Beside 46,XY DSD patients with low concentrations of AMH and detectable Müllerian structures [14, 34] and patients with normal AMH levels without a uterus or fallopian tubes [15, 35], there are also some cases reported with low levels of AMH at birth but without apparent Müllerian structures [15, 36, 37]. This evidence concerns the gene AMH and disorder of sexual differentiation.