YAP1 and gastric cancer: Specifically, Ajani et al. evidenced that YAP1 inhibition attenuated GC peritoneal metastasis [40], Wang et al, reported that YAP1 promoted malignancy and immunosuppression [41], and An et al. found that inactivation of YAP1 by MST4 kinase suppressed GC tumorigenesis [42].