Breast Cancer Risk-Factor Illustration (Gail Inputs)
Explore selected Gail risk factors, then use the official NCI BCRAT for a validated clinical estimate.
Use the Breast Cancer Risk-Factor Illustration (Gail Inputs)
Risk Factors
Mother, sisters, and daughters only.
Educational illustration only—not NCI BCRAT. Do not use these values for screening, medication, or prevention decisions.
Fill in the risk factors and click Calculate Risk to see results.
Illustrative 5-Year Risk
—
probability of developing
invasive breast cancer
Illustrative Lifetime Risk
—
probability by age 90
(to lifetime)
Compared to average-risk women of same age
Your illustrative 5-year value
—
Illustrative age baseline
—
Interpretation
Do not compare this illustration with clinical action thresholds. Use the official NCI BCRAT.
Your risk factor profile
Summary
Explore selected Gail risk factors, then use the official NCI BCRAT for a validated clinical estimate.
How it works
- Enter your current age (35–85).
- Select the number of first-degree relatives (mother, sisters, daughters) diagnosed with breast cancer.
- Indicate the number of prior breast biopsies and whether any showed atypical hyperplasia.
- Select your age at first live birth (or if you have never been pregnant).
- Click Calculate to see your estimated 5-year and lifetime risk percentages.
Use cases
- Understanding personal breast cancer risk before a routine mammogram.
- Discussing screening frequency with a primary care physician.
- Visualizing how family history and biopsy records interact to change baseline statistical risk.
- Educational use to understand which risk factors influence the Gail Model score.
Frequently Asked Questions
Last updated: 2026-09-19 ·
Reviewed by Nham Vu