Kinetics of the cytokines in our patient was consistent with a previous study which analyzed 24 children with HLH, which demonstrated the significant increase of IFN-γ (median level; 901.7 pg/mL), IL-6 (median level; 63.8 pg/mL) and IL-10 (median level; 879.0 pg/mL) in the acute phase [11]. The gene discussed is IFNG; the disease is hemophagocytic syndrome.