Chemoprevention of Colorectal Adenomas
Public ClinicalTrials.gov record NCT00486512. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Clinical Trial Evaluating the Efficacy and Safety of a Combination Treatment Administered Over 3 Years in Patients at Risk of Experiencing Recurrence of Colorectal Adenomas
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of the study is to investigate if long-term treatment with three known drugs (acetylsalicylic acid, 1α 25-dihydroxy cholecalciferol, and calcium carbonate) prevents recurrence of colorectal adenomas.
Study identification
- NCT ID
- NCT00486512
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 3
- Enrollment
- 350 participants
Conditions and interventions
Conditions
Interventions
- 0.5 mg calcitriol (1a -25-dihydroxycholecalciferol) Drug
- 75 mg acetylsalicylic acid (ASA) + 1250 mg calcium carbonate (CaCO3) Drug
- placebo to 0.5 mg calcitriol (1a -25-dihydroxycholecalciferol) Drug
- placebo to 75 mg acetylsalicylic acid (ASA) + 1250 mg calcium carbonate (CaCO3) Drug
- Colonoscopy Procedure
Drug · Procedure
Eligibility (public fields only)
- Age range
- 40 Years to 75 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jun 2007 (Type not available)
- Primary completion
- Nov 2010 (Actual)
- Completion
- Nov 2010 (Actual)
- Last update posted
- Sep 3, 2020
2007 – 2010
United States locations
- U.S. sites
- 24
- U.S. states
- 19
- U.S. cities
- 23
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Alabama Digestive Disorders Center, P.C. | Huntsville | Alabama | 35802 | — |
| San Diego Digestive Disease Consultants, Inc. | San Diego | California | 92110 | — |
| Advance Digestive Care | Clearwater | Florida | 33756 | — |
| Internal Medicine Specialists | Orlando | Florida | 32806 | — |
| Atlanta Center for Gastroenterology, PC | Decatur | Georgia | 30033 | — |
| Central Indiana Gastroenterology Group | Anderson | Indiana | 46016 | — |
| Gastrointestinal Clinic of Quad Cities | Davenport | Iowa | 52807 | — |
| University of Kentucky Medical Center | Lexington | Kentucky | 40536 | — |
| Gastroenterology Associates of Eastern Maine | Bangor | Maine | 04401 | — |
| Digestive Disorders Associates | Annapolis | Maryland | 21401 | — |
| Office of Alan A. Rosen, M.D. | Baltimore | Maryland | 21215 | — |
| Borgess Medical Center | Kalamazoo | Michigan | 49048 | — |
| Colon and Rectal Surgery Associates, Ltd. | Saint Paul | Minnesota | 55114 | — |
| Digestive Health Specialists, PA | Tupelo | Mississippi | 38801 | — |
| Gastroenterology Research Associates | Cedar Knolls | New Jersey | 07927 | — |
| Stony Brook University Medical Center | Stony Brook | New York | 11794 | — |
| Wilmington Gastroenterology Associates | Wilmington | North Carolina | 28403 | — |
| Digestive Health Specialists PA | Winston-Salem | North Carolina | 27103 | — |
| Northwest Gastroenterology Clinic | Portland | Oregon | 97210 | — |
| Regional Gastroenterology Associates of Lancaster, Ltd | Lancaster | Pennsylvania | 17604-3200 | — |
| North Texas Gastroenterology Consultants | Dallas | Texas | 75248 | — |
| Alamo Medical Research | San Antonio | Texas | 78215 | — |
| Advanced Healthcare, S.C. | Milwaukee | Wisconsin | 53209 | — |
| Wisconsin Center for Advanced Research | Milwaukee | Wisconsin | 53215 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 15 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00486512, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Sep 3, 2020 · Synced Oct 17, 2026
Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.
Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT00486512 live on ClinicalTrials.gov.