Knockout of TRPC1 improves motor performance of YAC128 mice in the beam walk assay. (A) Average body weight of WT, YAC128+/−, TRPC1−/− and YAC128+/−TRPC1−/− mice at different ages. (B) Beam crossing latencies and (C) number of foot slips for WT, YAC128+/−, TRPC1−/− and YAC128+/−TRPC1−/− mice at ages 1.5–12 months for the 17 mm beam are shown as mean ± SE (WT, n=14 female mice; YAC128, n=14 female mice; TRPC1−/−, n=11 female mice; and YAC128+/−TRPC1−/−, n=11 female mice). *p<0.05, **p<0.01, ***p<0.001, ****p<0.0001 when the YAC128 group is compared to the WT group. #p<0.05, ##p<0.01, ###p<0.001, ####p<0.0001 when the YAC128 group is compared to YAC128+/−TRPC1−/− group.