Topline Results from Tofersen Phase 3 Study and its Open Label Extension in SOD1-ALS to be Presented at the American Neurological Association Annual Meeting

Biogen Inc. (Nasdaq: BIIB) today announced topline results from its pivotal Phase 3 VALOR study of tofersen (BIIB067), an investigational antisense oligonucleotide (ASO) drug being evaluated for people with superoxide dismutase 1 (SOD1) amyotrophic lateral sclerosis (ALS), will be presented at the upcoming American Neurological Association (ANA) 2021 virtual meeting, October 17-19, 2021.

ANA Presentation Details:Sunday, October 17, 2021, 4:20 p.m. ET – Results from the Phase 3 VALOR study and its open-label extension: evaluating the clinical efficacy and safety of tofersen in adults with ALS and confirmed SOD1 mutation, presented by Timothy Miller, M.D., Ph.D., principal investigator of VALOR and ALS Center Director at Washington University School of Medicine, St. Louis.

To access the presentation, please go to the Investors section of Biogen’s website at investors.biogen.com. Following the event, an archived version will be available on the website.

About TofersenTofersen is an antisense asset being evaluated for the potential treatment of SOD1-ALS. Tofersen binds to SOD1 mRNA, allowing for its degradation by RNase-H in an effort to reduce synthesis of SOD1 protein production. Biogen licensed tofersen from Ionis Pharmaceuticals, Inc. (Nasdaq: IONS) under a collaborative development and license agreement.

About BiogenAt Biogen, our mission is clear: we are pioneers in neuroscience. Biogen discovers, develops and delivers worldwide innovative therapies for people living with serious neurological and neurodegenerative diseases as well as related therapeutic adjacencies. One of the world’s first global biotechnology companies, Biogen was founded in 1978 by Charles Weissmann, Heinz Schaller, Kenneth Murray and Nobel Prize winners Walter Gilbert and Phillip Sharp. Today Biogen has the leading portfolio of medicines to treat multiple sclerosis, has introduced the first approved treatment for spinal muscular atrophy, commercializes biosimilars of advanced biologics and is focused on advancing research programs in multiple sclerosis and neuroimmunology, Alzheimer’s disease and dementia, neuromuscular disorders, movement disorders, ophthalmology, immunology, neurocognitive disorders, acute neurology and pain.

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