Clinical trials
Rectal Cancer, Radiotherapy clinical trials
Below are recruiting rectal cancer, radiotherapy clinical trials, each written for real people, not researchers. We’re tracking 205 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06850103RecruitingPhase 2
Chemo, radiation, and immunotherapy for advanced rectal cancer that has spread a little
This trial tests a combination of chemotherapy, radiation, and an immunotherapy drug (serplulimab) for people with rectal cancer that has spread to just a few spots in the body (no more than 5 tumors in up to 2 locations). It aims to see if this approach is safe and effective.
Hangzhou, ZhejiangAges 18–75 - NCT06613165Recruiting
Short vs long treatment for stage II-III rectal cancer with dMMR
This trial tests how long you need a PD-1 immunotherapy before surgery for a specific type of rectal cancer (dMMR/MSI-H). It looks at whether a shorter or longer course works best. This could mean fewer side effects and a quicker path to surgery.
Xi'an, ShaanxiAges 18–80 - NCT06911684RecruitingPhase 2
Combination therapy before surgery for rectal cancer
This trial tests a combination of radiation, two immunotherapy drugs (iparomlimab and tuvonralimab), a targeted therapy (regorafenib), and chemotherapy (CAPOX) given before surgery for locally advanced rectal cancer. The goal is to see if this approach can shrink the tumor and improve outcomes for people whose tumors have normal mismatch repair proteins (pMMR/MSS).
Guangzhou, GuangdongAges 18–75 - NCT06542757Recruiting
Focused radiation to main prostate tumor using MRI guidance
This trial tests a stronger, more focused radiation dose to the main tumor inside the prostate using MRI guidance. It aims to improve control of intermediate-risk prostate cancer while possibly reducing side effects.
New York, New YorkAges 18 years+ - NCT07346248Enrolling by invitation
Complications after pre-surgery treatment for advanced rectal cancer
This study looks at complications that happen after surgery in patients with advanced rectal cancer who got radiation or chemo-radiation before their operation. Researchers want to learn how different pre-surgery treatments affect recovery.
Rozzano, MilanAges 18 years+ - NCT03587480Recruiting
Surgery methods after chemo-radiation for stage 3 rectal cancer
This trial compares two different surgery approaches after chemo-radiation for stage 3 rectal cancer. It aims to see which operation helps control the cancer more effectively while keeping surgery as safe as possible.
Guangzhou, GuangdongAges 18–75 - NCT04087421RecruitingPhase 3
Transanal irrigation vs glycerol suppositories for LARS
This trial compares two ways to help bowel control in people with low anterior resection syndrome (LARS) after low rectal surgery. It aims to see which option works better when standard treatments have not helped enough.
AarhusAges 18 years+ - NCT05049317Recruiting
Check urinary and sexual function after rectal cancer surgery
This study looks at how a specific rectal surgery (laparoscopic total mesorectum excision) affects urinary and sexual function after the operation. It may help patients by tracking what to expect and which factors relate to better recovery.
Wuhan, HubeiAges 18–70 - NCT05076500Recruiting
How radiotherapy changes a tumor’s immune response
This study looks at how a tumor’s immune system responds when you receive radiotherapy. It involves taking a planned pre-treatment biopsy so researchers can study immune and tumor changes and see if radiotherapy affects them.
ManchesterAges 18 years+ - NCT05254327RecruitingPhase 2
Radiation plus or minus BMX-001 for advanced rectal cancer
This Phase 2 study tests two different ways of giving radiation before surgery for locally advanced rectal cancer, with or without an added study drug called BMX-001. It aims to see whether the shorter/longer radiation plans and BMX-001 improve cancer control and are safe.
Lexington, KentuckyAges 18 years+ - NCT06923150Recruiting
MiniGo vs. standard care for bowel symptoms after rectal cancer surgery
This trial tests a small, portable device called MiniGo that uses a gentle water rinse to help control bowel symptoms after rectal cancer surgery. It may be an option for people who still have bothersome bowel problems despite trying other treatments.
AmiensAges 18 years+ - 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 - 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+ - 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 - 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 - NCT07573371Recruiting
Understanding bowel changes after rectal cancer surgery
This study helps doctors better understand and treat bowel control problems that can happen after rectal cancer surgery or other rectal treatments. If you've had this surgery or treatment, the study team wants to learn more about your recovery and test new ways to help.
AalborgAges 18 years+ - NCT07378631Recruiting
Radiation rectal injury subtypes and outcomes study
This study looks at different types of radiation rectal injury to understand how they affect recovery. It may help you if you have been diagnosed with this condition and are not currently undergoing cancer treatment.
Guangzhou, GuangdongAges 18–80 - NCT06931808Enrolling by invitationPhase 4
Fecal transplant with chemo, radiation, and immunotherapy for advanced colon cancer
This study tests a combination of fecal microbiota transplant, chemotherapy, radiation, and immunotherapy (sintilimab) for people with locally advanced rectal cancer. The goal is to see if this approach improves treatment outcomes.
Ningbo, ZhejiangAges 18–75 - NCT06523634Recruiting
SBRT for rising PSA after prostate removal
This trial tests a precise type of radiation (called SBRT) to the prostate bed for men whose PSA starts rising after prostate removal surgery. It aims to see if this targeted approach can effectively treat the recurrence without needing long-term hormone therapy.
AalstAges 18 years+ - NCT06325982Recruiting
Preventing rectal injury from radiation with a medicated enema
This trial tests whether a medicated enema can help prevent radiation damage to the rectum during pelvic radiotherapy. It may be a good option if you are starting radiation to the pelvis or rectum and are otherwise in good health.
Xiamen, FujianAges Any age - NCT06594887Recruiting
Rectal spacer use during proton therapy for prostate cancer
This trial tests how well a rectal spacer works when you get proton beam therapy for prostate cancer. The spacer is a gel placed between your prostate and rectum to protect healthy tissue.
Somerset, New JerseyAges 18 years+ - NCT06848465RecruitingPhase 1
Radiation plus chemo-immunotherapy for colon cancer with liver spread
This trial tests a combination of low-dose radiation, chemotherapy, and immunotherapy for people with colorectal cancer that has spread only to the liver. The goal is to see if this approach can shrink tumors and improve outcomes.
Chongqing, Chongqing MunicipalityAges 18–80 - NCT06569368RecruitingPhase 2
Metronidazole with rectal cancer treatment
This trial tests adding the antibiotic metronidazole to standard pre-surgery therapy for locally advanced rectal cancer. The goal is to see if changing the bacteria in your gut can make the cancer treatment work better.
Houston, TexasAges 18 years+ - NCT06835725RecruitingPhase 2
Comparing two prostate radiation schedules for intermediate risk
This trial compares giving radiation in 2 treatments versus 5 treatments for prostate cancer that hasn't spread. It's for men with low or intermediate risk prostate cancer who are healthy enough to undergo a short course of targeted radiation.
Surrey, British ColumbiaAges 18 years+
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Common questions
- Are there clinical trials for rectal cancer, radiotherapy?
- Yes. Clin2 currently lists 205 recruiting rectal cancer, radiotherapy 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 rectal cancer, radiotherapy 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 rectal cancer, radiotherapy 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.