Can extra chemo before surgery beat standard rectal cancer care?
NCT ID NCT05496491
First seen Aug 26, 2026 · Last updated Aug 27, 2026 · Updated 1 time
Summary
This trial tests whether giving chemotherapy after chemoradiation but before surgery improves outcomes for people with locally advanced rectal cancer. Participants are randomly assigned to either the standard approach (chemoradiation, then surgery, then chemotherapy) or the experimental approach (chemoradiation, then consolidation chemotherapy, then surgery). The study tracks disease-free survival, complete tumor response, and postoperative complications to see if the new sequence is better.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Neoadjuvant chemoradiotherapy (radiation plus capecitabine) followed by consolidation chemotherapy (CAPOX or FOLFOX)
- What this could lead to
- If successful, this approach could improve disease-free survival and increase the chance of a complete response before surgery, potentially reducing the need for adjuvant chemotherapy.
- What could go wrong
- This is a small, early-stage trial, and results may not apply to all patients. Chemoradiotherapy and chemotherapy carry risks like fatigue, nausea, and nerve damage.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 84 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Aug 2022
- Expected to finish
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Aug 2029
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 80 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Histologically confirmed rectal adenocarcinoma * cT3, cT4, threatened CRM / MRF, EMVI (+), ≥N1 * Multidisciplinary tumor board decision for neoadjuvant treatment * Tumor distance from the anal verge \<15 cm based on endoscopy or magnetic resonance imaging * Patient 18 to 80 years old * General health condition status WHO 0-1 * Absence of co-morbidities that may affect treatment * Neutrophils \>1,500 / mm3, platelets \>100,000 / mm3, hemoglobin\> 10 g / dL, normal creatinine, and creatinine clearance\> 50 mL / min * Signed informed consent of the patient Exclusion Criteria: * Distant metastases * Non-resectable cancer * Contraindications for the administration of chemotherapy * Previous pelvic radiotherapy or chemotherapy * History of inflammatory bowel disorders * History of angina, acute myocardial infarction or heart failure * Active sepsis or systemic infection * Untreated physical and mental disability * Synchronous malignancy * Pregnancy or breast-feeding * Lack of compliance with the protocol process * Non-granting of signed informed consent
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Department of Surgery, University Hospital of Larissa
RECRUITINGLarissa, 41110, Greece
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- Can a shorter radiation course spare the rectum in rectal cancer?