Eisai Co., Ltd. (Headquarters: Tokyo, CEO: Haruo Naito, “Eisai”) and Biogen Inc. (NASDAQ:BIIB, Corporate headquarters: Cambridge, Massachusetts, CEO: Christopher A. Viehbacher, “Biogen”)) announced today that an application for manufacturing and marketing approval for lecanemab (generic name, U.S. brand name: LEQEMBI™), an anti-amyloid-β (Aβ) protofibril* antibody, in Japan has been designated for Priority Review by the Japanese Ministry of Health, Labour and Welfare (MHLW). Priority Review in Japan is granted to new medicines recognized as having high medical utility for serious diseases, and once designated for Priority Review, the target total review period is shortened.
In Japan, Eisai submitted the manufacturing and marketing approval for lecanemab to the Pharmaceuticals and Medical Devices Agency (PMDA) on January 16, 2023. This application is based on the results of the Phase III Clarity AD study and the Phase IIb clinical study (Study 201), which demonstrated that lecanemab treatment showed a reduction of clinical decline in early AD.
