In summary, COVID-19 patients vs. controls showed higher median levels of GDF-15 (pg/ml) (p < 0.0001), PIVKA-II (ng/ml) (p < 0.0001) and sdLDL (nmol/ml) (p = 0.0002), whereas no difference was observed in suPAR (ng/ml) median levels (p = 0.153) (Table 2). This evidence concerns the gene GDF15 and COVID-19.