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- W2069451423 abstract "Purpose To evaluate HER-2 expression and amplification in a large cohort of endometrial cancer with complete surgical staging and outcome data. Patients and Methods A tissue microarray was constructed of 483 patients with endometrial cancer of diverse histologic type and stage and tested for HER-2 expression and amplification using current standards of practice. There was outcome data for 83% of all patients and 81% with complete surgical staging. Results Both expression and amplification of HER-2 was associated with high-grade (P = .0001) and high stage (P = .0001) endometrial cancer. The highest rate of HER-2 expression and amplification was seen in serous carcinoma (43% and 29%), while grade 1 endometrioid adenocarcinoma showed the lowest levels (3% and 1%). For all histologic types, the rate of HER-2 expression and amplification was remarkably different (P < .0001) for grade 3 cancers (31% and 15%) versus grade 2 (7% and 3%) and grade 1 cancers (3% and 1%), with similar results for endometrioid type (P < .0001). Both HER-2 expression and amplification correlated with disease-specific survival and progression-free survival in univariate analyses. By multivariate analysis HER-2 expression in the presence of amplification (P = .012) correlated with overall survival, but not expression in the absence of amplification. Overall survival was significantly shorter (P = .0001) in patients who overexpressed (median, 5.2 years) and/or showed amplification of HER-2 (median, 3.5 years) versus those that did not (median of all cases, 13 years). Conclusion Our results would suggest that HER-2 is an important oncogene in high grade and stage endometrial cancer, but plays only a minor role in the much more common low grade and stage tumors that encompass the majority of clinical practice." @default.
- W2069451423 created "2016-06-24" @default.
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- W2069451423 date "2006-05-20" @default.
- W2069451423 modified "2023-10-14" @default.
- W2069451423 title "HER-2 Is an Independent Prognostic Factor in Endometrial Cancer: Association With Outcome in a Large Cohort of Surgically Staged Patients" @default.
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- W2069451423 doi "https://doi.org/10.1200/jco.2005.03.4827" @default.
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