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ClinicalTrials.gov public records Last synced Oct 18, 2026, 4:59 AM EDT

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Showing 1–24 of 29 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Flexible sigmoidoscopy Clear all
Active, not recruiting Not applicable Interventional Results available

Screening for Colorectal Cancer in Older Patients (PLCO Screening Trial)

NCT01696981
View directory record Official record
Conditions
Colon Carcinoma, Rectal Carcinoma
Interventions
Screening Questionnaire Administration, Sigmoidoscopy
Other · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
55 Years to 74 Years
Enrollment
154,900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1993 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 18, 2026, 4:59 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Biomarkers for Intestinal Permeability in Patients With Constipation

NCT02246647
View directory record Official record
Conditions
Intestinal Diseases, Irritable Bowel Syndrome, Constipation
Interventions
Permeability measurement, Esophagogastroduodenoscopy, Flexible sigmoidoscopy
Diagnostic Test · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Early FMT for C.Difficile

NCT02465463
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Fecal microbiota transplant (FMT), flexible sigmoidoscopy
Procedure · Device
Lead sponsor
Emory University
Other
Eligibility
18 Years to 79 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 31, 2018 · Synced Oct 18, 2026, 4:59 AM EDT
Withdrawn Not applicable Interventional

Feasibility Study to Develop Sentinel Lymph Node Mapping in Rectal Cancer Patients

NCT02112240
View directory record Official record
Conditions
Rectal Cancer
Interventions
Intraoperative Mobile Gamma Camera imaging, Endoscopic injection of 99mTc-sulfur colloid, Endoscopic injections of Spot, Preoperative flexible sigmoidoscopy, SPECT/CT
Other · Drug · Procedure + 1 more
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 15, 2016 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Not applicable Interventional

Plant Exosomes +/- Curcumin to Abrogate Symptoms of Inflammatory Bowel Disease

NCT04879810
View directory record Official record
Conditions
Irritable Bowel Disease
Interventions
Sigmoidoscopy and biopsy, blood work
Procedure
Lead sponsor
University of Louisville
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Nov 3, 2022 · Synced Oct 18, 2026, 4:59 AM EDT
Terminated No phase listed Observational

Mechanisms of Idelalisib-Associated Diarrhea in Patients With Relapsed Chronic Lymphocytic Leukemia, Indolent Non-hodgkin Lymphoma, or Small Lymphocytic Lymphoma

NCT02928510
View directory record Official record
Conditions
Absence of Signs or Symptoms, B-Cell Non-Hodgkin Lymphoma, Digestive System Signs and Symptoms, Indolent Adult Non-Hodgkin Lymphoma, Recurrent B-Cell Non-Hodgkin Lymphoma, Recurrent Chronic Lymphocytic Leukemia, Recurrent Indolent Adult Non-Hodgkin Lymphoma, Recurrent Small Lymphocytic Lymphoma
Interventions
Biospecimen Collection, Colonoscopy, Colposcopic Biopsy, Idelalisib, Laboratory Biomarker Analysis, Pharmacological Study, Physical Examination, Sigmoidoscopy
Procedure · Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 14, 2021 · Synced Oct 18, 2026, 4:59 AM EDT
Recruiting Phase 2 Interventional

Study of Novel Therapeutics for Acute Remedy of Colitis

NCT06420492
View directory record Official record
Conditions
Ulcerative Colitis, Ulcerative Colitis Chronic Moderate, Ulcerative Colitis Chronic Severe
Interventions
BRS201
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 20, 2025 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Phase 1Phase 2 Interventional Results available

PRevention Using EPA Against coloREctal Cancer

NCT04216251
View directory record Official record
Conditions
Colorectal Adenoma, Colorectal Cancer, Endoscopic Surgery, Eicosapentaenoic Acid, Gastrointestinal Microbiome
Interventions
AMR101
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 3, 2024 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Financial Incentives to Increase Colorectal Cancer Screening in Priority Populations

NCT03080701
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Auto Mailing Plus Money, Auto Mailing Plus Lottery
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
50 Years to 75 Years
Enrollment
898 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Nov 5, 2019 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Phase 2 Interventional Results available

Examining the Efficacy of Fecal Microbiota Transplantation (FMT) and Dietary Fiber in Patients With Ulcerative Colitis

NCT03998488
View directory record Official record
Conditions
Ulcerative Colitis, Inflammatory Bowel Diseases
Interventions
Fecal Microbiota Transplantation, Psyllium Husk Powder
Drug · Dietary Supplement
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 89 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 3, 2025 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Study of Using Computerized Education to Increase Patients' Confidence in Their Ability to Be Screened for Colon Cancer

NCT00273585
View directory record Official record
Conditions
Colorectal Cancer Screening
Interventions
Personally-tailored educational software program
Device
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 8, 2006 · Synced Oct 18, 2026, 4:59 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Epidemiology and Pathophysiology of Post-Infectious Functional GI Disorders

NCT03266068
View directory record Official record
Conditions
Campylobacter Infections, Irritable Bowel Syndrome
Interventions
DNA Analysis of Blood Sample, Flexible sigmoidoscopy with colonic biopsies, Small bowel and colonic gastrointestinal permeability, Stool sample analysis
Genetic · Procedure · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 20, 2022 · Synced Oct 18, 2026, 4:59 AM EDT
Active, not recruiting Not applicable Interventional

Microbiome and Rectal Cancer

NCT04223102
View directory record Official record
Conditions
Rectal Cancer, Locally Advanced Malignant Neoplasm
Interventions
Tissue collection
Procedure
Lead sponsor
University of South Florida
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
3
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 2, 2023 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Impact of Circadian Misalignment on Colonic Barrier Homeostasis in Ulcerative Colitis

NCT05180279
View directory record Official record
Conditions
Ulcerative Colitis
Interventions
7-day sleep lab
Behavioral
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 19, 2025 · Synced Oct 18, 2026, 4:59 AM EDT
Recruiting No phase listed Observational

Collecting Blood and Stool Samples to Detect Colorectal Cancer or Advanced Neoplasia in Lynch Syndrome Patients

NCT05410977
View directory record Official record
Conditions
Colorectal Carcinoma, Lynch Syndrome
Interventions
Biospecimen Collection, Electronic Health Record Review
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
950 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
9
States / cities
Scottsdale, Arizona • San Francisco, California • Aurora, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Oct 18, 2026, 4:59 AM EDT
Terminated No phase listed Observational

Non-Invasive Prediction of Colorectal Neoplasia

NCT01815463
View directory record Official record
Conditions
Colonic Polyps, Polyposis Coli, Colorectal Cancer
Interventions
Not listed
Lead sponsor
Corporal Michael J. Crescenz VA Medical Center
Federal
Eligibility
18 Years to 85 Years
Enrollment
2,282 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 27, 2016 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigation of Cecal Intubation Rates and Pain Levels Between Water Exchange and Air Insufflation Flexible Sigmoidoscopy

NCT03209349
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Water Exchange Sigmoidoscopy, Air Insufflation Sigmoidoscopy
Procedure
Lead sponsor
Kelowna Gastroenterology Associates
Other
Eligibility
50 Years to 74 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
North Hills, California
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Oct 18, 2026, 4:59 AM EDT
Active, not recruiting Not applicable Interventional

Abnormal Food Timing and Circadian Dyssynchrony in Alcohol Induced Colon Carcinogenesis

NCT03955510
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Right time eating, Delayed time eating, Sigmoidoscopy, Optional 24h circadian assessment in the Biological Rhythms lab, Alcohol
Other · Procedure
Lead sponsor
Rush University Medical Center
Other
Eligibility
21 Years to 75 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Oct 18, 2026, 4:59 AM EDT
Not listed Not applicable Interventional

Sentinel Lymph Node Mapping in Rectal Cancer

NCT02869152
View directory record Official record
Conditions
Rectal Neoplasms
Interventions
Endoscopic injection of 99mTc-sulfur colloid, Endoscopic injection of ICG, Endoscopic injection of Spot, Flexible sigmoidoscopy, Endoscopic NIR imaging and gamma probe, Dissection of sentinel lymph node(s)
Other · Procedure
Lead sponsor
University of Virginia
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2016
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 31, 2016 · Synced Oct 18, 2026, 4:59 AM EDT
Completed No phase listed Observational

Partial Wave Spectroscopic Detection of Colon Cancer Risk

NCT01095432
View directory record Official record
Conditions
Ulcerative Colitis, Colon Cancer
Interventions
PWS Testing
Procedure
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 23, 2016 · Synced Oct 18, 2026, 4:59 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Study of Male Rectal Samples in Preparation for Future Rectal Microbicide Trials

NCT00075062
View directory record Official record
Conditions
HIV Infections, HIV Seronegativity
Interventions
Flexible Sigmoidoscopy, Rectal Biopsy
Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older · Male only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 21, 2008 · Synced Oct 18, 2026, 4:59 AM EDT
Active, not recruiting No phase listed Observational

The Colonic Microbiome and Mucosal Immunity in Inflammatory Bowel Disease and Ankylosing Spondylitis

NCT02389075
View directory record Official record
Conditions
Inflammatory Bowel Diseases (IBD), Ankylosing Spondylitis (AS)
Interventions
Pinch biopsies, Flexible sigmoidoscopy
Procedure
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 70 Years
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Oct 18, 2026, 4:59 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Relationship of Tenofovir With HIV-1 Suppression in ex Vivo Tissue in Adolescents

NCT02134431
View directory record Official record
Conditions
Human Immunodeficiency Virus
Interventions
flexible sigmoidoscopy or colonoscopy with biopsies
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
10 Years to 21 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Oct 18, 2026, 4:59 AM EDT
Completed Not applicable Interventional

Korean CRC Screening Study PT13599

NCT04478110
View directory record Official record
Conditions
Colorectal Cancer
Interventions
interactive group education, navigation services and engagement of health care providers for referrals, and linkage to care., Education Session on General Health
Behavioral
Lead sponsor
Temple University
Other
Eligibility
50 Years to 85 Years
Enrollment
925 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 13, 2023 · Synced Oct 18, 2026, 4:59 AM EDT