Leydig Cell Hypoplasia, also known as 46,xy disorder of sex development due to luteinizing hormone resistance or luteinizing hormone beta subunit deficiency, is related to pseudovaginal perineoscrotal hypospadias and 46,xy disorder of sex development. An important gene associated with Leydig Cell Hypoplasia is LHCGR (Luteinizing Hormone/Choriogonadotropin Receptor), and among its related pathways/superpathways are Signal Transduction and Class A/1 (Rhodopsin-like receptors). Affiliated tissues include testes and breast, and related phenotypes are delayed skeletal maturation and cryptorchidism