PRDM1 and Azoospermia: Examples are over-expression of deleted in azoospermia (DAZ) [36,49], DAZL [36,37,49,63,65], BOULE [36,49], DDX4 [37], PR/SET domain 1 (PRDM1) [63], DPPA3 [67], and nanos C2HC-type zinc finger 3 (NANOS3) [65].