The biotechnology company discovers and manufactures treatments for autoimmune disorders, neurodegenerative diseases and hemophilia.
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News about Biogen
There still aren't any truly effective drugs for Alzheimer's or dementia.
Novartis and Amgen want to find out with an experimental drug.
AbbVie and Alector hope to apply immunotherapy to dementia and Alzheimer's.
U.S.-based firms made up a fifth of those in a 2017 "A list."