CKB and Infertility: Of interest, some candidates related to sperm and infertility were identified, containing MORC1 [46], TDRD9 [47], ZFYVE21 [48], ADGRB3 [49], SPAG17 [50,51], CKB [52], and WDR3 [53], which may have effects on sperm motility and fertilization.