OBJECTIVE: To evaluate the clinico-pathologic characteristics and survival outcome associated with overexpression of Her-2/neu in patients with uterine serous carcinoma (USC). METHODS: Twenty-five patients with a confirmed pathologic diagnosis of USC and available paraffin embedded tissue samples treated at the Johns Hopkins Medical Institutions from 1/1/1992 through 12/31/2000 were identified retrospectively. Her-2/neu expression was evaluated by immunohistochemistry using HercepTest (DAKO). Clinical data were abstracted from medical records. Clinico-pathologic characteristics associated with Her-2/neu overexpression like staging, histology, lymph-vascular space involvement, and myometrial invasion were evaluated using logistic regression analysis and Fisher's exact test. Analyses of overall survival time were performed using the Kaplan-Meier method and Cox proportional hazards regression models. RESULTS: Twelve (48%) of the 25 USC cases demonstrated Her-2/neu overexpression. There was a significant difference in Her-2/neu overexpression and surgical staging (81.8% vs. 28.6%, P = 0.01). Survival analysis according to primary tumor characteristics revealed that overexpression of Her-2/neu was significantly associated with a worse survival outcome (HR = 6.58, 95%CI: 1.36-31.89, P = 0.02). CONCLUSIONS: Her-2/neu overexpression is associated with advanced surgical stage USC and poor survival outcome. These data may be useful in guiding the clinical management of patients with USC and have potential implications for the development of novel treatment strategies.
OBJECTIVE: To evaluate the clinico-pathologic characteristics and survival outcome associated with overexpression of Her-2/neu in patients with uterine serous carcinoma (USC). METHODS: Twenty-five patients with a confirmed pathologic diagnosis of USC and available paraffin embedded tissue samples treated at the Johns Hopkins Medical Institutions from 1/1/1992 through 12/31/2000 were identified retrospectively. Her-2/neu expression was evaluated by immunohistochemistry using HercepTest (DAKO). Clinical data were abstracted from medical records. Clinico-pathologic characteristics associated with Her-2/neu overexpression like staging, histology, lymph-vascular space involvement, and myometrial invasion were evaluated using logistic regression analysis and Fisher's exact test. Analyses of overall survival time were performed using the Kaplan-Meier method and Cox proportional hazards regression models. RESULTS: Twelve (48%) of the 25 USC cases demonstrated Her-2/neu overexpression. There was a significant difference in Her-2/neu overexpression and surgical staging (81.8% vs. 28.6%, P = 0.01). Survival analysis according to primary tumor characteristics revealed that overexpression of Her-2/neu was significantly associated with a worse survival outcome (HR = 6.58, 95%CI: 1.36-31.89, P = 0.02). CONCLUSIONS:Her-2/neu overexpression is associated with advanced surgical stage USC and poor survival outcome. These data may be useful in guiding the clinical management of patients with USC and have potential implications for the development of novel treatment strategies.
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