circ_0001546 sponges miR-421 to upregulate the expression level of ATM and inhibit the proliferation and chemoresistance through the activation of the ATM/Chk2/p53-dependent pathway.
Hsa_circ_0001546 acts as a miRNA-421 sponge to inhibit the chemoresistance of gastric cancer cells via ATM/Chk2/p53-dependent pathway.