This calculator takes about five minutes to complete.
About the Calculator
The Breast Cancer Risk Assessment Tool (BCRAT), also known as The Gail Model, allows health professionals to estimate a woman's risk of developing invasive breast cancer over the next five years and up to age 90 (lifetime risk).
The tool uses a woman's personal medical and reproductive history and the history of breast cancer among her first-degree relatives (mother, sisters, daughters) to estimate absolute breast cancer risk—her chance or probability of developing invasive breast cancer in a defined age interval.
Calculator Limitations
The tool has been validated for women in the United States who identify as White, Black/African American, Hispanic, and Asian and Pacific Islander.
The tool may underestimate risk in Black/African American women with previous biopsies and Hispanic women born outside the United States. Because data on American Indian/Alaska Native women are limited, their risk estimates are partly based on data for White women and may be inaccurate. Further studies are needed to refine and validate these models.
This tool cannot accurately estimate breast cancer risk for:
- Women carrying a breast-cancer-associated mutation in BRCA1 or BRCA2
- Women with a previous history of invasive or in situ breast cancer (lobular carcinoma in situ or ductal carcinoma in situ)
- Women with certain other subgroups
Other Risk Assessment Tools may be more appropriate for these women.
Although a woman's risk may be accurately estimated, these predictions do not allow one to say precisely which woman will develop breast cancer. In fact, some women who do not develop breast cancer have higher risk estimates than some women who do develop breast cancer.