The oncogenesis of GC is a complex pathophysiological process involved in multifarious pathophysiological process, including proliferation, invasion, metastasis and cycle progression.22, 23 In subsequent functional experiments in vitro, results revealed that NNT‐AS1 knockdown suppressed the proliferation and invasion ability in vitro, induced the GC cell cycle progression arrest at G0/G1 phase and inhibited the GC tumour growth in vivo. Here, NNT is linked to neoplasm.