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Cholecalciferol and Flu Vaccine in Treating Healthy Participants

Healthy, no Evidence of Disease Clinical Trial

Official title:
Immune Responses to Influenza Vaccine Among Healthy Employees Working at Roswell Park Cancer Institute and the Relationship to Vitamin D Status

Clinical Trial Summary

This randomized clinical trial studies cholecalciferol and flu vaccine in treating healthy participants. Cholecalciferol may increase the immunologic response of flu vaccine in healthy participants. Flu vaccine may help the body build an immune response and help prevent flu

Clinical Trial Description

PRIMARY OBJECTIVES:

I. To examine the effect of 25-hydroxy vitamin D3 levels on the immunologic response (antibody responses week 4 [4 weeks (+/- 7 days)] post-vaccination) to the injectable seasonal (2011-2012) trivalent influenza vaccine among Roswell Park Cancer Institute (RPCI) employees. (Observational component) II. To examine the effect of vitamin D3 (cholecalciferol) supplementation on the immunologic response (antibody response Week 16 [4 weeks (+/- 7 days)] post-vaccination) to the injectable seasonal (2012-2013) trivalent influenza vaccine among RPCI employees. (Intervention component)

SECONDARY OBJECTIVES:

I. To track occurrences of flu-like illness in the study population from November 1, 2011 through April 1, 2012, using a standardized epidemiologic questionnaire. (Observational component) II. To determine the relationship between 25-hydroxy vitamin D3 levels at time of vaccination and its immunologic responses Week 20 (8 weeks [+/- 7 days]) and Week 24 (12 weeks [+/- 7 days]) following administration of the injected seasonal (2012-2013) trivalent influenza vaccine. (Intervention component) III. To track occurrences of flu-like illnesses in the study population from November 2012 through April 2013, using a standardized epidemiologic questionnaire. (Intervention component) IV. To evaluate the association between single-nucleotide polymorphisms (SNPs) and polymorphisms in the deoxyribonucleic acid (DNA) sequence of vitamin-D3 metabolizing enzymes, measures of vitamin-D3 metabolism (24,25 hydroxy [OH] vitamin D3) and response to seasonal (2012-201) trivalent influenza vaccine. (Intervention component)

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive low-dose cholecalciferol orally (PO) once daily (QD) for 12 weeks, followed by the seasonal (2012-2013) trivalent influenza vaccine intramuscularly (IM).

ARM II: Patients receive high-dose cholecalciferol PO QD for 12 weeks, followed by the seasonal (2012-2013) trivalent influenza vaccine IM.

After completion of study treatment, patients are followed up periodically. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01561989
Study type Interventional
Source Roswell Park Cancer Institute
Contact
Status Terminated
Phase N/A
Start date October 2011
Completion date June 2015
View Details
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