Phase III Clinical Trials

What Is a Phase III Clinical Trial?

Phase III studies aim to confirm the effectiveness of a drug candidate, collect more safety data, compare the compound to other available treatments, and answer further research questions. Phase III trials are much larger scale than Phase I or II studies, including a few thousand participants on average. This is the final stage before an investigator typically files for marketing approval.

Learning Objectives

• Discuss the goals of a Phase III Clinical Trial
• Describe the study design for a Phase III study
• Provide insight on next steps once a Phase III study is complete