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ClinicalTrials.gov public records Last synced May 22, 2026, 1:12 AM EDT

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

Showing 1–24 of 920 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Rectum Neoplasm Clear all
Active, not recruiting Phase 1 Interventional
View directory record Official record
Conditions
Advanced Bile Duct Carcinoma, Stage II Esophageal Cancer AJCC v7, Stage II Pancreatic Cancer AJCC v6 and v7, Stage IIA Esophageal Cancer AJCC v7, Stage IIA Pancreatic Cancer AJCC v6 and v7, Stage IIB Esophageal Cancer AJCC v7, Stage IIB Pancreatic Cancer AJCC v6 and v7, Stage III Colon Cancer AJCC v7, Stage III Esophageal Cancer AJCC v7, Stage III Gastric Cancer AJCC v7, Stage III Liver Cancer, Stage III Pancreatic Cancer AJCC v6 and v7, Stage III Rectal Cancer AJCC v7, Stage III Small Intestinal Cancer AJCC v7, Stage IIIA Colon Cancer AJCC v7, Stage IIIA Esophageal Cancer AJCC v7, Stage IIIA Gastric Cancer AJCC v7, Stage IIIA Rectal Cancer AJCC v7, Stage IIIA Small Intestinal Cancer AJCC v7, Stage IIIB Colon Cancer AJCC v7, Stage IIIB Esophageal Cancer AJCC v7, Stage IIIB Gastric Cancer AJCC v7, Stage IIIB Rectal Cancer AJCC v7, Stage IIIB Small Intestinal Cancer AJCC v7, Stage IIIC Colon Cancer AJCC v7, Stage IIIC Esophageal Cancer AJCC v7, Stage IIIC Gastric Cancer AJCC v7, Stage IIIC Rectal Cancer AJCC v7, Stage IV Colon Cancer AJCC v7, Stage IV Esophageal Cancer AJCC v7, Stage IV Gastric Cancer AJCC v7, Stage IV Liver Cancer, Stage IV Pancreatic Cancer AJCC v6 and v7, Stage IV Rectal Cancer AJCC v7, Stage IV Small Intestinal Cancer AJCC v7, Stage IVA Colon Cancer AJCC v7, Stage IVA Liver Cancer, Stage IVA Rectal Cancer AJCC v7, Stage IVB Colon Cancer AJCC v7, Stage IVB Liver Cancer, Stage IVB Rectal Cancer AJCC v7
Interventions
Intensity-Modulated Radiation Therapy, Laboratory Biomarker Analysis, Pharmacological Study, Ropidoxuridine
Radiation · Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced May 22, 2026, 1:12 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Breast Cancer, Lung Cancer, Muscle Invasive Bladder Cancer, Rectal Cancer, Pancreatic Cancer, Ovarian Cancer, Gastroesophageal Cancer, Prostate Cancer, Melanoma, Head and Neck Cancer, Uterine Cancer, Liver Cancer
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
9,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2035
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced May 22, 2026, 1:12 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Cancer
Interventions
protein expression analysis, immunohistochemistry staining method, laboratory biomarker analysis, biopsy
Genetic · Other · Procedure
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
Up to 120 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 9, 2016 · Synced May 22, 2026, 1:12 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Colorectal Neoplasms, Colon Cancer, Rectal Cancer, Anal Cancer
Interventions
Bevacizumab
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 9, 2012 · Synced May 22, 2026, 1:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Anus Neoplasms
Interventions
Self-anal exam arm
Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
27 Years to 80 Years · Male only
Enrollment
201 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 11, 2016 · Synced May 22, 2026, 1:12 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Anal Cancer, HIV Infection, Human Papilloma Virus Infection
Interventions
comparison of screening methods, laboratory biomarker analysis, questionnaire administration, quality-of-life assessment
Procedure · Other
Lead sponsor
AIDS Malignancy Consortium
Network
Eligibility
18 Years and older · Female only
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
11
States / cities
Los Angeles, California • San Francisco, California • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 6, 2023 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Colorectal Cancer
Interventions
fluorouracil, leucovorin calcium
Drug
Lead sponsor
NCIC Clinical Trials Group
Network
Eligibility
18 Years to 79 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1994 – 2009
U.S. locations
16
States / cities
Scottsdale, Arizona • Peoria, Illinois • Urbana, Illinois + 13 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2020 · Synced May 22, 2026, 1:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
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 16, 2025 · Synced May 22, 2026, 1:12 AM EDT
Terminated Not applicable Interventional Results available
View directory record Official record
Conditions
Colon Cancer, Rectal Cancer, Cancer of the Rectum, Cancer of the Colon, Precancerous Polyp, Malignant Polyp
Interventions
Optical coherence tomography probe
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
40 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 18, 2025 · Synced May 22, 2026, 1:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Breast Cancer, Colon Cancer, Rectum Cancer, Cervix Cancer, Prostate Cancer
Interventions
Health coordinator (or patient navigator), Educational materials only
Behavioral
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
65 Years and older
Enrollment
2,593 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Colorectal Cancer
Interventions
counseling intervention, educational intervention, study of socioeconomic and demographic variables
Other
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
40 Years and older
Enrollment
660 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
18
States / cities
Newark, Delaware • Washington D.C., District of Columbia • Tampa, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated May 15, 2014 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Colorectal Cancer, Metastatic Cancer
Interventions
FOLFOX regimen, fluorouracil, isolated perfusion, leucovorin calcium, melphalan, oxaliplatin
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 19, 2013 · Synced May 22, 2026, 1:12 AM EDT
Active, not recruiting Not applicable Interventional
View directory record Official record
Conditions
Prostate Cancer
Interventions
SUPR-SABR treatment
Radiation
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older · Male only
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 18, 2026 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Prostate Cancer
Interventions
SpaceOAR System
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older · Male only
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
20
States / cities
Phoenix, Arizona • Campbell, California • Sacramento, California + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 18, 2021 · Synced May 22, 2026, 1:12 AM EDT
Terminated Phase 2 Interventional Results available
View directory record Official record
Conditions
Anal Cancer, Carcinoma of the Appendix, Colorectal Cancer, Extrahepatic Bile Duct Cancer, Gallbladder Cancer, Gastric Cancer, Gastrointestinal Carcinoid Tumor, Liver Cancer, Nausea and Vomiting, Pancreatic Cancer, Primary Peritoneal Cavity Cancer, Small Intestine Cancer
Interventions
palonosetron hydrochloride, placebo
Drug · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
69
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Moline, Illinois + 37 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced May 22, 2026, 1:12 AM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Low Anterior Resection Syndrome, Rectal Carcinoma
Interventions
Dietary Fiber, Enema Administration, Loperamide Hydrochloride, Physical Therapy, Questionnaire Administration, X-Ray Imaging
Dietary Supplement · Procedure · Drug + 1 more
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Adenocarcinoma of the Rectum, Stage II Rectal Cancer, Stage III Rectal Cancer
Interventions
bevacizumab, fluorouracil, external beam radiation therapy, therapeutic conventional surgery, laboratory biomarker analysis
Biological · Drug · Radiation + 2 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
2
States / cities
Boston, Massachusetts • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 4, 2013 · Synced May 22, 2026, 1:12 AM EDT
Recruiting Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Solid Tumor, Adult, Colorectal Cancer, NSCLC, Non Small Cell Lung Cancer, NSCLC, Recurrent, Non-Small Cell Squamous Lung Cancer, Pancreas Cancer, Pancreatic Neoplasm, Colorectal Adenocarcinoma, CRC, Colon Cancer, Rectal Cancer, Cancer, Ovarian Cancer, Ovarian Neoplasms, Mesothelioma, Mesothelioma, Malignant, Ovary Cancer, Lung Cancer, MESOM
Interventions
A2B694, A2B543, xT CDx with HLA-LOH Assay
Biological · Diagnostic Test
Lead sponsor
A2 Biotherapeutics Inc.
Industry
Eligibility
18 Years and older
Enrollment
474 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
12
States / cities
Gilbert, Arizona • La Jolla, California • Los Angeles, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Anal Cancer, Colorectal Cancer, Gallbladder Cancer, Gastric Cancer, Pancreatic Cancer
Interventions
Recombinant Interleukin-12
Biological
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2001
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2012 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Melanoma, Cervical Carcinoma, Pancreatic Carcinoma, Triple Negative Breast Cancer, Hepatocellular Carcinoma, Urothelial Carcinoma, Squamous Cell Carcinoma of the Head and Neck, Nasopharyngeal Carcinoma, Renal Cell Carcinoma, Non-small Cell Lung Carcinoma, Small Cell Lung Carcinoma, Gastric or Gastroesophageal Junction Adenocarcinoma, Advanced or Metastatic Solid Tumors, Prostate Carcinoma, Epithelial Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Carcinoma, Intrahepatic Cholangiocarcinoma, Squamous Cell Anal Cancer, Squamous Cell Penile Carcinoma, Squamous Cell Vulvar Carcinoma, Colorectal Carcinoma, Endometrial Carcinoma
Interventions
XmAb®22841, Pembrolizumab (Keytruda®)
Biological
Lead sponsor
Xencor, Inc.
Industry
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
28
States / cities
Encinitas, California • La Jolla, California • Los Angeles, California + 15 more
Source: ClinicalTrials.gov public record
Updated Mar 29, 2023 · Synced May 22, 2026, 1:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Healthy Subject
Interventions
Dietary Fiber, Fish Oil, Comparator
Dietary Supplement · Other
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
50 Years to 75 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced May 22, 2026, 1:12 AM EDT
Withdrawn No phase listed Observational
View directory record Official record
Conditions
Rectal Cancer
Interventions
Circulating tumor DNA(ctDNA) level measurement
Diagnostic Test
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 17, 2022 · Synced May 22, 2026, 1:12 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
HIV Infections, Anus Neoplasms
Interventions
Not listed
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
13 Years and older
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
13
States / cities
Los Angeles, California • San Francisco, California • Denver, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2014 · Synced May 22, 2026, 1:12 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Recurrent Colon Cancer, Recurrent Rectal Cancer, Stage IV Colon Cancer, Stage IV Rectal Cancer
Interventions
gamma-secretase/Notch signalling pathway inhibitor RO4929097, laboratory biomarker analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 19, 2014 · Synced May 22, 2026, 1:12 AM EDT