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[Correlation between estrogen receptor status and clinicopathologic parameters in endometrial cancer: a comparative
Yue Wang1, Xiao-long Ma, Chen-guang Xi
1Department of Pathology, Peking University Health Science Center, Peking University Third Hospital, Beijing 100191, China.
Objective:
To compare the efficiency of three different estrogen receptor (ER) immunostaining scoring systems by analyzing the correlation between ER status and clinicopathologic features for prediction of prognosis of patients with endometrial carcinoma (EC).
Methods:
ER immunostaining (EnVision method) was performed in 160 type I EC and 39 type II EC paraffin samples and was scored by ASCO/CAP criterion, H-Score and Allred scoring system. Correlation between ER status and clinicopathologic features was statistically analyzed.
Results:
ASCO/CAP criterion, H-Score and Allred (cutoff point: 4-8) scoring system showed high concordance in the following aspects. In EC patients, ER status was significantly associated with presurgical CA125 levels (P = 0.015, P = 0.007, P = 0.023), histologic grades (all P < 0.01) and PR status (all P < 0.01). In type I EC cohort, ER status was significantly correlated with PR status (P = 0.008, P < 0.01, P < 0.01) and p53 status (P = 0.042, P = 0.001, P < 0.01). As of the predictive value of ER status for type I EC patient age, ASCO/CAP (P = 0.027) and H-Score criteria (P = 0.035) were both superior to Allred score system (P = 0.064). Among well-known predictive clinicopathologic parameters, including FIGO stage, lympho-vascular involvement, lymph node metastasis, depth of myometrial invasion and omental involvement, ASCO/CAP scoring offered a better correlation (P = 0.005, P = 0.002, P = 0.021, P = 0.067, and P = 0.067, respectively) than H-Score (P > 0.05) and Allred scoring system (P > 0.05).
Conclusions:
Compared with H-Score and Allred scoring system, ASCO/CAP criterion is more closely correlated with predictive clinicopathologic parameters. Therefore it may be used as a simple, highly efficient prognostic indicator for EC patients in routine practice.
