About IBIS

This risk assessment tool was developed by scientists at the Wolfson Institute of Preventive Medicine, Queen Mary University of London and is provided for non-commercial research purposes only. No responsibility is accepted for clinical decisions arising from its use.

This risk assessment calculator is available to individuals only; it is not for clinical or commercial use. Commercial use requires a license.

IBIS Risk Assessment Tool v8.0b

This tool estimates the likelihood of a woman developing breast cancer specifically within 10 years of her current age and over the course of her lifetime. The tool is utilized to inform women and help support the decision making process for genetic counseling and testing.

The risks provided account for competing mortality, so there is allowance for death from other causes than breast cancer.

Note: This tool is not intended to assess the risk for women who have already been diagnosed with breast cancer.
System of Measurement:
  • Imperial Units
  • Metric Units
Breast Density Measure:
  • Unknown
  • Volpara
  • VAS
Personal History: Please enter the woman's age, weight and height below...
Current Age:
What was the woman's age at the time of her first menstrual period?
Has the woman given birth to one or more children?
  • Unknown
  • No
  • Yes
Has the woman gone through menopause?
  • Don't Know
  • No
  • Yes
  • In Menopause Now
Hormone Replacement Therapy (HRT) Usage?
  • Never
  • Stopped use 5 or more years ago
  • Stopped use less than 5 years ago
  • Current User
BRCA Gene: Does the woman have a mutation in either the BRCA1 or BRCA2 gene?
  • Unknown
  • Tested, Normal
  • BRCA1+
  • BRCA2+
Ovarian Cancer: Has the woman had OVARIAN cancer?
  • No
  • Yes
Breast Biopsy: Has the woman had a breast biopsy?
  1. No prior biopsy / no proliferative disease

  2. Prior biopsy, result unknown

  3. Hyperplasia (not atypia)

  4. Atypical Hyperplasia

  5. Lobular Carcinoma in Situ (LCIS)

Family History:
Family history is an important factor in determining risk, especially if there is a history of breast or ovarian cancer in the woman's family.
Ashkenazi Inheritance?
  • No
  • Yes
To add a family member to the woman's family history, click the "Add Family Member" button below
Add Family Member

This site is provided free for individual patient use only. By clicking the calculate button I certify that I am calculating my own personal risk score and not on behalf of a medical practice.
Clear Risk Factors
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