In the absence of specific treatment for this condition, we resorted to the treatment of heart failure with reduced LVEF, including diuretics in case of congestive signs, a beta-blocker (Bisoprolol) for his arrhythmia and for the heart failure, an anti-mineralocorticoid (Spironolactone) and an SGLT2 inhibitor, based on the recommendations of the European Society of Cardiology for the management of heart failure [16]. Here, SLC5A2 is linked to cardiac arrhythmia.