PKP2 and arrhythmogenic right ventricular cardiomyopathy: It is noteworthy that the expression of αT-catenin and plakophilin-2 was significantly lower in the ARVC group compared to the control group (αT-catenin: 51.03 ± 9.79 vs. 71.63 ± 20.56, p < 0.001; plakophilin-2: 62.40 ± 12.91 vs. 71.00 ± 10.84, p = 0.034; Table 1).