# Retrospective Study for Identificatiopn of a Link Between Doxycycline and COVID-19 Treatment

> **NCT05445479** · — · WITHDRAWN · sponsor: **Nantes University Hospital**

## Conditions studied

- COVID-19

## Interventions

- **DRUG:** Doxycycline

## Key facts

- **NCT ID:** NCT05445479
- **Lead sponsor:** Nantes University Hospital
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** WITHDRAWN
- **Start date:** 2022-01-01
- **Primary completion:** 2023-01-01
- **Final completion:** 2026-01-01
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** Study Never Initiated
- **Last updated:** 2025-01-16


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05445479

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05445479, "Retrospective Study for Identificatiopn of a Link Between Doxycycline and COVID-19 Treatment". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT05445479. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*