At a glance
ClinicalIndex Comparison RecordPhase 3Completed· 300 enrolled
Drug / intervention
vitamin D +1 moredietary
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.
Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.
Vitamin D and Breast Cancer Biomarkers
In Brief
A Phase 3 clinical trial evaluating vitamin D and placebo for Breast Cancer. Completed, enrolled 300 participants across 103 sites.
Detailed Summary
RATIONALE: Vitamin D may help prevent breast cancer. PURPOSE: This randomized clinical trial is studying vitamin D and breast cancer biomarkers in female patients.
Study Details
Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsBreast Cancer
CountriesUnited States
CollaboratorsNational Cancer Institute (NCI)
Timeline
Phase 3CompletedFinished
2011201220132014201520162017201820192020202120222023202420252026
Enrollment StartOct 2010
First PostedOct 2010
Primary CompletionDec 2014
TodayJul 2026
First PostedOct 20, 2010
Enrollment StartOct 1, 2010
Primary CompletionDec 1, 2014
TodayJul 2, 2026
Enrollment to primary: 4.2 yearsPosted 15.7 years ago
Interventions
vitamin Ddietary
Given orally
placeboother
Given orally