NCT07228832

Phase III Study of Ivonescimab or Bevacizumab Combined With FOLFOX in Patients With Metastatic Colorectal Cancer

A Randomized, Active-Controlled, Double-blind, Multicenter, Phase 3 Clinical Study of Ivonescimab in Combination With FOLFOX Versus Bevacizumab in Combination With FOLFOX for the First-line Treatment of Metastatic Colorectal Cancer

• Status: Recruiting
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 600 (estimated)
• Sponsor: Summit Therapeutics · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

A Randomized, Active-Controlled, Double-blind, Multicenter, Phase 3 Clinical Study of Ivonescimab in Combination with mFOLFOX6 (Oxaliplatin, Leucovorin and 5-Fluorouracil) versus Bevacizumab in Combination with FOLFOX for the First-line Treatment of Metastatic Colorectal Cancer(HARMONi-GI3)

Detailed description

This trial will be performed as a phase 3, randomized, active-controlled, double-blind, multiregional study comparing Ivonescimab in combination with mFOLFOX6 (Oxaliplatin, Leucovorin and 5-Fluorouracil) versus Bevacizumab in combination with mFOLFOX6 in patients with metastatic colorectal cancer who have not previously received systemic therapy for metastatic disease. Approximately 600 patients will be randomly assigned to the 2 treatment groups in a 1:1 ratio. Each enrolled subject will receive an intravenous infusion of the Ivonescimab/Bevacizumab Plus mFOLFOX6 (Q2W, up to 8 cycles) in treatment periods per the randomization schedule. Afterward, Ivonescimab/ Bevacizumab Plus 5-Fluorouracil and Leucovorin will be used for maintenance treatment (administered on Day 1 of each cycle, Q2W) for up to 2 years.

Conditions

• Metastatic Colorectal Cancer (CRC)

Interventions

Type	Name	Description
DRUG	Drug: Ivonescimab Injection	Subjects will receive Ivonescimab Plus mFOLFOX6 (Oxaliplatin, Leucovorin and 5-Fluorouracil) via intravenous infusion (IV) Q2W, up to 8 cycles. Afterward, Ivonescimab plus Leucovorin and 5-Fluorouracil will be used for maintenance treatment (administered on Day 1 of each cycle, Q2W) for up to 2 years.
DRUG	Drug: Bevacizumab Injection	Subjects will receive bevacizumab Plus mFOLFOX6 (Oxaliplatin, Leucovorin and 5-Fluorouracil) via intravenous infusion (IV) Q2W, up to 8 cycles in treatment periods per the randomization schedule. Afterward, bevacizumab Plus 5-FU and Leucovorin will be used for maintenance treatment (administered on Day 1 of each cycle, Q2W) up to 2 years.

Timeline

• Start date: 2025-11-18
• Primary completion: 2028-05-31
• Completion: 2029-11-30
• First posted: 2025-11-14
• Last updated: 2026-04-06

Locations

54 sites across 5 countries: United States, Canada, Japan, Puerto Rico, United Kingdom

Regulatory

• FDA-regulated drug study