Homologous Recombination Repair Status as a Biomarker of Response in Locally Recurrent/Metastatic Triple Negative Breast Cancer Patients Treated With Concurrent Cisplatin and Radiation Therapy

March 20, 2026 updated by: Memorial Sloan Kettering Cancer Center

A Phase II Trial of Homologous Recombination Repair Status as a Biomarker of Response in Locally Recurrent/Metastatic Triple Negative Breast Cancer Patients Treated With Concurrent Cisplatin and Radiation Therapy

The study is being done to find out if the results of a pre-treatment biopsy can predict response to cisplatin and radiation treatment for patients with metastatic or recurrent triple negative breast cancer.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
49

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

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

  • United States
    • New Jersey
      • Basking Ridge, New Jersey, United States, 07920
        • Memorial Sloan Kettering at Basking Ridge
      • Middletown, New Jersey, United States, 07748
        • Memorial Sloan Kettering Monmouth
      • Montvale, New Jersey, United States, 07645
        • Memorial Sloan Kettering Bergen
    • New York
      • Commack, New York, United States, 11725
        • Memorial Sloan Kettering Cancer Center @ Suffolk
      • Harrison, New York, United States, 10604
        • Memorial Sloan Kettering Westchester
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center
      • Uniondale, New York, United States, 11553
        • Memorial Sloan Kettering Nassau

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Histologically-confirmed invasive triple negative breast cancer (ER <1%, PR <1%, her-2-neu 0-1+ by IHC or FISH-negative) or as determined by MD discretion
  • Radiation to the recurrent or metastatic site is clinically indicated and would be considered standard care for palliation or for locoregional control
  • Age ≥18 years
  • Tumor to be irradiated is measurable by RECIST 1.1 or PRC
  • Willingness to undergo tumor biopsy prior to initiation of treatment
  • Life expectancy greater than 6 months
  • ECOG performance status 0-2
  • Any prior chemotherapy is allowed including prior treatment with platinum-containing chemotherapy
  • Prior treatment with FDA-approved or investigational biologics or novel molecularly target therapies, including oral or IV formulations, are permitted.
  • Patients must be off prior targeted therapy for at least 14 days prior to study biopsy.
  • Use of an effective means of contraception in women of child-bearing potential
  • Ability to comprehend and sign informed consent

  • Adequate organ and marrow function within 14 days prior to study entry, defined as:

    • Absolute neutrophil count (ANC)>1000/mm3
    • Hemoglobin >9 gm/dl
    • Platelets >100,000/mm3
    • Serum creatinine <1.5 mg/dl OR creatinine clearance of ≥ 50 cc/min
    • SGOT/SGPT<2.5X institutional ULN (<5X ULN if known liver metastases)

Exclusion Criteria:

  • Unmeasurable target tumor site by RECIST 1.1 or PRC (ex: lesions <2 cm on CT or MR scan, leptomeningeal disease, ascites, pleural/pericardial effusion, lymphangitis, non-FDG-avid skin lesions)
  • Brain metastases requiring focal or whole brain radiation will be excluded, as these lesions cannot be biopsied and can have life expectancies <6 months.
  • Inability to obtain a biopsy of the tumor as deemed by the study Interventional Radiologist
  • Prior chemotherapy completed <7 days prior to planned study entry

  • Prior RT is allowed and must have been completed more than 7 days before planned study entry.

    • Note: For re-irradiation cases, standard departmental guidelines should be followed so as to not exceed normal tissue
  • Life expectancy less than 6 months
  • Intercurrent illness or other major medical condition or comorbid condition that might affect study participation (uncontrolled renal, pulmonary or hepatic dysfunction or infection)
  • Renal dysfunction for which cisplatin dose would be considered unsafe.
  • Women on study must be neither pregnant nor nursing nor expected to become pregnant during therapy. For premenopausal women, negative pregnancy test within 14 days of RT is required.
  • Concurrent active malignancy other than non-melanomatous skin cancer or carcinoma in-situ of the cervix, unless treatment for the previous cancer was completed >2 years prior to study entry and patient has remained disease-free.

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

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Concurrent Cisplatin & Radiation Therapy
Radiation: external beam radiation therapy
Radiation therapy to the target tumor will be delivered with external beam radiation therapy. In metastatic cases where the intent is palliative, the dose of radiation will be 3750 cGy delivered in 15 daily fractions, 4-5 days a week. In locoregionally recurrent cases where the intent is to enhance locoregional control, the dose of radiation will be 5000 cGy delivered in 25 fractions, 4-5 days a week plus an optional 10-14 Gy boost to areas of gross tumor.
Drug: cisplatin
Cisplatin treatment should be initiated following study registration. The dose of cisplatin is established as 25 mg/m^2 ivpb once a week (+ 3 days) for 1-2 weeks prior to radiation. The length of one cycle of Cisplatin is 21 days.
Procedure: Biopsy of Target Tumor
Biopsy of the tumor to be irradiated will be performed. Fresh tissue specimens will be sent to the laboratory for performance of the MSK-HRR Assay.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Response (RECIST 1.1 vs. PET Response Criteria (PRC) as Measurement Tools for Treatment Response)
Time Frame: 2 years from baseline
RECIST 1.1 as measurement tools for treatment response.
2 years from baseline

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Memorial Sloan Kettering Cancer Center

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Cedars-Sinai Medical Center

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Simon Powell, MD,PhD, Memorial Sloan Kettering Cancer Center

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.

Helpful Links

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 14, 2015

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 19, 2022

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 14, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 14, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 20, 2015

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 21, 2015

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 24, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 20, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 15-032

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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