Evaluating Convalescent Plasma to Decrease Coronavirus Associated Complications. A Phase I Study Comparing the Efficacy and Safety of High-titer Anti-Sars-CoV-2 Plasma vs Best Supportive Care in Hospitalized Patients With Interstitial Pneumonia Due to COVID-19

Baylor Research Institute, NCT04333251, NCT04333251, Dec 2022
Estimated 115 patient convalescent plasma late treatment RCT with results not reported over 3 years after estimated 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.
Baylor Research Institute et al., 31 Dec 2022, Randomized Controlled Trial, placebo-controlled, USA, trial NCT04333251 (history).
Late treatment
is less effective