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Oncology Clinical Trials: Phases, Protocols, and Informed Consent

How to evaluate trial eligibility with your oncologist and understand placebo rules.

Published by OncoGuides Editorial Team • Reading Time: 8 min read • Public Reference Guide (No Login Required)

Trial Phases (Phase I to Phase IV)

Phase I tests safety and dosing; Phase II tests efficacy; Phase III tests against standard-of-care.

In oncology trials, placebos are never given in place of standard-of-care; experimental drugs are added to standard therapies.

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