MBL2 and COVID-19: In their study, genetic MBL2 variants were not associated with the need for hospitalization or ICU admission during SARS-CoV-2 infection, but haplotype combinations with intermediate MBL expression (LXA/LXA, HYA/0, LYA/0) were found to be protective when it comes to thromboembolic complications in critically ill COVID-19 patients (39).