A Phase 3 interventional study of bevacizumab and cetuximab in Colorectal Cancer, sponsored by Alliance for Clinical Trials in Oncology. Completed at 683 sites in 2 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-07.
Sponsored by Alliance for Clinical Trials in Oncology · Phase 3, Interventional, and Treatment
PURPOSE: This randomized phase III trial is studying cetuximab and/or bevacizumab when given together with combination chemotherapy to compare how well they work in treating patients with metastatic colorectal cancer.
RATIONALE: Monoclonal antibodies, such as cetuximab and bevacizumab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. Cetuximab may also stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Bevacizumab may also stop the growth of tumor cells by blocking blood flow to the tumor. Drugs used in chemotherapy, such as fluorouracil, leucovorin, oxaliplatin, and irinotecan, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving monoclonal antibodies together with combination chemotherapy may kill more tumor cells. It is not yet known whether combination chemotherapy is more effective with cetuximab and/or bevacizumab in treating patients with colorectal cancer.
OUTLINE: This is a randomized, open-label, multicenter study. Patients are stratified according to physician-selected chemotherapy (FOLFOX or FOLFIRI), prior adjuvant chemotherapy (yes vs no), and prior pelvic radiotherapy (yes vs no). Patients were randomized to 1 of 3 treatment arms.
Primary Objective:
Secondary Objectives:
There are premedication guidelines that were established for patients assigned to receive cetuximab. All patients must be premedicated with diphenhydramine hydrochloride 50 mg (or a similar agent) IV prior to the first dose of cetuximab in an effort to prevent an infusion or hypersensitivity reaction. Premedication is also recommended prior to subsequent doses, but at the investigator's discretion the dose of diphenhydramine (or a similar agent) may be reduced. Pretreatment with acetaminophen may also be used.
There are bevacizumab administration instructions for patients for whom surgery is being contemplated or required. For patients for whom elective surgery is contemplated, bevacizumab is to be discontinued for at least 8 weeks prior to surgery. Bevacizumab may be resumed after at least 4 weeks following surgery. Patients who undergo complete resection of metastatic disease will discontinue protocol therapy and may receive further treatment at the treating physician's discretion. For patients for whom non-elective surgery is required, hold bevacizumab as long as possible prior to surgery and for at least 6 weeks following surgery.
Patients received a minimum of two cycles of therapy. Patients were allowed to receive ancillary therapy per protocol. Treatment continued until disease progression, unacceptable toxicity, or surgery with curative intent as planned. After completion of study treatment, patients are followed up to 5 years.
5,599 studies on the registry are indexed under Colorectal Neoplasms; 1,459 are open to participants now.
This study's enrollment of 2,334 is above the median of 77 across 4,123 interventional studies indexed under Colorectal Neoplasms.
Browse Colorectal Neoplasms studies →Alliance for Clinical Trials in Oncology is the lead sponsor of 499 studies on the registry; 27 are open to participants now.
Of its 6 completed or terminated interventional studies of FDA-regulated products, 6 (100%) have results posted.
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Locally Advanced or Metastatic Colorectal Cancer
Patients with a history of colorectal cancer treatment by surgical resection who develop radiological or clinical evidence of metastatic cancer do not require separate histological or cytological confirmation of metastatic disease unless:
Prior Treatment
No prior systemic treatment for advanced or metastatic colorectal cancer is allowed. Prior regional chemotherapy (eg, hepatic arterial infusion) is also not allowed.
Patients may not have had prior radiotherapy to greater than 25% of bone marrow.
(Standard adjuvant rectal cancer chemoradiation will not exclude patient from protocol entry.) Radiation must have concluded ≥ 4 weeks prior to randomization.
For patients who are to receive FOLFIRI: No evidence of Gilbert's Syndrome or of homozygosity for the UGT1A1*28 allele.
Patients on full-dose anticoagulation (eg, warfarin) are eligible provided that both of the following criteria are met:
No significant history of bleeding events or GI perforation:
Non-pregnant and not nursing:
Required Initial Laboratory Values:
Urinalysis ≤ 1 + protein*
Patients receive bevacizumab 5 mg/kg IV every two weeks and then receive either FOLFOX or FOLFIRI every two weeks as described in the intervention section. One cycle is defined as 8 weeks of treatment. Treatment continues until disease progression, unacceptable toxicity or surgery with curative intent as planned.
Biological: bevacizumab · Drug: FOLFOX or · Drug: FOLFIRI
Patients receive cetuximab 400mg/m\^2 IV over 2 hours on the first day of treatment, then 250 mg/m\^2 IV over 1 hour weekly thereafter. Patients also receive either FOLFOX or FOLFIRI every two weeks as described in the intervention section. One cycle is defined as 8 weeks of treatment. Treatment continues until disease progression, unacceptable toxicity or surgery with curative intent as planned.
Biological: cetuximab · Drug: FOLFOX or · Drug: FOLFIRI
Patients receive cetuximab 400mg/m\^2 IV over 2 hours on the first day of treatment, then 250 mg/m\^2 IV over 1 hour weekly thereafter. Also, patients receive bevacizumab 5 mg/kg IV every two weeks and then receive either FOLFOX or FOLFIRI every two weeks as described in the intervention section. One cycle is defined as 8 weeks of treatment. Treatment continues until disease progression, unacceptable toxicity or surgery with curative intent as planned.
Biological: bevacizumab · Biological: cetuximab · Drug: FOLFOX or · Drug: FOLFIRI
Given IV
Given IV
Patients receive oxaliplatin 85 mg/m\^2 IV infused over two hours followed by leucovorin 400 mg/m\^2 IV over 2 hours followed by 5-FU 400 mg/m\^2 IV bolus, then 2400 mg/m\^2 continuous IV infusion over 46-48 hours
Also known as: Eloxatin (oxaliplatin), leucovorin (folinic acid) and 5-Fluorouracil (5-FU)
Patients receive irinotecan 180 mg/m\^2 IV infused over 90 minutes followed by leucovorin 400 mg/m\^2 IV over 2 hours followed by 5-FU 400 mg/m\^2 IV bolus following leucovorin then 2400 mg/m\^2 continuous IV infusion over 46-48 hours.
Also known as: CPT-11 (irinotecan), leucovorin (folinic acid), and 5-Fluorouracil (5-FU)
Overall Survival
Survival time will be defined as the time from registration to death. Time to event distributions will be estimated using the Kaplan-Meier method. Overall Survival (OS) will be compared between Arm A and Arm B.
Time frame: Up to 5 years post-treatment
Progression-free Survival (PFS)
PFS will be measured from study entry until first documented progression or death from any cause. Time to event distributions will be estimated using the Kaplan-Meier method. PFS will be compared between Arm A and Arm B.
Time frame: Up to 5 years post-treatment
Time to Treatment Failure
Time frame: Up to 5 years post-treatment
Duration of Tumor Response
Time frame: Up to 5 years post-treatment
| Milestone | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab | Arm C: FOLFOX or FOLFIRI + Cetuximab + Bevacizumab |
|---|---|---|---|
| Started | 899 | 902 | 533 |
| Completed | 899 | 902 | 533 |
| Not completed | 0 | 0 | 0 |
Survival time will be defined as the time from registration to death. Time to event distributions will be estimated using the Kaplan-Meier method. Overall Survival (OS) will be compared between Arm A and Arm B.
| months | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab | Arm C: FOLFOX or FOLFIRI + Cetuximab + Bevacizumab |
|---|---|---|---|
| Overall Survival | 29.0 (25.6 to 31.2) | 30.0 (27.5 to 32.8) | — |
PFS will be measured from study entry until first documented progression or death from any cause. Time to event distributions will be estimated using the Kaplan-Meier method. PFS will be compared between Arm A and Arm B.
| months | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab | Arm C: FOLFOX or FOLFIRI + Cetuximab + Bevacizumab |
|---|---|---|---|
| Progression-free Survival (PFS) | 10.6 (9.5 to 11.1) | 10.5 (9.5 to 11.3) | — |
| months | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab |
|---|---|---|
| Time to Treatment Failure | 5.3 (5.1 to 5.6) | 5.5 (5.1 to 5.7) |
| months | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab |
|---|---|---|
| Duration of Tumor Response | 10.0 (9.2 to 11.3) | 10.6 (9.5 to 12.3) |
Non-serious events are listed at a 0% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Arm A: FOLFOX or FOLFIRI + Bevacizumab | — | 98/559 (17.5%) | 531/559 (95%) |
| Arm B: FOLFOX or FOLFIRI + Cetuximab | — | 111/578 (19.2%) | 548/578 (94.8%) |
| Event | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab |
|---|---|---|
| Neutrophil count decreasedInvestigations | 35/559 | 36/578 |
| ThrombosisVascular disorders | 14/559 | 22/578 |
| Vascular access complicationInjury, poisoning and procedural complications | 2/559 | 7/578 |
| Death NOSGeneral disorders and administration site conditions | 5/559 | 2/578 |
| Serum magnesium decreasedMetabolism and nutrition disorders | 0/559 | 5/578 |
| FatigueGeneral disorders and administration site conditions | 4/559 | 3/578 |
| SepsisInfections and infestations | 0/559 | 4/578 |
| Blood glucose increasedMetabolism and nutrition disorders | 1/559 | 4/578 |
| Respiratory disorderRespiratory, thoracic and mediastinal disorders | 0/559 | 4/578 |
| Myocardial ischemiaCardiac disorders | 3/559 | 1/578 |
| Event | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab |
|---|---|---|
| FatigueGeneral disorders and administration site conditions | 397/559 | 418/578 |
| Peripheral sensory neuropathyNervous system disorders | 355/559 | 344/578 |
| DiarrheaGastrointestinal disorders | 304/559 | 346/578 |
| Neutrophil count decreasedInvestigations | 316/559 | 334/578 |
| Serum magnesium decreasedMetabolism and nutrition disorders | 56/559 | 231/578 |
| Platelet count decreasedInvestigations | 208/559 | 210/578 |
| Abdominal painGastrointestinal disorders | 189/559 | 186/578 |
| HypertensionVascular disorders | 179/559 | 80/578 |
| VomitingGastrointestinal disorders | 174/559 | 185/578 |
| ProteinuriaRenal and urinary disorders | 159/559 | 43/578 |
During the trial, it was learned that KRAS mutation predicted for lack of efficacy of EGFR antibodies; also studies showed no benefit from chemo combined with both Bevacizumab and an EGFR antibody. The trial was amended to 2 arms limited to KRAS wild type patients. Only confirmed and consented KRAS wild type patients were analyzed.
| Age, Continuous(years) | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab | Arm C: FOLFOX or FOLFIRI + Cetuximab + Bevacizumab | Total |
|---|---|---|---|---|
| Median | 59 (21.8 to 85) | 59.2 (20.8 to 89.5) | — | 59.1 (20.8 to 89.5) |
| Sex: Female, Male(Participants) | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab | Arm C: FOLFOX or FOLFIRI + Cetuximab + Bevacizumab | Total |
|---|---|---|---|---|
| Female | 211 | 229 | — | 440 |
| Male | 348 | 349 | — | 697 |
| Region of Enrollment(participants) | Arm A: FOLFOX or FOLFIRI + Bevacizumab | Arm B: FOLFOX or FOLFIRI + Cetuximab | Arm C: FOLFOX or FOLFIRI + Cetuximab + Bevacizumab | Total |
|---|---|---|---|---|
| Canada | 32 | 32 | — | 64 |
| United States | 527 | 546 | — | 1073 |
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This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.
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Alliance for Clinical Trials in Oncology