Efficacy of Vitamin D in Colorectal Cancer Chemoprevention
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ClinicalTrials.gov Identifier: NCT01574027 |
Recruitment Status
:
Completed
First Posted
: April 10, 2012
Last Update Posted
: April 10, 2012
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Tracking Information | ||||
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First Submitted Date ICMJE | March 30, 2012 | |||
First Posted Date ICMJE | April 10, 2012 | |||
Last Update Posted Date | April 10, 2012 | |||
Study Start Date ICMJE | April 2008 | |||
Actual Primary Completion Date | October 2011 (Final data collection date for primary outcome measure) | |||
Current Primary Outcome Measures ICMJE |
Reduction in ACF biomarkers [ Time Frame: 6 months ] The investigators propose giving patient's with 10 or more ACF's 25(OH)D3 (calcifediol) or placebo, and determining if there is a drug-dependant decrease in ACF number. The primary objective is to determine whether 25(OH)D3 (calcifediol) supplementation, compared to placebo, causes significant reduction of ACF number from baseline levels. The primary endpoint will be change in ACF number.
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Original Primary Outcome Measures ICMJE | Same as current | |||
Change History | No Changes Posted | |||
Current Secondary Outcome Measures ICMJE | Not Provided | |||
Original Secondary Outcome Measures ICMJE | Not Provided | |||
Current Other Outcome Measures ICMJE | Not Provided | |||
Original Other Outcome Measures ICMJE | Not Provided | |||
Descriptive Information | ||||
Brief Title ICMJE | Efficacy of Vitamin D in Colorectal Cancer Chemoprevention | |||
Official Title ICMJE | Not Provided | |||
Brief Summary | Vitamin D's ability to prevent colorectal cancer (CRC) has been suspected for nearly 30 years, but has never been directly studied in humans. The biologically active version of vitamin D, 1,25(OH)2D3, cannot be readily used in humans because of its tendency to cause serum calcium levels to rise. In contrast, 25(OH)D3 (ie calcifediol) does not have this side effect. The investigators previous research suggests that the enzyme necessary to convert 25(OH)D3 (calcifediol) into active 1,25(OH)D3 is present in cells lining the large intestine (colon). Aberrant crypt foci (ACF) are very small (ie microscopic) collections of abnormally shaped cells that are a commonly used marker of CRC risk. Screening colonoscopy at UIC routinely uses methods that allow ACF counting to be done as a part of standard practice. ACF's are not fixed, like polyps or cancers, but can disappear as a person's risk for developing CRC decreases. The investigators propose giving patient's with 10 or more ACF's 25(OH)D3 (calcifediol) or placebo, and determining if there is a drug-dependant decrease in ACF number. The primary objective is to determine whether 25(OH)D3 (calcifediol) supplementation, compared to placebo, causes significant reduction of ACF number from baseline levels. The primary endpoint will be change in ACF number. |
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Detailed Description | Patients will be offered participation in this study at the time of their regularly scheduled visit to the UIC Colorectal Cancer Screening Clinic. Those agreeing will have indicated their understanding that participation will be conditional upon their having 10+ ACF at the time of their screening colonoscopy. If at screening colonoscopy 10+ ACF are found patients will:
At 7 and 14 days after the screening colonoscopy patients will be called on the telephone by the clinical research nurse assigned to this study to follow-up and note 25(OH)D3 (calcifediol) toxicity, if any (note that toxicity has not been described except in the case of overdose). Signs specifically looked for will include: headache, increased urination, nausea, vomiting, abdominal pain, weakness, constipation, and anorexia. If present, patient will be advised to present immediately to the UIC GCRC for physical and serological evaluation. At 30, 90 and 120 days the patient will have agreed to present to the GCRC clinic for:
Evidence on exam, or laboratory, of hypercalcemia will result in an adverse event reporting and immediate patient discharge from this study. Signs specifically looked for include: headache, increased urination, nausea, vomiting, abdominal pain, weakness, constipation, and anorexia. At 180 days the patient will have agreed to undergo:
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Study Type ICMJE | Interventional | |||
Study Phase | Phase 2 | |||
Study Design ICMJE | Allocation: Randomized Intervention Model: Parallel Assignment Masking: Triple (Participant, Care Provider, Investigator) Primary Purpose: Prevention |
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Condition ICMJE | Colorectal Cancer | |||
Intervention ICMJE |
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Study Arms |
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Publications * | Not Provided | |||
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline. |
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Recruitment Information | ||||
Recruitment Status ICMJE | Completed | |||
Actual Enrollment ICMJE |
55 | |||
Original Actual Enrollment ICMJE | Same as current | |||
Actual Study Completion Date | October 2011 | |||
Actual Primary Completion Date | October 2011 (Final data collection date for primary outcome measure) | |||
Eligibility Criteria ICMJE | Inclusion Criteria:
Exclusion Criteria:
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Sex/Gender |
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Ages | 50 Years and older (Adult, Senior) | |||
Accepts Healthy Volunteers | Yes | |||
Contacts ICMJE | Contact information is only displayed when the study is recruiting subjects | |||
Listed Location Countries ICMJE | United States | |||
Removed Location Countries | ||||
Administrative Information | ||||
NCT Number ICMJE | NCT01574027 | |||
Other Study ID Numbers ICMJE | R01CA122299( U.S. NIH Grant/Contract ) | |||
Has Data Monitoring Committee | Not Provided | |||
U.S. FDA-regulated Product | Not Provided | |||
IPD Sharing Statement | Not Provided | |||
Responsible Party | Richard Benya, M.D., University of Illinois | |||
Study Sponsor ICMJE | University of Illinois at Chicago | |||
Collaborators ICMJE | Not Provided | |||
Investigators ICMJE |
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PRS Account | University of Illinois at Chicago | |||
Verification Date | April 2012 | |||
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |