Prostate CancerNCT00261456
The IMPACT Study - Identification of Men With a Genetic Predisposition to ProstAte Cancer
An observational study of Prostate Cancer and BRCA Mutation, run by Institute of Cancer Research, United Kingdom at 1 site in United Kingdom.
Trial summary
The IMPACT study is an international targeted prostate screening study of men at increased prostate cancer risk due to the presence of known pathogenic mutations in BRCA1 and BRCA2 genes and Mis-Match Repair genes (MLH1, MSH6, MSH2). There are only approximately 150 men with a known BRCA1 or BRCA2 mutation in the UK. Read more about this study
- Who is it for?
- Ages 40 to 69 years, men only
- Conditions the study is for
- Prostate Cancer, BRCA Mutation, Mismatch Repair Gene Mutation
- What is being tested?
- PSA test and Prostate Biopsy
- Type of treatment
- Surgery or procedure
- How many people
- 3,500 participants
- Where
- 1 siteUnited Kingdom
- Study dates
- Mar 2005to Mar 2030
- Phase
- Observational
- 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 40 to 69 years
- Men only
- No healthy volunteers
- Adult, Older adult
Study population: Any patient that meets the eligibility criteria and maybe attending a genetics clinic at a number of international centres that have gone through ethical approval.
Who may be able to join
- Male carriers of a known pathogenic BRCA1/2 or Mismatch Repair gene mutations (MSH2, MSH6, MLH1) or men testing negative for a known BRCA1/2/ Mismatch repair mutation (MSH2, MSH6, MLH1) in their family
- Aged between 40-69 years old
- WHO performance status 0-2
- No previous history of prostate cancer
- No previous prostate biopsy for raised PSA
- Absence of any psychological, familial, sociological or geographical situation potentially hampering compliance with the study protocol and follow-up schedule
- Fully informed, written consent according to ICH/EU GCP and national/local regulations before subject registration.
Who cannot join
- Previous cancer with terminal prognosis of less than 5 years
- Previous prostate cancer
Trial locations and contacts
1 site in 1 country.
United Kingdom1 site
Cancer Genetics Unit, Royal Marsden Hospital
Sutton, Surrey, SM2 5PT
About this study
Official title: The IMPACT Study - Identification of Men With a Genetic Predisposition to ProstAte Cancer: Targeted Screening in Men at Higher Genetic Risk and Controls
The IMPACT study is an international targeted prostate screening study of men at increased prostate cancer risk due to the presence of known pathogenic mutations in BRCA1 and BRCA2 genes and Mis-Match Repair genes (MLH1, MSH6, MSH2).
There are only approximately 150 men with a known BRCA1 or BRCA2 mutation in the UK. Research has shown that these men are at an increased risk of developing prostate cancer but more information is needed about the pathogenesis of prostate cancer in this defined group and the role of screening in these men. The study will offer annual PSA screening to these men to determine the incidence of prostate cancer in this group. The study will also look at new markers of early prostate cancer in this cohort.
The power calculations for this study are 850 carriers and 850 controls (age-matched men without BRCA1/2. Mis match repair mutations). It is therefore essential to gain international collaboration to meet the target of recruiting 850 men with these known mutations and a control group of 850 men who have tested negative for a known familial mutation.
Read the detailed description
Prostate cancer is a significant public health problem. In the EU approximately 200,000 men are diagnosed annually with prostate cancer. There are 24,000 cases per year in England and Wales and 10,000 deaths. The incidence is increasing, even when screen-detected cancers are considered, and within the next few years it will become the most common cancer in UK men.
that an alteration in the breast cancer predisposition genes BRCA1 and BRCA2, may predispose to prostate cancer (PC) and this study will increase this evidence-base. There is some evidence, at least in BRCA2 carriers, that the prostate cancer in these men may be more aggressive and so earlier detection could theoretically reduce mortality. It has been reported that unaffected individuals from families with multiple cases of PC show an increased percentage of raised PSA levels, but the use of PSA level and its predictive value in healthy males with BRCA1/2 mutations has not been studied. If PSA were to be used as a screening tool in BRCA1/2 mutation carriers, we would need to gain a better understanding of the pathogenesis of PC in these men and determine whether they have a different baseline PSA profile compared with controls.
The high prevalence of hormone-dependent/secreting tumours such as breast, ovary and prostate in BRCA1/2 carriers suggests an important role of hormones and their receptors in the development of cancer. Androgens and androgen receptors are considered crucial elements in PC pathogenesis. Therefore male sex hormones will be measured to determine the hormone profile in BRCA1/2 carriers compared with a control group. There is strong evidence that BRCA1/2 play an important role in DNA repair and cell cycling. Therefore, we will investigate abnormalities of the metabolic processes in individuals with a BRCA1/2 mutation where cell cycling may be abnormal. Analysis of proteins (proteomics) and metabolites (metabonomics) are powerful approaches to identifying proteins and metabolites involved in cancer formation. The analysis of the proteins and metabolites will enable us to investigate the effect of the presence of a BRCA1/2 mutation and aid in the identification of new biomarkers for prostate cancer.
The target population is a group of 850 males who carry a known pathogenic mutation in the BRCA1/2 genes (500 BRCA1 and 350 BRCA2). These men will be recruited through genetics clinics across the UK and the world. A control group of men who have tested negative for a known pathogenic mutation that is running in their family will also be recruited through the genetics clinics.
All participants will be invited to attend annually for 5 years for an appointment lasting approximately 30 minutes during which they will discuss the study in detail before giving their written consent agreeing to participate. They will have a 50ml blood sample taken and be asked to provide a urine sample every year. They will also be required to complete a short family and medical history questionnaire. These appointments will either take place at the centre they are registered at, at the Royal Marsden Hospital, or in their own home depending on the arrangements made with the collaborating consultant and patient preference.
The PSA level of all participants will be measured locally. If PSA is >3.0ng/ml, a ten core prostatic biopsy will be offered, carried out by a consultant urologist. Ten biopsies will be used for diagnostic purposes, with two extra biopsy samples taken for research analysis with the patients fully informed written consent prior to the procedure being carried out. If any of the ten cores identify the presence of prostate cancer, they will receive treatment for this as advised by their local centre. The PSA will be quality controlled by batch testing at a reference lab. If the value locally was <3.0ng/ml but is >3ng/ml in the reference lab it will be remeasured locally.
If high grade Prostatic Intraepithelial Neoplasia (PIN) is detected or if the sample is inconclusive then a sextant biopsy repeated after 6 weeks will be recommended, in accordance with the ERSPC protocol. If atypical acini are detected then immediate biopsy will be undertaken.
- Conditions
- Prostate Cancer, BRCA Mutation, Mismatch Repair Gene Mutation, Genetic Predisposition to Disease
- Being tested
- PSA test, Prostate Biopsy
- Keywords
- Prostate cancer, BRCA1, BRCA2, prostate screening, PSA, prostate biopsy, Lynch Syndrome, Mismatch Repair Genes, MLH1, MSH2, MSH6
- Medical subject headings
- Prostatic Neoplasms, Genetic Predisposition to Disease, Colorectal Neoplasms, Hereditary Nonpolyposis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PSA testDiagnostic test
Patients tested for their level of Prostate Specific Antigen.
Prostate BiopsyProcedure or surgery
A Prostate biopsy is given as an option to the patient if their PSA level is raised or at the end of 5 years screening.
| Study group | Role | What they receive |
|---|---|---|
| BRCA1/2 carriers | Carriers of a BRCA1 or BRCA2 mutation. Receives: Diagnostic Test: PSA test; Procedure: Prostate Biopsy | |
| BRCA1/2 non Carriers | Do not carry a mutation in either the BRCA1 or 2 genes that has been found in other members of the family. Receives: Diagnostic Test: PSA test; Procedure: Prostate Biopsy | |
| Mismatch Repair gene mutation carriers | Carriers of a MSH2, MSH6 or MLH1 mutation. Receives: Diagnostic Test: PSA test; Procedure: Prostate Biopsy | |
| Mismatch Repair gene mutation non-carriers | Do not carry a mutation in either the MLH1, MSH2 or MSH6 genes that has been found in other members of the family. Receives: Diagnostic Test: PSA test; Procedure: Prostate Biopsy |
What is being measured
The primary outcome is the main question the study is designed to answer.
Primary Endpoint (BRCA)
To determine the yearly incidence of screen-detected prostate cancer in BRCA1 and BRCA2 mutation carriers compared with the control population (predictive test negative for a known familial BRCA1/2 gene mutation). "
Measured: Through study completion, a minimum of 10 years follow up in participants.
Primary Endpoint (Mismatch Repair/Lynch Cohort)
To determine the yearly incidence of screen-detected prostate cancer in mismatch repair gene mutation carriers compared with the control population (predictive test negative for a known familial MMR gene mutation).
Measured: Through study completion, a minimum of 10 years follow up in participants.
Secondary outcomes (4)
PSA threshold for prostate cancer detection
To determine age-specific PSA levels (ug/L) for cancer detection in mutation carriers versus controls from:
- a group of men who are age matched (+/- 5 years) and who have a negative predictive genetic test ii) two population based screening studies
Measured: Through study completion, a minimum of 10 years follow up in participants.
Positive Predictive value of PSA level for prostate cancer detection
To determine the positive predictive value of PSA using a threshold of 3.0ug/L for the development of prostate cancer in mutation carriers using 5 or more years' annual follow up compared with the control populations
Measured: Through study completion, a minimum of 10 years follow up in participants.
Cancer Pathology (BRCA)
To determine the stage and pathology at cancer diagnosis of screen-detected prostate cancer in BRCA1 and BRCA2 mutation carriers compared with the control population (predictive test negative for a known familial BRCA1/2 gene mutation).
Measured: Through study completion, a minimum of 10 years follow up in participants.
Cancer Pathology (Mismatch Repair/Lynch Cohort)
To determine the stage and pathology at cancer diagnosis of screen-detected prostate cancer in mismatch repair gene mutation carriers compared with the control population (predictive test negative for a known familial MMR gene mutation).
Measured: Through study completion, a minimum of 10 years follow up in participants.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Dec 2005 (estimated)
- Study startMar 2005
- Primary completion28 Feb 2030 (estimated)
- Study completionMar 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (15)Papers the sponsor has linked to this study.
- Other trials for Prostate CancerStudies of the same condition, open and under way.
- More trials run by Institute of Cancer Research, United KingdomThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 3,500 participants (actual)
Sponsor and investigators
- Lead sponsor
- Institute of Cancer Research, United Kingdom
- Sponsor type
- University, hospital or other
- Collaborators
- Cancer Research UK, Royal Marsden NHS Foundation Trust, Ronald and Rita McAulay Foundation, BRCA Research and Cure Alliance
- Responsible party
- Sponsor
- Investigators
- Rosalind A Eeles, FRCP FRCR, Principal investigator, Institute of Cancer Research and Royal Marsden Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00261456
- Sponsor's protocol ID
- 05/MRE07/25
- Other IDs
- CCR2598
- Status last verified
- Oct 2026
- First submitted
- 1 Dec 2005
- Last updated
- 30 Oct 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Anonymised data can be applied for via the Data Access Committee
Publications
Tischkowitz M, Eeles R; IMPACT study: Identification of Men with genetic predisposition to Prostate Cancer and its Clinical Treatment collaborators. Mutations in BRCA1 and BRCA2 and predisposition to prostate cancer. Lancet. 2003 Jul 5;362(9377):80; author reply 80. doi: 10.1016/S0140-6736(03)13823-8. No abstract available.
PubMed 12853213Cremers RG, Eeles RA, Bancroft EK, Ringelberg-Borsboom J, Vasen HF, Van Asperen CJ; IMPACT Steering Committee; Schalken JA, Verhaegh GW, Kiemeney LA. The role of the prostate cancer gene 3 urine test in addition to serum prostate-specific antigen level in prostate cancer screening among breast cancer, early-onset gene mutation carriers. Urol Oncol. 2015 May;33(5):202.e19-28. doi: 10.1016/j.urolonc.2015.01.018. Epub 2015 Mar 5.
PubMed 25746941Killick E, Morgan R, Launchbury F, Bancroft E, Page E, Castro E, Kote-Jarai Z, Aprikian A, Blanco I, Clowes V, Domchek S, Douglas F, Eccles D, Evans DG, Harris M, Kirk J, Lam J, Lindeman G, Mitchell G, Pachter N, Selkirk C, Tucker K, Zgajnar J, Eeles R, Pandha H. Role of Engrailed-2 (EN2) as a prostate cancer detection biomarker in genetically high risk men. Sci Rep. 2013;3:2059. doi: 10.1038/srep02059.
PubMed 23792811Whitaker HC, Kote-Jarai Z, Ross-Adams H, Warren AY, Burge J, George A, Bancroft E, Jhavar S, Leongamornlert D, Tymrakiewicz M, Saunders E, Page E, Mitra A, Mitchell G, Lindeman GJ, Evans DG, Blanco I, Mercer C, Rubinstein WS, Clowes V, Douglas F, Hodgson S, Walker L, Donaldson A, Izatt L, Dorkins H, Male A, Tucker K, Stapleton A, Lam J, Kirk J, Lilja H, Easton D; IMPACT Study Steering Committee; IMPACT Study Collaborators; UK GPCS Collaborators; Cooper C, Eeles R, Neal DE. The rs10993994 risk allele for prostate cancer results in clinically relevant changes in microseminoprotein-beta expression in tissue and urine. PLoS One. 2010 Oct 13;5(10):e13363. doi: 10.1371/journal.pone.0013363.
PubMed 20967219Mikropoulos C, Selkirk CGH, Saya S, Bancroft E, Vertosick E, Dadaev T, Brendler C, Page E, Dias A, Evans DG, Rothwell J, Maehle L, Axcrona K, Richardson K, Eccles D, Jensen T, Osther PJ, van Asperen CJ, Vasen H, Kiemeney LA, Ringelberg J, Cybulski C, Wokolorczyk D, Hart R, Glover W, Lam J, Taylor L, Salinas M, Feliubadalo L, Oldenburg R, Cremers R, Verhaegh G, van Zelst-Stams WA, Oosterwijk JC, Cook J, Rosario DJ, Buys SS, Conner T, Domchek S, Powers J, Ausems MG, Teixeira MR, Maia S, Izatt L, Schmutzler R, Rhiem K, Foulkes WD, Boshari T, Davidson R, Ruijs M, Helderman-van den Enden AT, Andrews L, Walker L, Snape K, Henderson A, Jobson I, Lindeman GJ, Liljegren A, Harris M, Adank MA, Kirk J, Taylor A, Susman R, Chen-Shtoyerman R, Pachter N, Spigelman A, Side L, Zgajnar J, Mora J, Brewer C, Gadea N, Brady AF, Gallagher D, van Os T, Donaldson A, Stefansdottir V, Barwell J, James PA, Murphy D, Friedman E, Nicolai N, Greenhalgh L, Obeid E, Murthy V, Copakova L, McGrath J, Teo SH, Strom S, Kast K, Leongamornlert DA, Chamberlain A, Pope J, Newlin AC, Aaronson N, Ardern-Jones A, Bangma C, Castro E, Dearnaley D, Eyfjord J, Falconer A, Foster CS, Gronberg H, Hamdy FC, Johannsson O, Khoo V, Lubinski J, Grindedal EM, McKinley J, Shackleton K, Mitra AV, Moynihan C, Rennert G, Suri M, Tricker K; IMPACT study collaborators; Moss S, Kote-Jarai Z, Vickers A, Lilja H, Helfand BT, Eeles RA. Prostate-specific antigen velocity in a prospective prostate cancer screening study of men with genetic predisposition. Br J Cancer. 2018 Jan;118(2):266-276. doi: 10.1038/bjc.2017.429. Epub 2018 Jan 4.
PubMed 29301143Moynihan C, Bancroft EK, Mitra A, Ardern-Jones A, Castro E, Page EC, Eeles RA. Ambiguity in a masculine world: Being a BRCA1/2 mutation carrier and a man with prostate cancer. Psychooncology. 2017 Nov;26(11):1987-1993. doi: 10.1002/pon.4530. Epub 2017 Sep 18.
PubMed 28812325Mitra AV, Bancroft EK, Barbachano Y, Page EC, Foster CS, Jameson C, Mitchell G, Lindeman GJ, Stapleton A, Suthers G, Evans DG, Cruger D, Blanco I, Mercer C, Kirk J, Maehle L, Hodgson S, Walker L, Izatt L, Douglas F, Tucker K, Dorkins H, Clowes V, Male A, Donaldson A, Brewer C, Doherty R, Bulman B, Osther PJ, Salinas M, Eccles D, Axcrona K, Jobson I, Newcombe B, Cybulski C, Rubinstein WS, Buys S, Townshend S, Friedman E, Domchek S, Ramon Y Cajal T, Spigelman A, Teo SH, Nicolai N, Aaronson N, Ardern-Jones A, Bangma C, Dearnaley D, Eyfjord J, Falconer A, Gronberg H, Hamdy F, Johannsson O, Khoo V, Kote-Jarai Z, Lilja H, Lubinski J, Melia J, Moynihan C, Peock S, Rennert G, Schroder F, Sibley P, Suri M, Wilson P, Bignon YJ, Strom S, Tischkowitz M, Liljegren A, Ilencikova D, Abele A, Kyriacou K, van Asperen C, Kiemeney L; IMPACT Study Collaborators; Easton DF, Eeles RA. Targeted prostate cancer screening in men with mutations in BRCA1 and BRCA2 detects aggressive prostate cancer: preliminary analysis of the results of the IMPACT study. BJU Int. 2011 Jan;107(1):28-39. doi: 10.1111/j.1464-410X.2010.09648.x. Epub 2010 Sep 14.
PubMed 20840664Bancroft EK, Page EC, Castro E, Lilja H, Vickers A, Sjoberg D, Assel M, Foster CS, Mitchell G, Drew K, Maehle L, Axcrona K, Evans DG, Bulman B, Eccles D, McBride D, van Asperen C, Vasen H, Kiemeney LA, Ringelberg J, Cybulski C, Wokolorczyk D, Selkirk C, Hulick PJ, Bojesen A, Skytte AB, Lam J, Taylor L, Oldenburg R, Cremers R, Verhaegh G, van Zelst-Stams WA, Oosterwijk JC, Blanco I, Salinas M, Cook J, Rosario DJ, Buys S, Conner T, Ausems MG, Ong KR, Hoffman J, Domchek S, Powers J, Teixeira MR, Maia S, Foulkes WD, Taherian N, Ruijs M, Helderman-van den Enden AT, Izatt L, Davidson R, Adank MA, Walker L, Schmutzler R, Tucker K, Kirk J, Hodgson S, Harris M, Douglas F, Lindeman GJ, Zgajnar J, Tischkowitz M, Clowes VE, Susman R, Ramon y Cajal T, Patcher N, Gadea N, Spigelman A, van Os T, Liljegren A, Side L, Brewer C, Brady AF, Donaldson A, Stefansdottir V, Friedman E, Chen-Shtoyerman R, Amor DJ, Copakova L, Barwell J, Giri VN, Murthy V, Nicolai N, Teo SH, Greenhalgh L, Strom S, Henderson A, McGrath J, Gallagher D, Aaronson N, Ardern-Jones A, Bangma C, Dearnaley D, Costello P, Eyfjord J, Rothwell J, Falconer A, Gronberg H, Hamdy FC, Johannsson O, Khoo V, Kote-Jarai Z, Lubinski J, Axcrona U, Melia J, McKinley J, Mitra AV, Moynihan C, Rennert G, Suri M, Wilson P, Killick E; IMPACT Collaborators; Moss S, Eeles RA. Targeted prostate cancer screening in BRCA1 and BRCA2 mutation carriers: results from the initial screening round of the IMPACT study. Eur Urol. 2014 Sep;66(3):489-99. doi: 10.1016/j.eururo.2014.01.003. Epub 2014 Jan 15.
PubMed 24484606Page EC, Bancroft EK, Brook MN, Assel M, Hassan Al Battat M, Thomas S, Taylor N, Chamberlain A, Pope J, Raghallaigh HN, Evans DG, Rothwell J, Maehle L, Grindedal EM, James P, Mascarenhas L, McKinley J, Side L, Thomas T, van Asperen C, Vasen H, Kiemeney LA, Ringelberg J, Jensen TD, Osther PJS, Helfand BT, Genova E, Oldenburg RA, Cybulski C, Wokolorczyk D, Ong KR, Huber C, Lam J, Taylor L, Salinas M, Feliubadalo L, Oosterwijk JC, van Zelst-Stams W, Cook J, Rosario DJ, Domchek S, Powers J, Buys S, O'Toole K, Ausems MGEM, Schmutzler RK, Rhiem K, Izatt L, Tripathi V, Teixeira MR, Cardoso M, Foulkes WD, Aprikian A, van Randeraad H, Davidson R, Longmuir M, Ruijs MWG, Helderman van den Enden ATJM, Adank M, Williams R, Andrews L, Murphy DG, Halliday D, Walker L, Liljegren A, Carlsson S, Azzabi A, Jobson I, Morton C, Shackleton K, Snape K, Hanson H, Harris M, Tischkowitz M, Taylor A, Kirk J, Susman R, Chen-Shtoyerman R, Spigelman A, Pachter N, Ahmed M, Ramon Y Cajal T, Zgajnar J, Brewer C, Gadea N, Brady AF, van Os T, Gallagher D, Johannsson O, Donaldson A, Barwell J, Nicolai N, Friedman E, Obeid E, Greenhalgh L, Murthy V, Copakova L, Saya S, McGrath J, Cooke P, Ronlund K, Richardson K, Henderson A, Teo SH, Arun B, Kast K, Dias A, Aaronson NK, Ardern-Jones A, Bangma CH, Castro E, Dearnaley D, Eccles DM, Tricker K, Eyfjord J, Falconer A, Foster C, Gronberg H, Hamdy FC, Stefansdottir V, Khoo V, Lindeman GJ, Lubinski J, Axcrona K, Mikropoulos C, Mitra A, Moynihan C, Rennert G, Suri M, Wilson P, Dudderidge T; IMPACT Study Collaborators; Offman J, Kote-Jarai Z, Vickers A, Lilja H, Eeles RA. Interim Results from the IMPACT Study: Evidence for Prostate-specific Antigen Screening in BRCA2 Mutation Carriers. Eur Urol. 2019 Dec;76(6):831-842. doi: 10.1016/j.eururo.2019.08.019. Epub 2019 Sep 16.
PubMed 31537406Dias A, Brook MN, Bancroft EK, Page EC, Chamberlain A, Saya S, Amin J, Mikropoulos C, Taylor N, Myhill K, Thomas S, Saunders E, Dadaev T, Leongamornlert D, Dyrso Jensen T, Evans DG, Cybulski C, Liljegren A, Teo SH, Side L; IMPACT study collaborators and Steering Committee; Kote-Jarai Z, Eeles RA. Serum testosterone and prostate cancer in men with germline BRCA1/2 pathogenic variants. BJUI Compass. 2023 Jan 9;4(3):361-373. doi: 10.1002/bco2.156. eCollection 2023 May.
PubMed 37025481Bancroft EK, Page EC, Brook MN, Thomas S, Taylor N, Pope J, McHugh J, Jones AB, Karlsson Q, Merson S, Ong KR, Hoffman J, Huber C, Maehle L, Grindedal EM, Stormorken A, Evans DG, Rothwell J, Lalloo F, Brady AF, Bartlett M, Snape K, Hanson H, James P, McKinley J, Mascarenhas L, Syngal S, Ukaegbu C, Side L, Thomas T, Barwell J, Teixeira MR, Izatt L, Suri M, Macrae FA, Poplawski N, Chen-Shtoyerman R, Ahmed M, Musgrave H, Nicolai N, Greenhalgh L, Brewer C, Pachter N, Spigelman AD, Azzabi A, Helfand BT, Halliday D, Buys S, Ramon Y Cajal T, Donaldson A, Cooney KA, Harris M, McGrath J, Davidson R, Taylor A, Cooke P, Myhill K, Hogben M, Aaronson NK, Ardern-Jones A, Bangma CH, Castro E, Dearnaley D, Dias A, Dudderidge T, Eccles DM, Green K, Eyfjord J, Falconer A, Foster CS, Gronberg H, Hamdy FC, Johannsson O, Khoo V, Lilja H, Lindeman GJ, Lubinski J, Axcrona K, Mikropoulos C, Mitra AV, Moynihan C, Ni Raghallaigh H, Rennert G, Collier R; IMPACT Study Collaborators; Offman J, Kote-Jarai Z, Eeles RA. A prospective prostate cancer screening programme for men with pathogenic variants in mismatch repair genes (IMPACT): initial results from an international prospective study. Lancet Oncol. 2021 Nov;22(11):1618-1631. doi: 10.1016/S1470-2045(21)00522-2. Epub 2021 Oct 19.
PubMed 34678156Bancroft EK, Saya S, Page EC, Myhill K, Thomas S, Pope J, Chamberlain A, Hart R, Glover W, Cook J, Rosario DJ, Helfand BT, Hutten Selkirk C, Davidson R, Longmuir M, Eccles DM, Gadea N, Brewer C, Barwell J, Salinas M, Greenhalgh L, Tischkowitz M, Henderson A, Evans DG, Buys SS; IMPACT Study Steering Committee; IMPACT Collaborators; Eeles RA, Aaronson NK. Psychosocial impact of undergoing prostate cancer screening for men with BRCA1 or BRCA2 mutations. BJU Int. 2019 Feb;123(2):284-292. doi: 10.1111/bju.14412. Epub 2018 Jun 22.
PubMed 29802810Bancroft EK, Page EC, Brook MN, Pope J, Thomas S, Myhill K, Helfand BT, Talaty P, Ong KR, Douglas E, Cook J, Rosario DJ, Salinas M, Buys SS, Anson J, Davidson R, Longmuir M, Side L, Eccles DM, Tischkowitz M, Taylor A, Cruellas M, Ballestero EP, Cleaver R, Varughese M, Barwell J, LeButt M, Greenhalgh L, Hart R, Azzabi A, Jobson I, Cogley L, Evans DG, Rothwell J, Taylor N, Hogben M, Saya S; IMPACT Study Steering Committee; IMPACT Collaborators; Eeles RA, Aaronson NK. The psychosocial impact of prostate cancer screening for BRCA1 and BRCA2 carriers. BJU Int. 2024 Sep;134(3):484-500. doi: 10.1111/bju.16432. Epub 2024 Jun 5.
PubMed 38839570Bancroft EK, Page EC, McHugh J, Thomas S, Taylor N, Pope J, Evans DG, Rothwell J, Grindedal EM, Maehle L, James P, McKinley J, Mascarenhas L, Side L, Thomas T, van Leerdam ME, van Asperen CJ, Kiemeney LALM, Ringelberg J, Vlaming M, Ronlund K, Osther PJS, Helfand BT, Hutten CG, Oldenburg RA, Cybulski C, Wokolorczyk D, Ong KR, Huber C, Salinas M, Feliubadalo L, Oosterwijk JC, van Zelst-Stams WAG, Cook J, Rosario DJ, Maxwell K, Powers J, Buys S, Lyman J, Ausems MGEM, Schmutzler RK, Rhiem K, Izatt L, Tripathi V, Teixeira MR, Cardoso M, Foulkes WD, Aprikian A, Davidson R, Longmuir M, Ruijs MWG, Blom EW, van Engelen K, Williams R, Andrews L, Murphy DG, Saya S, Halliday D, Walker L, Liljegren A, Carlsson S, Azzabi A, Jobson I, Snape K, Gowie M, Harris M, Tischkowitz M, Taylor A, Kirk J, Susman R, Chen-Shtoyerman R, Spigelman A, Pachter N, Ahmed M, Cajal TRY, Krajc M, Cleaver R, Cruellas M, Perez-Ballestero E, Brady AF, Gallagher D, Donaldson A, Barwell J, Nicolai N, Friedman E, Hall MJ, Greenhalgh L, Murthy V, Copakova L, McGrath JS, Cooke P, Arun B, Myhill K, Hogben M, Hussain S, Aaronson NK, Ardern-Jones A, Bangma CH, Castro E, Dearnaley D, Eccles DM, Tricker K, Falconer A, Gronberg H, Hamdy FC, Khoo V, Lilja H, Lindeman GJ, Lubinski J, Axcrona K, Mikropoulos C, Mitra A, Offman J, Rennert G, Suri M, Dudderidge T; IMPACT Study Collaborators; Brook MN, Kote-Jarai Z, Eeles RA. Targeted Prostate Cancer Screening in Carriers of BRCA1 or BRCA2 Pathogenic Germline Variants Detects Clinically Relevant Disease: 5-year Results from the IMPACT Study. Eur Urol. 2026 May;89(5):457-468. doi: 10.1016/j.eururo.2026.01.031. Epub 2026 Feb 18.
PubMed 41714267Das S, Salami SS, Spratt DE, Kaffenberger SD, Jacobs MF, Morgan TM. Bringing Prostate Cancer Germline Genetics into Clinical Practice. J Urol. 2019 Aug;202(2):223-230. doi: 10.1097/JU.0000000000000137. Epub 2019 Jul 8.
PubMed 30730411
Study at a glance
From the registry record, last updated by the sponsor on 30 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The IMPACT Study - Identification of Men With a Genetic Predisposition to ProstAte Cancer: Targeted Screening in Men at Higher Genetic Risk and Controls
- ClinicalTrials.gov ID
- NCT00261456
- Acronym / sponsor ID
- 05/MRE07/25
- Conditions
- Prostate Cancer, BRCA Mutation, Mismatch Repair Gene Mutation, Genetic Predisposition to Disease
- Keywords
- Prostate cancer, BRCA1, BRCA2, prostate screening, PSA, prostate biopsy, Lynch Syndrome, Mismatch Repair Genes
- Study type
- Observational
- Recruitment status
- Active, not recruiting
- Enrolment
- 3,500 participants (actual)
- Lead sponsor
- Institute of Cancer Research, United KingdomUniversity, hospital or other
- Collaborators
- Cancer Research UK, Royal Marsden NHS Foundation Trust, Ronald and Rita McAulay Foundation, BRCA Research and Cure Alliance
- Study start
- Mar 2005
- Primary completion
- 28 Feb 2030 (estimated)
- Study completion
- Mar 2030 (estimated)
- First posted
- 5 Dec 2005 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The IMPACT study is an international targeted prostate screening study of men at increased prostate cancer risk due to the presence of known pathogenic mutations in BRCA1 and BRCA2 genes and Mis-Match Repair genes (MLH1, MSH6, MSH2).
There are only approximately 150 men with a known BRCA1 or BRCA2 mutation in the UK. Research has shown that these men are at an increased risk of developing prostate cancer but more information is needed about the pathogenesis of prostate cancer in this defined group and the role of screening in these men. The study will offer annual PSA screening to these men to determine the incidence of prostate cancer in this group. The study will also look at new markers of early prostate cancer in this cohort.
The power calculations for this study are 850 carriers and 850 controls (age-matched men without BRCA1/2. Mis match repair mutations). It is therefore essential to gain international collaboration to meet the target of recruiting 850 men with these known mutations and a control group of 850 men who have tested negative for a known familial mutation.
Detailed description
Prostate cancer is a significant public health problem. In the EU approximately 200,000 men are diagnosed annually with prostate cancer. There are 24,000 cases per year in England and Wales and 10,000 deaths. The incidence is increasing, even when screen-detected cancers are considered, and within the next few years it will become the most common cancer in UK men.
that an alteration in the breast cancer predisposition genes BRCA1 and BRCA2, may predispose to prostate cancer (PC) and this study will increase this evidence-base. There is some evidence, at least in BRCA2 carriers, that the prostate cancer in these men may be more aggressive and so earlier detection could theoretically reduce mortality. It has been reported that unaffected individuals from families with multiple cases of PC show an increased percentage of raised PSA levels, but the use of PSA level and its predictive value in healthy males with BRCA1/2 mutations has not been studied. If PSA were to be used as a screening tool in BRCA1/2 mutation carriers, we would need to gain a better understanding of the pathogenesis of PC in these men and determine whether they have a different baseline PSA profile compared with controls.
The high prevalence of hormone-dependent/secreting tumours such as breast, ovary and prostate in BRCA1/2 carriers suggests an important role of hormones and their receptors in the development of cancer. Androgens and androgen receptors are considered crucial elements in PC pathogenesis. Therefore male sex hormones will be measured to determine the hormone profile in BRCA1/2 carriers compared with a control group. There is strong evidence that BRCA1/2 play an important role in DNA repair and cell cycling. Therefore, we will investigate abnormalities of the metabolic processes in individuals with a BRCA1/2 mutation where cell cycling may be abnormal. Analysis of proteins (proteomics) and metabolites (metabonomics) are powerful approaches to identifying proteins and metabolites involved in cancer formation. The analysis of the proteins and metabolites will enable us to investigate the effect of the presence of a BRCA1/2 mutation and aid in the identification of new biomarkers for prostate cancer.
The target population is a group of 850 males who carry a known pathogenic mutation in the BRCA1/2 genes (500 BRCA1 and 350 BRCA2). These men will be recruited through genetics clinics across the UK and the world. A control group of men who have tested negative for a known pathogenic mutation that is running in their family will also be recruited through the genetics clinics.
All participants will be invited to attend annually for 5 years for an appointment lasting approximately 30 minutes during which they will discuss the study in detail before giving their written consent agreeing to participate. They will have a 50ml blood sample taken and be asked to provide a urine sample every year. They will also be required to complete a short family and medical history questionnaire. These appointments will either take place at the centre they are registered at, at the Royal Marsden Hospital, or in their own home depending on the arrangements made with the collaborating consultant and patient preference.
The PSA level of all participants will be measured locally. If PSA is >3.0ng/ml, a ten core prostatic biopsy will be offered, carried out by a consultant urologist. Ten biopsies will be used for diagnostic purposes, with two extra biopsy samples taken for research analysis with the patients fully informed written consent prior to the procedure being carried out. If any of the ten cores identify the presence of prostate cancer, they will receive treatment for this as advised by their local centre. The PSA will be quality controlled by batch testing at a reference lab. If the value locally was <3.0ng/ml but is >3ng/ml in the reference lab it will be remeasured locally.
If high grade Prostatic Intraepithelial Neoplasia (PIN) is detected or if the sample is inconclusive then a sextant biopsy repeated after 6 weeks will be recommended, in accordance with the ERSPC protocol. If atypical acini are detected then immediate biopsy will be undertaken.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| BRCA1/2 carriers | – | Diagnostic Test: PSA test, Procedure: Prostate BiopsyCarriers of a BRCA1 or BRCA2 mutation. |
| BRCA1/2 non Carriers | – | Diagnostic Test: PSA test, Procedure: Prostate BiopsyDo not carry a mutation in either the BRCA1 or 2 genes that has been found in other members of the family. |
| Mismatch Repair gene mutation carriers | – | Diagnostic Test: PSA test, Procedure: Prostate BiopsyCarriers of a MSH2, MSH6 or MLH1 mutation. |
| Mismatch Repair gene mutation non-carriers | – | Diagnostic Test: PSA test, Procedure: Prostate BiopsyDo not carry a mutation in either the MLH1, MSH2 or MSH6 genes that has been found in other members of the family. |
Who may qualify
- Ages
- 40 to 69 years
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Any patient that meets the eligibility criteria and maybe attending a genetics clinic at a number of international centres that have gone through ethical approval.
Key inclusion criteria (7 listed)
- Male carriers of a known pathogenic BRCA1/2 or Mismatch Repair gene mutations (MSH2, MSH6, MLH1) or men testing negative for a known BRCA1/2/ Mismatch repair mutation (MSH2, MSH6, MLH1) in their family
- Aged between 40-69 years old
- WHO performance status 0-2
- No previous history of prostate cancer
- No previous prostate biopsy for raised PSA
Key exclusion criteria (2 listed)
- Previous cancer with terminal prognosis of less than 5 years
- Previous prostate cancer
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PSA testPatients tested for their level of Prostate Specific Antigen. | Diagnostic test | BRCA1/2 carriers, BRCA1/2 non Carriers, Mismatch Repair gene mutation carriers, Mismatch Repair gene mutation non-carriers |
| Prostate BiopsyA Prostate biopsy is given as an option to the patient if their PSA level is raised or at the end of 5 years screening. | Procedure or surgery | BRCA1/2 carriers, BRCA1/2 non Carriers, Mismatch Repair gene mutation carriers, Mismatch Repair gene mutation non-carriers |
Primary outcome
Primary Endpoint (BRCA)
Time frame: Through study completion, a minimum of 10 years follow up in participants.
To determine the yearly incidence of screen-detected prostate cancer in BRCA1 and BRCA2 mutation carriers compared with the control population (predictive test negative for a known familial BRCA1/2 gene mutation). "
Primary Endpoint (Mismatch Repair/Lynch Cohort)
Time frame: Through study completion, a minimum of 10 years follow up in participants.
To determine the yearly incidence of screen-detected prostate cancer in mismatch repair gene mutation carriers compared with the control population (predictive test negative for a known familial MMR gene mutation).
4 secondary outcomes
PSA threshold for prostate cancer detection
Time frame: Through study completion, a minimum of 10 years follow up in participants.
Positive Predictive value of PSA level for prostate cancer detection
Time frame: Through study completion, a minimum of 10 years follow up in participants.
Cancer Pathology (BRCA)
Time frame: Through study completion, a minimum of 10 years follow up in participants.
Cancer Pathology (Mismatch Repair/Lynch Cohort)
Time frame: Through study completion, a minimum of 10 years follow up in participants.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Oct 2026.
- Background: PubMed 12853213Tischkowitz M, Eeles R; IMPACT study: Identification of Men with genetic predisposition to Prostate Cancer and its Clinical Treatment collaborators. Mutations in BRCA1 and BRCA2 and predisposition to prostate cancer. Lancet. 2003 Jul 5;362(9377):80; author reply 80. doi: 10.1016/S0140-6736(03)13823-8. No abstract available.
- Background: PubMed 25746941Cremers RG, Eeles RA, Bancroft EK, Ringelberg-Borsboom J, Vasen HF, Van Asperen CJ; IMPACT Steering Committee; Schalken JA, Verhaegh GW, Kiemeney LA. The role of the prostate cancer gene 3 urine test in addition to serum prostate-specific antigen level in prostate cancer screening among breast cancer, early-onset gene mutation carriers. Urol Oncol. 2015 May;33(5):202.e19-28. doi: 10.1016/j.urolonc.2015.01.018. Epub 2015 Mar 5.
- Background: PubMed 23792811Killick E, Morgan R, Launchbury F, Bancroft E, Page E, Castro E, Kote-Jarai Z, Aprikian A, Blanco I, Clowes V, Domchek S, Douglas F, Eccles D, Evans DG, Harris M, Kirk J, Lam J, Lindeman G, Mitchell G, Pachter N, Selkirk C, Tucker K, Zgajnar J, Eeles R, Pandha H. Role of Engrailed-2 (EN2) as a prostate cancer detection biomarker in genetically high risk men. Sci Rep. 2013;3:2059. doi: 10.1038/srep02059.
- Background: PubMed 20967219Whitaker HC, Kote-Jarai Z, Ross-Adams H, Warren AY, Burge J, George A, Bancroft E, Jhavar S, Leongamornlert D, Tymrakiewicz M, Saunders E, Page E, Mitra A, Mitchell G, Lindeman GJ, Evans DG, Blanco I, Mercer C, Rubinstein WS, Clowes V, Douglas F, Hodgson S, Walker L, Donaldson A, Izatt L, Dorkins H, Male A, Tucker K, Stapleton A, Lam J, Kirk J, Lilja H, Easton D; IMPACT Study Steering Committee; IMPACT Study Collaborators; UK GPCS Collaborators; Cooper C, Eeles R, Neal DE. The rs10993994 risk allele for prostate cancer results in clinically relevant changes in microseminoprotein-beta expression in tissue and urine. PLoS One. 2010 Oct 13;5(10):e13363. doi: 10.1371/journal.pone.0013363.
- Background: PubMed 29301143Mikropoulos C, Selkirk CGH, Saya S, Bancroft E, Vertosick E, Dadaev T, Brendler C, Page E, Dias A, Evans DG, Rothwell J, Maehle L, Axcrona K, Richardson K, Eccles D, Jensen T, Osther PJ, van Asperen CJ, Vasen H, Kiemeney LA, Ringelberg J, Cybulski C, Wokolorczyk D, Hart R, Glover W, Lam J, Taylor L, Salinas M, Feliubadalo L, Oldenburg R, Cremers R, Verhaegh G, van Zelst-Stams WA, Oosterwijk JC, Cook J, Rosario DJ, Buys SS, Conner T, Domchek S, Powers J, Ausems MG, Teixeira MR, Maia S, Izatt L, Schmutzler R, Rhiem K, Foulkes WD, Boshari T, Davidson R, Ruijs M, Helderman-van den Enden AT, Andrews L, Walker L, Snape K, Henderson A, Jobson I, Lindeman GJ, Liljegren A, Harris M, Adank MA, Kirk J, Taylor A, Susman R, Chen-Shtoyerman R, Pachter N, Spigelman A, Side L, Zgajnar J, Mora J, Brewer C, Gadea N, Brady AF, Gallagher D, van Os T, Donaldson A, Stefansdottir V, Barwell J, James PA, Murphy D, Friedman E, Nicolai N, Greenhalgh L, Obeid E, Murthy V, Copakova L, McGrath J, Teo SH, Strom S, Kast K, Leongamornlert DA, Chamberlain A, Pope J, Newlin AC, Aaronson N, Ardern-Jones A, Bangma C, Castro E, Dearnaley D, Eyfjord J, Falconer A, Foster CS, Gronberg H, Hamdy FC, Johannsson O, Khoo V, Lubinski J, Grindedal EM, McKinley J, Shackleton K, Mitra AV, Moynihan C, Rennert G, Suri M, Tricker K; IMPACT study collaborators; Moss S, Kote-Jarai Z, Vickers A, Lilja H, Helfand BT, Eeles RA. Prostate-specific antigen velocity in a prospective prostate cancer screening study of men with genetic predisposition. Br J Cancer. 2018 Jan;118(2):266-276. doi: 10.1038/bjc.2017.429. Epub 2018 Jan 4.
- Background: PubMed 28812325Moynihan C, Bancroft EK, Mitra A, Ardern-Jones A, Castro E, Page EC, Eeles RA. Ambiguity in a masculine world: Being a BRCA1/2 mutation carrier and a man with prostate cancer. Psychooncology. 2017 Nov;26(11):1987-1993. doi: 10.1002/pon.4530. Epub 2017 Sep 18.
- Results publication: PubMed 20840664Mitra AV, Bancroft EK, Barbachano Y, Page EC, Foster CS, Jameson C, Mitchell G, Lindeman GJ, Stapleton A, Suthers G, Evans DG, Cruger D, Blanco I, Mercer C, Kirk J, Maehle L, Hodgson S, Walker L, Izatt L, Douglas F, Tucker K, Dorkins H, Clowes V, Male A, Donaldson A, Brewer C, Doherty R, Bulman B, Osther PJ, Salinas M, Eccles D, Axcrona K, Jobson I, Newcombe B, Cybulski C, Rubinstein WS, Buys S, Townshend S, Friedman E, Domchek S, Ramon Y Cajal T, Spigelman A, Teo SH, Nicolai N, Aaronson N, Ardern-Jones A, Bangma C, Dearnaley D, Eyfjord J, Falconer A, Gronberg H, Hamdy F, Johannsson O, Khoo V, Kote-Jarai Z, Lilja H, Lubinski J, Melia J, Moynihan C, Peock S, Rennert G, Schroder F, Sibley P, Suri M, Wilson P, Bignon YJ, Strom S, Tischkowitz M, Liljegren A, Ilencikova D, Abele A, Kyriacou K, van Asperen C, Kiemeney L; IMPACT Study Collaborators; Easton DF, Eeles RA. Targeted prostate cancer screening in men with mutations in BRCA1 and BRCA2 detects aggressive prostate cancer: preliminary analysis of the results of the IMPACT study. BJU Int. 2011 Jan;107(1):28-39. doi: 10.1111/j.1464-410X.2010.09648.x. Epub 2010 Sep 14.
- Results publication: PubMed 24484606Bancroft EK, Page EC, Castro E, Lilja H, Vickers A, Sjoberg D, Assel M, Foster CS, Mitchell G, Drew K, Maehle L, Axcrona K, Evans DG, Bulman B, Eccles D, McBride D, van Asperen C, Vasen H, Kiemeney LA, Ringelberg J, Cybulski C, Wokolorczyk D, Selkirk C, Hulick PJ, Bojesen A, Skytte AB, Lam J, Taylor L, Oldenburg R, Cremers R, Verhaegh G, van Zelst-Stams WA, Oosterwijk JC, Blanco I, Salinas M, Cook J, Rosario DJ, Buys S, Conner T, Ausems MG, Ong KR, Hoffman J, Domchek S, Powers J, Teixeira MR, Maia S, Foulkes WD, Taherian N, Ruijs M, Helderman-van den Enden AT, Izatt L, Davidson R, Adank MA, Walker L, Schmutzler R, Tucker K, Kirk J, Hodgson S, Harris M, Douglas F, Lindeman GJ, Zgajnar J, Tischkowitz M, Clowes VE, Susman R, Ramon y Cajal T, Patcher N, Gadea N, Spigelman A, van Os T, Liljegren A, Side L, Brewer C, Brady AF, Donaldson A, Stefansdottir V, Friedman E, Chen-Shtoyerman R, Amor DJ, Copakova L, Barwell J, Giri VN, Murthy V, Nicolai N, Teo SH, Greenhalgh L, Strom S, Henderson A, McGrath J, Gallagher D, Aaronson N, Ardern-Jones A, Bangma C, Dearnaley D, Costello P, Eyfjord J, Rothwell J, Falconer A, Gronberg H, Hamdy FC, Johannsson O, Khoo V, Kote-Jarai Z, Lubinski J, Axcrona U, Melia J, McKinley J, Mitra AV, Moynihan C, Rennert G, Suri M, Wilson P, Killick E; IMPACT Collaborators; Moss S, Eeles RA. Targeted prostate cancer screening in BRCA1 and BRCA2 mutation carriers: results from the initial screening round of the IMPACT study. Eur Urol. 2014 Sep;66(3):489-99. doi: 10.1016/j.eururo.2014.01.003. Epub 2014 Jan 15.
- Results publication: PubMed 31537406Page EC, Bancroft EK, Brook MN, Assel M, Hassan Al Battat M, Thomas S, Taylor N, Chamberlain A, Pope J, Raghallaigh HN, Evans DG, Rothwell J, Maehle L, Grindedal EM, James P, Mascarenhas L, McKinley J, Side L, Thomas T, van Asperen C, Vasen H, Kiemeney LA, Ringelberg J, Jensen TD, Osther PJS, Helfand BT, Genova E, Oldenburg RA, Cybulski C, Wokolorczyk D, Ong KR, Huber C, Lam J, Taylor L, Salinas M, Feliubadalo L, Oosterwijk JC, van Zelst-Stams W, Cook J, Rosario DJ, Domchek S, Powers J, Buys S, O'Toole K, Ausems MGEM, Schmutzler RK, Rhiem K, Izatt L, Tripathi V, Teixeira MR, Cardoso M, Foulkes WD, Aprikian A, van Randeraad H, Davidson R, Longmuir M, Ruijs MWG, Helderman van den Enden ATJM, Adank M, Williams R, Andrews L, Murphy DG, Halliday D, Walker L, Liljegren A, Carlsson S, Azzabi A, Jobson I, Morton C, Shackleton K, Snape K, Hanson H, Harris M, Tischkowitz M, Taylor A, Kirk J, Susman R, Chen-Shtoyerman R, Spigelman A, Pachter N, Ahmed M, Ramon Y Cajal T, Zgajnar J, Brewer C, Gadea N, Brady AF, van Os T, Gallagher D, Johannsson O, Donaldson A, Barwell J, Nicolai N, Friedman E, Obeid E, Greenhalgh L, Murthy V, Copakova L, Saya S, McGrath J, Cooke P, Ronlund K, Richardson K, Henderson A, Teo SH, Arun B, Kast K, Dias A, Aaronson NK, Ardern-Jones A, Bangma CH, Castro E, Dearnaley D, Eccles DM, Tricker K, Eyfjord J, Falconer A, Foster C, Gronberg H, Hamdy FC, Stefansdottir V, Khoo V, Lindeman GJ, Lubinski J, Axcrona K, Mikropoulos C, Mitra A, Moynihan C, Rennert G, Suri M, Wilson P, Dudderidge T; IMPACT Study Collaborators; Offman J, Kote-Jarai Z, Vickers A, Lilja H, Eeles RA. Interim Results from the IMPACT Study: Evidence for Prostate-specific Antigen Screening in BRCA2 Mutation Carriers. Eur Urol. 2019 Dec;76(6):831-842. doi: 10.1016/j.eururo.2019.08.019. Epub 2019 Sep 16.
- Results publication: PubMed 37025481Dias A, Brook MN, Bancroft EK, Page EC, Chamberlain A, Saya S, Amin J, Mikropoulos C, Taylor N, Myhill K, Thomas S, Saunders E, Dadaev T, Leongamornlert D, Dyrso Jensen T, Evans DG, Cybulski C, Liljegren A, Teo SH, Side L; IMPACT study collaborators and Steering Committee; Kote-Jarai Z, Eeles RA. Serum testosterone and prostate cancer in men with germline BRCA1/2 pathogenic variants. BJUI Compass. 2023 Jan 9;4(3):361-373. doi: 10.1002/bco2.156. eCollection 2023 May.
- Results publication: PubMed 34678156Bancroft EK, Page EC, Brook MN, Thomas S, Taylor N, Pope J, McHugh J, Jones AB, Karlsson Q, Merson S, Ong KR, Hoffman J, Huber C, Maehle L, Grindedal EM, Stormorken A, Evans DG, Rothwell J, Lalloo F, Brady AF, Bartlett M, Snape K, Hanson H, James P, McKinley J, Mascarenhas L, Syngal S, Ukaegbu C, Side L, Thomas T, Barwell J, Teixeira MR, Izatt L, Suri M, Macrae FA, Poplawski N, Chen-Shtoyerman R, Ahmed M, Musgrave H, Nicolai N, Greenhalgh L, Brewer C, Pachter N, Spigelman AD, Azzabi A, Helfand BT, Halliday D, Buys S, Ramon Y Cajal T, Donaldson A, Cooney KA, Harris M, McGrath J, Davidson R, Taylor A, Cooke P, Myhill K, Hogben M, Aaronson NK, Ardern-Jones A, Bangma CH, Castro E, Dearnaley D, Dias A, Dudderidge T, Eccles DM, Green K, Eyfjord J, Falconer A, Foster CS, Gronberg H, Hamdy FC, Johannsson O, Khoo V, Lilja H, Lindeman GJ, Lubinski J, Axcrona K, Mikropoulos C, Mitra AV, Moynihan C, Ni Raghallaigh H, Rennert G, Collier R; IMPACT Study Collaborators; Offman J, Kote-Jarai Z, Eeles RA. A prospective prostate cancer screening programme for men with pathogenic variants in mismatch repair genes (IMPACT): initial results from an international prospective study. Lancet Oncol. 2021 Nov;22(11):1618-1631. doi: 10.1016/S1470-2045(21)00522-2. Epub 2021 Oct 19.
- Results publication: PubMed 29802810Bancroft EK, Saya S, Page EC, Myhill K, Thomas S, Pope J, Chamberlain A, Hart R, Glover W, Cook J, Rosario DJ, Helfand BT, Hutten Selkirk C, Davidson R, Longmuir M, Eccles DM, Gadea N, Brewer C, Barwell J, Salinas M, Greenhalgh L, Tischkowitz M, Henderson A, Evans DG, Buys SS; IMPACT Study Steering Committee; IMPACT Collaborators; Eeles RA, Aaronson NK. Psychosocial impact of undergoing prostate cancer screening for men with BRCA1 or BRCA2 mutations. BJU Int. 2019 Feb;123(2):284-292. doi: 10.1111/bju.14412. Epub 2018 Jun 22.
- The IMPACT study websiteLink provided by the sponsor.
- UK information point for eligible menLink provided by the sponsor.
- Individual participant dataSharing planned: Yes. Anonymised data can be applied for via the Data Access Committee
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Rosalind A Eeles, FRCP FRCR principal investigator
Institute of Cancer Research and Royal Marsden Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Prostate Cancer and BRCA Mutation, run by Institute of Cancer Research, United Kingdom 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 7 inclusion and 2 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: under way, not looking for participants, as of the sponsor's last update on 30 Oct 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?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Primary Endpoint (BRCA) (time frame: Through study completion, a minimum of 10 years follow up in participants.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00261456, which also lists 15 linked publications.
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 30 Oct 2026.