Summary of recommendations...Ewing Sarcoma...ChT regimens in relapse situations are not standardised and include alkylating agents (cyclophosphamide and high-dose ifosfamide) in combination with topoisomerase inhibitors (etoposide and topotecan), irinotecan with temozolomide [III, B] or gemcitabine and docetaxel, or high-dose ifosfamide or carboplatin with etoposide.