Measurement of anti–SARS-CoV-2 Igs (IgG-S, IgA-S, IgG-N, and NAbs)
Serum samples were collected prior to treatment for the determination of composite anti–SARS-CoV-2 serostatus, as well as the presence of Ig/antigen-specific anti–SARS-CoV-2 antibody responses and NAbs, as previously described