We’re researching a potential treatment for metastatic colorectal cancer to see if it may work better than a current standard treatment.

Participants in this clinical trial will receive either a study medicine combined with chemotherapy or bevacizumab (an approved medicine) combined with chemotherapy. This clinical trial will help researchers learn if the study medicine combination works better than the bevacizumab combination to treat metastatic colorectal cancer. 

If you choose to take part in this clinical trial, you could help us continue to make progress in colorectal cancer research.

Who may participate

Joining a clinical trial is an important and personal decision. 

You may be eligible to take part in this clinical trial if you are: 

  • 18 years or older
  • Have been diagnosed with metastatic (stage IV) colorectal cancer
  • Have not previously received any anticancer treatment for metastatic colorectal cancer 

This is not a complete list of the eligibility criteria for this clinical trial. The study doctor will review all eligibility criteria with you.

Condition

Metastatic colorectal cancer

Age

18+ years

Sex

Male or Female

Each clinical study has its own guidelines for who can participate, called eligibility criteria. However, only the research study staff can determine if you qualify to enroll in the study.

What to expect

If this clinical trial is a good fit for you and you decide to participate, you will receive either the study medicine or bevacizumab (an approved medicine), in combination with chemotherapy. 

You will have a 50% (1 in 2) chance of receiving the study medicine and a 50% chance of receiving bevacizumab. All participants will also receive chemotherapy. 

You will receive the study treatments for approximately 2 years, or until your cancer worsens or until you or the study doctor decides you should stop the study treatment. Most study visits are expected to last approximately 5 to 6 hours and will consist of different types of tests, procedures, and assessments. 

All participants will have an in-person follow-up visit or phone call every 12 weeks after the end-of-treatment visit, until the study ends.

Length of study treatment

Approximately 2 years

Follow-up

In-person visit or phone call every 12 weeks after the end-of-treatment visit

About the study treatments

A group of elderly friends, sitting at a table, drinking coffee, and having a conversation – Pfizer Clinical Trials
A group of elderly friends, sitting at a table, drinking coffee, and having a conversation – Pfizer Clinical Trials

About the study treatments

The study medicine is a bispecific antibody designed to target two different proteins, PD-1 and VEGF, at the same time. These proteins can play a role in how the cancer grows and how the immune system responds to it. It is thought that by binding (or connecting) to these two proteins, the study medicine may help the immune system find and attack the cancer cells while also potentially slowing down tumor growth, which may be more effective for treating colorectal cancer. 

Bevacizumab combined with chemotherapy is a standard treatment for metastatic colorectal cancer. Bevacizumab targets VEGF, which reduces the blood supply to the tumor and stops the tumor acquiring the oxygen and nutrients that it needs to grow.

Potential risks and benefits of taking part in the clinical trial

People who take part in clinical studies are key to advancing medical research. By taking part in this clinical trial, you will be helping to advance research which may help yourself and others with metastatic colorectal cancer in the future. 

This clinical trial offers the opportunity to explore if a potential study medicine may work better than an approved standard treatment, when combined with chemotherapy, for people with colorectal cancer. 

Participant safety is the top priority of this clinical trial. It is possible your condition or health may improve, worsen, or stay the same. Your study doctor will discuss all the possible risks and benefits of participating with you if you qualify and choose to enroll. 

In addition:

  • The study team will monitor your health closely during the clinical trial
  • The study treatments and any study-related procedures will be provided at no cost
  • Travel support may also be available
  • You will help advance research for the future of colorectal cancer treatments

Potential risks and benefits of taking part in the clinical trial

Woman reclines on a couch in a sun lit living room, while playing with her dog who sits on her lap – Pfizer Clinical Trials
Woman reclines on a couch in a sun lit living room, while playing with her dog who sits on her lap – Pfizer Clinical Trials

Frequently asked questions

Why is this research important?

This clinical trial is evaluating a study medicine to see if it may work better than standard treatments to treat metastatic colorectal cancer. Despite some advancements in treatment options, there is still an urgent need to develop potential therapies that can improve the long-term prognosis for people with colorectal cancer.

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Is there a cost to participate in this clinical trial?

The study treatment and any study-related procedures are generally covered at no cost. You may be paid back (reimbursed) for reasonable expenses that you and your caregiver have as a result of taking part in this study. This may include parking, meals, or other travel-related expenses. Please speak with the study doctor if you have any questions about costs resulting from being in this study.

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Will I know which study treatment I am receiving?

This is a double-blind clinical trial, which means that you and the study team will not know whether you are receiving the study medicine or bevacizumab. You will receive chemotherapy in combination with the study medicine or bevacizumab. You will have a 50% (1 in 2) chance of receiving the study medicine and a 50% chance of receiving bevacizumab.

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What are biomarkers and why do your samples matter?

As part of this study, we will analyze your blood samples and a small portion of your tissue sample to examine various biological indicators known as biomarkers. These biomarkers will help us understand how the study drug interacts with your body and what factors may influence its effectiveness. By studying these markers, we aim to identify which patients are most likely to benefit from this treatment in the future.

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