PIWIL2 and complete androgen insensitivity syndrome: Genes involved in spermatogenesis, such as PIWIL2, CAPN11, UBQLN3, GGN, SPATA3, SPACA4, SPATS1, and protamines PRM1 and PRM2 were significantly downregulated in patients with CAIS compared to men with normal spermatogenesis (Figure 6).