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Clinical trialNCT05045066RecruitingEarly phase 1Interventional

Immunological Effects of Vitamin D Replacement Among Black/African American Prostate Cancer Patients

SponsorMayo ClinicEnrollment220Localized Prostate CarcinomaLocally Recurrent Prostate CarcinomaMetastatic Prostate CarcinomaStage IV Prostate Cancer AJCC v8
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

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.
clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a FindMyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

2 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Mayo Clinic in Arizona

    Scottsdale, Arizona, United States

    Cassandra N. Moore, M.D.
    Recruiting
  • Mayo Clinic in Florida

    Jacksonville, Florida, United States

    Gerardo Colon-Otero, M.D.
    Recruiting

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study. It may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
29 Dec 2021
Primary completion
31 Aug 2028
Completion
31 Aug 2031
Last update posted
13 Oct 2026
Registered enrollment
220
Registry id
NCT05045066
clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 11 Nov 2026. Registry facts are shown as registered by the study sponsor; FindMyKOL does not interpret them.