WNT5A and non-small cell lung carcinoma: MiR‐21 promotes NSCLC cell proliferation and invasion through inhibiting the expression of PTEN, a well‐known tumour suppressor.16 In contrast, miR‐1253 suppresses NSCLC progression via blocking WNT5A expression.17 Therefore, miRNAs likely play dual roles in NSCLC tumourigenesis through silencing distinct targets.