miR-138-5p is upregulated in PASMCs from PAH patients as well from rats subjected to MCT-induced PAH and its inhibition restores KCNK3 and Solute carrier family 45-member 3 (SLC45A3) expression and ameliorates PAH and RV function [182]. Here, SLC45A3 is linked to pulmonary arterial hypertension.