Intracranial Primitive Neuroectodermal Tumor, also known as intracranial primitive neuroectodermal neoplasm, is related to differentiating neuroblastoma and supratentorial primitive neuroectodermal tumor. An important gene associated with Intracranial Primitive Neuroectodermal Tumor is CD99 (CD99 Molecule (Xg Blood Group)). Affiliated tissues include pineal and brain.