CSTA and Infertility: Their results demonstrated 10 over-expressed proteins in the infertile group, including: Ubiquitin-conjugating enzyme E2C binding protein (UBE2C), Cystatin-A (CSTA), Dermcidin (DCD), Ceruloplasmin (CP), Ras GTPase-activating-like protein IQGAP1 (IQGAP1).