In this sense, statistically significant differences were found in the following demographic and clinical features: age, sex, arterial hypertension, diabetes mellitus type 2, previous lung disease, vaccination, D-dimer on admission, peak ferritin on admission, peak lactate dehydrogenase on admission, peak C-reactive protein on admission, corticosteroids, tocilizumab, high-flow nasal therapy, orotracheal intubation, and days of hospital admission (Table 6). This evidence concerns the gene CRP and type 2 diabetes mellitus.