FASLG and COVID-19: However, in the multiple logistic regression analysis, in which the polymorphism was evaluated together with other investigated factors, the frequency of the FASL rs763110 (C/T) polymorphism was no longer significant for the severity of COVID-19, indicating that other factors are more important in the progression of SARS-CoV-2 infection, and in this context, the polymorphism is no longer relevant.