His laboratory work-up revealed positive serology for HIV-I, PJP, and cryptococcal antigen and negative serology for herpes simplex virus (HSV) I/II, CMV, RPR, hepatitis A/B/C, cocci IgG/IgM, AFB, Chlamydia and gonococcus, and Toxoplasma IgG. This evidence concerns the gene CD40LG and pneumocystosis.