Phase I / II Multicentre, Randomized and Controlled Clinical Trial to Evaluate the Efficacy of Treatment With Hyperimmune Plasma Obtained From Convalescent Antibodies of COVID-19 Infection

Cardesa Gil et al., NCT04366245, NCT04366245, Dec 2020
72 patient convalescent plasma late treatment RCT with results not reported over 5 years after completion.
29 convalescent plasma RCTs have results missing long after expected1-29
The trials report a total of 3,534 patients, with 15 trials having actual enrollment of 1,143, and the remainder estimated.
Cardesa Gil et al., 30 Dec 2020, Randomized Controlled Trial, Spain, trial NCT04366245 (history). Contact: ana.cardesa@juntadeandalucia.es.
Late treatment
is less effective