Hypochondrogenesis, also known as achondrogenesis type ii/hypochondrogenesis, is related to spondyloepiphyseal dysplasia with congenital joint dislocations and achondrogenesis, type ii, and has symptoms including enlarged abdomen An important gene associated with Hypochondrogenesis is COL2A1 (Collagen Type II Alpha 1 Chain), and among its related pathways/superpathways are ERK Signaling and Integrin Pathway. Affiliated tissues include bone and vertebral column, and related phenotypes are Increased gamma-H2AX phosphorylation and homeostasis/metabolism