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 209 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05555888RecruitingPhase 2
Immunotherapy plus short-course radiation for early rectal cancer
This study tests whether combining immunotherapy with a short course of radiation given before surgery can improve outcomes in early-stage rectal cancer. It may help the immune system work better against the tumor before it is removed.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT07469306RecruitingPhase 2
Comparing two radiation plans with chemo and immunotherapy for rectal cancer
This study compares two ways of giving radiation therapy for advanced rectal cancer, combined with a chemotherapy pill and an immunotherapy drug. One approach uses a shorter course of radiation before surgery, and the other uses a longer course; researchers want to see which is more effective and safer.
Fuzhou, FujianAges 18–75 - NCT07458529RecruitingPhase 2
Chemoradiation plus immunotherapy with or without probiotics for rectal cancer
This trial tests adding an immunotherapy drug (tislelizumab) and a probiotic to standard chemoradiation for locally advanced rectal cancer that has not spread. The goal is to see if the probiotic helps the treatment work better.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06793137RecruitingPhase 2
Antibiotics before surgery for advanced rectal cancer
This trial tests if taking antibiotics before standard treatment can improve outcomes for people with advanced rectal cancer that requires surgery.
São Paulo, São PauloAges 18 years+ - NCT06802666RecruitingPhase 2
Short radiation plus combo drugs for rectal cancer
This trial tests a new combination for rectal cancer that hasn't spread far: a short course of radiation followed by two drugs (AK112 and CAPOX). The goal is to shrink the tumor before surgery and possibly avoid more aggressive treatments.
HubeiAges 18–75 - NCT04103567Recruiting
Testing stool and bacteria clues for poor rectal cancer response
This study looks at stool samples to see whether gut bacteria or other microbes help explain why some rectal cancers respond less well to treatment given before surgery. If you have mid or lower rectal cancer and are planning pre-surgery treatment, your information and stool sample may help researchers improve how treatment is chosen.
Montpellier, HéraultAges 18 years+ - NCT07407465RecruitingPhase 2
Study of a new drug combo for advanced HER2-positive colorectal cancer
This trial tests a combination of three drugs (trastuzumab deruxtecan, capecitabine, and bevacizumab) as the first treatment for people with HER2-positive colorectal cancer that has spread or cannot be removed by surgery. The goal is to see if this combination can shrink tumors and help patients live longer.
LyonAges 18 years+ - NCT07359989Recruiting
Leucine plus chemoradiation before surgery for rectal cancer
This trial tests whether adding leucine (a simple amino acid) to standard chemoradiation before surgery can help shrink rectal cancer and improve outcomes. It is for people with locally advanced rectal cancer that hasn't yet spread to other organs.
Hangzhou, ZhejiangAges 18–80 - NCT06854679Recruiting
MRI-guided radiation for rectal cancer
This trial tests a new way of giving radiation therapy for rectal cancer, using MRI scans to aim the radiation more precisely. It's for people who need chemotherapy and radiation before surgery, and it aims to make treatment more effective while reducing side effects.
Sutton, SurreyAges 18 years+ - NCT07346534Enrolling by invitation
Comparing reinforced vs. standard bowel connection in rectal cancer surgery
This study compares two ways of reconnecting the bowel after removing rectal cancer using keyhole surgery. It aims to see if a reinforced connection (with extra support) helps prevent leaks better than the standard method.
ShanghaiAges 18–85 - NCT07347951RecruitingPhase 2
New drug combo for rectal cancer patients who want to save their anus
This trial tests a combination of short-course radiation, chemotherapy, and two targeted drugs (Serplulimab and Bevacizumab) for people with a specific type of rectal cancer. It aims to see if this treatment can help shrink the tumor enough to avoid surgery and keep the anus.
Wenzhou, ZhejiangAges 18–75 - NCT07337876RecruitingPhase 2
Avoiding surgery for rectal cancer with precise radiation
This trial tests a new way to give high-dose radiation to rectal cancer tumors while avoiding the bladder and bowels. The goal is to cure the cancer without removing the rectum, so you may keep normal bowel function.
Tübingen, Baden-WurttembergAges 18 years+ - NCT07284992RecruitingPhase 2
Comparing short vs long radiation with immunotherapy for rectal cancer
This trial tests whether a short course of radiation followed by an immunotherapy drug (PD-L1 inhibitor) plus chemotherapy works as well as or better than a longer radiation course for locally advanced rectal cancer. The goal is to shrink tumors before surgery.
Jinan, ShandongAges 18–80 - NCT07281157RecruitingPhase 2
Liposomal irinotecan, capecitabine and enlonstobart with short radiation for rectal cancer
This trial tests a combination of short-course radiation, two chemotherapy drugs (liposomal irinotecan and capecitabine), and an immunotherapy drug (Enlonstobart) for people with locally advanced rectal cancer. The goal is to see if this approach can shrink the tumor before surgery.
Tianjin, Tianjin MunicipalityAges 18–75 - NCT07253298Enrolling by invitation
Kegel exercises with biofeedback for bowel recovery after rectal cancer surgery
This trial studies whether doing Kegel exercises with biofeedback (a technique that helps you see how your muscles are working) can improve bowel function, reduce emotional distress, and boost quality of life after rectal cancer surgery.
TaipeiAges 18 years+ - NCT07239466RecruitingPhase 2
Ketone supplement with radiation and chemo for rectal cancer
This study tests a combination of a special diet supplement (beta-hydroxybutyrate), short radiation therapy, immunotherapy, and chemotherapy before surgery for locally advanced rectal cancer. The goal is to see if this approach helps shrink the tumor and improve treatment outcomes.
Wuhan, HubeiAges 18–75 - NCT07221058RecruitingPhase 1
Adaptive radiation boost study for rectal cancer
This study tests whether giving an extra, targeted radiation dose (adaptive radiation boost) after standard treatment can improve outcomes for people with rectal cancer. You may be eligible if you have stage T2-3 N0-1 rectal cancer and can undergo MRI scans and certain chemotherapies.
Philadelphia, PennsylvaniaAges 18 years+ - NCT06718543RecruitingPhase 2
Short-course radiation with AK112 for rectal cancer before surgery
This trial tests whether combining short-course radiation with an immune therapy drug (AK112) plus chemotherapy before surgery is better than radiation alone for locally advanced rectal cancer. It aims to shrink tumors and improve outcomes without needing stronger treatments later.
Chongqing, Chongqing MunicipalityAges 18–80 - NCT06928584RecruitingPhase 2
Shorter Radiation Plus Immunotherapy for Recurrent Rectal Cancer
This trial tests whether a shorter, higher-dose radiation course (hypofractionated) combined with immunotherapy works better than standard radiation for locally recurrent rectal cancer that hasn't spread elsewhere. It's for people who haven't had chemotherapy or recent pelvic radiation.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT07200141RecruitingPhase 2
Boosting radiation before surgery for rectal cancer
This trial tests a new way of giving radiation therapy before surgery for rectal cancer. It uses a higher dose to the tumor during standard radiation to see if it can improve outcomes.
BeijingAges 18–80 - NCT07198165RecruitingPhase 2
Short radiation followed by chemo plus bevacizumab with or without immunotherapy for rectal cancer
This trial tests whether adding an immunotherapy drug (PD-1 inhibitor) to standard chemoradiation and targeted therapy improves outcomes for locally advanced rectal cancer. It is for patients who have not had prior treatment and do not have certain genetic markers (BRAF mutation or MSI-H).
ShanghaiAges 18–75 - NCT07188025RecruitingPhase 3
Cancer DNA test to guide chemo after rectal cancer surgery
This trial tests whether checking for tumor DNA in your blood after surgery can help decide if you need additional chemotherapy. If the test finds cancer DNA, you may get chemo to lower the risk of the cancer coming back.
's-HertogenboschAges 18 years+ - NCT07183865RecruitingPhase 2
Radiation, chemo, and immunotherapy for recurrent rectal cancer
This trial tests a new combination of radiation, chemotherapy (NALIRIF), and an immunotherapy drug (PD-1 antibody) for rectal cancer that has come back in the pelvis. The goal is to see if this approach can help control the cancer better.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT05965531RecruitingPhase 2
TAS-102 plus radiation before surgery for rectal cancer
This trial studies whether adding TAS-102 (a chemotherapy medicine) to radiation given before treatment improves outcomes for certain locally advanced rectal cancers. It may help by trying to shrink the tumor before the next steps of care.
Guangzhou, GuangdongAges 18–70
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Common questions
- Are there clinical trials for rectal cancer, radiotherapy?
- Yes. Clin2 currently lists 209 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.