ELAVL1 and gastric cancer: To investigate whether circTHBS1 exerts its bio-function in GC cells through simultaneous regulation of HuR and miR-204-5p, circTHBS1 plasmids with mutant miR-204-5p binding site (circ-mut-miR), truncated HuR binding region (circ-mut-Δ690-760), and both mutations (circ-mut-miR + Δ690-760) were transfected into AGS and HGC-27 cells respectively.