Skip to content

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
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07228832
Acronym
HARMONi-GI3
Enrollment
600
Registered
2025-11-14
Start date
2025-11-18
Completion date
2029-11-30
Last updated
2026-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Metastatic Colorectal Cancer (CRC)

Keywords

mCRC, Ivonescimab

Brief 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.

Interventions

DRUGDrug: 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.

DRUGDrug: 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.

Sponsors

Summit Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. ECOG performance status score of 0 or 1 2. Expected life expectancy ≥ 6 months 3. Patients with histologically or cytologically confirmed metastatic CRC 4. No prior systemic therapy for metastatic CRC 5. At least 1 measurable noncerebral lesion

Exclusion criteria

1. Microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) disease 2. Known BRAF V600E mutant status 3. Current presence of significant radiographic or clinical manifestations of gastrointestinal (GI) obstruction 4. Ascites requiring paracentesis within last 30 days 5. Patients who have received prior immunotherapy or anti-angiogenic therapy for colorectal cancer 6. Active or prior history of inflammatory bowel disease (eg, Crohn's disease, ulcerative colitis, or chronic diarrhea) 7. Resectable disease

Design outcomes

Primary

MeasureTime frameDescription
PFS by IRRC based on RECIST v1.1Up to approximately 2.5 yearsProgression-free survival (PFS) assessed by IRRC per RECIST v1.1

Secondary

MeasureTime frameDescription
Overall Survival (OS) in the populationUp to approximately 4 yearsOverall Survival (OS) in the mCRC population
ORRUp to approximately 2.5 yearsEfficacy measures such as overall response rate (ORR), which is the proportion of subjects with CR or PR by IRRC based on RECIST v1.1
Adverse Events (AE)Up to approximately 4 yearsincidence and severity of adverse events (AEs) and clinically significant abnormal laboratory test results \[From the time subject signs the ICF to 30 days (AE) and 90 days (SAE related to ivonescimab/bevacizumab) after the last dose of study treatment or initiation of other anticancer therapy, whichever occurs first\]
DoRup to approximately 2.5 yearsEfficacy measures such as duration of response (DoR), which is the proportion of subjects with CR or PR by IRRC based on RECIST v1.1

Countries

Belgium, Canada, China, Czechia, France, Germany, Hungary, Italy, Japan, Poland, Puerto Rico, Spain, United Kingdom, United States

Contacts

CONTACTNing Chang, MD
medicalaffairs@summitplc.com1-833-256-0522

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026