In the group of children with hepatitis, there was a positive correlation between GGTP activity and children’s age (ρ = 0.242, p = 0.047), lymphocyte count (ρ = 0.418, p = 0.002), and TNF-α concentration (ρ = 0.324, p = 0.017). The gene discussed is TNF; the disease is Hepatitis.