Phase 2

Phase 2 clinical trials are designed to study an investigational therapy in a larger group of people to determine efficacy and to further evaluate its safety. It is conducted in participants with the condition or disease under study and will determine common short-term adverse effects and risks.

Sourced From
National Institute on Aging (NIA) Glossary of Clinical Research Terms
U.S. Food and Drug Administration (FDA) The Drug Development Process: Step 3 Clinical Research
Learn More
NCATS Toolkit for Patient-Focused Therapy Development: Clinical Trials
NCATS Toolkit for Patient-Focused Therapy Development: Educating Your Disease Community

Synonyms:
Phase II
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