There are seven candidate lncRNAs (HOXA-AS2, JPX, LMNTD2-AS1, MALAT1, MIR99AHG, SND1-IT1 and ZNF22-AS1) for the 203 lncRNA-mRNA pairs in the ceRNA network that were found to be associated with PAH for the first time. The gene discussed is PTGDR; the disease is pulmonary arterial hypertension.