16]) were more likely to be late than those for oncologic indications (46% [39 of 84]),” the JAMA letter says. “Trials for small molecule drugs (62% [40 of 65]) were more likely to be late than those for biologics (40% [14 of 35]).”
The letter notes that missed confirmatory clinical trials completion deadlines harm patients who are prescribed expensive drugs despite uncertain clinical benefits. “However, drug manufacturers face few consequences for delays,” it says. The recent Consolidated Appropriations Act for 2023 included accelerated approval reforms (FDA authority to require that confirmatory trials are under way before approval, progress reports every six months by manufacturers, and quicker procedures for withdrawing drugs that fail such studies). “It will be important to monitor whether these changes lead to fewer delays or whether additional authority is needed to assure that confirmatory trials are completed in a timely manner for the benefit of patients,” the letter says.