FRABOC Explained: Risk Categories, Purpose & Alternatives 2026
If you found “FRABOC” on a referral letter, an old GP document, or a cancer information page, you may be wondering what it means and whether you can still use it. The short answer is that FRABOC (also written FRA-BOC) was an Australian online tool that helped health professionals judge breast and ovarian cancer risk from family history. It is no longer available, and newer tools have replaced it.
Quick answer: FRABOC stands for Familial Risk Assessment – Breast and Ovarian Cancer. Cancer Australia created it for GPs, nurses, and other health professionals. It was not a cancer test, a genetic test, or a diagnosis. Cancer Australia has confirmed that the tool is no longer on its website and that more up-to-date tools, such as iPrevent, are now available.
What Is FRABOC?
FRABOC is the common short form of Familial Risk Assessment – Breast and Ovarian Cancer, often written FRA-BOC. It was an online tool published by Cancer Australia, the Australian Government’s national cancer control agency. Cancer Australia describes it as a tool designed for health professionals such as general practitioners (GPs) and nurses to assess a patient’s risk of breast and ovarian cancer based on family history.
The tool looked at the pattern of cancer in a woman’s relatives and placed her in a broad risk group. It did not examine the body and it did not analyse DNA. Its job was to organize family history so that a health professional could decide on the next step, such as a more detailed assessment, genetic counselling, or referral to a family cancer service.
Key entities connected to FRABOC: Cancer Australia, general practitioners, familial cancer clinics, BRCA1 and BRCA2 genes, family history of cancer, and genetic counselling.
What Was FRABOC Used For?
One relative with breast cancer does not automatically mean a high personal risk. What matters is the whole picture: how many relatives were affected, how closely they are related to you, which cancers they had, and how old they were at diagnosis. FRABOC made this picture easier to read.
Health professionals used it to:
- Sort a family history into an average, moderate, or potentially high risk group
- Decide whether a patient needed referral to a family cancer clinic or genetics service
- Explain to patients why their family history did or did not raise concern
- Support conversations about screening and risk reduction
A higher result never meant a person had cancer, and it never meant they would definitely develop it. It indicated that the family history suggested a higher chance than average.
How Did FRABOC Work?
A health professional collected details about the patient’s close relatives on both the mother’s and father’s sides. For each relative, they recorded the type of cancer and the age at diagnosis. The tool then placed the patient into one of three groups:
- At or slightly above average risk
- Moderately increased risk
- Potentially high risk
Because family histories change over time, for example when another relative is diagnosed or when a relative has genetic testing, the information needed to be updated rather than treated as permanent.
What Family History Did FRABOC Consider?
FRABOC looked at first-degree relatives (parents, brothers, sisters, children) and second-degree relatives (grandparents, aunts, uncles, nieces, nephews).
The number of affected relatives was only one factor. Features that could point towards higher risk included:
- Several relatives with breast or ovarian cancer on the same side of the family
- Breast cancer diagnosed at a young age
- Breast and ovarian cancer in the same family or the same person
- Cancer in both breasts (bilateral breast cancer)
- Breast cancer in a male relative
- A known high-risk gene change in the family
Both sides of the family matter. Gene changes linked to cancer can be inherited from the father as well as the mother, so cancer on the father’s side should never be left out.
The Three FRABOC Breast Cancer Risk Categories
The categories below describe how FRABOC worked in the past, using older Cancer Australia guidance. They are given for historical understanding only and must not be used to estimate your own risk today.
| Category | Approximate share of women (old guidance) | Breast cancer risk to age 75 (old guidance) |
|---|---|---|
| At or slightly above average risk | More than 95% | About 1 in 11 to 1 in 8 |
| Moderately increased risk | Fewer than 4% | About 1 in 8 to 1 in 4 |
| Potentially high risk | Fewer than 1% | About 1 in 4 to 1 in 2 |
At or slightly above average risk
This was the lowest and by far the largest group. Examples included women with no confirmed family history of breast cancer, one first-degree relative diagnosed at age 50 or older, or one second-degree relative diagnosed at any age.
Moderately increased risk
One example was a woman with a first-degree relative diagnosed with breast cancer before age 50, when stronger high-risk features were not present. Some families with two close relatives affected could also fall here.
Potentially high risk
This group included families with several affected relatives on the same side, along with features such as breast cancer before age 40, bilateral breast cancer, breast and ovarian cancer in the same woman, male breast cancer, or a known high-risk gene change. Women in this category could be referred for specialist family cancer assessment.
It is worth noting that the potentially high risk group reflects the highest category in Cancer Australia’s guidance, a group that was estimated to make up well under 1% of women.
How FRABOC Looked at Ovarian Cancer
FRABOC also considered ovarian cancer in the family. Doctors looked at how many close relatives had ovarian cancer and how those cases fitted with the rest of the family history. Several cases of ovarian cancer, or ovarian cancer together with early-onset breast cancer, could call for closer assessment. A known high-risk gene change also mattered.
However, a single relative with ovarian cancer did not automatically mean an inherited cancer condition was present. The entire family history needed to be considered.
Older guidance also discussed the limits of ovarian cancer screening with ultrasound and the CA125 blood test. For current screening advice, follow today’s medical guidance rather than old FRABOC material.
FRABOC vs BRCA Genetic Testing
| FRABOC | BRCA genetic testing | |
|---|---|---|
| What it examines | Family history | A person’s DNA |
| Sample needed | None | Usually blood or saliva |
| Detects gene changes | No | Yes |
| Purpose | Estimate risk category and guide next steps | Identify gene changes such as BRCA1 or BRCA2 |
FRABOC could not say whether you carry a change in BRCA1, BRCA2, or another cancer-related gene. It could flag a family pattern that deserved a closer look, and a doctor could then consider genetic counselling or testing.
For context, older Australian research on carriers of BRCA1 or BRCA2 mutations estimated a cumulative lifetime breast cancer risk of roughly 50–60% and an ovarian cancer risk of roughly 20–40%. These are estimates for people confirmed to carry a mutation, not for the general population, and they should not be applied to someone who has only a family history.
What Happened After a Higher-Risk Result?
A higher result did not trigger automatic treatment or testing. It helped the doctor decide what to consider next, such as:
- A more detailed family history review
- Referral to a family cancer clinic or genetics service
- Discussion of genetic counselling and whether genetic testing is appropriate
- Conversations about breast screening and risk-reducing options
The next step depended on each person’s situation.
Was FRABOC a Cancer Test?
No. FRABOC was a risk assessment tool. It was not a blood test, genetic test, mammogram, ultrasound, or scan. It could not find or diagnose breast or ovarian cancer.
Risk tools estimate chances for groups of people. They cannot predict exactly what will happen to one person. Someone with a strong family history may never develop cancer, and someone with no family history can still develop it.
Is FRABOC Still Available?
No. Cancer Australia states that the tool is no longer available on its website and points health professionals to more up-to-date breast cancer risk tools. Queensland’s BreastScreen service also notes that FRA-BOC has been replaced by iPrevent.
Old GP letters, PDFs, referral forms, and websites may still mention FRABOC, which is why people continue to search for it.
What Replaced FRABOC?
Cancer Australia now directs people to iPrevent. Other models in current use include CanRisk (based on the BOADICEA model) and IBIS (also called the Tyrer-Cuzick model).
iPrevent
iPrevent is a validated breast cancer risk assessment and risk management decision support tool, developed by a team at Peter MacCallum Cancer Centre. It is designed to support prevention and screening discussions between women and their doctors. Beyond family history, it can take into account personal health information, reproductive factors, lifestyle, and previous breast disease. Family questions can include breast, ovarian, pancreatic, and prostate cancer.
Queensland Health information says an assessment takes about 30 minutes, and that the result is expressed as a risk category defined by Cancer Australia. Peter MacCallum Cancer Centre advises that iPrevent is not intended for people who have already had invasive breast cancer or ductal carcinoma in situ (DCIS). iPrevent draws on established models including IBIS and BOADICEA through CanRisk.
CanRisk
CanRisk is an online risk tool built on the BOADICEA models. It can give a more detailed, personalized estimate using family history and other information, and it can be useful when a family history is complex or when genetic test results are available.
IBIS (Tyrer-Cuzick)
IBIS estimates breast cancer risk from family history and other personal factors and offers a more detailed estimate than the three broad FRABOC groups. It is one of the models used inside iPrevent.
Current risk categories
Queensland’s BreastScreen service describes current Cancer Australia risk categories in terms of how a woman’s risk compares with the general population:
| Category | Risk compared with the population |
|---|---|
| Average risk | Less than 1.5 times population risk |
| Moderate risk (somewhat increased) | 1.5 to 3 times population risk |
| High risk (substantially increased) | More than 3 times population risk |
This is a more personalized way of describing risk than the old FRABOC groups.
FRABOC vs iPrevent: Comparison Table
| Feature | FRABOC | iPrevent |
|---|---|---|
| Status | No longer available | Current tool |
| Main purpose | Family-based breast and ovarian cancer risk grouping | Breast cancer risk assessment and management |
| Method | Three broad risk groups | Personalized risk estimate using established models |
| Uses family history | Yes | Yes |
| Uses other personal factors | Limited | Yes |
| Primary users | Health professionals | Women and doctors together |
| Typical use today | Historical reference | Current assessment |
Why FRABOC Still Appears in Search Results
FRABOC was referenced in Australian health literature for many years, including guidance for GPs. Archived pages, PDFs, referral templates, and medical records still carry the name. If you see FRABOC in an old document, it almost always refers to the Familial Risk Assessment – Breast and Ovarian Cancer tool and does not mean it is still active.
The Other Meaning of “FRA-BOC”: Frankfurt to Bocas del Toro
In travel, FRA is the airport code for Frankfurt Airport in Germany and BOC is the code for Bocas del Toro Isla Colón International Airport in Panama. Flight search sites may therefore show “FRA-BOC” or “FRA to BOC” for that route. This has no connection to the cancer risk tool.
Should You Use Old FRABOC Figures Today?
No. The old percentages and group definitions help explain history, but they should not be used to work out your current personal risk. Cancer risk assessment has moved on, and newer tools weigh more information. If you are worried about your family history, speak with a GP or a family cancer service rather than placing yourself in an old FRABOC group.
How to Prepare Your Family Cancer History
Gathering information before an appointment makes the assessment more accurate. Try to find out:
- Which relatives had cancer, and how they are related to you
- The type of cancer each person had
- Their age at diagnosis
- Whether anyone had cancer in both breasts or more than one relevant cancer
- Whether a man in the family had breast cancer
- Whether any relatives have had genetic testing, and whether a gene change was found
Check both your mother’s and father’s sides. If a relative has had genetic testing, bring a copy of the result if possible. Do not worry if you cannot find every detail. Share what you know and say which parts are uncertain.
People Also Ask
What does FRABOC stand for?
FRABOC (or FRA-BOC) stands for Familial Risk Assessment – Breast and Ovarian Cancer. It was an Australian tool published by Cancer Australia.
What was FRABOC used for?
It helped health professionals assess breast and ovarian cancer risk from a patient’s family history and decide whether further assessment or referral was needed.
Is FRABOC still available?
No. Cancer Australia has confirmed the tool is no longer on its website. It may still appear in older documents.
Was FRABOC a genetic test?
No. FRABOC reviewed family history. Genetic tests analyse DNA.
Could FRABOC diagnose breast or ovarian cancer?
No. It could not detect or diagnose cancer. It only helped estimate family-related risk.
What replaced FRABOC?
Cancer Australia points to iPrevent. CanRisk and IBIS are other models used for breast cancer risk assessment.
What is the difference between FRABOC and iPrevent?
FRABOC sorted women into three broad risk groups using family history. iPrevent combines family history with other personal factors to give a more personalized estimate and a current risk category.
Does having breast cancer in the family mean I am high risk?
Not necessarily. Risk depends on how many relatives were affected, how closely related they are, the cancer types, ages at diagnosis, and other factors.
Can I use iPrevent myself?
Cancer Australia describes iPrevent as a tool to support discussions between women and their doctors, so it is best used with a health professional who can interpret the result. It is not intended for people who have already had invasive breast cancer or DCIS.
Does breast cancer on the father’s side matter?
Yes. Gene changes linked to breast and ovarian cancer can be passed down through either parent, so both sides of the family should be included.
What is the FRA-BOC flight route?
It is a travel route code for Frankfurt (FRA) to Bocas del Toro, Panama (BOC), and has nothing to do with the cancer risk tool.
Should I see a doctor about my family history of cancer?
If you have concerns, a GP is a good starting point. They can review your family history and, if needed, refer you to a family cancer clinic or genetics service.
Bottom Line
FRABOC was Cancer Australia’s Familial Risk Assessment – Breast and Ovarian Cancer tool, built to help health professionals turn family history into a broad risk group. It was never a cancer test, genetic test, or diagnosis, and it is no longer available. Today, iPrevent, CanRisk, and IBIS provide more detailed, personalized estimates, and a qualified health professional is the right person to interpret them with you.
Medical disclaimer: This article is general information, not medical advice. Historical FRABOC figures are included only to explain how the retired tool worked. Speak with a qualified health professional about your own family history and risk.
Sources consulted: Cancer Australia (FRA-BOC and iPrevent information), Queensland Health BreastScreen Queensland professional guidance, RACGP Australian Family Physician article on family history of breast cancer, and Cancer Australia’s 2015 familial aspects guide.
