Adult Central Nervous System Embryonal Tumor, also known as adult central nervous system primitive neuroectodermal neoplasm, is related to supratentorial primitive neuroectodermal tumor and rela fusion-positive ependymoma. An important gene associated with Adult Central Nervous System Embryonal Tumor is CDKN2D (Cyclin Dependent Kinase Inhibitor 2D). Related phenotypes are hearing/vestibular/ear and respiratory system