Hypochondroplasia, also known as hch, is related to achondrogenesis, type ii and crouzon syndrome with acanthosis nigricans. An important gene associated with Hypochondroplasia is FGFR3 (Fibroblast Growth Factor Receptor 3), and among its related pathways/superpathways are Signal Transduction and RAF/MAP kinase cascade. The drugs Hormone Antagonists and Hormones have been mentioned in the context of this disorder. Affiliated tissues include bone and temporal lobe, and related phenotypes are skeletal dysplasia and abnormal form of the vertebral bodies