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ClinicalTrials.gov public records Last synced Sep 30, 2026, 4:41 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–35 of 35 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Biopsies during colonoscopy Clear all
Active, not recruiting No phase listed Observational Accepts healthy volunteers

A Study of the Possible Effects of Medication on Young Onset Colorectal Cancer (YOCRC)

NCT05568420
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Not listed
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years to 49 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 30, 2026, 4:41 AM 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 Sep 30, 2026, 4:41 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Comparative Efficacy of Water & Indigo Carmine vs. Water or Air Method on Adenoma Detection Rate (ADR) - a Randomized Controlled Trial (RCT)

NCT01607255
View directory record Official record
Conditions
Colorectal Neoplasms
Interventions
Indigo carmine, water (exchange) method, water (exchange) plus dye method, air method
Drug · Procedure
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
45 Years to 75 Years
Enrollment
480 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jan 15, 2019 · Synced Sep 30, 2026, 4:41 AM EDT
Terminated No phase listed Observational

Antiretroviral Localization in Gut-Associated Lymphoid Tissue and Lower Female Genital Tract Tissue of HIV+ Subjects

NCT02641444
View directory record Official record
Conditions
HIV
Interventions
Blood plasma collection, Cervical and Vaginal Biopsy, Colonoscopy with Ileal and Rectal Biopsy
Procedure
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 17, 2018 · Synced Sep 30, 2026, 4:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Enteric Neural Precursor Cells (ENPC) in the Human Gut

NCT04880538
View directory record Official record
Conditions
Gastrointestinal Dysmotility
Interventions
Endoscopic procedure
Procedure
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 15, 2024 · Synced Sep 30, 2026, 4:41 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

The Effect of PPI Therapy on Weight, Gut Microbiome, and Expression of GPR41 and GPR43

NCT02457104
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Obesity
Interventions
Colonoscopy, Weight and diet questionnaire
Procedure · Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
40 Years to 59 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 18, 2021 · Synced Sep 30, 2026, 4:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Screening and Risk Factors of Colon Neoplasia

NCT01647776
View directory record Official record
Conditions
Colon Cancer
Interventions
Stool DNA Test, biopsies of rectal and colon mucosa, Questionnaires
Other · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
30 Years to 80 Years
Enrollment
3,315 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Sep 30, 2026, 4:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Experimental Device to Improve Colonoscopy

NCT00719641
View directory record Official record
Conditions
Colonoscopy, Looping, Prevent Looping, Colon Cancer Screening
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
40 Years to 80 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Sep 30, 2026, 4:41 AM EDT
Completed Phase 2 Interventional Results available

Fecal Microbiota Transplant (FMT) in Melanoma Patients

NCT03341143
View directory record Official record
Conditions
Melanoma
Interventions
Fecal Microbiota Transplant with Pembrolizumab
Drug
Lead sponsor
Zarour, Hassane, MD
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2024 · Synced Sep 30, 2026, 4:41 AM EDT
Recruiting No phase listed Observational

Colonic Tissue Biopsy Detection of Phosphorylated Alpha-synuclein for Parkinson's Diagnosis or REM Sleep Behavior Disorder

NCT07217054
View directory record Official record
Conditions
PARKINSON DISEASE (Disorder), Parkinson, Parkinson s Disease, Parkinson Disease
Interventions
Not listed
Lead sponsor
CND Life Sciences
Other
Eligibility
40 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Branford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 30, 2026, 4:41 AM EDT
Completed No phase listed Observational

The Role of the Pregnane X Receptor (PXR) in Indole Signaling and Intestinal Permeability in Inflammatory Bowel Disease

NCT04089501
View directory record Official record
Conditions
Inflammatory Bowel Diseases
Interventions
Stool collection, Biopsy collection
Diagnostic Test
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
Up to 65 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 16, 2019 · Synced Sep 30, 2026, 4:41 AM EDT