This paper aimed to unveil the diagnostic values of serum brain natriuretic peptide (BNP), pentraxin 3 (PTX3), and vascular endothelial growth factor (VEGF) in acute pulmonary embolism complicated by pulmonary artery hypertension (APE‐PAH) and their correlations with severity of PAH. This evidence concerns the gene PTX3 and pulmonary arterial hypertension.