# Effect of High Dose Vitamin D on Cancer Biomarkers and Breast Cancer Tumors

> **NCT02856503** · PHASE1,PHASE2 · WITHDRAWN · sponsor: **Eli Avisar, MD**

## Conditions studied

- Breast Cancer
- Invasive Breast Carcinoma
- Ductal Carcinoma In-situ

## Interventions

- **DRUG:** Vitamin D3

## Key facts

- **NCT ID:** NCT02856503
- **Lead sponsor:** Eli Avisar, MD
- **Sponsor class:** OTHER
- **Phase:** PHASE1,PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2019-01-13
- **Primary completion:** 2023-01-31
- **Final completion:** 2024-04-15
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Lack of Funding
- **Last updated:** 2026-04-17


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02856503

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02856503, "Effect of High Dose Vitamin D on Cancer Biomarkers and Breast Cancer Tumors". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT02856503. Licensed CC0.

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