Mannan-binding lectin-2 (MBL2) gene polymorphisms in prenatal and perinatal cytomegalovirus infections.

Cytomegalovirus (CMV) is the leading cause of congenital infections among neonates. About 10% of newborns with such an infection have clinical symptoms at birth and about 1% of infected fetuses die due to developmental malformations. Mannan-binding lectin (MBL) is considered to be an important factor in innate immunity. Its deficiency is believed to predispose to various (including viral) infections. The aim of this study was to investigate the possible role of MBL2 gene polymorphisms in prenatal and perinatal CMV infections. The frequencies of MBL2 gene exon 1 mutations as well as MBL deficiency-associated variants (LXPA/O+O/O) among newborns with confirmed cytomegalovirus infection were not significantly lower than among non-infected individuals. The distribution of MBL2 haplotypes was similar between the groups studied. These data suggest MBL does not have a major influence on susceptibility to prenatal or perinatal CMV infections.