The Relationship Between Postoperative Changes of Oral and Intestinal Flora and Prognosis

Postoperative Oral and Intestinal Flora Changes in Patients With Colorectal Cancer and the Relationship Between These Changes and Prognosis

Specific oral microbiome has been found to contribute to the development of colorectal cancer. We speculate that specific oral microbiota related to colorectal cancer relapse after curative treatment. This study aim to discover if any difference of oral microbiota exist in patients who suffer from cancer relapse compared with patients who do not. Finally develop patient-centred programmes of surveillance protocols base on microbiota analysis.

Study Overview

• Status: Unknown
• Conditions: Colorectal Cancer; Gut Microbiota; Oral Microbiota

Detailed Description

Colorectal cancer is a major cause of cancerrelated deaths and the third most commonly diagnosed cancer worldwide.Current estimates indicate that 20-30% of those who undergo treatment will experience recurrence and 35% of all patients will die within 5 years.

The human colon plays host to a diverse and metabolically complex community of microorganisms. While the specific oral microbiome has been found to contribute to the development of colorectal cancer. Investigators speculate that specific oral microbiota related to colorectal cancer relapse after curative treatment.

Patients are routinely offered surveillance in order to detect disease recurrence at an early, asymptomatic stage, with the intention of improving survival. Nevertheless, controversy continues to surround the optimal surveillance protocols. Investigators aim to discover if any difference of oral microbiota is exist in patients who suffer from relapse compared with patients who do not.

Future surveillance after colorectal cancer treatment should focus on risk-stratification. Finally investigators will develop patient-centred programmes of surveillance protocols base on microbiota analysis.

• Study Type: Observational
• Enrollment (Anticipated): 100

Contacts and Locations

Study Locations

• China
  • Heilongjiang
    • Harbin, Heilongjiang, China, 150001
      • Recruiting
      • Yunwei Wei
      • Contact: Yunwei Wei; Email: hydwyw11@hotmail.com

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 80 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Participants were included according to the inclusion and exclusion criteria. Participants underwent an exhaustive colorectal cancer surgical resection in the First Affiliated Hospital of Harbin Medical University from September 1, 2017 to April 1, 2019. Participants did not use antibiotics and probiotics 3 mouth before samples collection.

Description

Inclusion Criteria:

• Requirements of informed consent and assent of participant, parent or legal guardian as applicable
• Patients who underwent exhaustive colorectal cancer surgical resection and accept colonoscopy
• Patients between the age of 35 and 75 years old without considering sex
• Patients with BMI= 18.5-23.9
• Participants can follow the visit plan

Exclusion Criteria:

• Patients with colorectal cancer with distant metastasis
• Chronic renal diseases and hepatic cirrhosis
• Chronic ischemic heart disease with unstable angina, chronic heart failure at class III or IV and acute myocardial infarction in the last 6 months
• Individuals with a history of Chronic diarrhea
• Individuals with a history of Diabetes mellitus
• Individuals with a history of Hypertension
• Individuals with a history of autoimmune diseases
• Use of antibiotics and probiotics 3 mouth before samples collection
• Individuals with a history of abdominal operation due to any reason
• Individuals with any history of cancer other than colorectal cancer
• Individuals with Inflammatory bowel disease

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
Remission; Patients who get remission after curative surgery
Relapse; Patients who suffered colorectal cancer or adenoma relapse after curative surgery

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Colorectal cancer or adenoma recurred	Use colonoscopy to check for recurrence of colorectal cancer	12 months after surgery

Collaborators and Investigators

• Sponsor: First Affiliated Hospital of Harbin Medical University
• Investigators: Study Director: Yunwei Wei, First Affiliated Hospital of Harbin Medical University

Study record dates

Study Major Dates

• Study Start (Actual): November 1, 2017
• Primary Completion (Anticipated): November 1, 2019
• Study Completion (Anticipated): March 1, 2021

Study Registration Dates

• First Submitted: September 10, 2018
• First Submitted That Met QC Criteria: September 10, 2018
• First Posted (Actual): September 12, 2018

Study Record Updates

• Last Update Posted (Actual): September 21, 2018
• Last Update Submitted That Met QC Criteria: September 19, 2018
• Last Verified: September 1, 2018

More Information

Terms related to this study

• Keywords: colorectal cancer; recurrence; microbiota
• Additional Relevant MeSH Terms: Digestive System Diseases; Neoplasms; Neoplasms by Site; Gastrointestinal Neoplasms; Digestive System Neoplasms; Gastrointestinal Diseases; Colonic Diseases; Intestinal Diseases; Intestinal Neoplasms; Rectal Diseases; Colorectal Neoplasms
• Other Study ID Numbers: Yunwei Wei 2018-09-04

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No