IFNG and cytomegalovirus infection: Our study is the first attempt to confirm, in a large number of patients (600 consecutive kidney transplanted recipients, 205 patients with CMV infection), the previously reported association of IFNG +874 A/T polymorphism with CMV infection in kidney transplant (33) (247 patients, 52 with CMV infection) and in lung transplant (34) (170 recipients, 40 with CMV infection).