Predicting viral suppression, CD4 count and treatment outcomes [20, 30, 35, 41, 49, 51]; trivalent inactivated influenza vaccine immunogenicity in children living with HIV using in vitro gene expression testing [33]; identified visual field defects by CD4 levels; linking smoking‐related DNA changes to HIV outcomes [55]; predicting BSI among PLWH [52]; multitarget inhibitors for HIV/HCV coinfection [54]; and clinic attendance [22]. The gene discussed is CD4; the disease is coinfection.