circDHX33 promoted the proliferation and invasion in ccRCC cells. (A) The expression of circDHX33 in RCC cell lines. (B) The efficiency of circDHX33 knockdown in 786O and A498 cells. (C–F) Cell viabilities were assessed by CCK-8 and colony formation and tests. (G, H) Cell invasion was assess using Transwell assay. *p<0.05, **p<0.01.