Microbiome and Colorectal Cancer Recurrence

Anastomotic leak is associated with higher rates of tumor recurrence after colorectal cancer surgery. However, the mechanisms responsible remain unknown. The aim of this study is to identify associations between the peritoneal microbiome and recurrence in colorectal cancer patients with postoperative anastomotic leak. This is a single-center retrospective study of patients undergoing colorectal cancer surgery complicated with anastomotic leak between 2004 and 2012. Samples of peritoneal fluid were collected either through percutaneous drainage or reoperation, and microbiome was analyzed using whole genome shotgun. Oncological outcomes are registered. Associations between peritoneal microbiome and tumor recurrence are investigated.

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Key information

Conditions

Colorectal Cancer Recurrent Anastomotic Leak Colonic Diseases Colorectal Neoplasms Digestive System Diseases Digestive System Neoplasms Disease Attributes Gastrointestinal Diseases Gastrointestinal Neoplasms Intestinal Diseases Intestinal Neoplasms Neoplasms Neoplasms by Site Pathologic Processes Pathological Conditions, Signs and Symptoms Postoperative Complications Rectal Diseases Recurrence

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Colorectal cancer patients operated on for cure and complicated with anastomotic leak.

Exclusion criteria

Non-curative resection.
Urgent surgery.

Treatment and study plan

Primary outcomes

Recurrence

Time frame: 5 years

Colorectal cancer recurrence after surgery

Sponsors and collaborators

Lead sponsor

Hospital del Mar

Other

Registry information

Official study title

The Role of Microbiome in Recurrence After Colorectal Cancer Surgery With Postoperative Organ/Space Surgical Site Infection

Important dates

Study start: 2004
Primary completion: 2024
Study completion: 2024
First posted: Jul 9, 2025
Registry last updated: Jul 9, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed