SSH20 treatment significantly reduced tumor growth rate in shCtrl (Cav-1 proficient) groups (Figures 5B and 5D, left panels)…results suggest that SSH20 likely has improved efficacy in high Cav-1-expressing tumors....Our results confirm that (1) SSH20 is effective in lung and pancreatic cancer in vitro and in vivo with high Cav-1 expression, and (2) SSH20 is more potent than irinotecan with no apparent difference in overall toxicity in mouse models.