The U.S. Food and Drug Administration (FDA) is recommending an additional, earlier magnetic resonance imaging (MRI) monitoring prior to the 3rd infusion for patients with Alzheimer’s disease taking Leqembi (lecanemab). The earlier monitoring can identify individuals with amyloid-related imaging abnormalities with edema (ARIA-E), which is characterized by brain swelling or fluid buildup. ARIA-E is usually asymptomatic, although serious and life-threatening events, including seizure and status epilepticus, can occur and there have been deaths.
