TY - JOUR TI - A phase ii study on the use of convalescent plasma for the treatment of severe covid-19-a propensity score-matched control analysis AU - Pappa, V. AU - Bouchla, A. AU - Terpos, E. AU - Thomopoulos, T.P. AU - Rosati, M. AU - Stellas, D. AU - Antoniadou, A. AU - Mentis, A. AU - Papageorgiou, S.G. AU - Politou, M. AU - Kotanidou, A. AU - Kalomenidis, I. AU - Poulakou, G. AU - Jahaj, E. AU - Korompoki, E. AU - Grigoropoulou, S. AU - Hu, X. AU - Bear, J. AU - Karaliota, S. AU - Burns, R. AU - Pagoni, M. AU - Trontzas, I. AU - Grouzi, E. AU - Labropoulou, S. AU - Stamoulis, K. AU - Bamias, A. AU - Tsiodras, S. AU - Felber, B.K. AU - Pavlakis, G.N. AU - Dimopoulos, M.-A. JO - Microorganisms PY - 2021 VL - 9 TODO - 4 SP - null PB - MDPI AG SN - null TODO - 10.3390/microorganisms9040806 TODO - null TODO - COVID-19 is a global pandemic associated with increased morbidity and mortality. Convalescent plasma (CP) infusion is a strategy of potential therapeutic benefit. We conducted a multicenter phase II study to evaluate the efficacy and safety of CP in patients with COVID-19, grade 4 or higher. To evaluate the efficacy of CP, a matched propensity score analysis was used comparing the intervention (n = 59) to a control group (n = 59). Sixty patients received CP within a median time of 7 days from symptom onset. During a median follow-up of 28.5 days, 56/60 patients fully recovered and 1 patient remained in the ICU. The death rate in the CP group was 3.4% vs. 13.6% in the control group. By multivariate analysis, CP recipients demonstrated a significantly reduced risk of death [HR: 0.04 (95% CI: 0.004–0.36), p: 0.005], significantly better overall survival by Kaplan–Meir analysis (p < 0.001), and increased probability of extubation [OR: 30.3 (95% CI: 2.64–348.9), p: 0.006]. Higher levels of antibodies in the CP were independently associated with significantly reduced risk of death. CP infusion was safe with only one grade 3 adverse event (AE), which easily resolved. CP used early may be a safe and effective treatment for patients with severe COVID-19 (trial number NCT04408209). © 2021 by the au-thors. Licensee MDPI, Basel, Switzerland. ER -