Chiesi Group’s idebenone faced a regulatory setback last month after the U.S. FDA issued a complete response letter (CRL) to the company’s NDA for Leber hereditary optic neuropathy (LHON), a rare inherited disorder that causes sudden vision loss.But a chance missed for Chiesi may be an opportunity for gene therapies, including Gensight Biologics SA’s lenadogene nolparvovec (Lumevoq; GS-010).

While inflation in the U.S. is hovering below 3%, increases in some FDA user fees for fiscal 2026 are tripling that rate. PDUFA fees for branded prescription drugs and biological products will see a 9% hike come Oct. 1, and the increase in MDUFA fees will more than double the inflation rate with a 7% hike across the board.

In a 10-1 vote, the U.S. FDA’s Psychopharmacologic Drugs Advisory Committee said Otsuka Pharmaceutical Co. Ltd.’s studies of its combination post-traumatic stress disorder (PTSD) treatment did not show enough efficacy. Had the adcom felt otherwise, the path may have been smoother for a new treatment in an indication that hasn’t seen regulatory advancement in decades. The committee’s conclusion, however, is not binding on the FDA, which will make its own decision whether to approve.