Eiken Syndrome, also known as eiken skeletal dysplasia, is related to osteochondrodysplasia and malignant ovarian brenner tumor. An important gene associated with Eiken Syndrome is PTH1R (Parathyroid Hormone 1 Receptor), and among its related pathways/superpathways are Wnt / Hedgehog / Notch and Tyrosine Kinases / Adaptors. Affiliated tissues include bone and cortex, and related phenotypes are epiphyseal dysplasia and arthralgia