In addition, endometrial cancer mouse models with conditional inactivation of phosphatase and tensin homolog (Pten) and the AT-rich interaction domain 1 A (Arid1a) genes, demonstrate aberrant TGFβ signaling, further supporting that inactivation of the TGFβ pathway contributes to the metastatic potential of endometrial tumors. Here, TGFB1 is linked to endometrial cancer.