PDGFRA and Ewing sarcoma: Moreover, EPHA2 and VEGFC ranked high in Ewing’s sarcoma, PDGFRA in embryonal rhabdomyosarcoma, and ERBB3 in alveolar and unclassified rhabdomyosarcoma, when an outlier expression analysis of the 24 selected cancer drug targets in pediatric sarcomas across the Genesapiens database was carried out using a non-parametric algorithm GTI, a method designed to detect outlier overexpression levels in subsets of samples [17] (File S1).