LRP6 and COVID-19: We evaluated the expression levels of genes involved in cholesterol metabolism (PPARG, LDLR, LRP6, CD36, STAB1, ANXA2) in PBMCs of patients with various outcomes of COVID-19 (convalescence / death) infected by the Delta variant as variant associated with pronounce decrease of LDL level in non-survivors over time, as well as in controls (S6 Table).