SAP130 and Infertility: The expression of key circRNAs (hsa-SAP130_0002, hsa-TRPC1_0001, hsa-FBRS_0001, hsa-ACACA_0025, hsa-UTRN_0042, and hsa-ZNF532_0023) was then validated by qPCR, and their diagnostic accuracy for infertility was confirmed through receiver operating characteristic curve analysis.