# Vitamin D Supplementation as a Neoadjuvant for Photodynamic Therapy of Actinic Keratoses

> **NCT04140292** · PHASE2 · COMPLETED · sponsor: **Case Comprehensive Cancer Center** · enrollment: 75 (actual)

## Conditions studied

- Actinic Keratosis

## Interventions

- **DRUG:** Photodynamic therapy (PDT)
- **DRUG:** Vitamin D3

## Key facts

- **NCT ID:** NCT04140292
- **Lead sponsor:** Case Comprehensive Cancer Center
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2020-01-13
- **Primary completion:** 2020-11-24
- **Final completion:** 2021-05-27
- **Target enrollment:** 75 (ACTUAL)
- **Last updated:** 2022-06-24


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04140292

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04140292, "Vitamin D Supplementation as a Neoadjuvant for Photodynamic Therapy of Actinic Keratoses". Retrieved via AI Analytics 2026-06-23 from https://api.ai-analytics.org/clinical/NCT04140292. Licensed CC0.

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