The in-depth analysis of the innate immune cell compartments revealed that COVID-19 patients showed a marked increased tendency in the median percentage of NK cells (evaluated as CD3-CD56+ cells) compared to healthy controls: 14.3% (8.5–19.6) vs. 9.2% (7.2–14.9), p = 0.051 (Table 1). The gene discussed is NCAM1; the disease is COVID-19.