Liu L, Qin Z, Liu Q, Wen L, Liu K, Guo Y, Zhou Y, Wang B, Chen D, Wang T. Norrin maintains malignancy of gastric cancer cells in part through activating AKT signaling. Biochemical and Biophysical Research Communications. 2019 Apr;512(2):405–11. doi: 10.1016/j.bbrc.2019.03.044.