ArticleCell discovery2020
Hydroxychloroquine, a less toxic derivative of chloroquine, is effective in inhibiting SARS-CoV-2 infection in vitro.
Article in Cell discovery, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 10 registered trials, which are not on this map. Cited by 1,116 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Will Hydroxychloroquine Impede or Prevent COVID-19: WHIP COVID-19 Study
A Randomized Phase 2/3 Trial of Hydroxychloroquine In Covid-19 Kinetics
Randomized Trial Evaluating Effect of Outpatient Hydroxychloroquine on Reducing Hospital Admissions in Pregnant Women With SARS-CoV-2 Infection: HyPreC Trial
Clinical Trial Evaluating Safety and Efficacy of Hydroxychloroquine and Nitazoxanide Combination as Adjuvant Therapy in Covid-19 Newly Diagnosed Egyptian Patients: A Tanta University Hope
A Multi-site, Randomized, Double-Blind, Comparative Trial of the Safety and Efficacy of Standard of Care (SOC) Plus Famotidine vs SOC Plus Placebo for the Treatment of COVID-19 in Hospitalized Adults
Treatment of Covid-19 With Favipiravir Versus Hydroxychloroquine: a Randomized Comparator Trial
Prevention of COVID19 Infection by the Administration of Hydroxychloroquine to Institutionalized Older People and Nursing Home Staff. Controlled Clinical Trial, Randomized Triple Blind by Clusters (PREVICHARM Study)
Efficacy of Intravenous Infusions of Stem Cells in the Treatment of COVID-19 Patients
Rapid Development and Implementation of a Remote ECG-monitored Prospective Randomized Clinical Trial During a Pandemic: Hydroxychloroquine Prophylaxis in COVID-19 Household Contacts
An aDaptive, multicEnter, rAndomized, Open-Label, Controlled Trial to Assess Effectiveness and Safety of Quinine Sulfate for COVID-19 in Hospitalized Adults
Who cites it
1,116 citing papers in PubMed, 4 syntheses or guidelines pooled it.
- Repurposed drug studies on the primary prevention of SARS-CoV-2 infection during the pandemic: systematic review and meta-analysis.BMJ open respiratory research · 2023Pooled it
- Hydroxychloroquine for Non-Hospitalized COVID-19 Patients: A Systematic Review and Meta-Analysis of Randomized Clinical Trials.Arquivos brasileiros de cardiologia · 2023Pooled it
- Hydroxychloroquine/chloroquine and the risk of acute kidney injury in COVID-19 patients: a systematic review and meta-analysis.Renal failure · 2022Pooled it
- Hydroxychloroquine in the treatment of coronavirus disease 2019: Rapid updated systematic review and meta-analysis.Reviews in medical virology · 2022Pooled it
- The PRINCIPLE randomised controlled open label platform trial of hydroxychloroquine for treating COVID19 in community based patients at high risk.Scientific reports · 2025Trial
- Evaluation of hydroxychloroquine or chloroquine for the prevention of COVID-19 (COPCOV): A double-blind, randomised, placebo-controlled trial.PLoS medicine · 2024Trial
- Immunosuppression by hydroxychloroquine: mechanistic proof in in vitro experiments but limited systemic activity in a randomized placebo-controlled clinical pharmacology study.Immunologic research · 2023Trial
- Hydroxychloroquine for pre-exposure prophylaxis of COVID-19 in health care workers: a randomized, multicenter, placebo-controlled trial Healthcare Worker Exposure Response and Outcomes of Hydroxychloroquine (HERO-HCQ).International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2023Trial
- Trial
- Effect of hydroxychloroquine on the cardiac ventricular repolarization: A randomized clinical trial.British journal of clinical pharmacology · 2022Trial
- Testing the feasibility of operationalizing a prospective, randomized trial with remote cardiac safety EKG monitoring during a pandemic.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2022Trial
- Drug Repurposing as a Broad-Spectrum Strategy Against Coronaviruses: Frontiers in Mechanisms and Clinical Translation.Viruses · 2026Review
- Nasal inhalation of antiviral microparticulate powders to target early infection of upper airways.Drug delivery and translational research · 2026Article
- Sichuan pepper, Zanthoxylum bungeanum Maxim., suppresses human coronavirus OC43 infection by inhibiting viral entry and impairing autolysosome accumulation.Chinese medicine · 2026Article
- Electrochemical Sensor Based on a Composite of Babassu Starch, Carbon Black, and Cobalt Phthalocyanine for the Detection of Hydroxychloroquine.ACS omega · 2026Article
- How Can Pharmacology Help Us Overcome the Challenges of Drug Repositioning as Antivirals to Treat Emerging Pathogens? The Example of Covid-19.Clinical and translational science · 2026Review
- Strategic Preparedness of Broad-Spectrum Antivirals for Rapid Response Towards Next Pandemics.Small science · 2026Article
- Repurposing Antimalarials for Oral Cancer: Selective Efficacy of Hydroxychloroquine on Gingival Squamous Cell Carcinoma.International journal of molecular sciences · 2025Article
- Catalpol: An Iridoid Glycoside With Potential in Combating Cancer Development and Progression-A Comprehensive Review.Phytotherapy research : PTR · 2025Review
- Disruption of Spike Priming in Virus Entry: Tetrandrine as a Pan-Coronavirus Inhibitor.MedComm · 2025Article
1,056 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
10 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PubMed holds no abstract for this paper.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.