← Eichor
Study identifier: NCT06312176 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

A Study of Sacituzumab Tirumotecan (MK-2870) as a Single Agent and in Combination With Pembrolizumab (MK-3475) Versus Treatment of Physician's Choice in Participants With HR+/HER2- Unresectable Locally Advanced or Metastatic Breast Cancer (MK-2870-010)

Condition: Breast Neoplasms  ·  Sponsor: Merck Sharp & Dohme LLC

PhasePhase 3
Planned participants1200
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The purpose of this study is to compare sacituzumab tirumotecan as a single agent, and in combination with pembrolizumab, versus Treatment of Physician's Choice (TPC) in participants with hormone receptor positive/human epidermal growth factor receptor-2 negative (HR+/HER2-) unresectable locally advanced, or metastatic, breast cancer. The primary hypotheses are that sacituzumab tirumotecan as a single agent and sacituzumab tirumotecan plus pembrolizumab are superior to TPC with respect to progression-free survival (PFS) per Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1) by blinded independent central review (BICR) in all participants.

This description comes directly from the study's public registry record.

Talk to the study team

Toll Free Number  ·  1-888-577-8839  ·  Trialsites@msd.com

Always discuss trial participation with your own doctor first.

Locations (259)

Ironwood Cancer & Research Centers ( Site 0066)Chandler, Arizona, United StatesRecruiting
Banner MD Anderson Cancer Center-Oncology ( Site 0004)Gilbert, Arizona, United StatesRecruiting
Providence Medical Foundation-Oncology ( Site 0020)Fullerton, California, United StatesRecruiting
Moores Cancer Center ( Site 0059)La Jolla, California, United StatesActive Not Recruiting
Cancer and Blood Specialty Clinic ( Site 0001)Los Alamitos, California, United StatesRecruiting
University of Colorado Anschutz Medical Campus ( Site 0061)Aurora, Colorado, United StatesRecruiting
UCHealth Cherry Creek Medical Center ( Site 0094)Denver, Colorado, United StatesRecruiting
University of Colorado Health - Highlands Ranch Hospital ( Site 0095)Highlands Ranch, Colorado, United StatesCompleted
Yale Cancer Center ( Site 0060)New Haven, Connecticut, United StatesRecruiting
Stamford Hospital ( Site 0049)Stamford, Connecticut, United StatesRecruiting
AdventHealth Altamonte Springs ( Site 0021)Altamonte Springs, Florida, United StatesRecruiting
University of Florida College of Medicine ( Site 0063)Gainesville, Florida, United StatesActive Not Recruiting

+ 247 more locations — full list on the registry record.

Follow this study

Get one email when the public record changes — results posted, or the study's status changes. Nothing else, ever.

We email about this public record only. Unsubscribe anytime with one click. Never medical advice.

Is this your study? This page was generated automatically from the public registry record. Sponsors can claim it — free — to add branding and verified contact routing. Claim this page →

This page is independently generated by Eichor from the public ClinicalTrials.gov record and re-synced daily. It is not the sponsor's official website unless claimed. Nothing here is medical advice; eligibility is always determined by the study team — talk to your own doctor first.

Source record: clinicaltrials.gov/study/NCT06312176