BACKGROUND: Imatinib mesylate is a small molecule inhibitor of certain tyrosine kinases, most notably the chimeric bcr-abl fusion protein found in CML. It also inhibits KIT and PDGF receptor tyrosine kinases in vitro. Ewing sarcoma, osteosarcoma, neuroblastoma, desmoplastic small round cell, and synovial sarcomas often overexpress KIT or the PDGF receptor. A phase II study of imatinib in children and young adults with select solid tumors was performed. PROCEDURE: Patients less than 30 years of age with refractory or recurrent Ewing sarcoma, osteosarcoma, neuroblastoma, desmoplastic small round cell, synovial sarcomas or GIST were eligible. Imatinib was administered daily for 28 day courses at a dose of 440 mg/m(2)/day. Responses were assessed according to Response Evaluation Criteria in Solid Tumor (RECIST). RESULTS: Seventy eligible patients, 48 male and 22 female, were enrolled and 59 were evaluable for response. Only one partial response was seen among 24 patients with Ewing sarcoma. There were no other objective responses. Hemorrhagic pleural effusions occurred in seven patients with pulmonary lesions, four of whom had progressive disease at the time of the hemorrhage. Intratumoral bleeding was reported in three additional patients. CONCLUSION: Imatinib as a single agent at a dose of 440 mg/m(2)/day demonstrated little or no activity as a single agent in children with relapsed or refractory Ewing sarcoma, osteosarcoma, neuroblastoma, or desmoplastic small round cell tumors. (c) 2007 Wiley-Liss, Inc.
BACKGROUND:Imatinib mesylate is a small molecule inhibitor of certain tyrosine kinases, most notably the chimeric bcr-abl fusion protein found in CML. It also inhibits KIT and PDGF receptor tyrosine kinases in vitro. Ewing sarcoma, osteosarcoma, neuroblastoma, desmoplastic small round cell, and synovial sarcomas often overexpress KIT or the PDGF receptor. A phase II study of imatinib in children and young adults with select solid tumors was performed. PROCEDURE: Patients less than 30 years of age with refractory or recurrent Ewing sarcoma, osteosarcoma, neuroblastoma, desmoplastic small round cell, synovial sarcomas or GIST were eligible. Imatinib was administered daily for 28 day courses at a dose of 440 mg/m(2)/day. Responses were assessed according to Response Evaluation Criteria in Solid Tumor (RECIST). RESULTS: Seventy eligible patients, 48 male and 22 female, were enrolled and 59 were evaluable for response. Only one partial response was seen among 24 patients with Ewing sarcoma. There were no other objective responses. Hemorrhagic pleural effusions occurred in seven patients with pulmonary lesions, four of whom had progressive disease at the time of the hemorrhage. Intratumoral bleeding was reported in three additional patients. CONCLUSION:Imatinib as a single agent at a dose of 440 mg/m(2)/day demonstrated little or no activity as a single agent in children with relapsed or refractory Ewing sarcoma, osteosarcoma, neuroblastoma, or desmoplastic small round cell tumors. (c) 2007 Wiley-Liss, Inc.
Authors: Viswanath Reddy Belum; Courtney Washington; Christine A Pratilas; Vincent Sibaud; Franck Boralevi; Mario E Lacouture Journal: Pediatr Blood Cancer Date: 2015-02-12 Impact factor: 3.167
Authors: Joanne P Lagmay; Mark D Krailo; Ha Dang; AeRang Kim; Douglas S Hawkins; Orren Beaty; Brigitte C Widemann; Theodore Zwerdling; Lisa Bomgaars; Anne-Marie Langevin; Holcombe E Grier; Brenda Weigel; Susan M Blaney; Richard Gorlick; Katherine A Janeway Journal: J Clin Oncol Date: 2016-07-11 Impact factor: 44.544
Authors: Roberta Vitali; Camillo Mancini; Vincenzo Cesi; Barbara Tanno; Mariateresa Mancuso; Gianluca Bossi; Ying Zhang; Robert V Martinez; Bruno Calabretta; Carlo Dominici; Giuseppe Raschellà Journal: Clin Cancer Res Date: 2008-07-15 Impact factor: 12.531