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PET Dynamics to Response-Adapted Neoadjuvant Therapy in TNBC

A Pilot Study of Neoadjuvant Response-Adapted Chemotherapy With Pembrolizumab in Patients With Stage 2 and 3 Triple Negative Breast Cancer to Determine Early PET and Biomarker Dynamics

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06245889
Acronym
NeoADAPT
Enrollment
30
Registered
2024-02-07
Start date
2024-05-01
Completion date
2030-06-01
Last updated
2026-09-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Triple Negative Breast Cancer

Keywords

breast cancer, triple negative, neoadjuvant

Brief summary

Eligible patients with stage 2 and 3 triple negative breast cancer will be treated with 4 cycles of neoadjuvant paclitaxel/carboplatin/pembrolizumab. A PET scan will be performed at baseline and after 1 cycle of therapy. A breast MRI will be performed after treatment completion. Patients with complete clinical response will proceed to surgery. Patients with clinical residual disease will complete neoadjuvant rescue with 4 cycles of doxorubicin/cyclophosphamide prior to surgery. If residual disease identified after surgery, adjuvant therapy to be determined by the treating oncologist (may include doxorubicin/cyclophosphamide/pembrolizumab, capecitabine etc).

Detailed description

Eligible participants will undergo baseline procedures including research bloodwork, MRI and PET scan. Participants will then be treated with one cycle of paclitaxel, carboplatin and pembrolizumab (TCarbo/pembro). At the end of Cycle one patients will undergo repeat procedures (bloodwork and PET scan), and then continue with treatment for an additional three cycles. ctDNA will be collected on day 1 of each cycle. At the end of treatment patients will undergo repeat MRI. Patients achieving a clinical complete response (CR) on MRI will proceed with surgery. Patients with clinical residual disease (RD) on MRI will be recommended a biopsy, and be recommended "rescue" neoadjuvant doxorubicin and cyclophosphamide with pembrolizumab (AC/pembro) for four additional cycles, and then proceed with surgery. Note: patients/treating physician may opt to proceed with surgery. Archival tissue will be collected from the surgical product. Patients achieving a pathologic CR (pCR) may proceed with adjuvant pembrolizumab per standard of care, and treating physician's discretion. Patients with pathological RD may proceed with "rescue" adjuvant AC/pembrolizumab for four additional cycles (if not given neoadjuvantly), per treating physician discretion. The participants may also receive Aadjuvant capecitabine or olaparib as indicated and per treating physician's discretion.

Interventions

DRUGPaclitaxel

chemotherapy

DRUGCarboplatin

chemotherapy

DRUGPembrolizumab

immunotherapy

DRUGDoxorubicin

additional chemotherapy - neoadjuvant or adjuvant rescue

DRUGCyclophosphamide

additional chemotherapy - adjuvant rescue

DRUGOlaparib

adjuvant rescue

DRUGCapecitabine

adjuvant rescue

Sponsors

Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Lead SponsorOTHER
Breast Cancer Research Foundation
CollaboratorOTHER

Study design

Allocation
NA
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Eligible patients with stage 2 and 3 TNBC (ER\<10% eligible) will be treated with 4 cycles of paclitaxel/carboplatin/pembrolizumab prior to surgery. A PET scan will be performed at baseline and after 1 cycle of therapy. A breast MRI will be performed after treatment completion. Patients with complete clinical response will proceed to surgery. Patients with RD will complete neoadjuvant rescue with 4 cycles of doxorubicin/cyclophosphamide prior to surgery. If residual disease identified after surgery, adjuvant therapy to be determined by the treating oncologist (may include doxorubicin/cyclophosphamide/pembrolizumab, capecitabine etc).

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Stage II-III TNBC - estrogen receptor (ER) and progesterone receptor (PR) up to and including 10% is eligible 2. Age ≥ 18 years 3. Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 2 4. Eligible for standard chemo-immunotherapy as determined by treating physician, including consideration of: 1. Adequate marrow and organ function 2. Co-morbid conditions do not preclude the use of chemo-immunotherapy (such as uncontrolled autoimmune disease, or the use of immunosuppressive medications) 5. Patients must have the ability to understand and the willingness to sign a written informed consent prior to registration on study

Exclusion criteria

1. Patients unable to undergo PET or MRI 2. Evidence of metastatic disease or loco-regional recurrence (i.e. distant or chest wall recurrence) 3. Inflammatory breast cancer 4. Previous treatment with paclitaxel, carboplatin, or immune checkpoint inhibitors

Design outcomes

Primary

MeasureTime frameDescription
SULmax in relation to pCR8 monthsEvaluate if lack of decrease in fluorodeooxyglucose (FDG) / positron emission tomography (PET) standardized uptake value corrected for lean body mass (SULmax) by \<40% after 1 cycle of neoadjuvant therapy correlates with residual disease at the time of surgery.

Secondary

MeasureTime frameDescription
Pathologic complete response (pCR)3 yearsEvaluate the pathologic complete response (pCR) rate in patients with early-stage triple negative breast cancer (TNBC) treated with neoadjuvant chemo-immunotherapy.
Circulating tumor deoxyribonucleic acid (ctDNA) clearance3 yearsEvaluate how circulating tumor deoxyribonucleic acid (ctDNA) kinetics collected at pre-treatment, and during and after completion of neoadjuvant treatment correlate with pathologic complete response (pCR) at the time of surgery.

Countries

United States

Contacts

CONTACTCesar A Santa-Maria, MD
csantam2@jhmi.edu410-614-0874
CONTACTHopkins Breast Trials
HopkinsBreastTrials@jhmi.edu410-614-1361
STUDY_CHAIRCesar A Santa-Maria, MD

Johns Hopkins University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 4, 2026