Phase 2

A middle-stage study looking at what a treatment does and watching for side effects.

Learning 

What it means

Phase 2 studies enrol more people than Phase 1 — often up to a few hundred — and look at what the treatment does in the condition it is meant for, while continuing to monitor safety.

Why it matters if you take part

By this stage there is early safety information, but the treatment is not yet proven and is not approved for general use.

Related terms

Trials recruiting now that are Phase 2

695 recruiting trials in our Canadian corpus are Phase 2.

This explains how clinical research works. It is not medical advice and does not describe any specific condition or treatment. Only a trial site can determine whether someone can take part in a study.