Regulatory effects of lncRNA in PAH range from enhanced proliferation of PASMCs (H19 [325], PAXIP-AS1 [326], MALAT1 [327], Inc-Ang362 [328], Tug1 [329], HOXA-AS3 [330], MEG3 [331], TCONS_00034812 [148], and UCA1 [332]), over suppressed proliferation and/or migration of PASMCs (MEG3 [333,334], CASC2 [335], and LnPRT [336]) to induction of EndoMT in PAECs (MALT1 [337] and GATA6-AS [338]). This evidence concerns the gene MEG3 and pulmonary arterial hypertension.