KRT18 and infection: Oladunni et al. [52] confirmed the mortality of K18-hACE2 transgenic mice after intranasal inoculation of SARS-CoV-2; in fact, all the animals used in their study died by 6 DPI (days post infection), and at this same time point the presence of a systemic and local chemokine storm was detected, especially in the lungs and brain, where they also detected the presence of the SARS-CoV-2 N protein and hACE2 expression.