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Study of Vitamin D in Untreated Metastatic Colorectal Cancer

Status: Recruiting
Phase: Phase 2
Diagnosis: Gastrointestinal Malignancies, Colorectal Cancer
NCT ID: NCT01516216 (View complete trial on
DFCI Protocol ID: 11-436


The Vitamin D receptor is found in colon cancer cells. When Vitamin D binds to the receptor in the cancer cells, it may stop cancer cells from growing abnormally and may cause cell death. Vitamin D has been used in other research studies and information from those other research studies suggests that Vitamin D may help in the treatment of colorectal cancer. In this research study, the investigators are comparing standard and higher dose Vitamin D treatment when given in combination with standard treatment for metastatic colorectal cancer. Standard treatment includes the chemotherapy combination of 5-FU, Leucovorin and Oxaliplatin (FOLFOX) with bevacizumab.


Conducting Institutions:
Massachusetts General Hospital, Beth-Israel Deaconess Medical Center, Dana-Farber Cancer Institute, Dana Farber Cancer Institute at Milford, DF/BWCC at South Shore Hospital

Overall PI:
Kimmie Ng, MD, Dana-Farber Cancer Institute

Site-responsible Investigators:
Rebecca Miksad, MD, Beth Israel Deaconess Medical Center
Rolf Freter, MD, Ph.D., Dana Farber Cancer Institute at South Shore
Michael Constantine, M.D., Dana Farber Cancer Institute at Milford Hosptial
David P. Ryan, MD, Massachusetts General Hospital

Dana-Farber Cancer Institute: Gastrointestinal Research Line, 617-632-5960
Beth-Israel Deaconess Medical Center: Cancer Trials Call Center, 617-667-3060
Massachusetts General Hospital: Cancer Trials Call Center, 877-789-6100

Eligibility Criteria

Inclusion Criteria: - Histologically confirmed adenocarcinoma of the colon or rectum that is metastatic or locally advanced (unresectable) - Measurable disease - KRAS wild-type and KRAS mutant patients are eligible - No prior systemic treatment for advanced or metastatic colorectal cancer is allowed - No prior radiotherapy to more than 25% of bone marrow - No surgery or major biopsy within 4 weeks of randomization - Paraffin-embedded and/or snap-frozen tumor tissue samples must be available Exclusion Criteria: - Not pregnant or breastfeeding - No prior chemotherapy, systemic therapy or investigational agent - No concurrent use of other anti-cancer therapy - No known brain metastases - No history of other malignancies except adequately treated non-melanoma skin cancer, curatively treated in situ cancer of the cervix, curatively treated lobular or ductal carcinoma in situ of the breast or other cancer curatively treated with no evidence of disease for more than 3 years prior to randomization - No regular use of vitamin D supplements greater than 2000 IU per day in the past year - No history of allergic reactions attributed to compounds of similar chemical or biologic composition to 5-FU, capecitabine, oxaliplatin, leucovorin, bevacizumab and/or vitamin D3 - No significant history of bleeding events, pre-existing bleeding diathesis, coagulopathy or gastrointestinal perforation - No arterial thrombotic events within 6 months of randomization - No serious non-healing wound, ulcer or bone fracture - No history of uncontrolled hypertension - No clinically significant peripheral neuropathy - No predisposing colonic or small bowel disorders in which the symptoms are uncontrolled - No uncontrolled seizure disorder or active neurological disease - No pre-existing hypercalcemia - No known active hyperparathyroid disease - No regular use of thiazide diuretics - No malabsorption, uncontrolled vomiting or diarrhea - No known co-morbid disease that would increase the risk of toxicity - No use of chronic oral corticosteroid therapy or any other therapy that can cause vitamin D depletion - No clinically significant cardiovascular disease - No uncontrolled intercurrent illness - No history of any medical or psychiatric condition or addictive disorder or laboratory abnormality that may increase the risks associated with study participation
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