AzTrials
AzTrials

Breast Cancer RiskPROTECT-CNCT07498829

Population Based Germline Testing for Early Detection and Prevention of Cancer

A study testing Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk in people with Breast Cancer Risk and Ovarian Cancer Risk, run by Queen Mary University of London at 1 site in United Kingdom.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

PROTECT-C is a research study offering genetic testing to people to see whether they have a genetic change that increases their risk of breast, ovary, bowel, and/or womb cancer. This is regardless of whether they or their families have had cancer. Read more about this study

Who is it for?
Ages 18 years and older, women onlyHealthy volunteers can take part
What is being tested?
Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk
Could I receive a placebo?
No, everyone receives an active treatment
How many people
6,000 participants
Where
1 siteUnited Kingdom
Study dates
18 Dec 2025to Dec 2040
Phase
Interventional
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Women, trans men, and non-binary people with female reproductive organs
  • ≥18 years at consent

Who cannot join

  • Individuals who have previously undergone genetic testing for one or more of the following CSGs: BRCA1, BRCA2, PALB2, RAD51C, RAD51D, BRIP1, MLH1, MSH2, MSH6
  • One or more first- or second-degree relative with a PV in any of above CSGs
  • Inability to provide informed consent

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Ranjit Manchanda, PhD contact

+44 8008620236

r.manchanda@qmul.ac.uk

Caitlin Fierheller, PhD contact

+44 8008620236

protectc.study@qmul.ac.uk

United Kingdom1 site, 1 recruiting
  • Wolfson Institute of Population Health, Queen Mary University of London

    London, EC1M 6BQ

    Ranjit Manchanda, PhD, +44 8008620236, r.manchanda@qmul.ac.uk

    Caitlin Fierheller, PhD, +44 8008620236, protectc.study@qmul.ac.uk

    Recruiting

Other trials in United Kingdom

About this study

PROTECT-C is a research study offering genetic testing to people to see whether they have a genetic change that increases their risk of breast, ovary, bowel, and/or womb cancer. This is regardless of whether they or their families have had cancer.

Breast, ovary, bowel, and womb cancers make up half of all cancers in women. Around 15-20% (15 to 20 in 100 cases) of ovary and 3-4% (3 to 4 in 100 cases) of breast, womb, and bowel cancers are linked to cancer genes and may be prevented. People with a genetic change that puts them at increased risk of any of these cancers have ways to help them manage their risk through the NHS. This may include screening to find cancers earlier when they are easier to treat, and surgery or medication to prevent cancers from developing. This can save lives.

Read more

Currently, genetic testing is only available on the NHS to people who meet certain criteria. For example, those who have had certain cancers, have a strong family history of cancer, or those with Jewish ancestry. But many people may not have a strong family history or meet NHS testing criteria. This means that this system of testing misses 50% to 80% of people (50 to 80 in 100 people) who have a genetic change. It is thought that only around 3 in 100 people overall who have a genetic change that increases their risk of cancer know about it. Given the effective screening and preventive options that are available, this represents a huge, missed opportunity to prevent cancers or find them earlier.

The PROTECT-C study aims to evaluate the option of offering genetic testing to everyone who may want it. This is regardless of whether they or their families have had cancer. We will offer genetic testing to 5000 people. People may take part if they:

  • Are over the age of 18 years and
  • Are a woman, trans man, or non-binary person with female reproductive organs (ovaries, fallopian tubes, and/or a uterus) and
  • Have never had genetic testing for the cancer genes tested for in the study and
  • Do not have first-degree family members (e.g.: parent, sibling, child) or second-degree family members (e.g.: aunt, uncle, niece, nephew, grandchild, grandparent, half-sibling) with genetic changes in the cancer genes tested for in the study

PROTECT-C is a completely digital study. The study team will give participants access to an app developed specifically for this study. They can download this app using a smartphone or tablet or access it on any internet browser using a computer or laptop. Before they can access the app, participants will need to complete a consent form. They will also be asked to fill in a short questionnaire about themselves and their health. The PROTECT-C app contains information to help participants decide if they would like to have genetic testing. If they decide to have genetic testing, they will complete a consent form for genetic testing on the app. The study team will send them a saliva based test kit in the post.

The study will look at how many people decide to have genetic testing and how many of them are found to have a genetic change. It will evaluate their experience with using the app and how this approach to genetic testing affects their quality-of-life, satisfaction, and mental well-being. This will give us a better understanding of how well the app works as a way of offering genetic testing to people. The study is interested to see how people found to be at increased risk decide to manage their risk. We will assess the uptake of screening and prevention options. Few participants will be invited to have 1:1 interviews by the study team. This will evaluate their experience of making a decision about genetic testing and taking part in the study. Taking part in these interviews is optional. The study will also assess if this way of offering genetic testing to people is affordable for the NHS.

Being tested
Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk
Keywords
Population based genetic testing, BRCA, Lynch Syndrome, breast cancer risk, ovarian cancer risk
Medical subject headings
Colorectal Neoplasms, Hereditary Nonpolyposis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer riskGenetic

    Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk for all women (including trans-men, and non-binary individuals with female reproductive organs) over the age of 18 years independent of any family or personal history of cancer.

Study groups in NCT07498829
Study groupRoleWhat they receive
Genetic testingExperimentalGenetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk prediction
Receives: Genetic: Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pathogenic variant (PV) prevalence for multiple moderate to high penetrance CSGs (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) in women from unselected population-based genetic testing compared with FH-based genetic testing

    The primary outcome measure is the proportion of women with one or more CSGs who have undergone genetic testing and received a valid result.

    PV prevalence will be estimated by the number of observed PVs divided by the total number of individuals tested. An overall rate and CSG specific rates will be calculated. Standard NHS criteria at time of the study (i.e. Amsterdam-2 Criteria for Lynch Syndrome and 10% BRCA probability threshold for HBOC) will be used to evaluate family history criteria for genetic testing. The proportion of PVs fulfilling NHS testing criteria (FH positive) will be estimated. 95% Confidence Intervals for these outcomes will be calculated as per methods specified in the SAP (statistical analysis plan).

    Measured: 1 year after completing recruitment

Secondary outcomes (12)
  1. Satisfaction and regret (Satisfaction)

    Satisfaction is measured as the proportion of positive responses to the statement "I am satisfied with the decision I have made"

    Measured: measured at acceptance, 21 days, 6 months and 12 months

  2. Satisfaction and regret (Regret)

    Regret is measured as the proportion who score 10 or less using the Decision Regret Scale questionnaire (scale 5-25 where 5 indicates completely dissatisfied and 25 indicates completely satisfied).

    Measured: measured at acceptance, 21 days, 6 months and 12 months

  3. Quality of life using EQ5D- 5L

    Quality of Life is measured using the EORTC Questionnaire EQ5D- 5L. Mean score (range 0-1) with higher scores indicating higher quality of life.

    Measured: Pre-genetic testing and at 21 days, 6 months and 12 months

  4. Psychosocial wellbeing - Cancer worry

    1. Cancer worry score is measured using the Cancer Worry Scale questionnaire (4-item Cancer Worry Scale questionnaire on a 4-point Likert scale). Mean Cancer Worry Scale score (range 4-16) and self-reported VAS score (range 0-100); with higher score indicates greater concern

    Measured: Pre-genetic testing and at 21 days, 6 months and 12 months

  5. Psychosocial wellbeing - Risk perception

    Risk perception is measured as the proportion responding as at "high or much higher" chance of cancer to the statement "compared with other people of your age, do you think your chances of getting cancer at some point in your life are…"

    Measured: Pre-genetic testing and at 21 days, 6 months and 12 months

  6. Psychosocial wellbeing - Anxiety and depression

    Anxiety is measured using the Hospital Anxiety and Depression Scale (HADS) anxiety questionnaire- Anxiety score (7-item questionnaire on a 4-point Likert scale).

    Depression is measured using the HADS depression questionnaire -(7-item questionnaire on a 4-point Likert scale).

    Scores range from 0-21 with higher scores indicating higher levels of anxiety/depression.

    Measured: Pre-genetic testing and at 21 days, 6 months and 12 months

  7. Psychosocial wellbeing - Distress

    Distress is measured using the Impact of Events (IES) questionnaire (22-item IES questionnaire on a 5-point Likert scale). Mean score IES Intrusive scale (range 0-35) and IES Avoidance scale (range 0-38); where higher scores indicate greater distress.

    Measured: Pre-genetic testing and at 21 days, 6 months and 12 months

  8. Psychosocial wellbeing - Impact

    Impact is measured using the Multidimensional Impact of Cancer (MICRA) questionnaire. Mean score overall (range 0 -105) with separate scores for distress, positive experiences and uncertainty. MICRA distress scale (range 0-30), MICRA positive experiences scale (range 0-20) and MICRA uncertainty scale (range 0-45); where higher scores indicates higher impact.

    Measured: Pre-genetic testing and at 21 days, 6 months and 12 months

  9. Uptake of risk management options

    Uptake of risk management options (for breast, ovarian, endometrial and bowel cancers) are measured using self-reported, clinical and/or registry data

    1. Breast: Proportion of CSG carriers who undergo of self-examination, mammography, MRI, risk reducing mastectomy, medical prevention
    2. Ovary: Proportion of CSG carriers who undergo surveillance, or surgical prevention (risk reducing salpingo-oophorectomy or risk reducing early salpingectomy)
    3. Endometrial: Proportion of CSG carriers who undergo risk reducing hysterectomy (with bilateral salpingo-oophorectomy in women with Lynch Syndrome); endometrial cancer surveillance
    4. Bowel: Proportion of CSG carriers who undergo FIT test, colonoscopy, take aspirin
    5. Proportion of CSG carriers who undergo pre-implantation genetic testing in individuals planning a family

    Measured: collected annually over 8 years

  10. Uptake of cascade testing

    Uptake of cascade testing is measured as the total number of people who undergo cascade testing per family in an individual with a PV in a CSG at 2 years after the return of the last test result

    Measured: 2 years post return of last result in those recruited

  11. VUS carrier frequency

    measured as the proportion of VUS carriers in women who have undergone testing at 6 months after return of the last test result

    Measured: 6 months after return of the last test result

  12. Cost-effectiveness of genetic testing

    Is measured by incremental cost-effectiveness ratio (ICER) comparing population testing strategy with a family history based testing strategy. ICER per QALY is compared to the NICE willingness to pay threshold in the UK (£30,000/QALY). Incremental costs, incremental QALYs and number of cancers/deaths prevented will be calculated and one-way and probabilistic sensitivity analysis undertaken.

    Measured: 12 months after return of last test result - initial analysis

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Mar 2026
  2. Study start18 Dec 2025
  3. Primary completionDec 2029 (estimated)
  4. Study completionDec 2040 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Model description
Interventional cohort study offering genetic testing for moderate to high penetrance Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and a personalised breast and ovarian cancer risk prediction using a digital app and saliva based DNA testing.
Masking
None (open label)
Enrolment
6,000 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07498829
Sponsor's protocol ID
IRAS 328404
Other IDs
REC Reference 24/NW/0294
Acronym
PROTECT-C
Status last verified
Mar 2026
First submitted
29 Dec 2025
Last updated
27 Mar 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided: Patient data may be shared after completion of study and publication of all results, on reasonable request and communication from the Chief Investigator - via email - r.manchanda@qmul.ac.uk

Questions about this trial

What is this clinical trial studying?

A study testing Genetic testing for Cancer Susceptibility Genes (CSGs) (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) and personalised breast and ovarian cancer risk in people with Breast Cancer Risk and Ovarian Cancer Risk, run by Queen Mary University of London at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 27 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Ranjit Manchanda, PhD (+44 8008620236, r.manchanda@qmul.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Pathogenic variant (PV) prevalence for multiple moderate to high penetrance CSGs (BRCA1, BRCA2, RAD51C, RAD51D, BRIP1, PALB2, MLH1, MSH2, MSH6) in women from unselected population-based genetic testing compared with FH-based genetic testing (time frame: 1 year after completing recruitment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Mar 2026.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in