Since MYCN amplification is characteristic for aggressive neuroblastomas which are often located close to the spine as well as for a distinct subset of pediatric glioblastomas [13, 21], we repeated DNA methylation-based clustering for the distinct spinal ependymoma cohort with two reference sets of 105 neuroblastomas and 11 MYCN-amplified pediatric glioblastomas, confirming the distinct methylation class of these cases (Suppl. The gene discussed is MYCN; the disease is glioblastoma.