Breast Cancer Risk After Diagnostic Gene Sequencing (BRIDGEScohort2)

November 19, 2025 updated by: Institut Curie

Clinical Application of the European Horizon 2020 Research Project "BRIDGES" - Study of the Psychological Impact of Breast Cancer Risk Communication in Cancer Genetics Based on the Personalized Estimation of the BOADICEA V5/PLUS Model

Study of the psychological impact of breast cancer risk communication in Cancer Genetics based on the personalized estimation of the BOADICEA V5/PLUS model ("Breast and Ovarian Analysis of Disease Incidence and Carrier Estimation Algorithm-version 5 or PLUS").

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The new BC gene testing and risk estimation using BOADICEA V5/PLUS model imply an increased complexity of communication during the cancer genetic consultation. It will be proposed to women referred to genetic counselling in the participating Cancer Genetic Clinics .

New qualitative (moderate risks, secondary results) and quantitative results (variation in the degree of cancer risk identified for the counselee and family members) and thus a personalized breast cancer risk may be obtained. How this complexity affects counselees' psychological reactions is not known.

It is primarily aimed at comparing psychosocial needs and distress in healthy women (unaffected with BC) at high risk of breast or ovarian cancer undergoing genetic testing based on an enriched gene panel (index case gene panel plus PRS) at Curie Institute in France and at the University Hospital in Cologne, Germany.

Study Type

Interventional

Enrollment (Actual)

405

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Paris, France, 75005
        • Institut Curie
  • Germany
      • Cologne, Germany, 50923
        • University Hospital of Cologne

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Healthy woman, relative of a family member first tested (index case) who received a positive genetic test result (presence of a BRCA1 or BRCA2 deleterious variant or a moderate-penetrance BC gene deleterious variant) ;

    a. at Cologne University Hospital (Germany), these healthy women may also be relatives of women (index case) who received a negative non-informative test result;

  2. Who accept BRIDGES gene panel testing and the breast cancer risk PRS;
  3. Aged 18 years or over with no upper limit;
  4. Able to give informed written consent in accordance with national/local regulations and procedures;
  5. Able to understand the questionnaire language of the participating genetic clinic.

Exclusion Criteria:

  1. Woman affected with BC, with recurrent BC, with metastatic BC, with an ovarian cancer (OC) or cancer of any other site;
  2. Aged under 18 years old;
  3. Unable to give informed written consent;
  4. Unable to understand the questionnaire language of the participating clinic;
  5. Unable to answer the questionnaire due to physical or cognitive disturbance

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: genetic counselling
Genetic counselling (PRS for risk estimation) and questionnaires in the participating Cancer Genetic Clinics for healthy woman relative of a person first tested in the family (index case) who received a positive genetic test result or a negative non-informative test result
Genetic: BRIDGES gene panel testing
The "Breast and Ovarian Analysis of Disease Incidence and Carrier Estimation Algorithm-BOADICEAV5/PLUS" predicts lifetime and age-specific breast cancer (BC) risks on the basis of family history, all known BC genes test-results, common single nucleotide polymorphisms (SNPs) combined in a PRS, and other non-genetic risk factors. This model is developed within the BRIDGES consortium.
Genetic: Breast cancer risk polygenic risk score (PRS)
The "Breast and Ovarian Analysis of Disease Incidence and Carrier Estimation Algorithm-BOADICEAV5/PLUS" predicts lifetime and age-specific breast cancer (BC) risks on the basis of family history, all known BC genes test-results, common single nucleotide polymorphisms (SNPs) combined in a PRS, and other non-genetic risk factors. This model is developed within the BRIDGES consortium.
Behavioral: Questionnaires
Self-administered questionnaires for counselees to evaluate Psychosocial Aspects of Hereditary Cancer (PAHC), Breast Cancer risk perception adequacy, risk communication within the family and cancer risk management choice,

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Psychosocial Assessment in Hereditary Cancer questionnaire (PAHC).
Time Frame: Up to 6 months
Breast or ovarian cancer risk perception (the impact of communicating a personalized breast cancer risk using the BOADICEAV5/PLUS model) using a PAHC questionnaire. Questionnaire items are responded on a 4-level scale from 1 (Not at all) to 4 (Very much). Item response scores are averaged and standardized on a 0 to 100 scale, with an increased value indication more severe difficulties.
Up to 6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Difference on the PAHC score between counselees who receive a pathogenic variant indicating breast cancer versus (VS) who did not receive such result
Time Frame: Up to 6 months
Counselee's perceived lifetime risks of developing (a first or second) BC will be measured at T2 in words (Not concerned, Don't know, Low risk, Low to moderate risk, Moderate risk, High risk, Very high risk, Major Risk) and in figures (Not concerned, Don't know, 0-10%; between 11-20%, 21-40%, 41-60%, 61-80% and over 80%).
Up to 6 months
Percentage of counselees intending to undertake risk reducing mastectomy (the one who received a pathogenic variant VS who did not receive such result)
Time Frame: Up to 6 months
Counselees' choice of cancer risk management will be assessed using a study-specific self-administered questionnaire based on the literature [Julian-Reynier, 2010] asking about women's intention or choice to undergo regular mammography, regular breast ultrasound, MRI or preventive mastectomy on a 6-option response scale (Yes, certainly; Yes, probably; I don't know; No, probably not; No, certainly not; Not concerned).
Up to 6 months
Percentage of counselees who communicate their result to their sister(s) (the one who received a pathogenic variant VS who did not receive such result)
Time Frame: Up to 6 months
It will be assessed using a study-specific self-administered questionnaire based on the literature [de Geus, 2015] asking about women's whether they informed about genetic testing among her husband/partner, children, mother, father, sister(s), brother(s), friend(s) or other family member(s) using a 4, 5 or 5-option response scale depending on the person (Yes, I informed him/her/them; No, but I plan to do it; No (no partner); No; Yes all of them; Yes, some of them; No (children too young); No (no children/brother/sister); No (mother/father deceased).
Up to 6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Institut Curie

Investigators

  • Study Chair: Pierre FUMOLEAU, MD, Institut Curie

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

October 22, 2019

Primary Completion (Actual)

August 27, 2021

Study Completion (Actual)

March 3, 2022

Study Registration Dates

First Submitted

July 18, 2019

First Submitted That Met QC Criteria

October 29, 2019

First Posted (Actual)

October 31, 2019

Study Record Updates

Last Update Posted (Actual)

November 24, 2025

Last Update Submitted That Met QC Criteria

November 19, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IC 2018-08

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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