Multivariate analysis adjusted for variables with a p-value < 0.1 in the unadjusted analysis (MELD score and ICU admission before OLT) showed that the use of IgM preparation reduced (OR 0.348, CI 0.132–0.919; p = 0.033) independently of the occurrence of infections in the first 30 days after transplantation (Table 3). This evidence concerns the gene CD40LG and infection.