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
- NCT04245683Recruiting
Testing non-surgical treatment for newly diagnosed rectal cancer
This study looks at whether it’s practical and safe to treat certain rectal cancers without surgery. You may be offered non-surgical (“neoadjuvant”) treatment and close follow-up to see how well it works in a rural setting.
Cooperstown, New YorkAges 18 years+ - NCT03908684Recruiting
Ultrasound tests to predict early response to prostate and head/neck radiation
This study uses special ultrasound imaging to look for early signs of how well radiation treatment is working in prostate, rectum, and head/neck cancers. It may help doctors spot response sooner and adjust care earlier if needed.
Toronto, OntarioAges Any age - NCT07132463RecruitingPhase 3
Study of extra treatment for ultra-low rectal cancer
This trial tests if adding an immunotherapy drug (tislelizumab) to standard chemoradiation and chemotherapy helps patients with ultra-low rectal cancer. It is for patients whose cancer has not spread and can be removed with surgery.
ShanghaiAges 18–75 - NCT07070622RecruitingPhase 3
Organ preservation for low rectal cancer after chemo
This trial tests whether chemotherapy alone can help avoid surgery for low rectal cancer. It is for people with tumors close to the anus that haven't spread far, and who haven't had prior cancer treatment.
Chengdu, SichuanAges 18–80 - NCT06767007RecruitingPhase 2
Radiation plus immunotherapy for recurrent rectal cancer
This trial studies a combination of SBRT (a precise kind of radiation) and an immunotherapy drug (PD-1 antibody) for people whose rectal cancer has come back in the pelvis and cannot be removed by surgery. The goal is to see if this treatment can shrink the tumor or stop it from growing.
Guangzhou, GuangdongAges 18–75 - NCT07505472RecruitingPhase 2/Phase 3
Short radiation plus chemo and immunotherapy for high-risk rectal cancer
This trial tests a new approach for people with locally advanced rectal cancer that has high-risk features. It combines short-course radiation with chemotherapy (CapeOX) and the immunotherapy drug toripalimab, with or without another drug called surufatinib, before surgery. The goal is to see if adding these drugs helps shrink the tumor and improve outcomes.
Changchun, JilinAges 18–75 - NCT05772923Recruiting
Testing rectal cancer organ-preservation after radiation
This trial compares two ways to preserve the rectum/avoid major surgery after radiation: a focused contact x-ray treatment versus waiting longer and then removing only a small area if needed. It may help some people keep more normal bowel function while still controlling the cancer.
Nijmegen, GelderlandAges 18 years+ - NCT07020247RecruitingPhase 3
Personalized radiation plus chemo with or without immunotherapy for rectal cancer
This trial tests adding immunotherapy to standard radiation and chemotherapy for patients with locally advanced rectal cancer. The goal is to see if a personalized approach improves outcomes while sparing more normal tissue.
Chengdu, SichuanAges 18 years+ - NCT06222255Recruiting
Transanal irrigation for sleep issues after rectal cancer surgery
This trial tests if a special irrigation technique can improve sleep problems caused by low anterior resection syndrome (LARS) after rectal cancer surgery. It may help people who have ongoing bowel symptoms that disrupt sleep.
Seoul, Jongro-guAges 19–80 - NCT07605611Recruiting
Somatostatin and Diet vs. Stoma After Rectal Cancer Surgery
This trial tests whether using a medication called somatostatin plus a clear liquid diet can safely prevent serious complications after surgery to remove rectal cancer, without needing a temporary opening in the abdomen (stoma). You'll be randomly assigned to receive either somatostatin with diet changes or a stoma, depending on your individual risk factors.
Ezhou, HubeiAges 18–75 - NCT07104604RecruitingPhase 2
New combo before surgery for low rectal cancer
This trial tests a new combination of treatments (radiation, immunotherapy, and two chemotherapy drugs) given before surgery for people with a specific type of locally advanced rectal cancer that is close to the anus. The goal is to see if this approach is safe and effective.
Shantou, GuangdongAges 18–75 - NCT07674732RecruitingPhase 2
Shorter radiation with immunotherapy for rectal cancer
This trial tests a shorter course of radiation followed by a combination of chemotherapy, immunotherapy, and a targeted drug (bevacizumab) for locally advanced rectal cancer that is mismatch repair proficient (pMMR) or microsatellite stable (MSS). The goal is to see if this approach can shrink the tumor enough for surgery while avoiding more extensive radiation.
Guangzhou, GuangdongAges 18–75 - NCT07419490Recruiting
Moving ovaries and uterus to preserve fertility during pelvic radiation
This trial moves the ovaries and uterus higher in the belly before pelvic radiation to protect them, so patients may still be able to have children later. It is for women aged 18-40 with pelvic cancers that require radiation.
Tampa, FloridaAges 1.5 years–3.3 years - NCT07561060RecruitingPhase 1/Phase 2
Immunotherapy plus chemotherapy for early rectal cancer
This trial tests whether adding an immunotherapy drug called tislelizumab to standard chemotherapy and radiation can help patients with early-stage rectal cancer (cancer within 3 cm of the opening of the rectum) avoid surgery or improve surgery outcomes. The goal is to see if this combination is safe and effective.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT07260526Recruiting
Chemo and radiation for low rectal cancer, aiming to avoid surgery
This trial tests whether people with early- to intermediate-stage low rectal cancer can avoid surgery if their tumor responds well to a full course of chemotherapy and radiation. It starts with brief chemotherapy, then adjusts treatment based on how much the tumor shrinks.
Chengdu, SichuanAges 18–80 - NCT06234007RecruitingPhase 2
Short radiation plus combo therapy for advanced rectal cancer
This trial tests a short course of radiation therapy followed by a combination of three drugs (fruquintinib, adebrelimab, and CAPOX chemotherapy) before surgery for people with locally advanced rectal cancer. The goal is to see if this approach can shrink the tumor and improve outcomes.
WuhanAges 18–75 - NCT03671252RecruitingPhase 3
Chemotherapy before surgery for rectal cancer vs chemo with radiation
This Phase 3 trial compares two treatment plans given before rectal surgery. It tests whether stronger chemotherapy alone works better than chemotherapy pills plus long-term radiation to improve outcomes for locally advanced rectal cancer.
Guangzhou, GuangdongAges 18–75 - NCT07448077RecruitingPhase 2
Short radiation with immunotherapy for rectal cancer
This trial tests a combination of short-course radiation, chemotherapy, and an immunotherapy drug (Enlonstobart) for patients with a specific type of rectal cancer called pMMR. It aims to see if this approach can shrink tumors before surgery and improve outcomes.
Shijiazhuang, HebeiAges 18 years+ - NCT03125343Recruiting
Watch-and-wait after rectal cancer treatment for select patients
This study looks at whether some people with rectal cancer can safely avoid immediate surgery after (chemo)radiation, instead closely monitoring their response. It may help some patients reduce treatment burden if the cancer fully responds.
GothenburgAges 18 years+ - NCT04808323RecruitingPhase 1
MRI-guided radiation to help preserve organs in rectal cancer
This Phase 1 study tests a radiation treatment approach guided by MRI scans to help keep nearby organs functioning while treating rectal cancer. It is designed to find a safe, effective way to target the tumor and adjust treatment during the course of therapy.
Milwaukee, WisconsinAges 18 years+ - NCT05984576Recruiting
Chemo and radiation for recurrent rectal cancer after prior pelvic radiation
This study looks at combining total neoadjuvant therapy (chemotherapy and radiation) for rectal cancer that has come back in the pelvis after earlier radiation. It aims to see if this treatment approach can help control the disease and improve outcomes in patients with limited spread that can potentially be removed or treated.
RomeAges 18 years+ - NCT06762405RecruitingPhase 3
Testing dostarlimab with short radiation for MSI rectal cancer
This trial tests a new approach: giving the immunotherapy drug dostarlimab along with a short course of radiation before surgery, with the goal of avoiding surgery in many patients. It is for people with a specific type of rectal cancer (MSI-H or dMMR) that has not spread to other organs.
DijonAges 18 years+ - NCT04815694Recruiting
MRI-guided radiotherapy for rectal cancer
This trial tests whether using MRI scans to guide radiotherapy can improve treatment for people with a certain type of rectal cancer. It focuses on patients whose tumors have not spread to other parts of the body and who have specific tumor features seen on MRI.
Roma, RomaAges 18 years+ - NCT06157463Recruiting
FAPI imaging for newly diagnosed rectal cancer
This trial tests a new imaging agent called 68Ga-FAPI to see how well it finds rectal cancer and guides treatment. It's for people with new stage II or III rectal cancer who are about to start neoadjuvant therapy (treatment before surgery).
TaoyuanAges 18 years+
Hear when a new Rectal Cancer, Radiotherapy trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
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.