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Types of Clinical Trials

Types of Clinical Trials
Clinical trials are divided into four phases, depending on what kind of information researchers are seeking.

Phase I Studies
Involve a small number of patients and are designed to determine the best tolerated dose of a new medication.

Phase II Studies
Evaluate the correct dosing of new medication, and the effectiveness of a new treatment plan.

Phase III Studies
Evaluate dose amounts and how well a disease responds to the treatment. In these studies, researchers compare new medications with standard treatments or placebos.

Phase IV Studies
Are conducted with approved marketed drugs to gain more information.
Currently GRCOP is involved in Phase II and Phase III studies.