A Study to Compare Sacituzumab Tirumotecan (MK-2870) in Combination With Pembrolizumab (MK-3475) Versus Pembrolizumab Alone as Treatment in Participants With Mismatch Repair Proficient Endometrial Cancer (MK-2870-033/TroFuse-033/GOG-3119/ENGOT-en29)

Condition(s) studied

Investigational drug(s) / intervention(s)

Pembrolizumab: Intravenous (IV) Infusion

Carboplatin: During the Induction Phase, participants receive carboplatin AUC 5 (mg/mL/min) on Day 1 of each 3-week cycle for 6 cycles (up to approximately 4 months) via IV infusion.

Paclitaxel: During the Induction Phase, participants receive paclitaxel 175 mg/m\^2 on Day 1 of each 3-week cycle for 6 cycles (up to approximately 4 months) via IV infusion.

Docetaxel: During the Induction Phase, participants may receive docetaxel (in place of paclitaxel) 75 mg/m\^2 on Day 1 of each 3-week cycle for 6 cycles (up to approximately 4 months) via IV infusion.

Sacituzumab Tirumotecan: IV Infusion

Cisplatin: During the Induction Phase, participants may receive cisplatin (in place of carboplatin) 75 mg/m\^2 on Day 1 of each 3-week cycle for 6 cycles (up to approximately 4 months) via IV infusion

Study summary

Researchers are looking for new ways to treat people with proficient mismatch repair (pMMR) endometrial cancer (EC) that is advanced or recurrent.

* EC is a type of cancer that starts in the tissues inside the uterus (womb)
* pMMR indicates that certain normal proteins are present in the cancer cells
* Advanced means the cancer has spread locally or to other parts of the body (metastatic) and cannot be removed with surgery
* Recurrent means the cancer came back after surgery

Sacituzumab tirumotecan (also known as sac-TMT) and pembrolizumab are the study medicines. Sac-TMT is an antibody drug conjugate (ADC). An ADC attaches to specific targets on cancer cells and delivers treatment to destroy those cells.

The goal of this study is to learn if people who receive sac-TMT with pembrolizumab live longer and without the cancer getting worse compared to people who receive pembrolizumab alone.

Eligibility

Primary outcome measure(s)

• Maintenance Treatment: Progression-Free Survival (PFS) — Up to approximately 44 months
  PFS is defined as the time from randomization to the first documented progressive disease (PD) or death due to any cause, whichever occurs first as assessed by Response Criteria in Solid Tumors Version 1.1 (RECIST 1.1) as evaluated by the blinded independent central review (BICR). PD is defined as ≥20% increase in the sum of diameters of target lesions. In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of ≥5 mm. The appearance of one or more new lesions is also considered PD.
• Maintenance Treatment: Overall Survival (OS) — Up to approximately 54 months
  OS is defined as time from randomization to death due to any cause.

Trial sites (263)

+ 223 more sites — see the full list on the official registry below.

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