KLF4 and breast angiosarcoma: Moreover, we previously successfully constructed a cell model of BA-induced gastric IM and found that miR-92a promotes the expression of the IM markers Caudal-related homeobox2 (CDX2), Krüppel-like factor 4 (KLF4) and VILLIN 1 (VIL1) by targeting FOXD1 [18].