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 901 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07173985Recruiting
Mailed colon cancer screening in Appalachia
This trial sends home a stool-based screening test to people in Appalachian counties. It aims to find the best way to help more people get screened for colon cancer.
Columbus, OhioAges 45–74 - NCT07549399RecruitingPhase 3
Radiation, Chemotherapy, and Immunotherapy for Rectal Cancer
This trial tests a combination of radiation, chemotherapy, and immunotherapy drugs before surgery for people with locally advanced rectal cancer. The goal is to shrink the tumor and improve outcomes for patients with higher-risk disease.
Guangzhou, GuangdongAges 18–75 - NCT07369830Recruiting
Probiotics for bowel function after rectal cancer surgery
This trial tests whether taking a probiotic supplement (Clostridium butyricum) can improve gut health and bowel function after surgery for very low rectal cancer. It may help patients who have a temporary ileostomy and are planning to have it reversed within 6 months.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT07371273RecruitingPhase 2
Comparing three surgeries for low rectal cancer
This trial tests three different surgical methods for rectal cancer located very close to the anal canal. The goal is to see which method works best in the short and long term while preserving anal function.
ShanghaiAges 18–75 - NCT02215889RecruitingPhase 1/Phase 2
Partial liver transplant for colon or rectal cancer spread to liver
This trial tests whether transplanting part of the liver can help people with colon or rectal cancer that has spread to the liver but cannot be removed with surgery. It also aims to make sure the cancer is limited mainly to the liver and that you are healthy enough for major treatment.
OsloAges 18 years+ - NCT02292641Recruiting
MRI study for repeat pelvic colorectal cancer
This study uses a special MRI to help understand and stage colorectal cancer that has come back in the pelvis. The goal is to improve how doctors make treatment decisions after previous surgery.
OsloAges 16 years+ - NCT02704520Recruiting
MRI scoring test for rectal cancer response to treatment
This study looks at how an MRI “score” (mrTRG) matches how well locally advanced rectal cancer shrinks after pre-surgery chemotherapy and radiation. The goal is to use MRI results to better predict treatment response and guide care.
Aberdeen, AberdeenshireAges 16 years+ - NCT07467434Recruiting
Chemo before surgery for rectal cancer with liver spread
This trial tests if giving FOLFIRINOX chemotherapy first can improve outcomes for people with rectal cancer that has spread to the liver but can still be removed by surgery.
Le Kremlin-BicêtreAges 18 years+ - NCT07474103Recruiting
Chemo, radiation, and immunotherapy for high-risk rectal cancer
This trial tests a treatment plan that combines chemotherapy, radiation, and an immunotherapy drug before surgery for people with high-risk locally advanced rectal cancer. The goal is to see if this approach can improve outcomes.
WuhanAges 18–75 - NCT07501845Recruiting
Registry for MAASTRO rectal applicator treatment
This study collects data from people treated with a special rectal applicator for rectal cancer. The goal is to observe long-term outcomes and improve future treatments.
MaastrichtAges 18 years+ - NCT07537998RecruitingPhase 2/Phase 3
Intestinal Fluid Recycling to Reduce Bowel Problems After Rectal Cancer Surgery
This trial tests a surgical technique that recycles intestinal fluids during rectal cancer surgery to help prevent bowel dysfunction and frequent bowel movements after surgery. If you've had mid-to-low rectal cancer removed and created a temporary opening (stoma), this study may help improve your quality of life.
Guangzhou, GuangdongAges 18–75 - NCT07607990Recruiting
Rectal Indomethacin to Prevent Catheter Discomfort After Prostate Surgery
This study tests whether a special suppository (indomethacin, a pain-relieving medication) placed in the rectum can reduce bladder catheter discomfort after laparoscopic prostate removal surgery. If it works, it could help patients recover more comfortably.
Hangzhou, ZhejiangAges 18–80 - NCT07646639RecruitingPhase 2
Radiation, chemotherapy, and immunotherapy for advanced rectal cancer
This study tests a combination of radiation therapy, chemotherapy drugs (capecitabine and oxaliplatin), and two types of immunotherapy (a PD-1 blocker and IL-2) for locally advanced rectal cancer. The goal is to see if this combination helps shrink tumors and improve outcomes before surgery.
Nanjing, JiangsuAges 18–70 - NCT07651553Recruiting
Transanal vs. Robotic Surgery for Rectal Cancer
This trial compares two surgical approaches to remove rectal cancer while preserving bowel function. Researchers want to see which method—performed through the anus or with robotic assistance—leads to better outcomes and quality of life.
Guangzhou, GuangdongAges 18–75 - NCT04575935RecruitingPhase 3
Minimally invasive surgery after chemotherapy for advanced ovarian cancer
This trial studies whether doing surgery using smaller incisions after chemotherapy works as well as a more traditional approach for certain people with stage IIIC–IV ovarian, fallopian tube, or primary peritoneal cancer. It may help reduce surgical trauma while aiming for effective tumor removal.
Miami, FloridaAges 18 years+ - NCT04945642Recruiting
Radiation combination therapy for intermediate to high-risk prostate cancer
This trial studies a combination of two radiation types—high-dose-rate brachytherapy and stereotactic body radiotherapy—to treat certain intermediate- to high-risk prostate cancers. It may help by aiming radiation closely at the prostate while also targeting the cancer from outside the body.
Los Angeles, CaliforniaAges 18 years+ - NCT04725903Recruiting
Proton beam radiation for high-risk prostate cancer
This trial tests proton radiation therapy for people with high-risk prostate cancer. It may help by delivering radiation in a more targeted way, with the goal of controlling the cancer while reducing exposure to nearby healthy tissue.
Atlanta, GeorgiaAges 18 years+ - NCT06205316RecruitingPhase 3
Radiation therapy for returning or limited-spread prostate cancer
This trial compares two types of radiation therapy for prostate cancer that has come back or spread to a few places after surgery. The goal is to see which radiation schedule works better with fewer side effects.
Scottsdale, ArizonaAges 18 years+ - NCT06330805RecruitingPhase 2
Comparing heart effects of two hormone therapies for prostate cancer
This trial compares two hormone therapies, relugolix and leuprolide, to see which one is better for your heart health in men with prostate cancer. It's for men with a specific type of prostate cancer that is not yet advanced.
Columbus, OhioAges 18 years+ - NCT02594202Recruiting
Collecting prostate cancer care details and prostate tissue samples
This trial enrolls adults who are being evaluated or treated for possible or confirmed prostate cancer and allows researchers to collect prostate tissue. It may help improve understanding of prostate cancer over the course of diagnosis and standard care.
Bethesda, MarylandAges 18 years+ - NCT07788625Recruiting
Focal therapy for prostate cancer not visible on MRI
This study tests a new way to treat prostate cancer that is not visible on MRI but is detected by a special PET scan. The treatment is a focal therapy that targets only the cancer while sparing healthy tissue, and it aims to control the cancer with fewer side effects.
Hong Kong, 香港島Ages 50 years+ - NCT05361798RecruitingPhase 2
Testing immune response after prostate radiation with or without a drug
This study checks how your immune system’s cancer-fighting cells change after stereotactic body radiation (SBRT) to the prostate. It compares SBRT alone versus SBRT plus an immunotherapy drug (PDS01ADC) in men with intermediate- or high-risk localized prostate cancer treated with hormone therapy (ADT).
Bethesda, MarylandAges 18 years+ - NCT07467928Recruiting
AI colonoscopy's long-term effect on advanced polyps
This study looks at how well AI-assisted colonoscopy prevents new advanced polyps from forming over the long term. It's for people who were in our earlier AI colonoscopy study and are healthy enough for a follow-up scope.
Hong KongAges 18 years+ - NCT07204665Enrolling by invitation
Emergency surgery vs. stent for colon cancer blockage
This study compares emergency surgery to placing a stent first for people with a blocked colon from cancer. It also looks at whether a special recovery program (ERAS) helps you heal faster after surgery.
Bilbao, VizcayaAges 18 years+
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Common questions
- Are there clinical trials for colorectal (colon or rectal) cancer?
- Yes. Clin2 currently lists 901 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.