Total trials

506

Active

39

Phase 3

95

Total enrollment

290,141

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Pipeline matrix

Showing 33 of 33 active programs · click any cell for trials

InterventionEarly Phase 1Phase 1Phase 2Phase 3Phase 4N/ATotal
Tofersen7
Felzartamab5
Litifilimab5
Omaveloxolone15
Diroximel Fumarate8
Salanersen3
dimethyl fumarate38
Nusinersen16
Fingolimod3
BIIB0176
BIIB0594
Tacrolimus1
Standard of Care IST1
Interferon beta type 1a1
BIIB0802
BIIB1451
BIIB1151
BIIB1421
natalizumab44
Zuranolone3
peginterferon beta-1a10
Avonex5
glatiramer acetate5
Tysabri3
Nusinersen Sodium2
Interferon beta2
Disease-Modifying Therapies1
Alemtuzumab1
Ocrelizumab1
Ofatumumab1
Ozanimod1
Ponesimod1
Siponimod1

Next readouts

  • 2025-09-30
  • 2026-05-14
  • 2026-07-31
  • 2026-08-06
  • 2026-08-24
  • 2026-09-27
  • 2026-09-30
  • 2026-10-20
  • 2026-10-31
  • 2026-12-01

Top conditions

  • Multiple Sclerosis83
  • Healthy43
  • Relapsing-Remitting Multiple Sclerosis40
  • Healthy Volunteer25
  • Multiple Sclerosis, Relapsing-Remitting22
  • Healthy Volunteers22
  • Spinal Muscular Atrophy13
  • Rheumatoid Arthritis13

Frequently asked questions about Biogen

How many clinical trials does Biogen have on ClinicalTrials.gov?
Biogen is listed as the lead sponsor on 506 clinical trials in ClinicalTrials.gov, 39 of which are currently active (recruiting, enrolling, or ongoing).
How many of Biogen's trials are in Phase 3?
95 of Biogen's trials are in Phase 3, spread across 33 active drug programs.
What therapeutic areas does Biogen focus on?
Biogen's most-studied conditions on ClinicalTrials.gov are Multiple Sclerosis, Healthy, Relapsing-Remitting Multiple Sclerosis, Healthy Volunteer, Multiple Sclerosis, Relapsing-Remitting.
When are Biogen's next clinical trial readouts?
Biogen has 10 upcoming primary-completion readouts tracked here; the soonest is “A Study to Find Out How BIIB141 (Omaveloxolone) is Processed in the Body and to Learn More About Its Safety in Participants With Friedreich's Ataxia Aged 2 to 15 Years Old”, expected around 2025-09-30.