Convalescent Plasma Trial in COVID -19 Patients

Use of Convalescent Plasma Therapy for COVID-19 Patients With Hypoxia: a Prospective Randomized Trial

Salmaniya Medical Complex, Bahrain Defence Force Hospital, Mohammed Bin Khalifa Bin Sulman Al Khalifa Cardiac Centre, Awali

Plasma therapy using convalescent plasma has been shown to be effective in severe acute respiratory syndrome, Ebola virus infection and in H1N1 influenza. More recently there has been a report of the use of convalescent plasma in the treatment of 5 ventilated COVID-19 patients with the suggestion of expedited recovery as the patients improved 1 week after the transfusion. However, this was not a clinical trial and the patients were on other antiviral medication.; therefore, there is a need to undertake such a trial to see if deploying plasma with SARS-CoV-2 neutralizing antibody has utility in managing patients infected with COVID-19 in respiratory distress. The objective of this pilot study is to compare plasma therapy using convalescent plasma with antibody against SARS-CoV-2 to usual supportive therapy in COVID-19 patients with pneumonia and hypoxia, and to determine if the clinical course is improved. The difference between groups will allow an effect size to be determined for a definitive clinical trial.

Coronavirus disease 2019 (COVID-19) is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and has developed into a pandemic with serious global public health and economic sequelae. As of March 30, 2020, over 750,000 cases have been confirmed worldwide leading to over 34,000 deaths (https://coronavirus.jhu.edu/map.html). There is no current vaccine available, but there have been a number of reports of medication such as hydroxychloroquine having antiviral properties with efficacy against SARS-CoV-2. Plasma therapy using convalescent plasma has been shown to be effective in severe acute respiratory syndrome, Ebola virus infection and in H1N1 influenza. More recently there has been a report of the use of convalescent plasma in the treatment of 5 ventilated COVID-19 patients with the suggestion of expedited recovery as the patients improved 1 week after the transfusion. However, this was not a clinical trial and the patients were on other antiviral medication; therefore, there is a need to undertake such a trial to see if deploying plasma with SARS-CoV-2 neutralizing antibody has utility in managing patients infected with COVID-19 in respiratory distress. The objective of this pilot study is to compare plasma therapy using convalescent plasma with antibody against SARS-CoV-2 to usual supportive therapy in COVID-19 patients with pneumonia and hypoxia, and to determine if the clinical course is improved. The difference between groups will allow an effect size to be determined for a definitive clinical trial Could using convalescent plasma transfusion, from recovered COVID19 patients with antibody against COVID-19 be beneficial in treatment of COVID19 patients with hypoxia and pneumonia, in order to avoid or delay the need for invasive ventilation? This is a prospective, interventional and randomized open label trial involving 40 patients with COVID-19 who are in respiratory distress, with the criteria that all require oxygen therapy and have radiological evidence of pneumonia, 20 of whom will receive a single transfusion of convalescent patient plasma plus routine care, compared to 20 COVID-19 patients who will receive routine care alone.

This is a prospective, interventional and randomized open label trial involving 40 patients with COVID-19 who are in respiratory distress, with the criteria that all require oxygen therapy and have radiological evidence of pneumonia, 20 of whom will receive a transfusion of convalescent patient plasma plus routine care, compared to 20 COVID-19 patients who will receive routine care alone.

convalescent patient plasma 400ml given as 200ml over 2 hours in 2 consecutive days, plus routine local standard of care

A change in lactate dehydrogenase as a measure of an improvement in the severity of the disease process

A change in brain naturetic peptide as a measure of an improvement in the severity of the disease process

Inclusion Criteria: COVID-19 diagnosis Hypoxia, (Oxygen saturation of less than or equal 92% or PO2 < 60mmHg on arterial blood gas analysis) and patient requiring oxygen therapy Evidence of infiltrates on Chest Xray or CT scan Able to give informed consent Patients between the ages of 21 and above with no upper age. Exclusion Criteria: Patients with mild disease not requiring oxygen therapy Patients with normal CXR & CT scan Patients requiring ventilatory support Patients with a history of allergy to plasma, sodium citrate or methylene blue Patients with a history of autoimmune disease or selective IGA deficiency.

Monitoring, audits, and REC review will be permitted and provide direct access to source data and documents. The Lead PI and the researchers assigned by him will have access to the stored data/specimens. Only the Lead PI and the researchers assigned working on this study will be eligible to obtain the data/specimens from the participants during data collection.

Dr Manaf will act as the data custodian and is responsible for the storage, handling and quality of the study data. Data will be collected in the case report form to allow for cross referencing to check validity. Study documents (paper and electronic) will be retained in a secure (kept locked when not in use) location during and after the trial has finished. All essential documents including source documents will be retained for a period of 5 years after study completion (last patient, last study point). A label stating the date after which the documents can be destroyed will be placed on the inside front cover of the case notes of trial participants.

Study documents (paper and electronic) will be retained in a secure (kept locked when not in use) location during and after the trial has finished.

Soo YO, Cheng Y, Wong R, Hui DS, Lee CK, Tsang KK, Ng MH, Chan P, Cheng G, Sung JJ. Retrospective comparison of convalescent plasma with continuing high-dose methylprednisolone treatment in SARS patients. Clin Microbiol Infect. 2004 Jul;10(7):676-8. doi: 10.1111/j.1469-0691.2004.00956.x.

Sahr F, Ansumana R, Massaquoi TA, Idriss BR, Sesay FR, Lamin JM, Baker S, Nicol S, Conton B, Johnson W, Abiri OT, Kargbo O, Kamara P, Goba A, Russell JB, Gevao SM. Evaluation of convalescent whole blood for treating Ebola Virus Disease in Freetown, Sierra Leone. J Infect. 2017 Mar;74(3):302-309. doi: 10.1016/j.jinf.2016.11.009. Epub 2016 Nov 17.

Hung IF, To KK, Lee CK, Lee KL, Chan K, Yan WW, Liu R, Watt CL, Chan WM, Lai KY, Koo CK, Buckley T, Chow FL, Wong KK, Chan HS, Ching CK, Tang BS, Lau CC, Li IW, Liu SH, Chan KH, Lin CK, Yuen KY. Convalescent plasma treatment reduced mortality in patients with severe pandemic influenza A (H1N1) 2009 virus infection. Clin Infect Dis. 2011 Feb 15;52(4):447-56. doi: 10.1093/cid/ciq106. Epub 2011 Jan 19.

Shen C, Wang Z, Zhao F, Yang Y, Li J, Yuan J, Wang F, Li D, Yang M, Xing L, Wei J, Xiao H, Yang Y, Qu J, Qing L, Chen L, Xu Z, Peng L, Li Y, Zheng H, Chen F, Huang K, Jiang Y, Liu D, Zhang Z, Liu Y, Liu L. Treatment of 5 Critically Ill Patients With COVID-19 With Convalescent Plasma. JAMA. 2020 Apr 28;323(16):1582-1589. doi: 10.1001/jama.2020.4783.

Delang L, Abdelnabi R, Neyts J. Favipiravir as a potential countermeasure against neglected and emerging RNA viruses. Antiviral Res. 2018 May;153:85-94. doi: 10.1016/j.antiviral.2018.03.003. Epub 2018 Mar 7.

Dong L, Hu S, Gao J. Discovering drugs to treat coronavirus disease 2019 (COVID-19). Drug Discov Ther. 2020;14(1):58-60. doi: 10.5582/ddt.2020.01012.

Cai Q, Yang M, Liu D, Chen J, Shu D, Xia J, Liao X, Gu Y, Cai Q, Yang Y, Shen C, Li X, Peng L, Huang D, Zhang J, Zhang S, Wang F, Liu J, Chen L, Chen S, Wang Z, Zhang Z, Cao R, Zhong W, Liu Y, Liu L. Experimental Treatment with Favipiravir for COVID-19: An Open-Label Control Study. Engineering (Beijing). 2020 Oct;6(10):1192-1198. doi: 10.1016/j.eng.2020.03.007. Epub 2020 Mar 18.

Gautret P, Lagier JC, Parola P, Hoang VT, Meddeb L, Mailhe M, Doudier B, Courjon J, Giordanengo V, Vieira VE, Tissot Dupont H, Honore S, Colson P, Chabriere E, La Scola B, Rolain JM, Brouqui P, Raoult D. Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial. Int J Antimicrob Agents. 2020 Jul;56(1):105949. doi: 10.1016/j.ijantimicag.2020.105949. Epub 2020 Mar 20.

Birkett MA, Day SJ. Internal pilot studies for estimating sample size. Stat Med. 1994 Dec 15-30;13(23-24):2455-63. doi: 10.1002/sim.4780132309.

Senn SJ. Covariate imbalance and random allocation in clinical trials. Stat Med. 1989 Apr;8(4):467-75. doi: 10.1002/sim.4780080410.

Senn S. Testing for baseline balance in clinical trials. Stat Med. 1994 Sep 15;13(17):1715-26. doi: 10.1002/sim.4780131703.

Knol MJ, Groenwold RH, Grobbee DE. P-values in baseline tables of randomised controlled trials are inappropriate but still common in high impact journals. Eur J Prev Cardiol. 2012 Apr;19(2):231-2. doi: 10.1177/1741826711421688. No abstract available.

Piechotta V, Iannizzi C, Chai KL, Valk SJ, Kimber C, Dorando E, Monsef I, Wood EM, Lamikanra AA, Roberts DJ, McQuilten Z, So-Osman C, Estcourt LJ, Skoetz N. Convalescent plasma or hyperimmune immunoglobulin for people with COVID-19: a living systematic review. Cochrane Database Syst Rev. 2021 May 20;5(5):CD013600. doi: 10.1002/14651858.CD013600.pub4.

AlQahtani M, Abdulrahman A, Almadani A, Alali SY, Al Zamrooni AM, Hejab AH, Conroy RM, Wasif P, Otoom S, Atkin SL, Abduljalil M. Randomized controlled trial of convalescent plasma therapy against standard therapy in patients with severe COVID-19 disease. Sci Rep. 2021 May 11;11(1):9927. doi: 10.1038/s41598-021-89444-5.