At a glance
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A Double-Blind, Placebo-Controlled, Randomized, Multicenter Phase III Study Evaluating the Efficacy and Safety of Pertuzumab in Combination With Trastuzumab and Chemotherapy in Patients With HER2-Positive Metastatic Gastroesophageal Junction and Gastric Cancer
In Brief
A Phase 3 clinical trial evaluating 5-Fluorouracil, Capecitabine, and 4 other interventions for Gastric Cancer. Completed, enrolled 780 participants across 172 sites in 32 countries.
Detailed Summary
This double-blind, placebo-controlled, randomized, multicenter, international, parallel arm study will evaluate the efficacy and safety of pertuzumab in combination with trastuzumab, fluoropyrimidine and cisplatin as first-line treatment in participants with HER2-positive metastatic gastroesophageal junction (GEJ) or gastric cancer (GC). Participants will be randomized to receive pertuzumab 840 milligrams (mg) or placebo intravenously every 3 weeks (q3w) in combination with trastuzumab (initial dose of 8 milligrams per kilogram \[mg/kg\] intravenously \[IV\] followed by 6 mg/kg IV q3w) and cisplatin and fluoropyrimidine (capecitabine or 5-fluorouracil) for the first 6 treatment cycles. Participants will continue to receive pertuzumab or placebo and trastuzumab until disease progression occurrence of unacceptable toxicity or withdrawal from the study for another reason.
Study Details
Timeline
Interventions
Participants will receive 5-fluorouracil 800 milligrams per meter square (mg/m\^2)/24 hour IV infusion for 120 hours (Days 1-5) q3w for 6 cycles.
Participants will receive capecitabine 1000 mg/m\^2 orally twice daily, evening of Day 1 to morning of Day 15 (28 doses) q3w for 6 cycles.
Participants will receive cisplatin 80 mg/m\^2 IV q3w for 6 cycles.
Participants will receive pertuzumab 840 mg IV q3w until disease progression, occurrence of unacceptable toxicity, or withdrawal from the study for another reason.
Participants will receive placebo (matched to pertuzumab) IV q3w until disease progression, occurrence of unacceptable toxicity, or withdrawal from the study for another reason.
Participants will receive 8 mg/kg IV initial dose on Day 1, followed by 6 mg/kg IV q3w until disease progression, occurrence of unacceptable toxicity, or withdrawal from the study for another reason.