Blood hormone levels during breast cancer treatment in young women

This study is following young women with early-stage breast cancer (or those with a BRCA gene mutation) to understand how cancer treatment affects the ovaries and future fertility. Researchers will measure hormone levels in your blood before, during, and after cancer treatment to see which women might experience early menopause. This information could help doctors better counsel young patients about their options for preserving fertility before starting cancer treatment.

Women with BRCA mutations and young women with breast cancer have higher risks of early menopause and infertility. Doctors need better ways to predict which women are at highest risk so they can discuss fertility preservation options—like egg freezing—before cancer treatment begins.