IFNG and amyotrophic lateral sclerosis: The levels IFN-γ in CSF (348.83±15.32 pg/ml and 172.22±17.58 pg/ml, respectively) and serum (280.66±15.44 pg/ml and 136.42±14.79 pg/ml, respectively) were significantly different between the ALS patients and the non-ALS patients (P<0.01), and a difference was detected between the CSF (348.83±15.32 pg/ml) and serum (280.66±15.44 pg/ml) IFN-γ levels in the ALS group (P<0.01, Table 1).