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Metastatic Triple-Negative Breast CancerPhase 2ToPCourTNCT06027268

Phase II Trial of Trilaciclib, Pembrolizumab, Gemcitabine and Carboplatin in Metastatic Triple-Negative Breast Cancer

A Phase 2 study testing Trilaciclib, Pembrolizumab and Gemcitabine in people with Metastatic Triple-Negative Breast Cancer, run by Wake Forest University Health Sciences at 1 site in United States.

Active, not recruiting

Under way, not looking for participants. Everyone needed has enrolled. The study is still running.

Official record
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Trial summary

The goal of this phase II study is to test the combination of trilaciclib, pembrolizumab, gemcitabine, and carboplatin in locally advanced unresectable or metastatic triple-negative breast cancer. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Metastatic Triple-Negative Breast Cancer
What is being tested?
Trilaciclib, Pembrolizumab and Gemcitabine
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
36 participants
Where
1 siteUnited States
Study dates
10 Jan 2024to Aug 2027
Phase
Phase 2
Are there results?
Not yet: the study is under way

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
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Written informed consent and HIPAA authorization for release of personal health information signed by the patient
  • Male or female with locally advanced unresectable or metastatic TNBC
  • Age ≥ 18 years at the time of consent
  • Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1 evaluated within 28 days prior to day 1 of study treatment
  • Histological or cytological confirmation of estrogen negative and progesterone negative tumor, defined as < 10% staining on immunohistochemistry (IHC) and human epidermal growth factor receptor type 2 (HER2)-negative, defined as HER 2 IHC 0 or 1+ or IHC 2+ with no amplification. Patients may be enrolled regardless of their PD-L1 (programmed death ligand-1) status.
  • Measurable disease according to response evaluation criteria in solid tumors
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  • Demonstrate adequate organ function
  • Female patients: All females of childbearing potential must have a negative serum β-human chorionic gonadotropin (hCG) test result at Screening and negative serum or urine pregnancy test results within 72 hours prior to day 1 of study treatment.
  • Subject agrees to use contraception
  • As determined by the enrolling physician, the ability of the subject to understand and comply with study procedures for the entire length of the study
  • Tumor tissue: Willing to provide tumor tissue for research purposes
  • Subject has a life expectancy of ≥ 12 weeks

Who cannot join

  • More than 3 prior lines of chemotherapy for locally advanced unresectable or triple-negative metastatic disease
  • Prior therapy with the concurrent combination of gemcitabine and carboplatin in the metastatic setting
  • Active, symptomatic central nervous system (CNS) metastases and/or carcinomatous meningitis or CNS metastases that are progressing on screening magnetic resonance imaging (MRI) brain.
  • Prior systemic anti-cancer therapy within 3 weeks, prior stereotactic radiotherapy within 1 week, and radiation within 2 weeks of day 1 of study treatment. Participants must have recovered from all radiation-related toxicities, not require corticosteroids, and not have had radiation pneumonitis. A 1-week washout is permitted for palliative radiation to non-CNS disease.
  • Major surgery, defined by the investigator's discretion, within 3 weeks of day 1 of study treatment
  • Not recovered from all reversible acute toxic effects of prior therapy, including non-hematologic toxicities related to prior systemic therapy to ≤ Grade 1. Participants with less than Grade 2 neuropathy or alopecia of any grade are an exception
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  • Active infection requiring systemic therapy
  • Pregnant or breastfeeding
  • Participants previously diagnosed with an additional malignancy must be disease-free for at least five years prior to enrollment. Exceptions include basal cell or squamous cell skin cancer and in situ cervical or bladder cancer.
  • Treatment with any investigational drug within 30 days or at least 5 half-lives, whichever is longer, prior to day 1 of study treatment
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, uncontrolled symptomatic congestive heart failure (Class III or IV as defined by the New York Heart Association (NYHA) functional classification system), unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations/substance abuse that would limit compliance with study requirements as determined by the investigator
  • Known history of stroke or cerebrovascular event within 6 months prior to the day 1 of study treatment
  • Known hypersensitivity to carboplatin or other platinum-containing compounds, gemcitabine, mannitol, or pembrolizumab
  • History of non-infectious interstitial lung disease (ILD)/pneumonitis that required steroids or current ILD/ pneumonitis.
  • Has active autoimmune disease that has required systemic treatment in the past 2 years (i.e., with use of disease-modifying agents, corticosteroids, or immunosuppressive drugs) prior to day 1 of study treatment. Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency, etc.) is not considered a form of systemic treatment and is allowed
  • Prior hematopoietic stem cell or bone marrow transplant or allogenic tissue/solid organ transplant
  • Has a known history of Human Immunodeficiency Virus (HIV) or known acquired immunodeficiency syndrome (AIDS)
  • Has known active hepatitis B (e.g., hepatitis B surface antigen [HBsAg] reactive).
  • Has known active hepatitis C (e.g., hepatitis C virus (HCV) ribonucleic acid (RNA) [qualitative] is detected).
  • Receipt of a live, attenuated vaccine within 30 days prior to day 1 of study treatment or anticipation that such a live, attenuated vaccine will be required during the study treatment period. Administration of killed vaccines is allowed. Exception: Monkeypox vaccine may be given if there are at least 3 days between the vaccine and initiation of study treatment.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Levine Cancer Institute

    Charlotte, North Carolina, 28204

Other trials in United States

About this study

Official title: ToPCourT: A Phase II Trial of Trilaciclib, Pembrolizumab, Gemcitabine and Carboplatin in Locally Advanced Unresectable or Metastatic Triple-Negative Breast Cancer (TNBC)

The goal of this phase II study is to test the combination of trilaciclib, pembrolizumab, gemcitabine, and carboplatin in locally advanced unresectable or metastatic triple-negative breast cancer.

The main questions it aims to answer are:

  • to evaluate the anti-cancer efficacy (assess how well it works)
  • to evaluate the safety and tolerability (how well the body can handle the treatment) of this combination of anti-cancer therapy
Read the detailed description

This is an open label, single-arm, phase II trial designed to evaluate the efficacy of trilaciclib, pembrolizumab, gemcitabine and carboplatin in participants with locally advanced unresectable or metastatic triple-negative breast cancer. Pembrolizumab will be given for a maximum of 2 years. Eligible participants will receive the study treatment until disease progression, unacceptable toxicity, or withdrawal for any reason. A tumor biopsy will be collected from participants in which it can be safely obtained before the first dose of treatment, prior to Cycle 3 Day 1, and at the time of disease progression (optional). Blood specimens for correlative studies will be collected pre-treatment Cycle 1 Day 1, prior to treatment Cycle 2 Day 1, prior to treatment Cycle 3 Day 1, 3 months after the start of study treatment, and 6 months after the start of study treatment.

Being tested
Trilaciclib, Pembrolizumab, Gemcitabine, Carboplatin
Keywords
Breast-Female, Breast-Male, Triple-Negative Breast Cancer, Metastatic, Locally advanced unresectable
Medical subject headings
Triple Negative Breast Neoplasms, Neoplasm Metastasis

What participants receive

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

  • TrilaciclibDrug

    Also called COSELA

    IV infusion Day 1 and Day 8 every 21 days, at dose of 240 mg/m2

  • PembrolizumabDrug

    Also called KEYTRUDA

    IV infusion Day 1 every 21 days, at dose of 200 mg

  • GemcitabineDrug

    Also called Gemzar

    IV infusion Day 1 and Day 8 every 21 days, at dose 1000 mg/m2

  • CarboplatinDrug

    IV infusion Day 1 and Day 8 every 21 days, at dose area under curve (AUC) 2 (maximum of 300 mg)

Study groups in NCT06027268
Study groupRoleWhat they receive
Trilaciclib, Pembrolizumab, Gemcitabine, and CarboplatinExperimentalTrilaciclib is an agent that helps protect the bone marrow from the side effects of chemotherapy. It is given as an intravenous (IV) infusion over 30 minutes prior to gemcitabine and carboplatin. Gemcitabine is given IV over 30 minutes. Carboplatin is given over 30 minutes. Trilaciclib, gemcitabine and carboplatin are given on Days 1 and 8 every 21 days. Pembrolizumab is given IV over 30 minutes on Day 1 every 21 days.
Receives: Drug: Trilaciclib; Drug: Pembrolizumab; Drug: Gemcitabine; Drug: Carboplatin

What is being measured

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

  1. Objective Response

    Objective according to RECIST v1.1 criteria

    Measured: 6 months (initiation of protocol directed therapy until either a partial response is achieved or treatment discontinuation)

Secondary outcomes (3)
  1. Progression-free survival

    Time to disease progression per RECIST v1.1 criteria or death

    Measured: 1 year (initiation of protocol directed therapy until documented disease progression, death, or end of follow-up period)

  2. Duration of response

    Duration of response will be calculated only for subjects who achieve an objective response according to RECIST v1.1 criteria (a CR or PR). Disease progression will be objectively determined as per RECIST 1.1 criteria or progression can be subjective as determined by the Investigator.

    Measured: 1 year (time from first disease assessment that shows a PR or complete response (CR) until documented disease progression, death, or end of follow-up period)

  3. Overall survival

    Time to date of death due to any cause while on study

    Measured: 1 year (initiation of protocol directed therapy until documented death, or end of follow-up period])

Timeline

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

  1. First posted7 Sep 2023
  2. Study start10 Jan 2024
  3. Primary completionAug 2027 (estimated)
  4. Study completionAug 2027 (estimated)

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 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
36 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06027268
Sponsor's protocol ID
IRB00095334
Other IDs
LCI-BRE-MTN-TPGC-001
Acronym
ToPCourT
Status last verified
Aug 2026
First submitted
31 Aug 2023
Last updated
20 Aug 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Publications

  • Tan AR, Wright GS, Thummala AR, Danso MA, Popovic L, Pluard TJ, Han HS, Vojnovic Z, Vasev N, Ma L, Richards DA, Wilks ST, Milenkovic D, Yang Z, Antal JM, Morris SR, O'Shaughnessy J. Trilaciclib plus chemotherapy versus chemotherapy alone in patients with metastatic triple-negative breast cancer: a multicentre, randomised, open-label, phase 2 trial. Lancet Oncol. 2019 Nov;20(11):1587-1601. doi: 10.1016/S1470-2045(19)30616-3. Epub 2019 Sep 28.

    PubMed 31575503
  • Tan AR, Wright GS, Thummala AR, Danso MA, Popovic L, Pluard TJ, Han HS, Vojnovic Z, Vasev N, Ma L, Richards DA, Wilks ST, Milenkovic D, Xiao J, Sorrentino J, Horton J, O'Shaughnessy J. Trilaciclib Prior to Chemotherapy in Patients with Metastatic Triple-Negative Breast Cancer: Final Efficacy and Subgroup Analysis from a Randomized Phase II Study. Clin Cancer Res. 2022 Feb 15;28(4):629-636. doi: 10.1158/1078-0432.CCR-21-2272.

    PubMed 34887261
  • Tan AR, O'Shaughnessy J, Cao S, Ahn S, Yi JS. Investigating potential immune mechanisms of trilaciclib administered prior to chemotherapy in patients with metastatic triple-negative breast cancer. Breast Cancer Res Treat. 2023 Sep;201(2):307-316. doi: 10.1007/s10549-023-07009-8. Epub 2023 Jul 7.

    PubMed 37418031
  • Sears-Smith MB, Matusz-Fisher A, Symanowski JT, Tan AR. ToPCourT protocol: a phase II trial of Trilaciclib, Pembrolizumab, gemcitabine, and Carboplatin in locally advanced/unresectable or metastatic Triple-negative breast cancer. Future Oncol. 2026 Apr;22(8):911-917. doi: 10.1080/14796694.2026.2639737. Epub 2026 Mar 11.

    PubMed 41810725

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Trilaciclib, Pembrolizumab and Gemcitabine in people with Metastatic Triple-Negative Breast Cancer, run by Wake Forest University Health Sciences at 1 site 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 12 inclusion and 20 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: under way, not looking for participants, as of the sponsor's last update on 20 Aug 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

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?

Objective Response (time frame: 6 months (initiation of protocol directed therapy until either a partial response is achieved or treatment discontinuation)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06027268, which also lists 4 linked publications.

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 20 Aug 2026.

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