Little more than two months after inking a $2 billion-plus commercialization deal with Swiss oncology specialist Helsinn Group around the fibroblast growth factor receptor (FGFR) inhibitor infigratinib, Bridgebio Pharma Inc.'s subsidiary, QED Therapeutics Inc., has won accelerated FDA approval for the therapy, to be marketed as Truseltiq. Approval for the oral medicine covers the treatment of patients with previously treated locally advanced chemotherapy-resistant bile duct cancer (cholangiocarcinoma) harboring an FGFR2 fusion or rearrangement as detected by an FDA-approved test.

Molybdenum cofactor deficiency (MoCD) type A, an ultra-rare metabolic disorder causing intractable seizures, brain injury and death, now has a world-first treatment in Nulibry (fosdenopterin), a new I.V. therapy developed by Bridgebio Pharma Inc. subsidiary Origin Biosciences Inc. The agency's priority review, supported by its orphan, breakthrough and rare pediatric disease programs, also yielded a priority review voucher (PRV) for Origin.

Drugs for rare diseases now account for 31% of R&D pipelines, up from 18% in 2010 and just 11% in 2005, according to a report from the Tufts Center for the Study of Drug Development. That's currently nearly 3,500 drugs in development, more than double the 1,530 in 2010.