Interestingly, the kinase inhibitor baricitinib, which is used to treat rheumatoid arthritis (RA) [58] and inhibits the Janus kinase/signal transducers and activators of transcription (JAK/STAT), additionally blocks NAK and AAK1 kinases [59] and exhibited anti-viral activity in COVID-19 patients [60]. Here, AAK1 is linked to rheumatoid arthritis.