A test tube is seen in front of displayed Biogen logo in this illustration taken on, December 1, 2021. Biogen on Wednesday reported first-quarter profit that topped estimates as the company's cost-cutting efforts took hold and sales of its closely watched Alzheimer's drug, Leqembi, came in higher than expected. Biogen and Eisai's Leqembi became the first drug found to slow the progression of Alzheimer's disease to win approval in the U.S. in July. The treatment's launch has been sluggish, but uptake appeare ...