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Norwegian Coronavirus Disease 2019 (NO COVID-19) Pragmatic Open label Study to assess early use of hydroxychloroquine sulphate in moderately severe hospitalised patients with coronavirus disease 2019: A structured summary of a study protocol for a randomised controlled trial
Trials volume 21, Article number: 485 (2020)
The hypothesis of the study is that treatment with hydroxychloroquine sulphate in hospitalised patients with coronavirus disease 2019 (Covid-19) is safe and will accelerate the virological clearance rate for patients with moderately severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) when compared to standard care. Furthermore, we hypothesize that early treatment with hydroxychloroquine sulphate is associated with more rapid resolve of clinical symptoms as assessed by the National Early Warning Score 2 (NEWS2), decreased admission rate to intensive care units and mortality, and improvement in protein biomarker profiles (C-reactive protein, markers of renal and hepatic injury, and established cardiac biomarkers like cardiac troponin and B-type natriuretic peptide).
The study is a two-arm, open label, pragmatic randomised controlled group sequential adaptive trial designed to assess the effect on viral loads and clinical outcome of hydroxychloroquine sulphate therapy in addition to standard care compared to standard care alone in patients with established Covid-19. By utilizing resources already paid for by the hospitals (physicians and nurses in daily clinical practice), this pragmatic trial can include a larger number of patients over a short period of time and at a lower cost than studies utilizing traditional randomized controlled trial designs with an external study organization. The pragmatic approach will enable swift initiation of randomisation and allocation to treatment.
Patients will be recruited from all inpatients at Akershus University Hospital, Lørenskog, Norway. Electronic real-time surveillance of laboratory reports from the Department of Microbiology will be examined regularly for SARS-CoV-2 positive subjects. All of the following conditions must apply to the prospective patient at screening prior to inclusion: (1) Hospitalisation; (2) Adults 18 years or older; (3) Moderately severe Covid-19 disease (NEWS2 of 6 or less); (4) SARS-CoV-2 positive nasopharyngeal swab; (5) Expected time of hospitalisation > 48 hours; and (6) Signed informed consent must be obtained and documented according to Good Clinical Practice guidelines of the International Conference on Harmonization, and national/local regulations. Patients will be excluded from participation in the study if they meet any of the following criteria: (1) Requiring intensive care unit admission at screening; (2) History of psoriasis; (3) Known adverse reaction to hydroxychloroquine sulphate; (4) Pregnancy; or (5) Prolonged corrected QT interval (>450 ms). Clinical data, including standard hospital biochemistry, medical therapy, vital signs, NEWS2, and microbiology results (including blood culture results and reverse transcriptase polymerase chain reaction [RT-PCR] for other upper airway viruses), will be automatically extracted from the hospital electronic records and merged with the study specific database.
Intervention and comparator
Included patients will be randomised in a 1:1 ratio to (1) standard care with the addition of 400 mg hydroxychloroquine sulphate (PlaquenilTM) twice daily for seven days or (2) standard care alone.
The primary endpoint of the study is the rate of decline in SARS-CoV-2 viral load in oropharyngeal samples as assessed by RT-PCR in samples collected at baseline, 48 and 96 hours after randomization and administration of drug for the intervention arm. Secondary endpoints include change in NEWS2 at 96 hours after randomisation, admission to intensive care unit, mortality (in-hospital, and at 30 and 90 days), duration of hospital admission, clinical status on a 7-point ordinal scale 14 days after randomization ( Death  Hospitalised, on invasive mechanical ventilation or extracorporeal membrane oxygenation  Hospitalised, on non-invasive ventilation or high flow oxygen devices  Hospitalized, requiring supplemental oxygen  Hospitalised, not requiring supplemental oxygen  Not hospitalized, but unable to resume normal activities  Not hospitalised, with resumption of normal activities), and improvement in protein biomarker profiles (C-reactive protein, markers of renal and hepatic injury, and established cardiac biomarkers like cardiac troponin and B-type natriuretic peptide) at 96 hours after randomization.
Eligible patients will be allocated in a 1:1 ratio, using a computer randomisation procedure. The allocation sequence has been prepared by an independent statistician.
Open label randomised controlled pragmatic trial without blinding, no active or placebo control. The virologist assessing viral load in the oropharyngeal samples and the statistician responsible for analysis of the data will be blinded to the treatment allocation for the statistical analyses.
Numbers to be randomized (sample size)
This is a group sequential adaptive trial where analyses are planned after 51, 101, 151 and 202 completed patients, with a maximum sample size of 202 patients (101 patients allocated to intervention and standard care and 101 patients allocated to standard care alone).
Protocol version 1.3 (March 26, 2020). Recruitment of first patient on March 26, 2020, and 51 patients were included as per April 28, 2020. Study recruitment is anticipated to be completed by July 2020.
ClinicalTrials.gov number, NCT04316377. Trial registered March 20, 2020.
The full protocol is attached as an additional file, accessible from the Trials website (Additional file 1). In the interest in expediting dissemination of this material, the familiar formatting has been eliminated; this Letter serves as a summary of the key elements of the full protocol.
Availability of data and materials
The final trial dataset will be made available to the trial statistician at the Research Support Services, Clinical Trial Unit, Oslo University Hospital, Oslo, Norway, who will perform trial statistical analyses according to the predefined statistical analysis plan.
We thank Shuo-Wang Qiao (Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway) and Jan Haug Anonsen (NORCE Norwegian Research Centre AS, Bergen, Norway) for providing virus transport medium. We thank Randi Kristoffersen and Lisbeth Johnsen (Clinical Trial Unit, Akershus University Hospital, Lørenskog, Norway) for help with trial planning, management and regulatory approvals. We thank Jannicke Dokken, Merete Moen Tollefsen, Jessica Andreassen and Ingunn Melkeraaen (Department of Infectious Diseases, Division of Medicine, Akershus University Hospital, Lørenskog, Norway) for patient inclusion and follow-up. We thank all collaborators at the Clinical Trial Unit, Oslo University Hospital, Oslo, Norway, for valuable help with trial management, data handling and monitoring, and preparation of the electronic case report form. We thank all participating physicians at the Akershus University Hospital, Lørenskog, Norway, for help with patient screening and inclusion. And most importantly, we thank all the patients who are willing to participate in the trial.
There is no trial-specific funding apart from the regular salaries provided to the investigators by the University of Oslo, Akershus University Hospital, Oslo University Hospital, and Østfold Hospital Trust. The funding bodies had no role in the design of the study, collection, analysis, and interpretation of data or in writing the final trial manuscript.
Ethics approval and consent to participate
The study protocol was approved by the Regional Committees for Medical Research Ethics - South East Norway (REC 121446) on March 23, 2020, and the Norwegian Medicines Agency on March 18, 2020. The study is performed in accordance with the Declaration of Helsinki and Good Clinical Practice guidelines of the International Conference on Harmonization. All study participants will provide written informed consent before study inclusion.
Consent for publication
The authors declare that they have no competing interests.
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Lyngbakken, M.N., Berdal, JE., Eskesen, A. et al. Norwegian Coronavirus Disease 2019 (NO COVID-19) Pragmatic Open label Study to assess early use of hydroxychloroquine sulphate in moderately severe hospitalised patients with coronavirus disease 2019: A structured summary of a study protocol for a randomised controlled trial. Trials 21, 485 (2020). https://doi.org/10.1186/s13063-020-04420-0
- Randomized controlled trial
- Pragmatic trial
- Polymerase chain reaction
- Viral load
- Oropharyngeal sampling