The PI3K inhibitors BKM120 (Yang et al., 2018a), PX-886 (Yang et al., 2018b), XL147 (Gravina et al., 2016), WX-037 (Haagensen et al., 2016), BYL719 (Juric et al., 2018), and GDC0032 (Juric et al., 2018) were designed treat gastric cancer. Here, PIK3CA is linked to gastric cancer.