NANOS3 and Infertility: Interestingly, many of these genes are involved in the cell cycle, i.e., 10/26 (34%) NANOS1 and 15/52 (27%) NANOS3 infertility genes as well as 9/28 (32%) NANOS1 and 19/53 (36%) NANOS3 cancer-germ cell genes are cell cycle related (Figure S2).