What this phase means
Phase 3: this treatment already looked useful in smaller studies. Now it is tested in a large group, often against standard care or a dummy treatment, to see if it should be approved.
Phase labels are FDA/ICH categories applied to the registry Phase field. They are not a finding that this study succeeded.
What the registry says happens
If you join, the listed intervention(s) are Sacituzumab tirumotecan, Pembrolizumab, or Rescue Medication. The registry lists allocation as randomized. Researchers want to know if sacituzumab tirumotecan given alone or with pembrolizumab can treat triple negative breast cancer (TNBC).
They plan to enroll about 1,000 people at 285 sites. Taking part typically means taking a study drug (or dummy pill), an infusion or injection of a biologic plus check-ins.
Official title (unrewritten)
A Phase 3, Randomized, Open-label Study Comparing Efficacy and Safety of Sacituzumab Tirumotecan (Sac-TMT, MK-2870) as a Monotherapy and in Combination With Pembrolizumab (MK-3475) Versus Treatment of Physician's Choice in Participants With Previously Untreated Locally Recurrent Unresectable or Metastatic Triple-Negative Breast Cancer Expressing PD-L1 at CPS Less Than 10 (TroFuse-011)
Interventions: Sacituzumab tirumotecan, Pembrolizumab, Rescue Medication, Paclitaxel, Nab-paclitaxel, Gemcitabine, Carboplatin
Primary outcome (registry wording): Progression-Free Survival (PFS) (sac-TMT versus treatment of physician's choice (TPC); sac-TMT plus pembrolizumab versus TPC)