Breast Cancer BRCA1 Carriers: a Pilot Study

  • STATUS
    Recruiting
  • End date
    Dec 31, 2024
  • participants needed
    10
  • sponsor
    Indiana University
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Updated on 15 June 2022
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Summary

The purpose of this study is to examine how a single dose of MIFEPREX® (mifepristone) affects the breast tissue in patients with BRCA1 (a gene that normally acts to restrain the growth of cells in the breast, but if it mutates may lead to breast cancer) mutations undergoing a planned prophylactic mastectomy (having one or both breasts removed).

Description

This is a single arm, prospective, observational trial enrolling up to 10 patients within Indiana University Simon Comprehensive Cancer Center. Eligible women will be consented to undergo breast biopsy 2-6 days prior to prophylactic mastectomy and take one dose of mifepristone 2 days prior to prophylactic mastectomy. If the initial biopsy is obtained on Day -2, the mifepristone should be taken AFTER the biopsy. Tissue from the ipsilateral breast will be taken at the time of mastectomy.

Primary Objective To determine the impact of a single 200 mg dose of mifepristone on gene expression and metabolomic alterations in breast tissue of women with BRCA1 mutations who are planning prophylactic mastectomy.

Details
Condition BRCA1 Mutation, High-grade Serous Ovarian Cancer, TNBC - Triple-Negative Breast Cancer
Treatment Mifepristone 200 MG, Prophylactic mastectomy, Prophylactic mastectomy
Clinical Study IdentifierNCT05062174
SponsorIndiana University
Last Modified on15 June 2022

Eligibility

 Yes No Not Sure

Inclusion Criteria

≥18 old at the time of informed consent
Known pathogenic germline BRCA1 mutation. The mutation must have been discovered by a CLIA- approved next generation sequencing panel (such as Myriad, Invitae, Ambry, etc) and confirmed by the PI
Planning to undergo prophylactic risk reducing mastectomy
Premenopausal, defined as
At least one ovary remains in situ, AND
Estradiol > 20 or last menstrual period within the prior 3 months
Prior hysterectomy is allowed as long as at least one ovary remains in place
Must not be pregnant or nursing
Must have a negative urine pregnancy test for registration and between -6 to day -2 prior to receiving mifepristone
Ability to provide written informed consent and HIPAA authorization
Agrees to pre-treatment core biopsy with donation to the IUSCCC Komen Normal Tissue Bank. Patient will sign a separate informed consent for donation to the IUSCCC Komen Normal Tissue Bank

Exclusion Criteria

Patients may not have used progesterone-only contraceptives (i.e. Depo- Provera) within the last 6 months. Combination estrogen/progesterone or estrogen only contraceptives are allowed
Presence of an intrauterine device
Personal history of breast or ovarian cancer
Active heavy smoker, defined as 10 or more cigarettes per day on any occasion in the past 30 days
Uncontrolled chronic medical condition, including insulin dependent diabetes, NYHA class II, III or IV congestive heart failure, unstable angina, history of myocardial infarction, chronic pulmonary conditions including uncontrolled asthma (symptoms > 2 days/week) or dyspnea requiring oxygen, peripheral vascular disease, symptomatic anemia, uncontrolled psychiatric conditions, chronic kidney disease, or liver disease (cirrhosis, NAFLD, etc.)
Requiring ongoing therapy with strong CYP3A4 inhibitor, steroids, or immunosuppressants (i.e. tacrolimus, cyclosporine, etc.). Please see appendix for full list of excluded co-medications. If questions, please ask the PI
History of life- threatening allergic reaction to local anesthesia (lidocaine, xylocaine)
Contraindications including but not limited to allergic reactions to mifepristone or other prostaglandins, or inherited porphyrias
For the purposes of invasive breast biopsies, women must not be receiving therapeutic anticoagulation or antiplatelet agents
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