Analysts have already started tagging Cogent Biosciences Inc.’s bezuclastinib as potentially best in class, after the company presented impressive, though early stage, data at the European Hematology Association Congress in Vienna demonstrating promising efficacy and a possibly differentiating safety profile for the selective KIT D816V inhibitor in advanced systemic mastocytosis.
After surprising Wall Street by unanimously voting in favor of the gene therapy elivaldogene autotemcel (eli-cel) for early active cerebral adrenoleukodystrophy from Bluebird Bio Inc., the FDA’s Cellular, Tissue and Gene Therapies Advisory Committee met again June 10, this time to examine the risk-benefit profile of the company’s betibeglogene autotemcel (beti-cel) for people with transfusion-dependent beta-thalassemia.
The Cellular, Tissue and Gene Therapies Advisory Committee scrutinized Bluebird Bio Inc.’s gene therapy elivaldogene autotemcel (eli-cel) for early active cerebral adrenoleukodystrophy (CALD) in patients without a matched sibling donor.
Pointing to an anomalously high placebo response rate at eastern European trial sites in its Forward phase III trial testing fostamatinib in warm autoimmune hemolytic anemia (wAIHA), Rigel Pharmaceuticals Inc. executives remained confident there could be a path forward for the SYK inhibitor in treating the rare blood disorder. The disappointing top-line data, however, sent company shares (NASDAQ:RIGL) falling more than 60% June 8 to close at 70 cents, a penny above its same day 52-week low.
Wall Street took in stride mixed FDA briefing documents with regard to the upcoming adcom review of Bluebird Bio Inc.’s two gene therapy prospects, and shares of the company (NASDAQ:BLUE) closed at $3.61, up 63 cents, or 21%.
Alexion Pharmaceuticals Inc. has demonstrated the commercial potential for rare disease drugs with its complement inhibitor Soliris (eculizumab) and long-lasting follow-up Ultomiris (ravulizumab) driving blockbuster sales. A host of other companies are hoping to compete with Ultomiris, which is U.S. FDA-approved for paroxysmal nocturnal hemoglobinuria and atypical hemolytic uremic syndrome.
Sponsors developing PI3K inhibitors to treat hematologic malignancies in the U.S. may have to up their game if they want to get FDA approval. The Oncologic Drugs Advisory Committee voted 16-0, with one abstention, that future approvals of the drugs should be supported by randomized data. Given the FDA’s briefing document ahead of the April 21 meeting and its presentations to the committee, the agency is likely to follow that recommendation.
RSS
