Actively Recruiting
Immunological Effects of Vitamin D Replacement Among Black/African American Prostate Cancer Patients
Led by Mayo Clinic · Updated on 2026-03-02
220
Participants Needed
2
Research Sites
400 weeks
Total Duration
On this page
Sponsors
M
Mayo Clinic
Lead Sponsor
C
Congressionally Directed Medical Research Programs
Collaborating Sponsor
AI-Summary
What this Trial Is About
This early phase I is to find out how common vitamin D insufficiency is among African American patients with a history of prostate cancer that has not spread to other parts of the body (localized) or has spread to other places in the body (metastatic) and how vitamin D insufficiency affects the immune system. This study also aims to find out if replacing vitamin D results in normalization of the immune function. Information from this study may benefit prostate cancer patients by identifying vitamin D insufficiency which in several studies had been found to contribute to more aggressive prostate cancers.
CONDITIONS
Official Title
Immunological Effects of Vitamin D Replacement Among Black/African American Prostate Cancer Patients
Who Can Participate
Eligibility Criteria
You may qualify if you...
- African American males aged 18 years or older
- History of localized, metastatic, or locally recurrent prostate cancer
- Vitamin D levels below 30 ng/ml
You will not qualify if you...
- Known allergy to vitamin D
- End stage renal failure requiring dialysis
- Liver cirrhosis
- Taking vitamin D or multivitamin supplements containing more than 400 IU daily in the past month
- Medical or psychological conditions preventing study completion or informed consent
- Chemotherapy, surgery, or radiation within the last 3 weeks prior to blood collection
- History of high blood calcium levels
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 2 locations
1
Mayo Clinic in Arizona
Scottsdale, Arizona, United States, 85259
Actively Recruiting
2
Mayo Clinic in Florida
Jacksonville, Florida, United States, 32224-9980
Actively Recruiting
Research Team
C
Clinical Trials Referral Office
CONTACT
C
Cancer Center Clinical Trials
CONTACT
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
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