Clinical trials guide

Colorectal Cancer Clinical Trials, Explained

Colorectal cancer, which includes colon and rectal cancer, is studied in many clinical trials focused on prevention, screening, and treatment.

This page explains in general terms how trials relate to colorectal cancer care. It does not recommend a trial or determine your eligibility. Your oncology team is the best guide for your situation.

Educational only — not medical advice. Cancer Explained does not recommend clinical trials or determine eligibility. Whether a clinical trial is appropriate for you depends on your diagnosis, test results, and treatment history — please discuss clinical trials with your oncology team.

Current research areas

Broad, well-established directions researchers are exploring — not specific trials.

Targeted therapy research

Studies of treatments aimed at specific features of some colorectal cancers.

Immunotherapy research

Studies of approaches that work with the immune system.

Screening and early detection research

Studies of better ways to find colorectal cancer early.

Survivorship and quality-of-life studies

Studies of well-being during and after treatment.

How trials fit into colorectal cancer care

Clinical trials can be part of colorectal cancer care at different stages. In treatment trials, people usually receive at least the standard of care.

Whether a trial fits depends on details only your team can review. Trials are one option to discuss together.

Phases you may hear about

Colorectal cancer trials run across all phases. The phase does not tell you whether a trial suits you; your team can explain what a specific study involves.

New to trial phases? Read the guide →

Questions patients ask

Would I still get standard treatment?

In most treatment trials, everyone receives at least standard care.

Are there trials for prevention or screening too?

Yes. Some trials study ways to prevent or find colorectal cancer, not just treat it.

How do I find trials?

You can search official listings and ask your oncology team for help.

Questions to ask your oncologist

Could a clinical trial be an option for me?
What would the study be testing?
Would I still receive standard treatment?
What are the possible benefits and risks?
How often would I have visits or tests?
Will my insurance cover routine care during the trial?
What happens if I decide to withdraw?

Build a printable question list

Words to know

ArticleWhat Is Colorectal Cancer?A plain-language explanation of colorectal cancer, how it often starts as a polyp, and why removing polyps can help, based on National Cancer Institute resources. ArticleWhat Are Clinical Trials?A plain-language explanation of what cancer clinical trials are, why they matter, and the main types, based on National Cancer Institute resources. ArticleThe Phases of Clinical TrialsA plain-language explanation of the four phases of cancer clinical trials and how randomization works, based on National Cancer Institute resources. ArticleHow to Find a Clinical TrialA plain-language, step-by-step guide to finding a cancer clinical trial — gathering your cancer details, searching ClinicalTrials.gov and NCI's trial search, and the questions to ask the research team.

Official resources

Official resource — external (NCI)NCI: Colorectal Cancer Official resource — opens ClinicalTrials.govSearch colorectal cancer trials on ClinicalTrials.gov