Womens Health and Breast Cancer

Breast Cancer-Clinical Trials

Phase 1 Trials: study whether a new treatment is safe to use over a range of doses. The treatment may be given to people with different types of cancers.

A phase 1 trial is mainly a drug safety study.

Phase 2 Trials: study how well a treatment works for a certain cancer, such as breast cancer. These trials may include between 25 and 100 people.

After a drug (or other therapy) is found to be effective in treating breast cancer in a phase 2 trials, a phase 3 trial will study it further.

Phase 3 Trials: study how well a new treatment (including surgical procedures) works compared to the standard treatment (standard of care).

Phase 4 Trials: study the long-term side effects of treatments or answer new questions about the treatment.