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Effectiveness of famotidine on the risk of poor prognosis in patients with COVID-19: A nationwide cohort study in Korea

Kwon et al., Heliyon, doi:10.1016/j.heliyon.2023.e16171
May 2023  
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Progression -107% Improvement Relative Risk Progression (b) -256% Oxygen therapy -109% Famotidine for COVID-19  Kwon et al.  Prophylaxis Is prophylaxis with famotidine beneficial for COVID-19? Retrospective 6,556 patients in South Korea (Jul - Dec 2020) Higher progression (p=0.063) and higher oxygen therapy (p=0.069), not sig. c19early.org Kwon et al., Heliyon, May 2023 Favorsfamotidine Favorscontrol 0 0.5 1 1.5 2+
Famotidine for COVID-19
26th treatment shown to reduce risk in October 2021
 
*, now with p = 0.00026 from 30 studies, recognized in 2 countries.
No treatment is 100% effective. Protocols combine treatments. * >10% efficacy, ≥3 studies.
4,400+ studies for 79 treatments. c19early.org
PSM retrospective 6,556 COVID-19 patients in South Korea, showing higher risk of poor outcomes with famotidine vs. other H2-blocker use.
risk of progression, 107.0% higher, OR 2.07, p = 0.06, treatment 204, control 204, adjusted per study, ICU, mechanical ventilation, or death, famotidine vs. other H2-blocker use, multivariable, RR approximated with OR.
risk of progression, 256.0% higher, OR 3.56, p = 0.04, treatment 204, control 204, adjusted per study, high oxygen, ICU, mechanical ventilation, or death, famotidine vs. other H2-blocker use, multivariable, RR approximated with OR.
risk of oxygen therapy, 109.0% higher, OR 2.09, p = 0.07, treatment 204, control 204, adjusted per study, famotidine vs. other H2-blocker use, multivariable, RR approximated with OR.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Kwon et al., 31 May 2023, retrospective, South Korea, peer-reviewed, 8 authors, study period 1 July, 2020 - 31 December, 2020. Contact: shinji@yuhs.ac, knstar@ewha.ac.kr, yonkkang@gmail.com.
This PaperFamotidineAll
Effectiveness of famotidine on the risk of poor prognosis in patients with COVID-19: A nationwide cohort study in Korea
Rosie Kwon, Hyung Jun Kim, Seung Won Lee, Ai Koyanagi, Jae Il Shin, Tae-Jin Song, Dong Keon Yon, Lee Smith
Heliyon, doi:10.1016/j.heliyon.2023.e16171
Famotidine has been proposed as a promising candidate for the treatment of coronavirus disease 2019 . However, there is limited research on the association of famotidine with the poor prognosis of COVID-19. Methods: The Korean nationwide cohort included 6,556 patients who tested positive on RT-PCR for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The poor COVID-19-related outcomes were defined on the basis of having encountered the composite outcome of high oxygen therapy, intensive care unit admission, administration of mechanical ventilation, or death. In addition, we performed exposure-driven propensity score matching for no H 2 -blocker use versus current famotidine use, and other H 2 -blocker use versus current famotidine use. Results: 4,785 (73.0%) patients did not use a H 2 -blocker, 393 (6.0%) patients were currently used famotidine, and 1,292 (19.7%) patients currently used H 2 -blocker other than famotidine. In multivariable analysis after matching (no H 2 -blocker use versus current famotidine use), there was no significant association between current famotidine use and composite outcomes (adjusted odd ratios [aOR]: 1.30, 95% confidence interval [CI]: 0.55-3.06). On the other hand, another matched cohort (other H 2 -blocker use versus current famotidine use), demonstrated a positive association between current famotidine use and composite outcomes (aOR: 3.56, 95% CI: 1. 03-12.28
Author contribution statement Rosie Kwon, Hyung Jun Kim,Seung Won Lee,: Performed the experiments; Analyzed and interpreted the data; Wrote the paper. Lee Smith, Ai Koyanagi: Contributed reagents, materials, analysis tools or data. Jae Il Shin, Tae-Jin Song, Dong Keon Yon: Conceived and designed the experiments; Analyzed and interpreted the data; Contributed reagents, materials, analysis tools or data; Wrote the paper. Table 3 Propensity-score-matching subgroup analyses for difference in length of stay at hospitalization according to famotidine use using analysis-ofcovariance model. Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Appendix A. Supplementary data Supplementary data to this article can be found online at https://doi.org/10.1016/j.heliyon.2023.e16171. References
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