Peginterferon beta-1a

A Study to Learn More About The Safety of Diroximel Fumarate (VUMERITY®) in Participants Who Took it During Pregnancy And About the Health of Their Babies

Pharmacodynamic Biomarkers to Support Biosimilar Development: Interferon Beta-1A Products

Plegridy Satisfaction Study in Participants

Study to Evaluate the Efficacy and Safety of Dimethyl Fumarate (Tecfidera) and Peginterferon Beta-1a (Plegridy) for the Treatment of Relapsing-Remitting Multiple Sclerosis in Pediatric Participants

Plegridy Observational Program

Biogen Multiple Sclerosis Pregnancy Exposure Registry

The Containing Coronavirus Disease 19 (COVID-19) Trial

Evaluate Safety/Tolerability in Portuguese Participants With RRMS Transitioning From Current Therapy

Long-Term Safety and Efficacy Study of Peginterferon Beta-1a

Brimonidine Tartrate for the Treatment of Injection Related Erythema

Study to Evaluate the Pharmacokinetic Profiles of BIIB017 (Peginterferon Beta-1a) and Rebif® (Interferon Beta-1a) in Healthy Volunteers

Pharmacokinetic Study of Peginterferon Beta-1a in Japanese and Caucasian Adult Healthy Participants.