CNBP and gastric cancer: In a cohort of 81 gastric cancer cases, lower circ-HuR expression (P = 3.0 × 10− 3) and higher expression of CNBP (P = 7.0 × 10− 4) or HuR (P = 3.5 × 10− 2) was associated with lower survival probability of patients (Additional file 1: Figure S4 g).