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Study of Petosemtamab Plus Chemotherapy Versus Cetuximab Plus Chemotherapy in RAS and BRAF Wild-type, Unresectable or Metastatic, Left-sided Colorectal Cancer (LiGeR-CRC1)

Testing Petosemtamab with chemo for certain colorectal cancer types.

Recruiting
18 years and older
All
Phase 3

This study is looking at how well a new drug called petosemtamab works with chemotherapy for a type of colon cancer that is on the left side of the colon and cannot be removed by surgery or has spread. Two groups of participants will either receive petosemtamab with chemotherapy or another standard drug called cetuximab with chemotherapy. Both chemotherapy options are named mFOLFOX6 and FOLFIRI, which are combinations of different medicines.

Participants will visit the study clinic twice every 4 weeks for tests and procedures to see if the treatment is working and safe. The length of time participants stay in the study will vary depending on their individual response to treatment.

  • Participants must have a specific type of colon cancer that hasn't been treated before.
  • Participants can't join if they have certain genetic changes in their cancer.
  • Participants will not receive a placebo, which is a fake treatment.
Study details
    Left-sided Colorectal Cancer

NCT07702032

Genmab

11 October 2026

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Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

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The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

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Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

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Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
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