Comparing bowel preparation methods for colon cancer surgery outcomes

Short-term Outcomes of Full Bowel Preparation (MBP+OA) for Colon Resections for Cancer Versus no Bowel Preparation

Not applicable Interventional N.N. Petrov National Medical Research Center of Oncology · NCT05546892

This study is testing whether getting your bowels ready with a special prep before colon cancer surgery can lower the chances of leaks in the surgery compared to not doing any prep at all.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment586 (estimated)
Ages18 Years and up
SexAll
SponsorN.N. Petrov National Medical Research Center of Oncology Academic / other
Locations1 site (Saint Petersburg)
Trial IDNCT05546892 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate the short-term outcomes of colon cancer resections performed after full bowel preparation, which includes mechanical bowel preparation and oral antibiotics, compared to surgeries without any bowel preparation. Eligible patients will be randomly assigned to either the full bowel preparation group or the no preparation group in a 1:1 ratio. The primary outcome measure is the rate of anastomotic leaks within 30 days post-surgery, with a target reduction from 8% to 3%. A total of 586 patients will be enrolled to ensure adequate statistical power for the analysis, following the intent-to-treat principle.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with histologically confirmed adenocarcinoma of the colon and indications for surgical resection.

Not a fit: Patients with medical contraindications for surgery, those who have used antibiotics recently, or those with other malignancies may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved surgical outcomes and reduced complications for patients undergoing colon cancer resections.

How similar studies have performed: Previous studies have shown varying results regarding bowel preparation methods, making this approach both relevant and necessary for further investigation.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* histologically confirmed adenocarcinoma of the colon (caecum, ascending, transverse, descending, sigmoid)
* clinical stage T1-4aN0-2M0-1 (distant metastases must be resectable)
* indications for surgical colonic resection
* ECOG status 0-2
* At least 18 years of age
* Written informed consent

Exclusion Criteria:

* Medical or psychiatric conditions that compromise the patient's ability to give informed consent or comply with the study protocol
* Pregnancy or breast feeding
* Medical contraindications for surgical treatment
* Any use of antibiotics 30 days prior to inclusion
* Functioning stoma
* Contraindications for use of MBP or OA drugs or their components
* Indications for mandatory MBP (planned intraoperative colonoscopy etc)
* Indications for obstructive resection
* Acute bowel obstruction, bleeding or perforation
* Other malignancies not in remission

Where this trial is running

Saint Petersburg

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Colon Cancercolon cancerMBPbowel preparationoral antibiotics
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.