Vitamin D and Prostate Cancer Among African Americans


About this study

The aims of this study are to evaluate the prevalence of vitamin D deficiency among AA prostate cancer patients and to determine the deficits in immunity associated with vitamin D deficiency. Also, we will evaluate whether the peripheral blood immune cell function is different in AA prostate cancer patients with metastatic disease as compared with those with localized disease.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Males and females, age ≥ 18 years.
  • Patients with a previous history of localized or metastatic prostate cancer.
  • Patient willing to participate in the study and provide informed consent.

Exclusion Criteria: 

  • Age < 18 years.
  • Known hypersensitivity to vitamin D.
  • Chemotherapy or surgery or radiation within the last 3 weeks prior to blood collection.
  • Kidney failure or dialysis.
  • Liver cirrhosis.
  • History of hypercalcemia.
  • Legal inability or restricted legal ability. Medical or psychological conditions not allowing proper study completion or informed consent signature.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Jacksonville, Fla.

Mayo Clinic principal investigator

Gerardo Colon-Otero, M.D.

Open for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office


More information


Publications are currently not available

Additional contact information

Cancer-related trials contact form

Phone: 855-776-0015 (toll-free)

International patient clinical studies questions