To rule out toxoplasmosis, which could also develop into lymphadenopathy, meningitis, and uveitis, Toxoplasma-specific IgG and IgM titers were evaluated on day 37 of illness, and revealed to be both positive 219 IU/mL (reference value < 6 U/mL) and 4.2 IE/mL (reference value < 0.8 U/mL) respectively. The gene discussed is CD40LG; the disease is Lymphadenopathy.