CD40LG and systemic lupus erythematosus: When comparing absolute numbers of SLE patients and healthy controls seropositive for the various EBV antibodies results showed statistically significant differences between SLE patients and healthy controls regarding EBV-VCA IgA (p = 0.003), EBV-VCA IgM (p = 0.0007), EBV-EA/D IgG (p = 0.0001), EBV-EA/D IgA (p = ~0) and EBV-EA/D IgM (p = 0.0001) (Table 2).