P-REX1 creates a positive feedback loop to activate growth factor receptor, PI3K/AKT and MEK/ERK signaling in breast cancer. - Dillon LM; Bean JR; Yang W; Shee K; Symonds LK; Balko JM; McDonald WH; Liu S; Gonzalez-Angulo AM; Mills GB; Arteaga CL; Miller TW (Oncogene, 2015)