By Deena Beasley (Reuters) – The U.S. Food and Drug Administration will expedite its review of Eisai Co Ltd’s and Biogen Inc’s experimental Alzheimer’s drug lecanemab, with a decision due by Jan 6, 2023, the companies said on Tuesday. Lecanemab, like the partners’ previous drug Aduhelm, is an antibody designed to remove sticky deposits of a protein called amyloid beta from the brains of people with early Alzheimer’s, a disease that leads to memory loss and the inability to care for oneself. The FDA controversially approved Aduhelm in June last year, although only one of two late-stage trials s…