New Drug Approved for Early Alzheimer’s

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The Food and Drug Administration on Tuesday approved a new drug for Alzheimer’s disease, the latest in a novel class of treatments that has been greeted with hope, disappointment and skepticism. The drug, donanemab, to be sold under the brand name Kisunla, was shown in studies to modestly slow the pace of cognitive decline in early stages of the disease. It also had significant safety risks, including swelling and bleeding in the brain. Kisunla, made by Eli Lilly, is similar to another drug, Leqembi, approved last year. Both are intravenous infusions that attack a protein involved in Alzheimer’s, and both can slow the unfolding of dementia by several months. Both also carry similar safety risks. Leqembi, made by Eisai and Biogen, is given every two weeks; Kisunla is given monthly. Kisunla has a significant difference that may appeal to patients, doctors and insurers: Lilly says patients can stop the drug after it clears the protein, amyloid, which clumps into plaques in the brains of people with Alzheimer’s.