Bachmaier et al. (2009) notes that the alteration of glycosylation of EWS-FLI1 allows to modify his tumor action and, therefore, is a useful aspect for the pharmacological treatment; the author notes that the glycosylation and phosphorylation of EWS-FLI1 modify the molecular weight and then the functionality of the transcription factor. This evidence concerns the gene EWSR1 and neoplasm.