CDY1 and Infertility: The remaining 12 out of 50 infertile men (1.2%) and 3 out of 9 controls (0.5%) (Table 1) identified as gr/gr with the removal of sY1291, DAZ cluster II (DAZ3 + 4) and a copy of CDY1a show the r2/r4 NAHR pattern (Fig. 1FIII).