The relative reactivity of AGP glycans with LTA was 0.135 ± 0.076 AU (median: 0.116 AU) in the group of patients with severe COVID-19, 0.191 ± 0.078 AU (median: 0.173 AU) in the group of convalescents, and 0.255 ± 0.116 AU (median: 0.245 AU) in the control group of healthy subjects. This evidence concerns the gene ATP5MK and COVID-19.