TRDN and catecholaminergic polymorphic ventricular tachycardia: Other genes associated with the CPVT phenotype areCALM 1-3  [110], CASQ2, TRDN and TECRL  [111, 112, 113, 114, 115] (Table 6).Similar to the LQTs’ “Schwartz score”, Giudicessi et al. [116]developed a clinical scoring system (without a genetic test result) for patientswith a CPVT phenotype; for details see Table 7 (Ref.