• PERSONAL HISTORY
  • QUESTIONNAIRE
  • FAMILY HISTORY
  • YOUR RESULTS
  • FAQs

Tyrer-Cuzick Risk Assessment Calculator

This risk calculator uses your personal and family health history to estimate your chance of developing breast cancer. After completing it, you’ll get a risk score report which contains your score percentage, what it means for you, recommendations for screening based on your risk score, and information on whether you may qualify for genetic testing. We encourage you to download this report and share it with your doctor.

If you qualify or are interested in genetic testing, you can learn more through our partner, Myriad Genetics. Myriad is a leader in hereditary cancer testing and offers MyRisk®, a test that can identify inherited risk factors for cancers, like breast cancer. This information can help guide more personalized care tailored to your unique risk profile.

Please remember: This tool is to inform you, not replace medical advice. Please speak with your healthcare provider to decide what steps are best for you.

Attention Clinical Users: This free calculator is for non-commercial, including non-clinical use. Such would require a license. Learn more about a clinical license below: For breast imaging facilities: Click Here For providers: Click Here

Calculate Your Risk of Breast Cancer

Please complete the questionnaire below to the best of your ability. The Tyrer-Cuzick model is not intended to assess the risk of women who have already been diagnosed with breast cancer. If you have had breast cancer, do not proceed with completing the risk assessment below.

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years old
years old

Note: HRT includes estrogen-only or combined estrogen and progesterone but does not include hormonal birth control.

If you have had a breast biopsy and are unsure about which result to select below, this information should be displayed on your pathology report.

years old

If you are unsure about which breast density category you fall under, this information should be displayed on your last mammography report. If you have not had a mammogram in the past, or are unsure about which breast density category you fall under, select the "I don't know" option below.

cancer historyMother

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Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

cancer historyFather

Note: Please leave your response to this question as blank if you do not know or are unsure.

cancer historySisters

cancer historyDaughters

cancer historySon

cancer historyBrother(s)

Do any of your brothers have a daughter with a history of breast or ovarian cancer?
Add Niece

cancer historyPaternal Grandmother

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Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

cancer historyPaternal Aunts

cancer historyPaternal Half Sisters

cancer historyPaternal Uncle's Daughters

cancer historyMaternal Grandmother

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

years old

Note: Please leave your response to this question as blank if you do not know or are unsure.

cancer historyMaternal Aunts

cancer historyMaternal Half Sisters

cancer historyMaternal Uncle's Daughters

Your Results

The results below are based on the Tyrer-Cuzick v8 risk assessment model and show your lifetime risk of developing breast cancer compared to the age-adjusted US population average.

We encourage you to review all the information below, not just your risk score. The complete results include important context and recommendations that can help you understand what these numbers mean for you and your health decisions.

Important reminder: Even if your risk is at or below average, regular screening remains essential for early detection.

Your Breast Cancer Risk Score

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Disclaimer: This information is not intended as a substitute for professional healthcare or to replace a healthcare professional's evaluation. Always consult with a healthcare provider for advice concerning your health. Only your healthcare provider can determine if you have breast cancer. Do not disregard professional medical advice or delay seeking advice or treatment because of something you have read here.

Know Your Risk. Plan for your Future.

Why is hereditary cancer testing important?

Hereditary cancer testing is a type of genetic test. The Myriad MyRisk® Hereditary Cancer Test looks for genetic changes linked to a higher chance of developing certain cancers, like breast cancer. These genetic changes can be passed down in families. The MyRisk test can help identify hereditary cancer risks and empower you and your provider to take action for your health today and into the future.

How much does testing cost?

Most commercial and federally funded insurance plans cover hereditary cancer testing, and the majority of patients face no out-of-pocket costs for MyRisk testing.

Many people have zero additional cost for their genetic testing, but insurance coverage varies, and you may have out-of-pocket costs depending on your coverage. Once Myriad Genetics receives your saliva sample, you will receive your cost estimate via email. If it is greater than $249, you can call (800) 469-7423 within 3 days of receiving your cost estimate to discuss payment options. Once test results are ready, you may no longer change your payment method.

What happens after testing?

Your MyRisk test results are available ~2 weeks after your saliva sample is received at the lab. Watch this video to understand how it works, what your results could mean, and what comes next.

Get Ahead of Cancer

Hereditary Cancer Testing

What if you could do more to understand your risk of cancer? MagView has collaborated with Myriad Genetics to offer a hereditary cancer test called MyRisk®. This test can help you and your provider understand your risk of developing 11 different types of cancer, including breast cancer.

You can chat with a genetic counselor from DNA visit, a virtual care provider, to get started from the comfort of your home. There is no fee for your initial chat with a genetic counselor.

How Much Does Testing Cost?

Most commercial and federally-funded insurance plans cover hereditary cancer testing, and the majority of patients face no out-of-pocket costs for MyRisk testing.

Many people have zero additional cost for their genetic testing, but insurance coverage varies and you may have out-of-pocket costs depending on your coverage. Once Myriad Genetics receives your saliva sample, you will receive your cost estimate via email. If it is greater than $249, you can call (800) 469-7423 within 3 days of receiving your cost estimate to discuss payment options. Once test results are ready, you may no longer change your payment method.

Frequently Asked Questions

The Tyrer-Cuzick risk calculator can help determine the possibility of developing breast cancer during your lifetime. The purpose of this tool is to help you become better informed and assist you in how you should proceed with your breast cancer screening journey.

What is the Tyrer-Cuzick risk model and how is it used for breast cancer risk assessment?

The Tyrer-Cuzick model, sometimes referred to as the IBIS tool, provides a risk score that estimates the likelihood of a woman developing breast cancer over the course of her lifetime . The risk score is calculated using a variety of risk factors that include personal health history, as well as family health history. The score is typically expressed as a percentage.

What are the risk factors used to calculate a Tyrer-Cuzick risk score?

The major risk factors that determine a Tyrer-Cusick risk score are:

  • Age
  • Height
  • Weight
  • Age at first period
  • Age at first child birth
  • Menopause stage
  • Age at menopause
  • History of hormone use
  • Personal BRCA genetic test results (BRCA1 & BRCA 2)
  • Personal history of atypical breast biopsies (i.e. ADH, ALH, LCIS)
  • Personal history of ovarian cancer
  • Breast tissue density
  • Ashkenazi Jewish inheritance
  • Number of sisters
  • Number of daughters
  • Number of half sisters
  • Number of aunts
  • Family history of breast cancer
  • Age at which family history of breast cancer was diagnosed
  • Family history of breast cancer diagnosed in one breast or both breasts
  • Family history of ovarian cancer
  • Age at which family history of ovarian cancer was diagnosed
  • Family history of BRCA genetic test results

What does it mean to have dense breast tissue, and why does it matter for my Tyrer-Cuzick risk score?

Breast cancer research and advances in risk assessment have shown that having dense breasts is a contributing factor in determining a woman’s risk of breast cancer. Dense breast tissue refers to the appearance of breast tissue on a mammogram and the makeup of supportive and fatty tissue in the breast. The more fatty tissue, the less dense the breast is. Dense breasts are common and can be caused by simply being younger, having a lower body mass index, or taking hormone therapy for menopause; researchers are still studying why some women have dense breasts and others do not.

Non-dense breast tissue appears dark and transparent, whereas dense breast tissue appears as a solid white area on a mammogram; this solid white area can make it hard for radiologists to accurately analyze the image with a mammogram alone. Therefore, your healthcare provider may recommend supplemental imaging, like a breast ultrasound or breast MRI, to increase the likelihood of finding cancer. Having dense breast tissue alone is not a cause for concern. You should speak with your healthcare provider about your breast tissue density and how it affects your risk status.

Why is it important for me to know my risk score?

Risk assessment can help breast centers tailor screening and follow up recommendations to ensure you are receiving the care you need. Risk assessment identifies women who are candidates for additional imaging, genetic counseling, genetic testing, and/or other specialized recommendations.

What is considered a high risk score for Tyrer-Cuzick?

Some facilities may have different guidelines, so you should check with your healthcare provider, but generally:

  • Less than 15% is considered average risk
  • Between 15-19% is considered intermediate risk
  • 20% or greater is considered high risk

If I’m adopted or lack information about my family’s medical history, how should I complete the risk assessment survey?

If you are adopted or do not have information about your family's cancer or genetic testing history, you may leave the Family History section of the risk assessment survey blank. Any unanswered fields will be treated as 'unknown' and factored into your risk score accordingly.

Are there other risk models like the Tyrer-Cuzick model?

Yes, there are other risk models such as Gail/NCI, BRCAPRO, Claus, BCSC and more; however, Tyrer-Cuzick has been widely accepted as the most comprehensive risk model due to more detailed data collection. Your healthcare provider may use one or more of the models listed above together.

How can I have my risk score calculated?

While risk calculators and other tools exist online, it is best to speak with your healthcare provider about having your risk score calculated. Learning you are high risk from an online calculator without guidance from your healthcare provider may cause unnecessary anxiety.

I am in the high risk category – does this mean I will definitely develop breast cancer?

No, being high risk just means that when statistically compared to other women, your chances are higher, sometimes only slightly higher. It is completely understandable to be concerned about your high risk status, but early detection is your best tool against breast cancer. By identifying your risk, your healthcare providers can provide you with a personalized screening plan and/or risk reduction options.

I am in the high risk category – Is there anything I can do to reduce my risk of being diagnosed with breast cancer?

You should speak with your healthcare provider about your specific circumstances to determine if there is anything you can do to lower your risk. In some cases, your healthcare provider may recommend lifestyle changes, and in higher risk cases, there are risk-reducing drugs and interventional surgery options. It is important, however, that your healthcare provider makes the appropriate recommendations.

I have already been diagnosed with breast cancer. Does the Tyrer-Cuzick risk model apply to me?

No, the Tyrer-Cuzick risk model does not apply to those already diagnosed with breast cancer and those over the age of 85.

Are there additional resources online to learn more about breast cancer risk assessment?

While your healthcare provider and imaging providers are the best resources, here are sites that can provide you with more information until you speak with your healthcare provider:

Where can I find more information about the Myriad MyRisk® Hereditary Cancer Test?

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Report an Issue

Note: Every reported issue that is logged is thoroughly investigated and reviewed by our team. We review reported issues in the order in which they are received. Please do not expect a response from our team related to your reported issue. We will address any and all reported issues that will improve the quality of our online risk calculator.

Report an Issue

Note: Every reported issue that is logged is thoroughly investigated and reviewed by our team. We review reported issues in the order in which they are received. Please do not expect a response from our team related to your reported issue. We will address any and all reported issues that will improve the quality of our online risk calculator.

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