STAT3 and cancer: Characteristically, it has been shown that let-7 can prevent the proliferation of cancer cells by targeting oncogenes like rat sarcoma (RAS), high‐mobility group AT‐look 2 (HMGA2), c‐Myc, Janus protein tyrosine kinase (JAK), signal transducer and activator of transcription 3 (STAT3)36.