[Current therapies in Ewing sarcoma: What's new?].

Ewing sarcoma (ES) is an aggressive sarcoma with a peak incidence in adolescents and young adults. Current therapy involves multiagent chemotherapy and local therapy but despite intensification of treatment patients with metastases at diagnosis and recurrent disease have poor prognosis. Improved understanding of ES biology has identified novel targets with promising activity in ES patients. Tyrosine kinase inhibitors are currently being evaluated as combination and maintenance therapy. Other emerging therapies include those that target the EWSR1:FLI1 fusion oncoprotein, cell cycle, apoptotic and DNA-repair pathways. Immunotherapeutic approaches are also being investigated, particularly CAR-T and CAR-NK cell therapy. Close collaboration between clinicians and biologists has also highlighted the importance of biomarkers that are still being validated prospectively and might be incorporated into standard of care in the future.