FDA is Being Flexible in Fast Track Approvals: Post
Two Hyman, Phelps & McNamara attorneys say that the recent FDA approval of Chemo Research’s NDA for benznidazole to treat children with Chagas disease, that included giving the sponsor a tropical disease priority review voucher, is the latest approval demonstrating how flexible the agency has become in applying evidence needed for accelerated approval. Writing in their firm’s FDA Law Blog, the two say the benznidazole approval brings to 25 the number of FDA accelerated approvals. It was the sixth accelerated approval in the last 30 months, they say, compared with 19 such approvals in over 30 years before 3/2015.
The attorneys also note that Chagas was added to the list of tropical diseases eligible for a voucher after FDA held a Patient-Focused Drug Development meeting on the disease to hear from patients and advocates.
They also point out that a patient organization in Argentina spoke at the drug development meeting and partnered with Chemo Research in developing benznidazole, along with support from the Drugs for Neglected Diseases initiative. In response, the company said that a “substantial portion of any revenue derived from the future sale of the priority review voucher will be directed towards enhancing access to treatment of Chagas patients and improving patient health in other disease areas.”
The attorneys say that given the scrutiny that priority review voucher programs have received, redistributing funds from the sale of vouchers to patients in need, especially in tropical diseases that are endemic in lower income regions of the world, “may help to maintain this incentive so that it can continue to encourage development of drugs.”