Long-term Safety of Nipple Sparing Mastectomy for Women with High-Risk Breast Cancer Genes

This study is looking at the long-term safety of different types of mastectomy (breast removal surgery) for women who have a high risk of breast cancer due to specific genetic changes (like in BRCA1 or BRCA2 genes). The study compares Nipple Sparing Mastectomy (NSM), where the nipple and areola are kept, with Skin-Sparing Mastectomy (SSM) and Total (Simple) Mastectomy. Researchers want to see how often breast cancer develops after these surgeries over 10 years. You may be able to join if you are a woman aged 18 to 90 with a confirmed genetic change in genes like BRCA1, BRCA2, PALB2, TP53, CDH1, or PTEN, and have not had breast or ovarian cancer or a bilateral mastectomy before genetic testing. The study aims to help doctors understand if NSM is a safe option for these women.

Study design
This is an observational study, meaning researchers will follow a large group of participants (up to 4700 women) over time without assigning them to specific treatments.
What's involved
Not specified in the trial record.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for 10 years to track the incidence of breast cancer after their surgery.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT06888388

Long-term Safety of Nipple Sparing Mastectomy in Women With High Penetrance Breast Cancer Susceptibility Genes in Breast Cancer

Recruiting
Not specifiedAges 18–90Observational
Sir Mortimer B. Davis - Jewish General Hospital
~4,700 participants
Updated 2026-08-18 on ClinicalTrials.gov
What's tested:Nipple Sparing Mastectomy (NSM)Skin-Sparing Mastectomy (SSM)Total (Simple) Mastectomy

At a glance

Recruiting sites
9 of 16 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Incidence of breast cancer following RRM
Measured over 10 years
Breast Cancer Surgery

NCT06888388

Where you'd take part

This study runs at 16 sites. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Asan Medical Centre

    Seoul, South Koreastudy coordinator listed

    Recruiting

  • Belfast Health & Social Care Trust

    Belfast, United Kingdomstudy coordinator listed

    Recruiting

  • Brigham and Women's Hospital - Dana-Farber Brigham Cancer Center

    Boston, Massachusettsstudy coordinator listed

    Not yet recruiting

  • Cancer Institute Hospital of JFCR, Tokyo

    Tokyo, Japanstudy coordinator listed

    Recruiting

  • Champalimaud Foundation, University of Lisbon

    Lisbon, Portugalstudy coordinator listed

    Not yet recruiting

  • CHU de Quebec Université laval

    Québec, Quebec, Canadastudy coordinator listed

    Recruiting

  • Hamilton Health Sciences

    Hamilton, Ontario, Canadastudy coordinator listed

    Recruiting

  • Jewish General Hospital

    Montreal, Quebec, Canadastudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

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Eligibility criteria

Inclusion

Assigned female sex at birth
Age 18 years or older
Confirmed GPV in BRCA1, BRCA2, PALB2, TP53, CDH1 or PTEN identified on pre-symptomatic genetic testing

Exclusion

History of breast cancer prior to genetic testing
History of ovarian cancer prior to genetic testing
History of bilateral mastectomy performed prior to genetic testing
Presence of a variant of uncertain significance (VUS) in the absence of another GPV in BRCA1, BRCA2, PALB2, TP53, CDH1 or PTEN.
  • Incidence of breast cancer following RRM10 years

    The primary outcome of interest is the incidence of breast cancer following RRM, defined as a histologically confirmed diagnosis of in situ or invasive breast cancer present within the nipple/areola, skin, subcutaneous tissue of the chest wall/reconstructed breast, or axillary lymph nodes. Patients with clinically occult invasive breast cancer diagnosed at the time of RRM (ie. on mastectomy pathology) will be excluded from the primary outcome analysis.