NCT05539365

Brief Summary

This phase II trial tests the safety, side effects, and whether dendritic cell-based treatment and pembrolizumab work in treating patients with triple negative breast cancer that has spread to other places in the body (metastatic) or cannot be removed by surgery (unresectable). The term triple-negative breast cancer refers to the fact that the cancer cells don't have estrogen or progesterone receptors (ER or PR) and also don't make any or too much of the protein called HER2 (the cells test "negative" on all 3 tests). Dendritic cell-based treatment works by boosting the immune system (a system in our bodies that protects us against infection) to recognize and destroy the cancer cells. Pembrolizumab, is an immune checkpoint inhibitor drug, that works by targeting molecules that act as a check and balance system for immune responses. Immune checkpoint inhibitor drugs are designed to either "unleash" or "enhance" the cancer immune responses that already exist by either blocking inhibitory molecules or by activating stimulatory molecules. Giving dendritic cell-based therapy and pembrolizumab may decrease symptoms and improve quality of life in patients with triple negative breast cancer.

Trial Health

50
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Timeline
9mo left

Started Feb 2025

Geographic Reach
1 country

1 active site

Status
withdrawn

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress60%
Feb 2025Feb 2027

First Submitted

Initial submission to the registry

September 9, 2022

Completed
5 days until next milestone

First Posted

Study publicly available on registry

September 14, 2022

Completed
2.4 years until next milestone

Study Start

First participant enrolled

February 1, 2025

Completed
2 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

February 1, 2027

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2027

Last Updated

January 29, 2025

Status Verified

January 1, 2025

Enrollment Period

2 years

First QC Date

September 9, 2022

Last Update Submit

January 27, 2025

Conditions

Outcome Measures

Primary Outcomes (2)

  • Objective responses rate (ORR)

    Will be assessed by immune related response criteria (iRECIST).

    Up to 2 years

  • Incidence of adverse events

    Will be assessed using the Cancer Therapy Evaluation Program (CTEP) National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0, and will be summarized by attribution and grade using frequencies and relative frequencies.

    Up to 30 days after last dose

Secondary Outcomes (3)

  • Progression-free survival (PFS)

    Up to 2 years

  • Overall survival (OS)

    Up to 2 years

  • Objective response rate

    Up to 2 years

Other Outcomes (2)

  • Health-related quality of life (HR-QOL)

    Up to day 85

  • Quality of Life as measured by the Perceived Stress Scale

    Up to day 85

Study Arms (1)

Treatment (ST-alpha-DC1, pembrolizumab)

EXPERIMENTAL

Patients undergo leukapheresis over 90 minutes. Patients then receive ST-alpha-DC1 IT on days 1, 8, and 50 in the absence of disease progression or unacceptable toxicity. Patients also receive pembrolizumab IV on days 8, 29, 50, and 71 in the absence of disease progression or unacceptable toxicity. Patients who are receiving clinical benefit from treatment at the end of day 85, may continue to receive pembrolizumab IV every 3 weeks beyond the 4 study doses. Patients also undergo tumor biopsies on days 1, 8, and 50 and CT scans at baseline and days 50 and 85.

Biological: Alpha-type-1 Polarized Dendritic CellsProcedure: BiopsyProcedure: Computed TomographyProcedure: LeukapheresisBiological: PembrolizumabOther: Quality-of-Life Assessment

Interventions

Given IT

Also known as: alphaDC1
Treatment (ST-alpha-DC1, pembrolizumab)
BiopsyPROCEDURE

Undergo biopsy

Also known as: BIOPSY_TYPE, Bx
Treatment (ST-alpha-DC1, pembrolizumab)

Undergo CT scan

Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized Tomography, CT, CT Scan, tomography
Treatment (ST-alpha-DC1, pembrolizumab)
LeukapheresisPROCEDURE

Undergo leukapheresis

Also known as: Leukocytopheresis, Therapeutic Leukopheresis
Treatment (ST-alpha-DC1, pembrolizumab)
PembrolizumabBIOLOGICAL

Given IV

Also known as: Keytruda, Lambrolizumab, MK-3475, SCH 900475
Treatment (ST-alpha-DC1, pembrolizumab)

Ancillary studies

Also known as: Quality of Life Assessment
Treatment (ST-alpha-DC1, pembrolizumab)

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age \>= 18 years of age
  • Pathologically confirmed diagnosis of unresectable or metastatic triple negative breast cancer (TNBC) with no curative treatment options
  • At least 2 target lesions present per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 at least one of which is amenable to biopsy and injection
  • PD-L1 negative metastatic TNBC patients who are treatment naive in the first linen metastatic setting are eligible
  • Both PD-L1 positive and PD-L1 negative metastatic TNBC patients in the second line setting and beyond are eligible
  • Have an Eastern Cooperative Oncology Group (ECOG) Performance Status of =\< 2
  • Platelets \>= 75,000/uL
  • Hemoglobin \>= 8 g/dL
  • Absolute Neutrophil Count (ANC) \>= 1500/uL
  • Creatinine =\< 1.5 x upper limit of normal (ULN) OR creatinine clearance \>= 30 mL/min for participant with creatinine levels \>1.5 x institutional ULN
  • Total bilirubin: =\< 2 x ULN OR direct bilirubin =\< ULN for participants with total bilirubin levels \> 2 x ULN
  • Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase \[SGOT\]) and alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\] =\< 3 x institutional ULN (=\< 5 x ULN for participants with liver metastases)
  • Participants of child-bearing potential must agree to use adequate contraceptive methods (e.g., hormonal or barrier method of birth control; abstinence) prior to study entry. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
  • Participant must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure

You may not qualify if:

  • Participants currently treated with systemic immunosuppressive agents, including steroids (\> than equivalent of 10 mg daily of prednisone) are ineligible until 3 weeks after removal from immunosuppressive treatment
  • Patients with active autoimmune disease or history of transplantation
  • Cardiac risk factors including:
  • Patients experiencing cardiac event(s) (acute coronary syndrome, myocardial infarction, or ischemia) within 3 months of signing consent
  • Patients with a New York Heart Association classification of III or IV
  • Pregnant or nursing female participants
  • Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis. Participants with previously treated brain metastases may participate provided they are radiologically stable, i.e. without evidence of progression for at least 4 weeks by repeat imaging (note that the repeat imaging should be performed during study screening), clinically stable and without requirement of steroid treatment for at least 14 days prior to first dose of study intervention
  • Has received prior radiotherapy within 2 weeks of start of study intervention. 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 (=\<2 weeks of radiotherapy) to non-CNS disease
  • Has received a live vaccine or live-attenuated vaccine within 30 days prior to the first dose of study drug. Administration of killed vaccines is allowed
  • Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 4 weeks prior to the first dose of study intervention
  • Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of study drug
  • Has severe hypersensitivity (\>= Grade 3) to pembrolizumab and/or any of its excipients
  • Has a history of (non-infectious) pneumonitis/interstitial lung disease that required steroids or has current pneumonitis/interstitial lung disease
  • Has an active infection requiring systemic therapy
  • Has active Human Immunodeficiency Virus (HIV) infection
  • +6 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Roswell Park Cancer Institute

Buffalo, New York, 14263, United States

Location

MeSH Terms

Conditions

Triple Negative Breast Neoplasms

Interventions

BiopsyLeukapheresispembrolizumab

Condition Hierarchy (Ancestors)

Breast NeoplasmsNeoplasms by SiteNeoplasmsBreast DiseasesSkin DiseasesSkin and Connective Tissue Diseases

Intervention Hierarchy (Ancestors)

CytodiagnosisCytological TechniquesClinical Laboratory TechniquesDiagnostic Techniques and ProceduresDiagnosisSpecimen HandlingDiagnostic Techniques, SurgicalSurgical Procedures, OperativeInvestigative TechniquesCytapheresisBiological TherapyTherapeuticsBlood Component RemovalLeukocyte Reduction ProceduresCell Separation

Study Officials

  • Shipra Gandhi

    Roswell Park Cancer Institute

    PRINCIPAL INVESTIGATOR
0

Study Design

Study Type
interventional
Phase
phase 2
Allocation
NA
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 9, 2022

First Posted

September 14, 2022

Study Start

February 1, 2025

Primary Completion (Estimated)

February 1, 2027

Study Completion (Estimated)

February 1, 2027

Last Updated

January 29, 2025

Record last verified: 2025-01

Locations