Study of TDXd, Chemotherapy, Pembrolizumab, and Trastuzumab in First-Line Metastatic HER2-Positive Gastric or Gastroesophageal Junction Cancer
A Multicenter, Randomized, Open-Label, Phase 3 Trial of Trastuzumab Deruxtecan (Enhertu®) Plus Chemotherapy Plus or Minus Pembrolizumab Versus Chemotherapy Plus Trastuzumab Plus or Minus Pembrolizumab as First-Line Treatment in Participants With Unresectable, Locally Advanced or Metastatic HER2-Positive Gastric Or Gastroesophageal Junction (GEJ) Cancer (Destiny-Gastric05)
Daiichi Sankyo
726 participants
Feb 27, 2025
INTERVENTIONAL
Conditions
Summary
This clinical trial is designed to assess the efficacy and safety of the triplet combination of trastuzumab deruxtecan (ENHERTU, T-DXd, DS-8201a) plus a fluoropyrimidine plus pembrolizumab versus standard of care (SoC) chemotherapy plus trastuzumab plus pembrolizumab as first-line therapy in participants with unresectable, locally advanced or metastatic HER2-positive tumor PD-L1 CPS ≥1 gastric or GEJ cancer in the Main Cohort. An Exploratory Cohort will also be evaluated to assess the efficacy and safety of T-DXd plus a fluoropyrimidine versus SoC chemotherapy plus trastuzumab in participants with unresectable, locally advanced or metastatic HER2-positive tumor PD-L1 CPS \<1 gastric or GEJ cancer.
Eligibility
Plain Language Summary
Simplified for easier understanding
This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.
Interested in this trial?
Get notified about updates and connect with the research team.
Interventions
T-DXd will be administered at a dose of 5.4 mg/kg intravenously (IV) every 3 weeks (Q3W)
Pembrolizumab will be administered at a dose of 200 mg IV Q3W
Trastuzumab will be administered at a loading dose of 8 mg/kg IV followed by 6 mg/kg IV Q3W
For Arms M1 and E1: 5-FU or capecitabine will be administered. For Arms M2 and E2: Cisplatin plus 5-FU or oxaliplatin plus capecitabine will administered.
Locations(250)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT06731478