MAOB and delirium: Furthermore, Cuperlovic-Culf et al. [111] hypothesized a relationship between delirium and SARS-CoV-2 infection via a possible binding of SARS-CoV-2 spike protein to monoamine oxidase B (MAO-B) enzymes, which influences the enzyme activity and possibly leads to many of the observed neurological and platelet-based complications of SARS-CoV-2 infection.