The Breast Cancer Risk Assessment Tool is an interactive tool designed by scientists at the National Cancer Institute (NCI) and the National Surgical Adjuvant Breast and Bowel Project (NSABP) to estimate a woman's risk of developing invasive breast cancer. See About the Tool for more information.

The Breast Cancer Risk Assessment Tool may be updated periodically as new data or research becomes available.

• Risk Tool
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(Click a question number for a brief explanation, or read all explanations.)

1.	Does the woman have a medical history of any breast cancer or of ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS) or has she received previous radiation therapy to the chest for treatment of Hodgkin lymphoma?			Select Yes No
2.	Does the woman have a mutation in either the BRCA1 or BRCA2 gene, or a diagnosis of a genetic syndrome that may be associated with elevated risk of breast cancer?			Select Yes No Unknown
3.	What is the woman's age? This tool only calculates risk for women 35 years of age or older.			Select < 35 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85
4.	What was the woman's age at the time of her first menstrual period?			Select Unknown 7 to 11 12 to 13 > =14
5.	What was the woman's age at the time of her first live birth of a child?			Select Unknown No births < 20 20 to 24 25 to 29 > =30
6.	How many of the woman's first-degree relatives - mother, sisters, daughters - have had breast cancer?			Select Unknown 0 1 > 1
7.	Has the woman ever had a breast biopsy?			Select Unknown No Yes
	7a.	How many breast biopsies (positive or negative) has the woman had?		Select 1 > 1
	7b.	Has the woman had at least one breast biopsy with atypical hyperplasia?		Select Unknown No Yes
8. What is the woman's race/ethnicity?   Select White African American Hispanic Asian-American American Indian or Alaskan Native Unknown   8a. What is the sub race/ethnicity?   Select Chinese Japanese Filipino Hawaiian Other Pacific Islander Other Asian-American