To determine whether gene expression analysis of primary tumor samples before and after chemotherapy are predictive of long-term survival in pediatric patients with bone sarcomas (Ewings sarcoma (ES) and Osteosarcoma(OS)).
Study Type
OBSERVATIONAL
Enrollment
163
Stanford University School of Medicine
Stanford, California, United States
% necrosis post chemotherapy
Time frame: his is measured at the time of sample collection since we are looking for % necrosis in the sample we are collecting
overall survival and event free survival
Time frame: This is measured at the time the patient dies, or at the time when patient relapses from their disease. There is no set time since this outcome is individually assessed.
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