We further calculated absolute IFN-γ expressing cells in samples but found that there was no difference between SLE patients and healthy controls ((0.90 ± 1.27) × 107/L (n = 20) versus (0.58 ± 0.53) × 107/L (n = 10), P > 0.05). The gene discussed is IFNG; the disease is systemic lupus erythematosus.