AIM OF THE STUDY: To determine whether a risk factor adapted chemotherapy would improve the outcome of non-metastatic bone Ewing's sarcoma. METHODS: Standard risk tumours (SR, good histological response to chemotherapy or small unresected tumours) received the previous EW88 chemotherapy. Ifosfamide/etoposide (IE) were introduced after 3 courses of cyclophosphamide/doxorubicine when tumour regression was <50% or during consolidation therapy for the intermediate risk tumours (IR, intermediate histological response 5-30% residual cells or large unresected tumours >100ml). High risk tumours (HR, histological poor response >30% residual cells or clinical poor response <50% for unresectable tumours), received IE prior high dose busulfan/melphalan with stem cell rescue. RESULTS: From 1993 to 1999, 214 patients were enrolled. 5 y-EFS and OS were 60% (95% confidence interval (CI), 53-66) and 69% (95% CI, 63-75), respectively. 116 (54%), 46 (21%), 48 (22%) patients were considered as SR, IR and HR of relapse, respectively. No advantage to IE was observed in the IR group. As compared to previous study, tumour with poor histological response to induction chemotherapy seemed to benefit from the consolidation strategy including busulfan/melphalan: EFS were 45% (95% CI, 30-60) and 20% (95% CI, 7-43) for EW93 and EW88, respectively. Despite a risk-adapted strategy, histological response to chemotherapy remains the main prognostic factor in resected tumours, while initial tumour volume is the main prognostic factor for unresected tumours. CONCLUSION: These results showing a potential benefit of a consolidation strategy including busulfan/melphalan as compared to conventional chemotherapy needed confirmation by a randomised trial and were one of the bases of the ongoing EuroEwing99.
AIM OF THE STUDY: To determine whether a risk factor adapted chemotherapy would improve the outcome of non-metastatic bone Ewing's sarcoma. METHODS: Standard risk tumours (SR, good histological response to chemotherapy or small unresected tumours) received the previous EW88 chemotherapy. Ifosfamide/etoposide (IE) were introduced after 3 courses of cyclophosphamide/doxorubicine when tumour regression was <50% or during consolidation therapy for the intermediate risk tumours (IR, intermediate histological response 5-30% residual cells or large unresected tumours >100ml). High risk tumours (HR, histological poor response >30% residual cells or clinical poor response <50% for unresectable tumours), received IE prior high dose busulfan/melphalan with stem cell rescue. RESULTS: From 1993 to 1999, 214 patients were enrolled. 5 y-EFS and OS were 60% (95% confidence interval (CI), 53-66) and 69% (95% CI, 63-75), respectively. 116 (54%), 46 (21%), 48 (22%) patients were considered as SR, IR and HR of relapse, respectively. No advantage to IE was observed in the IR group. As compared to previous study, tumour with poor histological response to induction chemotherapy seemed to benefit from the consolidation strategy including busulfan/melphalan: EFS were 45% (95% CI, 30-60) and 20% (95% CI, 7-43) for EW93 and EW88, respectively. Despite a risk-adapted strategy, histological response to chemotherapy remains the main prognostic factor in resected tumours, while initial tumour volume is the main prognostic factor for unresected tumours. CONCLUSION: These results showing a potential benefit of a consolidation strategy including busulfan/melphalan as compared to conventional chemotherapy needed confirmation by a randomised trial and were one of the bases of the ongoing EuroEwing99.
Authors: Jeremy Whelan; Marie-Cecile Le Deley; Uta Dirksen; Gwénaël Le Teuff; Bernadette Brennan; Nathalie Gaspar; Douglas S Hawkins; Susanne Amler; Sebastian Bauer; Stefan Bielack; Jean-Yves Blay; Stefan Burdach; Marie-Pierre Castex; Dagmar Dilloo; Angelika Eggert; Hans Gelderblom; Jean-Claude Gentet; Wolfgang Hartmann; Wolf-Achim Hassenpflug; Lars Hjorth; Marta Jimenez; Thomas Klingebiel; Udo Kontny; Jarmila Kruseova; Ruth Ladenstein; Valerie Laurence; Cyril Lervat; Perrine Marec-Berard; Sandrine Marreaud; Jean Michon; Bruce Morland; Michael Paulussen; Andreas Ranft; Peter Reichardt; Hendrik van den Berg; Keith Wheatley; Ian Judson; Ian Lewis; Alan Craft; Heribert Juergens; Odile Oberlin Journal: J Clin Oncol Date: 2018-09-06 Impact factor: 44.544
Authors: Safia K Ahmed; R Lor Randall; Steven G DuBois; William S Harmsen; Mark Krailo; Karen J Marcus; Katherine A Janeway; David S Geller; Joel I Sorger; Richard B Womer; Linda Granowetter; Holcombe E Grier; Richard G Gorlick; Nadia N I Laack Journal: Int J Radiat Oncol Biol Phys Date: 2017-08-24 Impact factor: 7.038