CDH1 and gastric cancer: Figure 5a shows full 10-point dose response curves of PI-103, etoposide, and mitoxantrone confirming select sensitivity of hereditary c.1380delA CDH1 mutant SB.mhdgc-1 gastric cancer cells compared to most sporadic gastric cancer cells (up to 100- to 1000-fold lower GI50 measurements compared to SNU-16 or SB.msgc-1 cells).