Extended Data Fig. 1: Telemetry electrocardiogram (ECG) and cardiac magnetic resonance image (MRI) analysis in PKP2 Het mice.

(a) Representative telemetry ECG tracings and premature ventricular contraction (PVC) counts from Ctrl and PKP2 heterozygous (Het) mice at 3 months of age. Red arrows indicate premature ventricular contractions. Scale bar = 0.1 s. Data are presented as mean ± S.E.M. n = 3 biologically independent animals examined per group, two-tailed unpaired t test, * p < 0.05 (p = 0.0135). (b) Quantification of end-diastolic volumes (EDV), end-systolic volumes (ESV) and percentage of ejection fraction (EF %) in WT and PKP2 Het mice at 10 months old of age using cardiac MRI. n = 4 biologically independent animals examined per group. Data are presented as mean ± S.E.M. Two-way ANOVA with Tukey’s multiple comparison test.