SRY‐related HMG‐box 4 (SOX4) is a potent tumour suppressor gene, and its expression is induced in many types of cancer.6 Castro‐Oropeza et al demonstrated that LncRNA DANCR competed with Sox4 mRNA to bind with miR‐138, thereby affecting the expression of Sox4.7 Sun et al8 found that miR‐339‐5p directly targeted SOX4 and exerted anti‐proliferative effects in acute myeloid leukaemia (AML). This evidence concerns the gene SOX4 and cancer.