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ClinicalTrials.gov public records Last synced Oct 25, 2026, 10:24 AM EDT

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Showing 1–24 of 104 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Rectal Polyp Clear all
Completed No phase listed Observational

Collecting Information From Patients and Family Members With Hereditary Colorectal Cancer Syndromes or Who Are at High Risk of Developing Colorectal Cancer

NCT00675636
View directory record Official record
Conditions
Colorectal Cancer, Hereditary Non-polyposis Colon Cancer, Precancerous Condition
Interventions
study of socioeconomic and demographic variables, evaluation of cancer risk factors, study of high risk factors
Other · Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
Up to 100 Years
Enrollment
730 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
3
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Inspection During Insertion Improve Adenoma Yields During Colonoscopy?

NCT01035775
View directory record Official record
Conditions
Colorectal Cancer, Colorectal Polyps
Interventions
Inspection during insertion, Inspection during withdrawal
Procedure
Lead sponsor
Indiana University
Other
Eligibility
50 Years and older
Enrollment
340 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 16, 2018 · Synced Oct 25, 2026, 10:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biological, Genetic, and Lifestyle Risk Factors for Developing Colorectal Adenomas or Polyps in Participants Undergoing Colonoscopy

NCT00625066
View directory record Official record
Conditions
Colorectal Cancer, Precancerous Condition
Interventions
biologic sample preservation procedure, cytology specimen collection procedure, medical chart review, questionnaire administration, survey administration, biopsy, evaluation of cancer risk factors, screening colonoscopy
Other · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
40 Years to 75 Years
Enrollment
8,108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2025
U.S. locations
4
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Oct 25, 2026, 10:24 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Improving Colonoscopy Surveillance for Patients With High Risk Colon Polyps

NCT06376565
View directory record Official record
Conditions
Colorectal Carcinoma
Interventions
Best Practice, Communication Intervention, Interview
Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
21 Years and older
Enrollment
1,680 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 14, 2025 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Phase 1 Interventional

Study of KCC Peptide Application in the Colon

NCT02156557
View directory record Official record
Conditions
Colon Polyps, Colorectal Cancer, Inflammatory Bowel Disease (IBD)
Interventions
Colon KCC Heptapeptide
Biological
Lead sponsor
Danielle Kim Turgeon
Other
Eligibility
18 Years to 100 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 25, 2026, 10:24 AM EDT
Recruiting Not applicable Interventional

Five or Ten Year Colonoscopy for 1-2 Non-Advanced Adenomatous Polyps

NCT05080673
View directory record Official record
Conditions
Adenocarcinoma of the Colon, Adenocarcinoma of the Rectum
Interventions
5-year and 10 Year Surveillance Colonoscopy after Qualifying Colonoscopy
Procedure
Lead sponsor
NRG Oncology
Other
Eligibility
45 Years to 70 Years
Enrollment
9,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2065
U.S. locations
478
States / cities
Fairbanks, Alaska • Goodyear, Arizona • Kingman, Arizona + 323 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Recruiting Phase 1 Interventional

Testing for Safety and Colorectal Cancer Preventive Effects of ONC201

NCT05630794
View directory record Official record
Conditions
Colorectal Adenomatous Polyp, Colorectal Carcinoma, Familial Adenomatous Polyposis, Multiple Adenomatous Polyps
Interventions
Biopsy Procedure, Biospecimen Collection, Colonoscopy, Dordaviprone Hydrochloride, Endoscopic Procedure, Questionnaire Administration, Sigmoidoscopy
Procedure · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
5
States / cities
Ann Arbor, Michigan • St Louis, Missouri • Cleveland, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Phase 1 Interventional Results available

Perfusion Assessment in Laparoscopic Left Anterior Resection

NCT01560377
View directory record Official record
Conditions
Rectal Cancer, Colon Cancer, Crohn's Disease, Polyp, Procidentia, Diverticulitis
Interventions
PINPOINT Endoscopic Fluorescence Imaging System
Device
Lead sponsor
Novadaq Technologies ULC, now a part of Stryker
Industry
Eligibility
18 Years and older
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
11
States / cities
Los Angeles, California • Orange, California • San Diego, California + 7 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Not applicable Interventional

Improving the Frequency of Colonoscopy in Patients With a Previous Colorectal Polyp

NCT00397969
View directory record Official record
Conditions
Colorectal Cancer, Precancerous Condition
Interventions
counseling intervention, screening colonoscopy
Other · Procedure
Lead sponsor
Harvard Medical School (HMS and HSDM)
Other
Eligibility
21 Years and older
Enrollment
800 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 19, 2013 · Synced Oct 25, 2026, 10:24 AM EDT
Active, not recruiting Not applicable Interventional

PARADIGM - En Bloc Trial With the EndoQuest Endoluminal Surgical (ELS) System

NCT06133387
View directory record Official record
Conditions
Colorectal Lesion, Colorectal Adenoma, Colorectal Polyp, Rectal Lesion, Rectal Adenoma, Rectal Polyp, Sigmoid; Lesion, Sigmoid Colon Polyp
Interventions
Endoscopic submucosal dissection using the ELS System
Device
Lead sponsor
EndoQuest Robotics, Inc.
Industry
Eligibility
22 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
6
States / cities
Scottsdale, Arizona • Orlando, Florida • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Not applicable Interventional

Submucosal Injection EMR vs. Underwater EMR for Colorectal Polyps

NCT01712048
View directory record Official record
Conditions
Colonic Polyps, Rectal Polyps
Interventions
Submucosal Injection EMR, Underwater EMR
Procedure
Lead sponsor
California Pacific Medical Center Research Institute
Other
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Prospective Trial to Compare the Clinical Efficiency of G-EYE™ HD Colonoscopy With Standard HD Colonoscopy

NCT01917513
View directory record Official record
Conditions
Adenoma, Polyps, Colorectal Cancer
Interventions
G-EYE™ colonoscopy, Standard Colonoscopy
Device
Lead sponsor
Smart Medical Systems Ltd.
Industry
Eligibility
50 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
2
States / cities
Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Oct 25, 2026, 10:24 AM EDT
Completed No phase listed Observational

Follow-Up Phone Calls After Colorectal Surgery

NCT00474097
View directory record Official record
Conditions
Colorectal Surgery, Colorectal Neoplasms, Colitis, Ulcerative, Diverticulitis, Colonic Polyps
Interventions
Not listed
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 15, 2014 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Phase 2 Interventional Results available

Celecoxib With or Without Eflornithine in Preventing Colorectal Cancer in Patients With Familial Adenomatous Polyposis

NCT00033371
View directory record Official record
Conditions
Colorectal Cancer, Familial Adenomatous Polyposis
Interventions
Celecoxib, Placebo, eflornithine, Laboratory biomarker analysis, Questionnaire administration
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 65 Years
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 29, 2020 · Synced Oct 25, 2026, 10:24 AM EDT
Completed No phase listed Observational

Early Post-Op Recovery After Partial Large Bowel Resection

NCT00492193
View directory record Official record
Conditions
Diverticulitis, Colon Polyps, Colorectal Cancer
Interventions
Not listed
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 15, 2014 · Synced Oct 25, 2026, 10:24 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Integrated Cancer Repository for Cancer Research

NCT02012699
View directory record Official record
Conditions
Pancreatic Cancer, Thyroid Cancer, Lung Cancer, Esophageal Cancer, Thymus Cancer, Colon Cancer, Rectal Cancer, Gastrointestinal Stromal Tumors, Anal Cancer, Bile Duct Cancer, Duodenal Cancer, Gallbladder Cancer, Gastric Cancer, Liver Cancer, Small Intestine Cancer, Peritoneal Surface Malignancies, Familial Adenomatous Polyposis, Lynch Syndrome, Bladder Cancer, Kidney Cancer, Penile Cancer, Prostate Cancer, Testicular Cancer, Ureter Cancer, Urethral Cancer, Hypopharyngeal Cancer, Laryngeal Cancer, Lip Cancer, Oral Cavity Cancer, Nasopharyngeal Cancer, Oropharyngeal Cancer, Paranasal Sinus Cancer, Nasal Cavity Cancer, Salivary Gland Cancer, Skin Cancer, Central Nervous System Tumor, Central Nervous System Cancer, Mesothelioma, Breast Cancer, Leukemia, Melanoma, Sarcoma, Unknown Primary Tumor, Multiple Myeloma, Ovarian Cancer, Endometrial Cancer, Vaginal Cancer, Neuroendocrine Tumors, Plasma Cell Dyscrasia, Healthy Control
Interventions
Not listed
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 110 Years
Enrollment
999,999 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2099
U.S. locations
42
States / cities
Greenwood Village, Colorado • Manchester, Connecticut • Daytona Beach, Florida + 34 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Completed No phase listed Observational

Study of Biomarkers in Blood & Tissue Samples From Patients With Colorectal Cancer or Polyps & Patients Without Polyps

NCT00898378
View directory record Official record
Conditions
Colorectal Cancer, Healthy, no Evidence of Disease, Precancerous Condition
Interventions
gene expression analysis, polymerase chain reaction, polymorphism analysis, protein expression analysis, proteomic profiling, gas chromatography, laboratory biomarker analysis, liquid chromatography, mass spectrometry, questionnaire administration
Genetic · Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
551 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 18, 2014 · Synced Oct 25, 2026, 10:24 AM EDT
Recruiting No phase listed Observational

GelPOINT® Path-Assisted Endoscopic Removal of Colon and Rectal Polyps: A Feasibility and Safety Study

NCT07723937
View directory record Official record
Conditions
Polyp Colorectal, Rectal Adenoma, Adenoma Colon Polyp
Interventions
Not listed
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Terminated Not applicable Interventional

Vitamin D Supplement in Preventing Colon Cancer in African Americans With Colon Polyps

NCT00870961
View directory record Official record
Conditions
Colorectal Cancer, Precancerous Condition
Interventions
cholecalciferol, placebo
Dietary Supplement · Other
Lead sponsor
Northwestern University
Other
Eligibility
50 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 16, 2013 · Synced Oct 25, 2026, 10:24 AM EDT
Recruiting No phase listed Observational

Gastrointestinal Biomarkers in Tissue and Biological Fluid Samples From Colorectal Cancer Patients

NCT00899626
View directory record Official record
Conditions
Colorectal Cancer, Esophageal Cancer, Gastric Cancer, Pancreatic Cancer, Precancerous Condition
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2045
U.S. locations
2
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Prevention of Colorectal Cancer Through Multiomics Blood Testing

NCT04369053
View directory record Official record
Conditions
Colon Cancer, Rectal Cancer, Colon Neoplasm, Colon Diseases, Colon Lesion, Colon Polyp, Colorectal Cancer, Polyp, Adenoma, Rectal Diseases, Gastrointestinal Tract Cancers
Interventions
Freenome test
Diagnostic Test
Lead sponsor
Freenome Holdings Inc.
Industry
Eligibility
45 Years to 85 Years
Enrollment
48,995 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
147
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 122 more
Source: ClinicalTrials.gov public record
Updated Dec 26, 2025 · Synced Oct 25, 2026, 10:24 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

Impact of Dietary Intervention on Inflammation and Microbiome Composition Post-Colonoscopy

NCT06603519
View directory record Official record
Conditions
Colorectal Polyp, Inflammation, Dietary Intervention, Microbiota, Colorectal Neoplasms, Metabolomics
Interventions
Modified Plant-Based Mediterranean Diet
Dietary Supplement
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Oct 25, 2026, 10:24 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Unprepped CT Colonography

NCT00586053
View directory record Official record
Conditions
Colorectal Neoplasms
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years and older
Enrollment
1,255 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2009
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 11, 2010 · Synced Oct 25, 2026, 10:24 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Third Eye Retroscope Randomized Clinical Evaluation

NCT01044732
View directory record Official record
Conditions
Colorectal Neoplasms
Interventions
Third Eye Retroscope
Device
Lead sponsor
Avantis Medical Systems
Industry
Eligibility
Not listed
Enrollment
448 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
5
States / cities
Baltimore, Maryland • Kansas City, Missouri • Lebanon, New Hampshire + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2017 · Synced Oct 25, 2026, 10:24 AM EDT