Overview

This trial is active, not recruiting.

Condition prostatic neoplasms
Treatment vitamin d (calcitriol)
Sponsor Stanford University
Start date February 2007
End date November 2007
Trial size 24 participants
Trial identifier NCT00482157, 97408, PROS0022

Summary

After the diagnosis of prostate cancer, many men alter their lifestyle or diet or use various supplements in an attempt to retard the growth of their cancer. While there is limited data on the use of diet and supplements to alter the risk of prostate cancer, even less is known regarding the ability of diet or supplements to alter progression. For men who have elected active surveillance, the investigators propose to investigate the ability of vitamin D to retard the growth of prostate cancer.

United States No locations recruiting
Other Countries No locations recruiting

Study Design

Allocation randomized
Intervention model parallel assignment
Masking double-blind
Primary purpose treatment

Primary Outcomes

Measure
PSA velocity > than 2 ng/ml/year; any adverse pathological findings on extended pattern biopsies with a Gleason sum >7; involvement of > 50% of any core by cancer; > 1/3 of cores positive; or other incidental evidence of clinical progression
time frame:

Eligibility Criteria

Male participants at least 45 years old.

Inclusion Criteria:- Untreated prostate adenocarcinoma by an extended biopsy (>8 needle cores on systematic prostate biopsy) within 1 year of the screening date - PSA <10.0 ng/ml - Gleason sum 6 or <2 mm Gleason pattern 4 - No more than 33% of biopsy cores positive Exclusion Criteria:- Prior or concurrent treatment for prostate cancer - Use of Finasteride, Dutasteride, Saw Palmetto - Use of NSAIDs, COX-2 inhibitors and/or aspirin, soy or vitamin D supplements for more than 7 days over the one month prior to study - Kidney disease, hypercalcemia or renal stones - ECOG performance status >1 - Uncontrolled hypertension, unstable angina, history of transient ischemic attack (TIA), history of stroke.

Additional Information

Official title Calcitriol or Placebo in Men for Prostate Cancer Active Surveillance
Principal investigator Joseph C. Presti Jr.
Description Men will be randomized to each of two arms for a total of 24 subjects: calcitriol alone (DN101, 45 micrograms once weekly) or placebo. Baseline laboratory assays, including serum PSA, serum and urine calcium and creatinine, will be performed and the EPIC questionnaire (expanded prostate cancer index composite, validated HRQOL tool for prostate cancer patients) will be completed. Patients will also undergo prostate needle biopsy [4 cores taken under transrectal ultrasound (TRUS) guidance] to establish baseline levels of gene expression. Follow-up at the end of 2 weeks (just prior to the third dose) will include a history and physical, and a repeat of all baseline blood and urine tests. Follow-up at 3 months will include a history and physical, repeating all blood and urine tests, and the EPIC questionnaire. At 6 months, in addition to the history and physical, blood and urine tests, and the EPIC questionnaire, a TRUS-guided prostate needle biopsy will be performed. This will be a standard 12-core scheme and 4 of these cores will be used for laboratory analysis. Renal ultrasounds will again be performed on men in the calcitriol arms to look for stones. Patients who show no evidence of clinical progression will be offered to remain on study, in their designated treatment arm, for an additional 6 months. Any patient exhibiting clinical progression at any time will be withdrawn from the study and offered standard treatment options. For patients remaining on study at 12 months, an end-of-study biopsy will be requested (12-core scheme with 4 cores used for laboratory analysis)
Trial information was received from ClinicalTrials.gov and was last updated in June 2009.
Information provided to ClinicalTrials.gov by Stanford University.