Task: Answer Verification
Input (English): Question: Is hER-2 expression prognostic in osteosarcoma ; a Children 's Oncology Group prospective biology study?
Answer: HER-2 expression is not prognostic in osteosarcoma in the context of this large prospective study. HER-2 expression cannot be used as a basis for stratification of therapy. Identification of potential prognostic factors should occur in the context of large multi-institutional biology studies.
Output (English): no