# A Study of Hydroxychloroquine vs Placebo to Prevent COVID-19 Infection in Patients Receiving Radiotherapy

> **NCT04381988** · PHASE2 · TERMINATED · sponsor: **Memorial Sloan Kettering Cancer Center** · enrollment: 4 (actual)

## Conditions studied

- COVID-19
- Cancer

## Interventions

- **DRUG:** Hydroxychloroquine
- **OTHER:** Placebo
- **RADIATION:** Radiation therapy

## Key facts

- **NCT ID:** NCT04381988
- **Lead sponsor:** Memorial Sloan Kettering Cancer Center
- **Sponsor class:** OTHER
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** TERMINATED
- **Start date:** 2020-05-07
- **Primary completion:** 2021-04-21
- **Final completion:** 2021-04-21
- **Target enrollment:** 4 (ACTUAL)
- **Why stopped:** The study was terminated based results of other studies and use of the new vaccine.
- **Last updated:** 2021-10-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04381988

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04381988, "A Study of Hydroxychloroquine vs Placebo to Prevent COVID-19 Infection in Patients Receiving Radiotherapy". Retrieved via AI Analytics 2026-06-05 from https://api.ai-analytics.org/clinical/NCT04381988. Licensed CC0.

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