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Breast CancerPhase 1NCT03542175

A Study of Rucaparib Administered With Radiation in Patients With Triple Negative Breast Cancer With an Incomplete Response Following Chemotherapy

A Phase 1 study testing Rucaparib and Radiotherapy in people with Breast Cancer, run by Memorial Sloan Kettering Cancer Center at 8 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to test the safety of a study drug called Rucaparib, administered in combination with the type of radiation therapy that is usually given to women with your form of breast cancer. Read more about this study

Who is it for?
Ages 18 years and older, women only
Conditions the study is for
Breast Cancer
What is being tested?
Rucaparib and Radiotherapy
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
31 participants
Where
8 sitesUnited States
Study dates
23 May 2018to 10 Sep 2025
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • Women only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Female, ≥ 18 years of age.
  • Non-metastatic, histologically or cytologically-confirmed TNBC (defined as ER <1%, PR <1%, her-2-neu 0-1+ by IHC or FISH-negative or as per MD discretion), with evidence of residual disease in the breast or lymph nodes after neoadjuvant chemotherapy, at the time of definitive surgical treatment.
  • Non-metastatic, histologically or cytologically-confirmed hormone-receptor positive, Her2/neu negative breast cancer (defined as ER >1% or PR >1% AND Her-2/neu 0-1+ by IHC or FISH-negative, or as per MD discretion), with evidence of residual grade 3 invasive breast cancer AND either 1) >5 cm of residual disease in the breast OR 2) ≥ 4 axillary LNs in the axilla after neoadjuvant chemotherapy, at the time of definitive surgical treatment.
  • Definitive surgical treatment with breast-conserving surgery or mastectomy and axillary lymph node evaluation.
  • At least 6-month life expectancy, ECOG Performance status < 2.
  • Willingness to discontinue any cytotoxic chemotherapeutic agents, and biologic therapy at least 2 weeks prior to the start of RT.
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  • Adequate organ function (assessed within 30 days prior to initiation of protocol treatment, unless otherwise indicated) as follows:
  • Hematology
  • Absolute Neutrophil Count (ANC) ≥1500/mm^3
  • Platelet Count ≥100,000/mm^3
  • Hemoglobin ≥9.0 g/dL (after transfusion if required) Renal Function
  • Creatinine Serum ≤ 1.5 mg/dL or Creatinine Clearance ≥ 45 mL/min^a Hepatic Function
  • Bilirubin ≤ 1.5 mg/dL
  • Aspartate Aminotransferase (AST) ≤ 2.5 x ULN^b
  • Alanine Aminotransferase (ALT) ≤ 2.5 x ULN ULN = upper normal limit of institution's normal range
  • If calculated creatinine clearance is < 45mL/min, a 24-hour urine collection for creatinine clearance may be performed
  • Subjects with documented Gilbert's disease may have bilirubin up to 2.5 mg/dL
  • Negative serum pregnancy test within 14 days prior to study treatment if a woman has child-bearing potential. Subjects of child bearing potential are those who have not been surgically sterilized or have not been free from menses for > 1 year.
  • Ability to swallow and retain oral medications.
  • Written informed consent obtained from subject and ability for subject to comply with the requirements of the study.
  • Female subjects of childbearing potential should be willing to use 2 methods of birth control or be surgically sterile, or abstain from heterosexual activity for the duration of study participation. Should a woman become pregnant while participating on study, she should inform the treating physician immediately.

Who cannot join

  • Gross residual tumor on imaging or positive margins after breast conserving surgery that are un-excised, as radiation dose in the study will be limited to 60 Gy.
  • Complete pathologic response to NAC.
  • Receipt of PARP inhibitor prior to RT.
  • Pregnant or expecting to conceive within the projected duration of the trial, starting with screening visit through 180 days after the last dose of trial treatment.
  • Prior history of radiation therapy to the ipsilateral breast and/or regional nodes is not allowed (prior RT to other sites is permitted).
  • Patients with breast augmentation implants are excluded.
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  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to rucaparib.
  • Concomitant anti-neoplastic treatment is not allowed during protocol treatment and should be completed at least 2 weeks prior to commencement of protocol treatment, with resolution of associated acute toxicities. Bisphosphonates are permitted without restriction even during protocol treatment. Maintenance pembrolizumab is permitted during the protocol treatment.
  • Significant comorbidity: Patients with clinically significant and uncontrolled major disease or disorder that could exacerbate potential toxicities, confound safety assessments, require excluded therapy for management, or limit study compliance.
  • Ongoing therapy with other investigational agents. Patients may not be receiving any other investigational agents.
  • Unresolved toxicity from other agents. Patients with unresolved CTCAE v4.03 Grade 3 or greater toxicity from prior administration of another investigational drug and/or anti-cancer treatment are not eligible.

Trial locations and contacts

8 sites in 1 country.

8 sites in 1 country

United States8 sites
  • Memorial Sloan Kettering at Basking Ridge

    Basking Ridge, New Jersey, 07920

  • Memorial Sloan Kettering Commack

    Commack, New York, 11725

  • Memorial Sloan Kettering Westchester

    Harrison, New York, 10604

  • Memorial Sloan Kettering Monmouth

    Middletown, New Jersey, 07748

  • Memorial Sloan Kettering Bergen

    Montvale, New Jersey, 07645

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065

  • Norwalk Hospital

    Norwalk, Connecticut, 06850

  • Memorial Sloan Kettering Nassau

    Uniondale, New York, 11553

Other trials in United States

About this study

Official title: A Phase I Study of Rucaparib Administered Concurrently With Postoperative Radiotherapy in Patients With Triple Negative Breast Cancer With an Incomplete Pathologic Response Following Neoadjuvant Chemotherapy

The purpose of this study is to test the safety of a study drug called Rucaparib, administered in combination with the type of radiation therapy that is usually given to women with your form of breast cancer.

Conditions
Breast Cancer
Being tested
Rucaparib, Radiotherapy
Keywords
Rucaparib, Radiotherapy, Triple Negative Breast Cancer, 18-002
Medical subject headings
Breast Neoplasms, Triple Negative Breast Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • RucaparibDrug

    one dose level (200 mg BID, 200 mg QD, 300 mg BID, 300 mg QD or 400 mg BID) concurrently with a 6-week course of radiotherapy and 4 additional weeks of maintenance rucaparib at the same dose level.

  • RadiotherapyRadiation

    50 Gy in 2 Gy per fraction to the breast or chest wall with or without regional nodes plus a 10 Gy boost to the lumpectomy cavity, to a total dose of 60 Gy. A 10 Gy boost to the post-mastectomy scar is allowed at the discretion of the treating physician.

Study groups in NCT03542175
Study groupRoleWhat they receive
Rucaparib Administered With RadiationExperimentalone dose level (200 mg BID, 200 mg QD, 300 mg BID, 300 mg QD or 400 mg BID) concurrently with a 6-week course of radiotherapy and 4 additional weeks of maintenance rucaparib at the same dose level. Radiotherapy will consist of 50 Gy in 2 Gy per fraction to the breast or chest wall with or without regional nodes plus a 10 Gy boost to the lumpectomy cavity, to a total dose of 60 Gy. A 10 Gy boost to the post-mastectomy scar is allowed at the discretion of the treating physician.
Receives: Drug: Rucaparib; Radiation: Radiotherapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Dose Limiting Toxicities

    Number of Dose Limiting Toxicities encountered at each dose level. The trial will be monitored using TITE-CRM. Assuming a model for the time to occurrence of toxic response as a function of dose, the method allows information from all enrolled patients to be used when allocating a new patient to a dose level.

    Measured: 1 year

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted31 May 2018
  2. Study start23 May 2018
  3. Primary completion25 Jul 2024
  4. Study completion10 Sep 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
This is a single-arm Phase I study.
Masking
None (open label)
Enrolment
31 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03542175
Sponsor's protocol ID
18-002
Other IDs
P50CA247749
Status last verified
Sep 2025
First submitted
18 May 2018
Last updated
8 Dec 2025
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Rucaparib and Radiotherapy in people with Breast Cancer, run by Memorial Sloan Kettering Cancer Center at 8 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 21 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 8 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 8 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 8 Dec 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Dose Limiting Toxicities (time frame: 1 year). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 8 Dec 2025.

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