In hypertrophic cardiomyopathy (HCM), Guo et al. (95) identified hsa_circ_0043762, hsa_circ_0036248, and hsa_circ_0071269 as potential key regulators, and Liu T et al. (96) implicated hsa-circRNA-100053-hsa-miR-455-5p-TRPV1 and hsa-circRNA-005843-hsa-miR-188-5p-SPON1 interaction pairs in atrial fibrillation (AF) pathophysiology. Here, SPON1 is linked to atrial fibrillation.