HOXA11 and gastric cancer: Our data shown that knockdown of CD44s block the ability of tumorsphere formation and adhesion in gastric cancer cells which was enhanced by HOXA11 rather than the migration and invasion regulated by HOXA11, and BBI608 blocked the phosphorylation (Tyr705) of Stat3 which were activated by HOXA11 and followed by reduced CD44 expression level.