MASP2 and severe acute respiratory syndrome: However, we only observed the SNP rs2273346 (p.V377A) among those mentioned in the study of Thiel et al. We analyzed four tagSNPs in the MASP2 gene in two different SARS patients and controls, searching for a possible genotype-phenotype correction, but no statistically significant difference was found for any polymorphisms between the different groups genotyped, while the possible role of the rare variants is to be determined.