MST1 and extranodal nasal NK/T cell lymphoma: Consistently, cell cycle analysis showed that the ratio of NKTCL cells at G1 was significantly increased when the MST1 was overexpressed (P < 0.05, vs the vector group) or YAP was knocked down (P < 0.01, vs the vector group), while YAP overexpression and MST1 knockdown exhibit no significant effects on the cell cycle progression of NKTCL cells compared with the vector group (Figure 3A,B).