Vitamin D and Prostate Cancer: A Clinical Study Enrolling Subjects Undergoing Prostatectomy

Vitamin D and Prostate Cancer: A Randomized Clinical Study

The study population will be 80 adult men who have been diagnosed with prostate cancer who are scheduled to have their prostate surgically removed at either the Medical University of South Carolina (MUSC) or the Ralph H. Johnson VAMC, both located in Charleston, SC. The men will be randomized into two groups: one group will take vitamin D3 supplementation and the other will take a placebo. Blood levels of vitamin D3 will be obtained at the beginning of the study and again after two months, just prior to the surgical procedure (prostatectomy). Prostate tissue will be obtained from the surgical procedure and studied for the effect of vitamin D on the prostate cancer cells.

Study Overview

• Status: Completed
• Conditions: Prostate Cancer
• Intervention / Treatment: Drug: cholecalciferol; Other: placebo

Detailed Description

This study will enroll 80 (40 per study arm) subjects (>18 years of age), recently diagnosed with prostate cancer (histologically documented adenocarcinoma of the prostate), who are scheduled to undergo prostatectomy.

Eligible subjects will be recruited in the Urology Clinic at MUSC or Ralph H. Johnson VAMC. All subjects will be refered to the study by their Urologist. At the baseline visit, consent will be obtained before any study procedures are initiated. A blood sample will be obtained for 25(OH)D3 analysis. Subjects will be randomized to either the intervention group (vitamin D3 4000 IU daily) or the placebo group and take the study medication for approximately two months before their scheduled prostatectomy. The final study visit is the day of surgery. A blood sample for 25(OH)D3 analysis will be obtained. Prostate tissue will be collected from the Pathologist for (a) genomics (RNA sequencing) analysis; (b) proteomics (proteins, glycons and lipids) analysis and (c) Vitamin D Receptor (VDR) by immunohistochemistry.

• Study Type: Interventional
• Enrollment (Actual): 50
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • South Carolina
    • Charleston, South Carolina, United States, 29401
      • Ralph H. Johnson VA Medical Center
    • Charleston, South Carolina, United States, 29425
      • MUSC (Medical University of South Carolina)

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 19 years to 90 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Diagnosis of prostate cancer (by prostate biopsy)
• Scheduled to undergo a prostatectomy
• Ability to give his own consent to participate in the study

Exclusion Criteria:

• Serum 25(OH)D level less than 8ng/ml or greater than 50 ng/ml
• Vitamin D3 supplementation greater than or equal to 1000 IU daily

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Intervention: Cholecalciferol; vitamin D3 (cholecalciferol) supplementation at 4000 IU daily for approximately two months prior to surgery (prostatectomy).	Drug: cholecalciferol; softgels 4000 IU daily for approximately two months prior to surgery (prostatectomy).; Other Names: vitamin D3
Placebo Comparator: Placebo; softgel (containing no active ingredient) daily for approximately two months prior to surgery (prostatectomy).	Other: placebo; softgel containing no active ingredient daily for approximately two months prior to surgery (prostatectomy).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in Serum Levels of Vitamin D [25(OH)D3] in Subjects in the Supplementation Group and Those in the Control Group (Placebo).	Baseline vitamin D3 levels will be obtained at enrollment and approximately two months later during the surgical procedure (prostatectomy). These D3 levels will be evaluated for the 27 participants who had genomic analysis and compared by race (Caucasian and AA).	approximately two months from baseline to date of prostatectomy (exit)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Gene Transcripts Identified Regulated by Vitamin D Supplementation in Both AA and European American Participants	The intent of this outcome measure was to identify the number of gene transcripts found to be differentially expressed (where a difference or change has occurred) in both AA and EA subjects upon vitamin D supplementation. The transcripts differentially expressed were compared to the transcripts in the "Placebo" Arm/Group.	up to 8 months post prostatectomy

Collaborators and Investigators

• Sponsor: Medical University of South Carolina
• Investigators: Principal Investigator: Sebastiano Gattoni-Celli, MD, MUSC Department of Radiation Oncology

Study record dates

Study Major Dates

• Study Start: October 1, 2011
• Primary Completion (Actual): March 1, 2015
• Study Completion (Actual): December 1, 2015

Study Registration Dates

• First Submitted: December 6, 2011
• First Submitted That Met QC Criteria: March 31, 2016
• First Posted (Estimate): April 1, 2016

Study Record Updates

• Last Update Posted (Actual): December 3, 2019
• Last Update Submitted That Met QC Criteria: December 2, 2019
• Last Verified: December 1, 2019

More Information

Terms related to this study

• Keywords: prostate cancer; vitamin D
• Additional Relevant MeSH Terms: Neoplasms; Urogenital Neoplasms; Neoplasms by Site; Genital Neoplasms, Male; Prostatic Diseases; Prostatic Neoplasms; Physiological Effects of Drugs; Micronutrients; Vitamins; Bone Density Conservation Agents; Calcium-Regulating Hormones and Agents; Vitamin D; Cholecalciferol
• Other Study ID Numbers: MUSC Pro# 12772

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No