← Back to results
NCT06966700PHASE3RECRUITING

A Clinical Study of Sacituzumab Tirumotecan (Sac-TMT, MK-2870) in People With Breast Cancer (MK-2870-032)

A Phase 3, Randomized, Open-label Study to Evaluate the Efficacy and Safety of Sac-TMT (Sacituzumab Tirumotecan, MK-2870) Followed by Carboplatin/Paclitaxel vs Chemotherapy, Both in Combination With Pembrolizumab as Neoadjuvant Therapy for High-Risk, Early-Stage, Triple-Negative Breast Cancer or Hormone Receptor-low Positive/Human Epidermal Growth Factor Receptor-2 Negative Breast Cancer

Sponsor: Merck Sharp & Dohme LLC

No open prediction endpoints

Endpoints are classified and published by ProgramSignal analysts.

Request endpoint coverage

Key Facts

Study type
INTERVENTIONAL
Conditions
Breast Neoplasms, Triple Negative Breast Neoplasms, HR Low-Positive/HER2-Negative Breast Neoplasms
Interventions
Sacituzumab tirumotecan, Pembrolizumab, Rescue Medication, Carboplatin
Enrollment
2,400 participants
Primary completion
Mar 2033
Study completion
Dec 2034
First posted
May 2025
Last updated
May 2026

Primary Endpoints (CT.gov)

Percentage of Participants with Pathological Complete Response (pCR) at the Time of Definitive Surgery

Time frame: Up to approximately 30 weeks

Event-Free Survival (EFS)

Time frame: Up to approximately 92 months

Secondary Endpoints

Overall Survival (OS)

Percentage of Participants with pCR with No Ductal Carcinoma in Situ (pCR-no DCIS) at the Time of Definitive Surgery

Percentage of Participants with pCR at the Time of Definitive Surgery (High-risk, early-stage, TNBC subset)

Eligibility Criteria

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Has previously untreated high-risk, early-stage, non-metastatic (M0) breast cancer (BC), defined as any of the following combined primary tumor (T) and regional lymph node (N) staging per AJCC 8th edition criteria as assessed by the physician investigator based on radiological and/or clinical assessment: * cT1c, N1-N2 * cT2, N0-N2 * cT3, N0-N2 * cT4a-d, N0-N2 * The participant must have a centrally confirmed diagnosis of BC that is triple-negative or HR-low+/HER2- (defined as estrogen receptor (ER)-low+ expression in 1% to 10% cells and HER2- as by the most recent American Society of Clinical Oncology (ASCO)/College of American Pathologists (CAP) guidelines. * Provides a core needle biopsy from the primary breast tumor at screening to the central laboratory. * Has Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 performed within 28 days before Cycle1 Day 1 (C

Read full criteria on CT.gov →

✦ Analyst Commentary

Expert commentary on why this trial matters and what to watch for.

Request coverage →

Source

Open on ClinicalTrials.gov