In the present study, we detected attenuated expression of CITED2 and the transcription factor Forkhead Box J3 (FOXJ3) in both hypoxia and SU5416/hypoxia (Su/Hx)‐induced PH models, as well as PASMCs from idiopathic PAH (iPAH) patients [19]. The gene discussed is FOXJ3; the disease is idiopathic pulmonary arterial hypertension.