TNPO2 and gastric cancer: The results showed that the cell cycle was arrested in G1 phase at 48 hours after knockdown of TNPO2 in gastric cancer cell line HGC‐27 [the frequency of G1 phase in the NC interference group was approximately 32%, and the frequency of G1 in TNPO2 siRNA interference group was approximately 56% (P < 0.01)].