# Study to Evaluate the Influence of Hydrochlorothiazide on Dermal Photosensitivity and DNA Stability - a Pilot Study (HCTox Study)

> **NCT04654312** · PHASE1 · COMPLETED · sponsor: **Universität des Saarlandes** · enrollment: 30 (actual)

## Conditions studied

- Photosensitivity

## Interventions

- **DRUG:** Hydrochlorothiazide
- **DRUG:** Placebo

## Key facts

- **NCT ID:** NCT04654312
- **Lead sponsor:** Universität des Saarlandes
- **Sponsor class:** OTHER
- **Phase:** PHASE1
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2021-01-18
- **Primary completion:** 2021-07-22
- **Final completion:** 2021-07-22
- **Target enrollment:** 30 (ACTUAL)
- **Last updated:** 2025-08-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04654312

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04654312, "Study to Evaluate the Influence of Hydrochlorothiazide on Dermal Photosensitivity and DNA Stability - a Pilot Study (HCTox Study)". Retrieved via AI Analytics 2026-06-12 from https://api.ai-analytics.org/clinical/NCT04654312. Licensed CC0.

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