A previous study published by Parrish and colleagues uncovered that KDM3A is a miRNA‐22‐3p‐regulated tumour promoter in Ewing sarcoma.42 Here, our data not only demonstrated a negative correlation between miRNA‐22‐3p and KDM3A in MI, but the subsequent luciferase reporter assay also confirmed that miRNA‐22‐3p could directly combine with KDM3A mRNA. Here, KDM3A is linked to Ewing sarcoma.