LIN28A and cancer: LIN28A is a highly conserved RNA binding protein and has emerged as an oncogenic driver by blockading of let‐7 micro‐RNA biogenesis in many cancers33, 34, 35; however, in this study, we identified that LIN28A was associated with a better prognosis of TGCT, which is different from the other cancers types.36, 37, 38 Nevertheless, there also exists some limitations in this study.