Effect of Vitamin D Replacement on Tumor Response and Survival Parameters for Vitamin D Insufficient Patients With Cancer
PRIMARY OBJECTIVES:
I. To determine if vitamin D replacement in vitamin D insufficient patients with newly
diagnosed untreated diffuse large B-cell lymphoma (DLBCL) can improve event free survival at
12 months to be equivalent to that of a control population of vitamin D sufficient patients.
(Study I) II. To determine if vitamin D replacement in vitamin D insufficient patients with
early stage chronic lymphocytic leukemia (CLL) being managed with observation can improve
the percentage of patients requiring treatment with conventional therapy at 36 months to
that of a control population of vitamin D sufficient patients. (Study II) III. To determine
the incidence of vitamin D insufficiency in Alaska Native People with untreated breast
cancer and colorectal cancer. (Study III)
SECONDARY OBJECTIVES:
I. To assess the effect of vitamin D replacement in vitamin D insufficient patients with
newly diagnosed untreated DLBCL on overall survival. (Study I) II. To assess the effect of
vitamin D replacement in vitamin D insufficient patients with newly diagnosed untreated
DLBCL on event free survival. (Study I) III. To assess the effect of vitamin D replacement
in vitamin D insufficient patients with newly diagnosed untreated T cell lymphoma on event
free and overall survival. (Study I) IV. To assess if vitamin D replacement will increase
the tumor response rate in Vitamin D insufficient CLL patients. (Study II) V. To assess the
effect of vitamin D replacement in vitamin D insufficient Alaskan Native patients with newly
diagnosed colorectal cancer (CRC) or breast cancer (BC) on event free and overall survival.
(Study III)
TERTIARY OBJECTIVES:
I. To study immune effector cells (lymphocytes, monocytes), serum cytokines, and tumor cells
from vitamin D deficient and sufficient patients to learn the effects of vitamin D on both
tumor cells and the patient's immune system. (Study I-II) II. To assess the kinetics of
vitamin D replacement in vitamin D insufficient Alaskan Native people with CRC or BC. (Study
III)
OUTLINE:
STUDY I: Vitamin D sufficient patients receive no intervention. Vitamin D insufficient
patients receive cholecalciferol orally (PO) once weekly for 12 weeks and then once monthly
for a total of 36 months.
STUDY II: Vitamin D sufficient patients receive no intervention. Vitamin D insufficient
patients are randomized to 1 of 2 treatment arms.
ARM I: Patients receive cholecalciferol PO once weekly for 12 weeks and then once monthly
for a total of 36 months.
ARM II: Patients receive placebo PO once weekly for 12 weeks and then once monthly for a
total of 12 months. Patients then receive cholecalciferol once monthly for up to 24 months.
STUDY III: Vitamin D sufficient patients receive no intervention. Vitamin D insufficient
patients receive cholecalciferol orally (PO) once weekly for 12 weeks and then once monthly
for a total of 36 months.
After completion of study treatment, patients are followed up for 2 years.
Interventional
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment
Vitamin D replacement in vitamin D insufficient patients with newly diagnosed untreated DLBCL can improve event free survival (Study I) at 12 months calculated by the exact binomial method.
The proportion of successes will be estimated separately in the groups by the number of successes divided by the total number of evaluable patients. 95% confidence intervals for the true success proportion will be calculated by the exact binomial method.
Time from study registration to lymphoma progression, initiation of new anti-lymphoma therapy after completion or cessation of the original anthracycline based treatment, or death due to any cause, assessed at 12 months
No
Thomas Witzig
Principal Investigator
Mayo Clinic
United States: Food and Drug Administration
LS1293
NCT01787409
March 2013
Name | Location |
---|---|
University of Iowa | Iowa City, Iowa 52242 |
Mayo Clinic | Rochester, Minnesota 55905 |
University of Wisconsin Cancer Center Riverview | Wisconsin Rapids, Wisconsin 54494 |