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Hydroxychloroquine for COVID-19: A Single Center, Retrospective Cohort Study

Ho et al., Malaysian Journal of Medicine and Health Sciences, doi:10.47836/mjmhs.19.2.3
Mar 2023  
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Progression -890% Improvement Relative Risk HCQ for COVID-19  Ho et al.  LATE TREATMENT Is late treatment with HCQ beneficial for COVID-19? Retrospective 325 patients in Malaysia Higher progression with HCQ (p=0.025) c19hcq.org Ho et al., Malaysian J. Medicine and H.., Mar 2023 FavorsHCQ Favorscontrol 0 0.5 1 1.5 2+
HCQ for COVID-19
1st treatment shown to reduce risk in March 2020, now with p < 0.00000000001 from 419 studies, recognized in 46 countries.
No treatment is 100% effective. Protocols combine treatments.
5,100+ studies for 109 treatments. c19hcq.org
Retrospective 325 hospitalized COVID-19 patients in Malaysia, showing higher progression with HCQ, however the groups are not comparable. 17 HCQ vs. 3 control patients had severity category ≥3 at baseline (7 vs. 0 for severity ≥4).
This study is excluded in the after exclusion results of meta analysis: excessive unadjusted differences between groups.
risk of progression, 889.7% higher, RR 9.90, p = 0.03, treatment 4 of 91 (4.4%), control 1 of 234 (0.4%), odds ratio converted to relative risk.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Ho et al., 31 Mar 2023, retrospective, Malaysia, peer-reviewed, 11 authors, average treatment delay 8.05 days.
This PaperHCQAll
Hydroxychloroquine for COVID-19: A Single Center, Retrospective Cohort Study
Wen Chung Ho, Wei Xin Yong, Khai Shin Tan, Woh Yon Mak, Mandeep Kaur Gill, Agnes Hui, Ching Lok, Shazwani Zulkifli, Salmah Idris, Erwan Khairil, Khalid, Loon Chee, Leong, Kang Nien How, Nien Kang, MRCP How
doi:10.47836/mjmhs19.2.3
Introduction: The outbreak of coronavirus disease in December 2019 called for a rapid solution, leading to repurposing of existing drugs. Due to its immunomodulatory effect and antiviral properties, hydroxychloroquine (HCQ) has been used in early 2020 for treatment of COVID-19 patients. This study was conducted to evaluate the treatment outcome of HCQ monotherapy in Malaysia. Methods: A retrospective cohort study was conducted in COVID-19 ward in Hospital Kuala Lumpur (HKL), from March to April 2020. A total of 446 COVID-19 patients were recruited, only 325 patients were finally included for analysis. Statistical analysis was done using SPSS, with a significant value set at p<0.05. Results: The mean age of the patients were 38.5 ±15.5. They were majority male, (n=210, 64.6%) Malaysian (n=239, 73.5%) and Malay ethnicity (n=204, 62.8%). Ninety-one (28%) patients received HCQ monotherapy. HCQ monotherapy was associated with worse outcome (OR: 10.29, 95% CI 1.17-90.80). There was a significant difference in mean length of stay between those with and without HCQ treatment (t323=5.868, p<0.001, 95% CI, 2.56-5.31). The average length of stay for HCQ treated group was 3.84 days longer than those without treatment. 6.6% of the patient receiving HCQ monotherapy encountered adverse drug effects. Conclusion: Similar to study reported worldwide, our study demonstrated that HCQ did not improve length of stay and the outcome of COVID-19 patients.
References
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Axfors, Schmitt, Janiaud, Van't Hooft, Abd-Elsalam et al., Mortality outcomes with hydroxychloroquine and chloroquine in Covid-19: an international collaborative meta-analysis of randomized trials, Nat Commun, doi:10.1038/s41467-021-22446-z
Biran, Ip, Ahn, Go, Wang et al., Tocilizumab among intensive care unit COVID-19 patients: a multi-center observational study, Lancet Rheumatol, doi:10.1016/S2665-9913(20)30277-0
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Costedoat-Chalumeau, Hulot, Amoura, Leroux, Lechat et al., Heart conduction disorders related to antimalarials toxicity: An analysis of electrocardiograms in 85 patients treated with hydroxychloroquine for connective tissue diseases, Rheumatology, doi:10.1093/rheumatology/kel402
Gautret, Lagier, Parola, Hoang, Meddeb et al., Clinical and microbiological effect of a combination of hydroxychloroquine and azithromycin in 80 COVID-19 patients with at least a six-day follow up: A pilot observational study, Travel Med Infect Dis, doi:10.1016/j.tmaid.2020.101663
Gautret, Lagier, Parola, Hoang, Meddeb et al., Hydroxychloroquine and azithromycin as a treatment of COVID-19: results of an open-label non-randomized clinical trial, Int J Antimicrob Agents, doi:10.1016/j.ijantimicag.2020.105949
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Liu, Cao, Xu, Wang, Zhang et al., Hydroxychloroquine, a less toxic derivative of chloroquine, is effective in inhibiting SARS-CoV-2 infection in vitro, Cell Discov, doi:10.1038/s41421-020-0156-0
Maciorowski, Idrissi, Gupta, Medernach, Burns et al., A Review of the Preclinical and Clinical Efficacy of Remdesivir, Hydroxychloroquine, and Lopinavir-Ritonavir Treatments against COVID-19
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Ornstein, Sperber, The antiinflammatory and antiviral effects of hydroxychloroquine in two patients with acquired immunodeficiency syndrome and active inflammatory arthritis, Arthritis Rheum, doi:10.1002/art.1780390122
Pan, Peto, Henao-Restrepo, Preziosi, Sathiyamoorthy et al., Repurposed Antiviral Drugs for Covid-19 -Interim WHO Solidarity Trial Results, N Engl J Med, doi:10.1056/NEJMoa2023184
Recovery Collaborative Group, Horby, Lim, Emberson, Mafham et al., Dexamethasone in Hospitalized Patients with Covid-19, N Engl J Med, doi:10.1056/NEJMoa2021436
Recovery Collaborative Group, Horby, Mafham, Linsell, Bell et al., Effect of Hydroxychloroquine in Hospitalized Patients with Covid-19, N Engl J Med, doi:10.1056/NEJMoa2022926
Rismanbaf, Zarei, Liver and Kidney Injuries in COVID-19 and Their Effects on Drug Therapy
Schrezenmeier, Dörner, Mechanisms of action of hydroxychloroquine and chloroquine: Implications for rheumatology, Nat Rev Rheumatol, doi:10.1038/s41584-020-0372-x
Shimizu, Yamamoto, Homma, Ishida, Effect of chloroquine on the growth of animal viruses, Arch Gesamte Virusforsch, doi:10.1007/BF01250299
Srinivasa, Tosounidou, Gordon, Increased incidence of gastrointestinal side effects in patients taking hydroxychloroquine: A brand-related issue?, J Rheumatol, doi:10.3899/jrheum.161063
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Statistical ' 'analysis was done using SPSS, with a significant value set at p&lt;0.05. Results: The mean ' 'age of the patients were 38.5 ±15.5. They were majority male, (n=210, 64.6%) Malaysian ' '(n=239, 73.5%) and Malay ethnicity (n=204, 62.8%). Ninety-one (28%) patients received HCQ ' 'monotherapy. HCQ monotherapy was associated with worse outcome (OR: 10.29, 95% CI ' '1.17-90.80). There was a significant difference in mean length of stay between those with and ' 'without HCQ treatment (t323=5.868, p&lt;0.001, 95% CI, 2.56-5.31). The average length of stay ' 'for HCQ treated group was 3.84 days longer than those without treatment. 6.6% of the patient ' 'receiving HCQ monotherapy encountered adverse drug effects. 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SLAS Discov. 2020;25(10):1108-1122. doi: ' '10.1177/2472555220958385.', 'DOI': '10.1177/2472555220958385'}, { 'key': 'ref3', 'doi-asserted-by': 'publisher', 'unstructured': '4.\tAbolghasemi E, Moosa-Kazemi SH, Davoudi M, Reisi A, Satvat MT. ' 'Comparative study of chloroquine and quinine on malaria rodents and ' 'their effects on the mouse testis. Asian Pac J Trop Biomed. ' '2012;2:311–314. doi: 10.1016/S2221-1691(12)60030-6.', 'DOI': '10.1016/s2221-1691(12)60030-6'}, { 'key': 'ref4', 'doi-asserted-by': 'publisher', 'unstructured': '5.\tMisra D, Gasparyan A.Y, Zimba O. Benefits and adverse effects of ' 'hydroxychloroquine, methotrexate and colchicine: searching for ' 'repurposable drug candidates. Rheumatol Int. 2020;40:1741–1751. doi: ' '10.1007/s00296-020-04694-2.', 'DOI': '10.1007/s00296-020-04694-2'}, { 'key': 'ref5', 'doi-asserted-by': 'publisher', 'unstructured': '6.\tShimizu Y, Yamamoto S, Homma M, Ishida N. Effect of chloroquine on ' 'the growth of animal viruses. Arch Gesamte Virusforsch. ' '1972;36(1):93-104. doi: 10.1007/BF01250299.', 'DOI': '10.1007/bf01250299'}, { 'key': 'ref6', 'doi-asserted-by': 'publisher', 'unstructured': '7.\tWang M, Cao R, Zhang L, Yang X, Liu J, Xu M, et al. Remdesivir and ' 'chloroquine effectively inhibit the recently emerged novel coronavirus ' '(2019-nCoV) in vitro. Cell Res 2020;30:269-271. ' 'doi:10.1038/s41422-020-0282-0.', 'DOI': '10.1038/s41422-020-0282-0'}, { 'key': 'ref7', 'doi-asserted-by': 'publisher', 'unstructured': '8.\tYao X, Ye F, Zhang M, Cui C, Huang B, Niu P, et al. In vitro ' 'antiviral activity and projection of optimized dosing design of ' 'hydroxychloroquine for the treatment of Severe Acute Respiratory ' 'Syndrome Coronavirus 2 (SARS-CoV-2). Clin Infect Dis. ' '2020;71(15):732-739. doi: 10.1093/cid/ciaa237.', 'DOI': '10.1093/cid/ciaa237'}, { 'key': 'ref8', 'doi-asserted-by': 'publisher', 'unstructured': '9.\tLiu J, Cao R, Xu M, Wang X, Zhang H, Hu H, et al. ' 'Hydroxychloroquine, a less toxic derivative of chloroquine, is effective ' 'in inhibiting SARS-CoV-2 infection in vitro. Cell Discov. 2020;6:16. ' 'doi: 10.1038/s41421-020-0156-0.', 'DOI': '10.1038/s41421-020-0156-0'}, { 'key': 'ref9', 'doi-asserted-by': 'publisher', 'unstructured': '10.\tGautret P, Lagier JC, Parola P, Hoang VT, Meddeb L, Mailhe M, et ' 'al. Hydroxychloroquine and azithromycin as a treatment of COVID-19: ' 'results of an open-label non-randomized clinical trial. Int J Antimicrob ' 'Agents. 2020;56(1):105949. doi: 10.1016/j.ijantimicag.2020.105949.', 'DOI': '10.1016/j.ijantimicag.2020.105949'}, { 'key': 'ref10', 'doi-asserted-by': 'publisher', 'unstructured': '11.\tGautret P, Lagier JC, Parola P, Hoang VT, Meddeb L, Sevestre J, et ' 'al. Clinical and microbiological effect of a combination of ' 'hydroxychloroquine and azithromycin in 80 COVID-19 patients with at ' 'least a six-day follow up: A pilot observational study. Travel Med ' 'Infect Dis. 2020;34:101663. doi: 10.1016/j.tmaid.2020.101663.', 'DOI': '10.1016/j.tmaid.2020.101663'}, { 'key': 'ref11', 'doi-asserted-by': 'publisher', 'unstructured': '12.\tChen Z, Hu J, Zhang Z, Jiang S, Han S, Yan D, et al. Efficacy of ' 'hydroxychloroquine in patients with COVID-19: results of a randomized ' 'clinical trial. MedRxiv. 2020;03.22.20040758. doi: ' '10.1101/2020.03.22.20040758', 'DOI': '10.1101/2020.03.22.20040758'}, { 'key': 'ref12', 'doi-asserted-by': 'publisher', 'unstructured': '13.\tWHO Solidarity Trial Consortium, Pan H, Peto R, Henao-Restrepo AM, ' 'Preziosi MP, Sathiyamoorthy V, Abdool Karim Q, et al. Repurposed ' 'Antiviral Drugs for Covid-19 - Interim WHO Solidarity Trial Results. N ' 'Engl J Med. 2021;384(6):497-511. doi: 10.1056/NEJMoa2023184.', 'DOI': '10.1056/nejmoa2023184'}, { 'key': 'ref13', 'doi-asserted-by': 'publisher', 'unstructured': '14.\tRECOVERY Collaborative Group, Horby P, Mafham M, Linsell L, Bell ' 'JL, Staplin N, Emberson JR, et al. Effect of Hydroxychloroquine in ' 'Hospitalized Patients with Covid-19. N Engl J Med. ' '2020;383(21):2030-2040. doi: 10.1056/NEJMoa2022926.', 'DOI': '10.1056/nejmoa2022926'}, { 'key': 'ref14', 'doi-asserted-by': 'crossref', 'unstructured': '15.\tAxfors C, Schmitt AM, Janiaud P, Van’t Hooft J, Abd-Elsalam S, Abdo ' 'EF, et al. Mortality outcomes with hydroxychloroquine and chloroquine in ' 'Covid-19: an international collaborative meta-analysis of randomized ' 'trials. Nat Commun. 2021;12(1):2349. doi: 10.1038/s41467-021-22446-z.', 'DOI': '10.1038/s41467-021-22446-z'}, { 'key': 'ref15', 'doi-asserted-by': 'publisher', 'unstructured': '16.\tCoronavirus (COVID-19) Update: FDA revokes emergency use ' 'authorization for chloroquine and hydroxychloroquine. Published June 15 ' '2020. Accessed on February 22 2022. Available from: ' 'https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-revokes-emergency-use-authorization-chloroquine-and#:~:text=Today%2C%20the%20U.S.%20Food%20and,clinical%20trial%20was%20unavailable%2C%20or', 'DOI': '10.1089/clinomi.08.02.12'}, { 'key': 'ref16', 'doi-asserted-by': 'publisher', 'unstructured': '17.\tCOVID-19 management guidelines in Malaysia No 5/2020. Annex 2e. ' 'Clinical management of confirmed COVID-19 case in adult and paediatric. ' 'Published August 13 2021. Accessed on February 22 2022. 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Late treatment
is less effective
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