It’s official: Roughly half a year after the FDA granted an accelerated nod to Eisai and Biogen’s new Alzheimer’s disease med lecanemab, the companies have converted that green light into a full-fl | With a full approval in hand, Leqembi has become the first treatment shown to reduce the rate of disease progression and slow cognitive and functional decline in adults with Alzheimer’s disease under the FDA’s traditional approval pathway. Now, the companies can start with their wider launch effort.