The purpose of this study is to find out what effects, good and/or bad, vitamin D blood levels has on stage IV colorectal cancer. Tbe doctors want to see if it is possible to increase low vitamin D levels into normal range using vitamin D supplements taken by mouth. Low vitamin D levels have been associated with worse outcomes in persons who have cancer. Low vitamin D may also cause people to have symptoms such as pain and fatigue. We want to see if increasing low vitamin D levels will help improve cancer outcomes. Vitamin D is routinely repleted in all subjects known to be vitamin D deficient. Therefore, the treatment given would be considered standard of care.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
45
Patients will be given vitamin D repletion with Cholecalciferol (vitamin D3 50,000 International Units) three times per week until the target vitamin D level of 40 ng/ml is achieved, and vitamin D3 maintenance initiated at 2,000 International Units daily thereafter.
Memoral Sloan Kettering Cancer Center
Basking Ridge, New Jersey, United States
Memorial Sloan-Kettering Cancer Center @ Suffolk
Commack, New York, United States
Memorial Sloan Kettering Cancer Center
New York, New York, United States
Memorial Sloan-Kettering at Mercy Medical Center
Rockville Centre, New York, United States
Memoral Sloan Kettering Cancer Center@Phelps Memorial Hospital
Sleepy Hollow, New York, United States
To Achieve Target Vitamin D Level
To determine the ability of achieving the target serum 25-hydroxy vitamin D level of 40 ng/ml within 6 weeks of beginning vitamin D supplements in patients with metastatic colon cancer. A response is defined as achieving serum vitamin D levels ≥40 ng/ml at least once at any point during the first 6 weeks
Time frame: Within 6 weeks of beginning vitamin D
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