(A-D) Grip power (A), body weight (B), rotarod performance (C) (Two-way ANOVA with Tukey's test) and survival rate (D) (Kaplan-Meier analysis and log-rank test) of AR-97Q mice treated with or without RG108 (DMSO, n =20; 0.5 mg/dL, n = 20; 2.0 mg/dL, n = 20). All parameters were significantly improved in AR-97Q mice treated with 2.0 mg/dL RG108 compared with those treated with DMSO: *P < 0.05 (grip); *P < 0.05 (body weight); *P < 0.05 (rotarod); and *P < 0.05 (survival). 