Clinical trials
Colorectal (Colon or Rectal) Cancer clinical trials
Below are recruiting colorectal (colon or rectal) cancer clinical trials, each written for real people, not researchers. We’re tracking 867 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06728072RecruitingPhase 2
Adding antibiotics to first chemo for advanced colorectal cancer
This trial tests whether adding a short course of antibiotics to your standard first chemotherapy for stage 4 colorectal cancer can improve treatment. The antibiotics target certain gut bacteria that might affect how well the chemo works.
Richmond, VirginiaAges 18 years+ - NCT06729736Enrolling by invitation
Faster recovery after colorectal cancer surgery
This trial is testing a program called ERAS (Enhanced Recovery After Surgery) to help patients recover faster after minimally invasive colorectal cancer surgery. It aims to improve your recovery and reduce hospital stay.
Seoul, SeoulAges 19 years+ - NCT06719414Recruiting
Using a special MRI to predict rectal cancer response to pre-surgery therapy
This trial uses a special type of MRI scan (called amide proton transfer-weighted imaging) to look at your rectal cancer before and after chemotherapy and/or radiation. The goal is to see if the scan can predict whether the cancer has completely disappeared by the time of surgery, which could help guide future treatment decisions.
Guangzhou, GuangdongAges Any age - NCT06689293Recruiting
Stool test for follow-up after colorectal cancer treatment
This trial is testing whether a simple stool test (FIT) can replace some follow-up colonoscopies or CT scans for people who have been treated for colorectal cancer. If you are due for a routine check-up after your cancer surgery, you may be able to take this test at home instead of having a more invasive procedure.
NottinghamAges 18 years+ - NCT06647680RecruitingPhase 2
Chemo and immunotherapy before surgery for rectal cancer
This trial tests a combination of chemotherapy and an immunotherapy drug (a PD-1 inhibitor) given before surgery for locally advanced rectal cancer. The goal is to see if this approach can improve outcomes compared to standard treatment.
Qingdao, ShandongAges 18–75 - NCT06634875RecruitingPhase 2
Test of isunakinra alone or with pembrolizumab for colorectal cancer
This trial tests a new drug combination (isunakinra plus pembrolizumab) for people with a specific type of colorectal cancer (MSS, RAS-mutated) that has a high tumor mutational burden. It may help if other treatments have stopped working.
Los Angeles, CaliforniaAges 18 years+ - NCT06589440RecruitingPhase 2
Study of SR-8541A plus two immunotherapies for advanced colorectal cancer
This trial tests a new drug combination (SR-8541A, botensilimab, and balstilimab) for people with a specific type of metastatic colorectal cancer that is not MSI-high. It aims to see if this combination can help when other treatments have stopped working.
Morristown, New JerseyAges 18 years+ - NCT05576480RecruitingPhase 2
Immunotherapy plus chemotherapy before surgery for rectal cancer without mismatch repair
This Phase 2 study tests penpulimab (an immunotherapy medicine) given with CAPEOX chemotherapy before surgery for rectal cancer that is “MSS” (not the mismatch-repair type). It aims to shrink the tumor and improve outcomes by treating before the operation.
Shanghai, None SelectedAges 18–75 - NCT06501053Recruiting
Contact X-ray therapy for early rectal cancer
This trial tests a special type of contact X-ray (brachytherapy) for early-stage rectal cancer. It may help avoid major surgery by treating the tumor from inside the rectum.
Stockholm, SolnaAges 18 years+ - NCT06434376Enrolling by invitationEarly Phase 1
Personalized immune therapy for ctDNA-positive colorectal cancer
This trial tests a personalized immune therapy (like a custom vaccine) for people with colorectal cancer that has a positive ctDNA MRD test after surgery. It aims to use the body's own immune system to target any remaining cancer cells and prevent the cancer from coming back.
Wenzhou, ZhejiangAges 18–80 - NCT06380101Recruiting
Special diet with standard therapy for rectal cancer
This trial tests a special medical food that limits certain amino acids (building blocks of protein) during standard treatment for rectal cancer. The goal is to see if this diet helps the treatment work better while reducing side effects.
Tampa, FloridaAges 18–100 - NCT06349590RecruitingPhase 1/Phase 2
Diet before colon cancer surgery to reduce recurrence
This trial tests whether a specific diet before colon cancer surgery can change the bacteria in your gut to help prevent the cancer from coming back or spreading. Patients who are eligible will follow the diet for a short time before their operation.
Chicago, IllinoisAges 18 years+ - NCT06281405RecruitingPhase 2
CAPOX and immunotherapy with or without radiation for rectal cancer
This trial tests whether adding radiation therapy to a combination of chemotherapy (CAPOX) and an immunotherapy drug (PD-1 antibody) is more effective than the combination alone for people with locally advanced rectal cancer that is MSS (microsatellite stable) or pMMR. It aims to improve outcomes for patients with high-risk features.
ShanghaiAges 18–70 - NCT06274190Recruiting
Better bowel symptom tracking after rectal cancer treatment
This study develops an electronic diary to help track and manage bowel symptoms after rectal cancer surgery or active surveillance. It aims to create personalized care plans to improve your quality of life.
Leuven, Vlaams-BrabantAges 18 years+ - NCT06245356RecruitingPhase 2
A safety trial of trifluridine/tipiracil for DPD-deficient patients
This trial tests a chemotherapy drug (trifluridine/tipiracil) in people with metastatic colorectal or gastroesophageal cancer who have a DPD deficiency. DPD deficiency means your body may have trouble breaking down certain chemotherapy drugs, which can lead to serious side effects. This study aims to see if this drug is safe and effective for you.
AmiensAges 18 years+ - NCT06249672Recruiting
Long-term outcomes after rectal preservation for rectal cancer
This study looks at how well people with rectal cancer do over time when they try to keep their rectum instead of having surgery. It is for patients who have already had chemoradiation and whose tumor has shrunk to a small scar (2 cm or less).
BernAges 18 years+ - NCT06204094RecruitingPhase 2
Preserving the anus with chemo, immunotherapy, and radiation for rectal cancer
This trial tests a treatment plan that combines chemotherapy, immunotherapy, and radiation before surgery for patients with middle or low rectal cancer. The goal is to shrink the tumor enough to avoid removing the anus, preserving bowel function.
Jinhua, ZhejiangAges 18–75 - NCT06162650RecruitingPhase 2
Pre-surgery chemo-radiation therapy for rectal cancer
This trial tests a combination of chemotherapy and radiation therapy before surgery for people with mid or low rectal cancer that hasn't spread. The goal is to see if this approach works better than current treatments.
TainanAges 20 years+ - NCT06123156RecruitingPhase 3
Early erectile rehabilitation after rectal cancer treatment
This trial tests if sildenafil (Viagra) given soon after surgery and radiation for rectal cancer can help preserve erectile function. It is for men with normal erectile function before treatment who have a regular partner.
AmiensAges 18–70 - NCT06107920RecruitingPhase 3
Chemotherapy before surgery for blocked colon cancer
This trial tests whether giving chemotherapy before surgery helps people with colon cancer that caused a blockage and needed a temporary colostomy. It aims to improve outcomes compared to standard treatment.
AmiensAges 18 years+ - NCT06052332Recruiting
Comparing two pre-surgery treatments for older adults with rectal cancer
This study compares two approaches to treating rectal cancer in people age 70 and older who have not yet had surgery. One approach gives chemotherapy and radiation before surgery, and the other adds more chemotherapy after radiation. The goal is to find which plan works better with fewer side effects.
Antwerp, AntwerpenAges 70 years+ - NCT03926338RecruitingPhase 2
Before-surgery immunotherapy for MSI-H or dMMR colon cancer
This trial studies a treatment given before surgery using toripalimab, with or without celecoxib, for colon or rectal cancer that has MSI-H or dMMR tumor features. It aims to shrink or control the cancer before the operation and compare whether adding celecoxib helps.
Guangzhou, GuangdongAges 18–75 - NCT05943210Recruiting
Molecular testing of rectal cancer after short-course radiation
This study looks at molecular (tumor biology) features of rectal cancer in people receiving standard short-course radiation. Your tissue and/or samples may be used to better understand the cancer and how it responds to treatment.
Chicago, IllinoisAges 18–90 - NCT05914766Recruiting
Support program for newly diagnosed rectal cancer patients
This trial tests an informational and supportive care program for people with newly diagnosed, locally advanced rectal cancer. It may help by providing education and practical support around next steps in treatment.
Boston, MassachusettsAges 18 years+
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Common questions
- Are there clinical trials for colorectal (colon or rectal) cancer?
- Yes. Clin2 currently lists 867 recruiting colorectal (colon or rectal) cancer studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a colorectal (colon or rectal) cancer trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a colorectal (colon or rectal) cancer trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.