17-Beta Hydroxysteroid Dehydrogenase Iii Deficiency, also known as neutral 17-beta-hydroxysteroid oxidoreductase deficiency, is related to hypospadias and gynecomastia. An important gene associated with 17-Beta Hydroxysteroid Dehydrogenase Iii Deficiency is HSD17B3 (Hydroxysteroid 17-Beta Dehydrogenase 3), and among its related pathways/superpathways are Metabolism of steroids and Metabolism of steroid hormones. Affiliated tissues include prostate and testis, and related phenotypes are cryptorchidism and hypogonadotropic hypogonadism