A reduction in Kv channels, in particular Kv1.2, Kv1.5, and Kv2.1, have been proven in the pathogenesis of hypoxia-induced pulmonary hypertension, leading to pulmonary vasoconstriction and vascular remodeling, while the upregulation of Kv channels is of therapeutic significance for pulmonary hypertension (Jackson et al., 2018). Here, KCNA2 is linked to pulmonary arterial hypertension.