IL6 and hematologic disorder: In our two patients, the choice to start Tocilizumab was made not only for COVID-19 pneumonia but also, and most importantly, because of the symptoms of the haematological disease and high levels of IL-6 in the serum (135.0 pg/mL for patient A and 187.0 pg/mL for patient B; normal values < 1.8 pg/mL).