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  • Title: Multivariate survival analysis of clinicopathologic features in surgical stage I endometrioid carcinoma including analysis of HER-2/neu expression.
    Author: Nazeer T, Ballouk F, Malfetano JH, Figge H, Ambros RA.
    Journal: Am J Obstet Gynecol; 1995 Dec; 173(6):1829-34. PubMed ID: 8610771.
    Abstract:
    OBJECTIVE: We previously described vascular invasion-associated changes, defined as the presence of vascular invasion or perivascular lymphocytic infiltrates, as key prognostic indicators in stage I endometrioid carcinoma. The current study was undertaken to examine the prognostic value of HER-2/neu expression in relation to other factors, including vascular invasion-associated changes, in surgical stage I endometrioid carcinoma. STUDY DESIGN: Seventy-one patients with surgical stage I endometrioid carcinoma treated by hysterectomy and followed up were randomly chosen for retrospective analysis of prognostic indicators including standard clincopathologic features, deoxyribonucleic acid ploidy, and HER-2/neu expression. The latter was examined by an objective computerized quantitative immunohistochemical system. RESULTS: By univariate analysis many factors were found to correlate with outcome, including age, tumor grade, depth of invasion, ploidy, HER-2/neu expression, and vascular invasion-associated changes. By multivariate analysis only vascular invasion-associated changes, aneuploidy, and HER-2/neu overexpression were found to independently correlate with survival. Stratification of patients on the basis of these three features revealed survival rates of 100%, 92%, and 60% when none, one, and two or three features were present, respectively. CONCLUSION: This study suggests that HER-2/neu expression correlated with outcome independent of other factors in endometrial carcinoma and may aid in estimating prognosis. The prognostic value of HER-2/neu overexpression independent of vascular invasion suggests that this factor may operate by increasing the ability of tumor cells to grow at a distal site once vascular invasion occurs.
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