A Study to Learn About the Study Medicine Called PF-08634404 in Combination With Chemotherapy in Adult Participants With Metastatic Colorectal Cancer

NCT ID: NCT07222800

Last Updated: 2026-01-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

800 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-12-11

Study Completion Date

2031-08-01

Brief Summary

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The purpose of this study is to learn more about a new medicine called PF-08634404, and how well it works in people with cancer of the colon or rectum (CRC)). The goal is to understand if the new study medicine, combined with chemotherapy that is approved for colorectal cancer, can help people whose cancer has spread or returned after treatments taken before.

To join the study, participants must meet the following conditions:

* Be 18 years or older.
* Have colorectal cancer that has spread to other parts of your body.
* Be in good enough health to receive study treatment.
* Should not be pregnant before starting treatment.

Participants will be randomized (like flipping a coin) to one of 2 different treatment arms. The first arm (Arm A) will include the new medicine PF-08634404 in combination with chemotherapy that is approved for colorectal cancer, and the second arm (Arm B) will include an approved medicine for colorectal cancer, called Bevacizumab, in combination with chemotherapy that is approved for this type of cancer. Participants and their doctors will not know which arm they are being assigned to. Participants will receive all the study medications through intravenous (IV) infusions, which means the medicine is given directly into a vein. The treatment will be given in cycles, and participants may continue receiving it if it is helping and they are not experiencing serious side effects.

The medicine will be given at a clinical site, where trained medical staff will check participants during and after each treatment.

* The study is expected to last approximately 33 months for each participant.
* Participants will have regular visits to the study site for treatment, health checks, and tests.
* After stopping treatment, participants will return for a final visit about 30 to37 days later to check their health and review any side effects.
* Follow-up will continue every 12 weeks by phone or in person or by reviewing health records to check on health status and any new treatments.

Detailed Description

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Conditions

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Intestinal Neoplasms Gastrointestinal Neoplasms Digestive System Neoplasms Neoplasms by Site Digestive System Diseases Gastrointestinal Diseases Colonic Diseases Intestinal Diseases Rectal Diseases Colorectal Neoplasms

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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PF-08634404 + Chemotherapy

Participants will receive PF-08634404 intravenously (IV) in combination with Chemotherapy.

Group Type EXPERIMENTAL

PF-08634404

Intervention Type DRUG

Solution for infusion

Chemotherapy

Intervention Type DRUG

Injection for intravenous use

Bevacizumab + Chemotherapy

Participants will receive bevacizumab IV in combination with Chemotherapy.

Group Type ACTIVE_COMPARATOR

Bevacizumab

Intervention Type BIOLOGICAL

Injection for intravenous use

Chemotherapy

Intervention Type DRUG

Injection for intravenous use

Interventions

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PF-08634404

Solution for infusion

Intervention Type DRUG

Bevacizumab

Injection for intravenous use

Intervention Type BIOLOGICAL

Chemotherapy

Injection for intravenous use

Intervention Type DRUG

Other Intervention Names

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Avastin

Eligibility Criteria

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Inclusion Criteria

* Histological or cytological confirmed colorectal adenocarcinoma.
* Evidence of Stage IV metastatic disease.
* No prior systemic therapy for metastatic disease.
* Eastern Cooperative Oncology Group performance status (ECOG) 0-1
* At least one measurable lesion according to RECIST 1.1 per Investigator assessment.
* Adequate hepatic, liver, and renal function

Exclusion Criteria

Participants are excluded from the study if any of the following criteria apply:

* Locally confirmed BRAF V600E mutation
* Locally confirmed microsatellite instability (MSI)-high or DNA mismatch repair deficiency (dMMR) colorectal cancer
* Participants with known active symptomatic CNS lesions, including leptomeningeal metastasis, brainstem, meningeal, or spinal cord metastases or compression
* Clinically significant risk of hemorrhage or fistula
* Major surgery or severe trauma within 4 weeks prior to the first dose, or planned major surgery during the study
* History of allogeneic organ transplantation and allogeneic hematopoietic stem cell transplantation
* Any Grade ≥3 bleeding/hemorrhage events within 28 days of Cycle 1 Day 1, or prior history of clinically significant bleeding events
* Clinically significant cardiovascular disease, or other comorbidities, within 6 months prior to first dose
* Participants with active autoimmune diseases requiring systemic treatment within the past 2 years
* Evidence of non-infectious or drug-induced interstitial lung disease (ILD) pneumonitis
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Pfizer

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Pfizer CT.gov Call Center

Role: STUDY_DIRECTOR

Pfizer

Locations

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Mid Florida Hematology and Oncology Center

Orange City, Florida, United States

Site Status RECRUITING

Cancer Care Centers of Brevard, Inc.

Palm Bay, Florida, United States

Site Status RECRUITING

Illinois Cancer Care

Canton, Illinois, United States

Site Status RECRUITING

Hope and Healing Cancer Services

Hinsdale, Illinois, United States

Site Status RECRUITING

Hematology Oncology Associates of Rockland

Nyack, New York, United States

Site Status RECRUITING

Oncology Associates of Oregon, P.C.

Albany, Oregon, United States

Site Status RECRUITING

Texas Oncology - West Texas

Odessa, Texas, United States

Site Status RECRUITING

Texas Oncology - Northeast Texas

Tyler, Texas, United States

Site Status RECRUITING

Icon Cancer Centre Wesley

Auchenflower, , Australia

Site Status RECRUITING

Icon Cancer Centre Hobart

Hobart, , Australia

Site Status RECRUITING

Kyushu University Hospital

Fukuoka, , Japan

Site Status RECRUITING

Saitama Medical University International Medical Center

Hidaka, , Japan

Site Status RECRUITING

National Hospital Organization Osaka Medical Center

Osaka, , Japan

Site Status RECRUITING

Saitama Prefectural Cancer Center

Saitama, , Japan

Site Status RECRUITING

The Cancer Institute Hospital of JFCR

Tokyo, , Japan

Site Status RECRUITING

Pan American Center for Oncology Trials, LLC

Rio Piedras, , Puerto Rico

Site Status RECRUITING

Countries

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United States Australia Japan Puerto Rico

Central Contacts

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Pfizer CT.gov Call Center

Role: CONTACT

1-800-718-1021

Related Links

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https://pmiform.com/clinical-trial-info-request?StudyID=C6461003

To obtain contact information for a study center near you, click here.

Other Identifiers

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2025-523521-18-00

Identifier Type: CTIS

Identifier Source: secondary_id

Symbiotic-GI-03

Identifier Type: OTHER

Identifier Source: secondary_id

C6461003

Identifier Type: -

Identifier Source: org_study_id

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