A serological hepatitis B marker test showed positive HBsAg, negative hepatitis B e-antigen (HBeAg), positive HBe-antibody (HBeAb), positive hepatitis B core antibody (HBcAb), 1:502 IgM anti-HBc antibody quantification, 1.1 × 105 IU/mL HBV-DNA blood viral load, and negative for all other serological markers of hepatitis (including hepatitis A, C, D and E). This evidence concerns the gene CD40LG and hepatitis A virus infection.