Furthermore, the majority of the identified proteins are in fact involved in contractile function (MYL4, MYL7, TNNC1 and TCAP) or metabolism (PPIF, CKM, AK1, PGAM2, CYC1, ETFB and ALDOA), two mechanisms linked to processes involved in the pathophysiology of AF. Here, MYL7 is linked to atrial fibrillation.