Enchondromatosis, Multiple, Ollier Type, also known as ollier disease, is related to exostoses, multiple, type i and hereditary multiple osteochondromas, and has symptoms including pain An important gene associated with Enchondromatosis, Multiple, Ollier Type is IDH1 (Isocitrate Dehydrogenase (NADP(+)) 1), and among its related pathways/superpathways are Signal Transduction and Presynaptic function of Kainate receptors. The drug Isotretinoin has been mentioned in the context of this disorder. Affiliated tissues include bone and liver, and related phenotypes are hemangioma and micromelia