CALM1, CALM2, and CALM3 expression and translation efficiency provide insight into the severity of calmodulinopathy. - Christiansen SNN; Jacobsen SB; Andersen JD; Cui Y; Li W; Staehr C; Andersen MM; Crotti L; Spazzolini C; Schwartz PJ; Nyegaard M; Overgaard MT (Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology, 2026)