In addition, recent findings suggest that INPP4B facilitates PI3KCA crosstalk with Wnt signaling in ER+ breast cancer via PI(3,4)P2-to-PI(3)P conversion on late endosomes, suggesting that these tumors may be targeted with combined PI3K and Wnt/β-catenin therapies [43]. Here, PIK3CA is linked to breast carcinoma.