
FDA commissioner on accelerated approval reforms: 'Need to address as soon as possible'
As Congress punted the user fee riders on accelerated approval pathway reforms, FDA commissioner Rob Califf made clear at a conference this week that such reforms need to happen “as soon as possible.”
The comment, coming near the end of a speech Califf made Monday at the National Organization for Rare Disorders’ annual conference, followed similar suggestions for reforms as officials at the FDA’s Oncology Center of Excellence, who took to the NEJM late last month arguing for improvements to the agency’s ability to expeditiously pull dangling accelerated approvals, which occur when, on the rare occasion, confirmatory trials fail, but also better building “quality and efficiency into the AA on-ramp.”
The OCE officials made clear the need to ensure confirmatory trials are underway when an accelerated approval is granted, as they showed a median time to withdrawal of 3.8 years if the confirmatory trial was ongoing at the time of approval, compared with 7.3 years if such a trial had not been initiated.
“I want to call your attention to an issue that we need to address as soon as possible – accelerated approvals,” Califf said Monday. “While the process is intended to ensure the integrity of the data and analyses, the fact is that accelerated approvals based on biomarkers leave more uncertainty about the true risk and benefit. And regardless, many of these interventions will be approved based on a limited time frame of a clinical trial. And yet, the potential effects, both benefits and risks, will be manifested over a lifetime.”
The warning shot comes as a recent HHS OIG report raised concerns about the billions of dollars CMS spends on these accelerated approvals before clinical benefit is confirmed.
And the FDA’s OCE has sought to clean house when it comes to pulling ones that failed their confirmatory trials. ODAC recently evaluated one dangling accelerated approval, Oncopeptides’ Pepaxto, and one full approval, Secura Bio’s PI3K inhibitor Copiktra (duvelisib) as a third-line treatment for relapsed or refractory CLL or SLL with safety questions.
The outside experts voted against keeping either drug on the market, although both sponsors have since made clear that they won’t pull their drugs without a fight. The 2.5-day battle over Covis’ delayed accelerated approval this week also serves as a reminder of long and drawn out the withdrawal process can be, even if the confirmatory trial did not hit on its primary endpoint.
While calling for a faster system of evidence generation that confirms benefits and risks for accelerated approvals more quickly, Califf also stressed earlier in his speech the need to “expand the sources, quality, and types of data we use to analyze and overcome” trial challenges, including with real-world evidence and new biomarkers.
Thanks to PDUFA VII, the agency on Wednesday announced its new Advancing Real-World Evidence (RWE) program which will select certain participating sponsors to meet with agency staff up to four additional times before protocol development or study initiation to discuss the use of RWE in their development programs.
The FDA this week also doled out 19 new grants and two new contracts totaling more than $38 million in funds over the next four years to support clinical trials, natural history studies and regulatory science tools related to rare diseases.
And the agency is planning for FY 2023 grants linked to its new Rare Neurodegenerative Disease Grant Program which “does not have a final funding amount,” but “it is expected that the budget for this program will be approximately $2 million and the expected number of awards will be between two to four grants,” the FDA said.