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- W2541024170 abstract "Purpose: In osteosarcoma, prognostic factors at diagnosis other than clinical stage have not been clearly identified. The aim of this study was to determine whether human epidermal growth factor receptor 2 (HER2)/erbB-2, p-glycoprotein, or p53 expression correlated with histologic response to preoperative chemotherapy or event-free survival. Patients and Methods: We performed a retrospective immunohistochemical study on material obtained from patients treated on the Memorial Sloan-Kettering Cancer Center T12 protocol between 1986 and 1993. Paraffin-embedded tissue was identified from 53 patients (73% of patients enrolled onto protocol) and stained for HER2/erbB-2, p53, and p-glycoprotein expression using standard monoclonal antibodies and methods. Results: At the time of initial biopsy, 20 (42.6%) of 47 samples demonstrated high levels of HER2/erbB-2 expression. Higher frequencies of expression were observed in samples from patients with metastatic disease at presentation and at the time of relapse. Expression of HER2/erbB-2 correlated with a significantly worse histologic response (P 5 .03). In patients presenting with nonmetastatic disease, expression of HER2/erbB-2 at the time of initial biopsy was associated with a significantly decreased event-free survival (47% v 79% at 5 years, P 5 .05). p53 and p-glycoprotein expression did not correlate with histologic response or patient eventfree survival. Conclusion: The correlation of HER2/erbB-2 expression with histologic response to preoperative chemotherapy and event-free survival in this study suggests that HER2/erbB-2 should be evaluated prospectively as a prognostic indicator. The correlation also suggests that clinical trials of antibodies that target this receptor, such as recombinant humanized anti-HER2 monoclonal antibody (Herceptin; Genentech, San Francisco, CA), should be considered for the treatment of osteosarcoma. J Clin Oncol 17:2781-2788. r 1999 by American Society of Clinical Oncology." @default.
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- W2541024170 date "1999-01-01" @default.
- W2541024170 modified "2023-09-26" @default.
- W2541024170 title "Expression o f H ER2/ erbB-2 C orrelates W ith S urvival in O steosarcoma" @default.
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