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From Phoenix5's Prostate Cancer Glossary
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Phase IV trial

Definition: Once a treatment has been approved and is being marketed, it is studied in a phase IV trial to evaluate side effects of the new treatment that were not apparent in the phase III trial. Thousands of people are involved in a phase IV trial. (CNet)

For more information: See clinical trials.


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Definitions are provided for education only and are not medical advice. Created exclusively for Phoenix5. © 2002 Phoenix5.