CD40LG and Epstein-Barr virus infection: Concomitantly, high concentrations of anti-Epstein-Barr virus capsid antigen Immunoglobulin M (EBV-VCA-IgM) and a slight increase of anti-Epstein-Barr virus capsid antigen Immunoglobulin G (EBV-VCA-IgG) along with a negative anti-Epstein-Barr Nuclear Antigen Immunoglobulin G (EBNA-IgG) were detected, helping establish a diagnosis of ongoing EBV infection (Table 1).