Among the most downregulated miRs post‐PH, we found 4 miRs (miR‐106a‐5p, miR 340‐5p, miR‐19b‐3p and miRNA‐455‐5p), targeting Socs3, a known tumour suppressor and an inhibitor of cell cycle. Here, SOCS3 is linked to neoplasm.