Clinical trial Recruiting at 1 site Interventional Ages 66 and up Men only

Male Breast Cancer Predisposition Factor: Create a Control Group

Official title: Male breAsT cAncer preDisposition Factor: Creation of a Control Cohort 2

Run by Institut Claudius Regaud · NCT07558343 · Data updated 2026-11-12

This study tests genetic and psychosocial data in men who are relatives of men with breast cancer but who themselves have no cancer history.

Quick facts

Study typeInterventional
Ages66 Years and up
SexMen only
Enrollment120 (estimated)
SponsorInstitut Claudius Regaud
Academic / other
Locations1 site (Toulouse)
StatusRecruiting
StartedOctober 15, 2026
Main results expectedOctober 15, 2027
Study endsOctober 15, 2027
Registry record updatedOctober 29, 2026
Trial IDNCT07558343 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Male volunteers aged 66 years or older, with no personal cancer history, registered as relatives of a patient with a pathogenic variant in cancer predisposition genes, and having archived blood samples available.

Probably not a fit

Individuals without a known familial pathogenic variant or who do not provide informed consent may receive no direct benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, single-center interventional study enrolling 120 male participants who are relatives of patients with pathogenic breast cancer gene variants. Participants have no personal cancer history and have undergone an oncogenetic consultation; a blood sample will be analyzed and a questionnaire completed. The goal is to collect and describe genetic, environmental, and psychosocial data to understand predisposition factors. Interventions include questionnaire completion and whole exome sequencing. Results may help clarify inherited risk patterns and inform future research in male breast cancer predisposition.

Why it matters

Potential benefit: Participants may contribute to better understanding of inherited risk factors for male breast cancer, potentially informing future screening and counseling.

How similar studies have gone: Previous studies in cancer predisposition have used comparative genetic and psychosocial data from relatives, though this exact design focusing on older male relatives is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 1\. A male volunteer participant with no personal history of cancer, registered in the IUCT-O oncogenetics database as a relative of a patient carrying a pathogenic or likely pathogenic variant in one of the cancer predisposition genes routinely analyzed at the oncogenetics laboratory
* 2\. Age ≥ 66 years
* 3\. Participant with no known family relationship to a patient of the MATADOR1 cohort
* 4\. Participant who has undergone an oncogenetic consultation at the IUCT-O
* 5\. Participant who does not carry the familial mutation in any of the cancer predisposition genes previously tested
* 6\. Participant for which an archived blood sample is available for the research in the oncogenetics laboratory
* 7\. Participant having signed an informed consent form before inclusion in the study and before any study specific procedure

Exclusion Criteria:

* 1\. Patient who has forfeited his/her freedom by administrative or legal award or who is under legal protection (curatorship and guardianship, protection of justice).

Where it's running

  • Institut Universitaire du Cancer Toulouse - Oncopole, Laboratoire d'oncogénétique
    Toulouse, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.