IFNG and cytomegalovirus infection: We also studied the influence of the IFNG +874 A/T polymorphism on the development of CMV infection in the subgroups stratified by thymoglobulin therapy, and we found no association in any of the tested groups: in the overall cohort, in the thymoglobulin induction therapy, in the thymoglobulin anti-rejection therapy, and also in the no thymoglobulin therapy group (Supplementary Table 2).