We found that the ECAR and %PER from glycolysis were decreased with circCDKN2B-AS1 knockdown in SiHa and CaSki cells (Fig. 3e-f, Additional file 7: Fig. S4D), suggesting that circCDKN2B-AS1 knockdown weakens glycolysis in cervical cancer cells. This evidence concerns the gene PTGDR and cervical cancer.