Amgen Inc. is paying $3.7 billion in cash to buy Chemocentryx Inc. The deal, with Amgen paying $52 per share for Chemocentryx stock, brings Amgen Tavneos (avacopan), a first-in-class medicine for treating antineutrophil cytoplasmic antibody-associated vasculitis, which destroys small blood vessels.
European regulators have put off a decision on Biogen Inc and Eisai, Co. Ltd.’s controversial Alzheimer’s drug, aducanumab, for likely another month, after the companies announced further supportive data from a follow-up under review by the FDA.
Less than two weeks after Japan’s MHLW became the first regulatory agency to clear avacopan for anti-neutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis, the FDA has followed suit. It cleared the oral, small-molecule C5aR antagonist for use as an adjunct therapy for adults with the two main forms of the rare autoimmune renal disease, granulomatosis with polyangiitis and microscopic polyangiitis, in combination with standard therapy.
Stock-price weakness that has beset Chemocentryx Inc. since early March – likely based on jitters ahead of the FDA advisory panel for avacopan slated for May 6 – became an outright tumble when Wall Street got a gander at briefing documents related to the meeting. Shares of the San Carlos, Calif-based firm (NASDAQ:CCXI) closed at $22.19, down $26.63, or 45%, as company backers sifted paperwork on the complement C5a receptor inhibitor for anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitis. The compound has been assigned a PDUFA date of July 7.
Positive phase III data from the Advocate trial by Chemocentryx Inc. and Vifor Fresenius Medical Care Renal Pharma caused Chemocentryx’s stock (NASDAQ:CCXI) to dramatically rise 281% on Tuesday, clearing the way to an NDA filing for the star small-molecule attraction, avacopan, an oral, selective complement 5a receptor inhibitor.