Clinical Trials

Biogen’s mission is to discover, develop and deliver innovative therapies that improve the lives of patients. We are grateful to the patients, healthy volunteers, families, hospitals and clinics that participate in the clinical trials for testing our potential therapies. Each individual’s participation contributes enormously to our understanding of disease and has the potential to benefit patients around the world.

Deciding to participate in a clinical trial requires careful consideration. In most cases, the therapies investigated in clinical trials are not yet approved by regulatory agencies like the Food and Drug Administration (FDA) in the United States. The benefits and risks of taking the treatment are not completely known. By volunteering for a clinical trial, you are helping the medical community determine whether new treatments are safe and effective.


About the clinical trial process 

Biogen is conducting numerous clinical trials in neurologic and immunologic diseases to evaluate the efficacy and safety of potential therapies.



Access to investigational therapies outside of clinical trials 

Patients may potentially gain access to an investigational therapy or a therapy that is not yet approved in their country through our expanded access programs.

Learn more


Please contact with questions regarding Biogen-sponsored clinical research.


For Investigators

If you are interested in learning more about our clinical programs and how you can get involved in our research, please contact us at

Learn more about Investigator-Initiated Trial grants (IITs)


Transparency & Data Sharing

Learn more about Biogen’s Clinical Trial Transparency policy, including access study-level clinical trial summary results or to request access to study-level and patient-level clinical trial information.



Biogen-187314    Date of preparation: October 2022