SORT1 and gastric cancer: To investigate whether hsa_circ_0110389 promotes GC progression through SORT1, HGC-27 and KATO III cells were co-transfected with hsa_circ_0110389 shRNA and SORT1 overexpression vector, and AGS and NCI-N87 cells were co-transfected with hsa_circ_0110389 overexpression vector and SORT1 shRNA.