ARID1A and ovarian clear cell cancer: To confirm that the interference of CCNE1 showed selective effects on the ARID1A deficient status, we interfered ES2 and RMG-I (ARID1A wild type ovarian clear cell carcinoma lines) using si-ARID1A (5 nM or 10 nM) and si-control, then 48h after the first knockdown, these cells were transfected by 5 nM or 10 nM of si-CCNE1.