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ClinicalTrials.gov public records Last synced Oct 16, 2026, 7:48 PM EDT

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Showing 1–24 of 52 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM EDT
Active, not recruiting Phase 3 Interventional

Nivolumab After Combined Modality Therapy in Treating Patients With High Risk Stage II-IIIB Anal Cancer

NCT03233711
View directory record Official record
Conditions
Anal Basaloid Carcinoma, Anal Canal Cloacogenic Carcinoma, Anal Margin Squamous Cell Carcinoma, Stage IIB Anal Cancer AJCC v8, Stage III Anal Cancer AJCC v8
Interventions
Biopsy Procedure, Biospecimen Collection, Colonoscopy, Computed Tomography, Digital Rectal Examination, High Resolution Anoscopy, Magnetic Resonance Imaging, Nivolumab, Patient Observation, Proctoscopy, Sigmoidoscopy, X-Ray Imaging
Procedure · Biological · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
887
States / cities
Birmingham, Alabama • Anchorage, Alaska • Fairbanks, Alaska + 568 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2026 · Synced Oct 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Increasing Colorectal Cancer Screening in African Americans

NCT00893295
View directory record Official record
Conditions
Colorectal Cancer
Interventions
informational intervention, medical chart review, screening questionnaire administration, study of socioeconomic and demographic variables, barium enema injection, colon imaging study, screening colonoscopy, sigmoidoscopy
Other · Procedure
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
50 Years to 79 Years
Enrollment
896 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 18, 2013 · Synced Oct 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Analyzing IBS to Identify Biomarkers and Microbiome Signatures

NCT02419963
View directory record Official record
Conditions
Diarrhoea Predominant Irritable Bowel Syndrome, IBS
Interventions
endoscopy for tissue biopsy, Blood Sample, Stool Sample
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 7, 2017 · Synced Oct 16, 2026, 7:48 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Microbiome-Mediated Gut Dysfunction in Non-Alcoholic Fatty Liver Disease

NCT05209100
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease
Interventions
Sigmoidoscopy
Procedure
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
35 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Apr 3, 2026 · Synced Oct 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM EDT
Terminated Phase 2 Interventional Results available

Cetuximab, 5-FU and Radiation as Neoadjuvant Therapy for Patients With Locally Advanced Rectal Cancer

NCT00611858
View directory record Official record
Conditions
Rectal Cancer
Interventions
Cetuximab, 5-Fluorouracil, Radiation
Drug · Radiation
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
4
States / cities
Boston, Massachusetts • Weymouth, Massachusetts • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Oct 16, 2026, 7:48 PM EDT
Completed Phase 1 Interventional

Body Compartment Pharmacokinetics of Anti- Retroviral Agents That May be Used for Future HIV Post- Exposure Prophylaxis.

NCT03472963
View directory record Official record
Conditions
HIV Infections
Interventions
Single dose of Genvoya® and a single 800 mg dose of Darunavir®
Drug
Lead sponsor
Emory University
Other
Eligibility
18 Years to 49 Years · Male only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 28, 2020 · Synced Oct 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM 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 16, 2026, 7:48 PM EDT
Active, not recruiting Phase 2Phase 3 Interventional

Testing the Addition of an Anti-Cancer Drug, Irinotecan, to the Standard Chemotherapy Treatment (FOLFOX) After Long-Course Radiation Therapy for Advanced-Stage Rectal Cancers to Improve the Rate of Complete Response and Long-Term Rates of Organ Preservation and Continuing Response

NCT05610163
View directory record Official record
Conditions
Stage II Rectal Cancer AJCC v8, Stage III Rectal Cancer AJCC v8, Locally Advanced Rectal Adenocarcinoma
Interventions
Capecitabine, 5-fluorouracil, Leucovorin calcium, Irinotecan, Oxaliplatin, Long Course Chemoradiotherapy, Computed Tomography, Magnetic Resonance Imaging, Sigmoidoscopy, biopsy
Drug · Radiation · Procedure
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
760 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2037
U.S. locations
679
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 483 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Oct 16, 2026, 7:48 PM EDT