Other testing, including HSV-2 IgG, human immunodeficiency virus (HIV)-1 and HIV-2 screening antibody, QuantiFERON Gold (Qiagen, Hilden, Germany), cytomegalovirus (CMV) IgG and IgM, and polymerase chain reaction (PCR) for toxoplasmosis, was negative. This evidence concerns the gene CD40LG and toxoplasmosis.