DrugEvidence

Companies / Biogen

Biogen

Company

Biogen is an American multinational biotechnology company headquartered in Cambridge, Massachusetts, focused on treatments for neurological diseases. Founded in 1978, the company markets therapies across neurology indications and is publicly traded on Nasdaq.

Trials
508
Recruiting
18
Completed
356
With results
126

Last revised

Pipeline

Phase by status

PhaseRecruitingNot yetBy invitationActiveCompletedTerminatedWithdrawnApproved for marketingNo longer availableTotal
Early Phase 1 2 2
Phase 1 42139172 164
Phase 1/2 751 13
Phase 2 2159237 92
Phase 2/3 12 3
Phase 3 613647263 92
Phase 4 12966 42
Not applicable 3 3
Unknown 666813112 97

Trials started per year

2021
11
2022
15
2023
15
2024
11
2025
14
2026
10

Conditions studied, by phase

ConditionEarly Phase 1Phase 1Phase 1/2Phase 2Phase 2/3Phase 3Phase 4Not applicableUnknownTotal
Multiple Sclerosis 1101312519146 116
Multiple Sclerosis, Relapsing-Remitting 49252119 78
Muscular Atrophy, Spinal 5139126 27
Arthritis, Rheumatoid 1105 16
Alzheimer Disease 5241 12
Recurrence 3171 12
Crohn Disease 2324 11
Parkinson Disease 361 10
Renal Insufficiency, Chronic 342 9
Amyotrophic Lateral Sclerosis 31112 8

Most active sponsors

#SponsorTrialsPhase 3
1Biogen50895

Frequent collaborators

#CollaboratorTrials
1Elan Pharmaceuticals25
2AbbVie14
3Denali Therapeutics Inc.4
4Acorda Therapeutics2
5Alkermes, Inc.2
6Celerion2
7Ionis Pharmaceuticals, Inc.2
8Q2 Solutions2
9Alcyone Therapeutics, Inc1
10Altasciences Company Inc.1

Most studied interventions

#InterventionTrials
1Natalizumab59
2Dimethyl Fumarate48
3Interferon beta-1a37
4bardoxolone methyl24
5vixotrigine20
6omaveloxolone19
7nusinersen18
8peginterferon beta-1a16
9zuranolone16
10PF-0495824214

Evidence

Results reported
35.4%126 of 356 completed
Published
3.9%14 of 356 completed
Primary endpoint met
43.8%53 of 121 analyses
Median months to report
12

Documents disclosed

Protocol available
69
Statistical analysis plan
69
PubMed citations
20

Trial profile

Median enrollment
74
Median duration
21months
Countries
70
Study sites
6398

Who is enrolled

Adults
487
Children
75
Older adults
314
Healthy volunteers
127

Median enrollment by phase

Early Phase 1
16
Phase 1
36
Phase 1/2
37
Phase 2
97
Phase 2/3
187
Phase 3
221
Phase 4
70
Not applicable
93
Unknown
289

Where trials run

United States
341
Germany
109
United Kingdom
107
Canada
83
France
80
Italy
78
Spain
74
Belgium
62
Australia
61
Poland
60

Busiest cities

#CityCountryTrials
1BostonUnited States93
2DallasUnited States88
3New YorkUnited States82
4St LouisUnited States72
5LondonUnited Kingdom69
6PhiladelphiaUnited States69
7AtlantaUnited States68
8HoustonUnited States68
9Los AngelesUnited States68
10ChicagoUnited States60

Terminations

Terminated
90
Withdrawn
20
Stopped for recruitment
1.8%9 of 508 trials

Stated reasons

Other / unclear
41
Business decision
23
Safety
18
Lack of efficacy
14
Recruitment
9
Regulatory
3
COVID-19
2

Reasons are grouped from the sponsor's own wording with a rule-based classifier; the original text is shown below.

Recently stopped

TrialStatusStated reasonStopped
NCT02428218 Withdrawn Withdrawn Feasibility 2027-01-31
NCT03637387 Withdrawn Withdrawn Sponsor Decision 2026-09-29
NCT03070132 Withdrawn Withdrawn Sponsor Decision 2026-08-21
NCT05764122 Withdrawn Withdrawn Sponsor decision 2025-07-07
NCT04079088 Withdrawn Withdrawn Decision to discontinue BIIB061 program was based on lack of stronger preclinical effects of BIIB061 on remyelination relative to opicinumab, that showed limited clinical efficacy in phase 2 clinical studies. This was not related to safety concerns. 2024-09-18
NCT04494256 Terminated Terminated Sponsor's decision 2024-08-13
NCT05310071 Terminated Terminated Sponsor's Decision 2024-08-12
NCT05701423 Terminated Terminated Due to low enrolment the sponsor decided to terminate the study 2024-07-31
NCT04241068 Terminated Terminated Sponsor's Decision 2024-07-22
NCT05265728 Terminated Terminated Due to sponsor decision, not for efficacy or safety reasons. 2024-05-27

Trial records

Individual study records live on ClinicalTrials.gov. A sample of the trials counted above:

Search all Biogen trials on ClinicalTrials.gov →