Search

Objective: To study the relationship between the angiomotin (Amot) and Yes-associated protein 1 (YAP1) expression and clinicopathological parameters and prognosis in type I endometrial cancer (EC) tissues. Methods: 75 type I EC patients who were diagnosed and treated in Affiliated Hospital of Xuzhou Medical University from January 2014 to June 2017 were selected as the study object (EC group), 30 patients with pathologically confirmed atypical hyperplasia endometrial tissue specimens diagnosed and treated during the same period were selected as the atypical hyperplasia endometrial group, and 30 patients with pathologically confirmed normal endometrial tissue specimens during the same period were selected as the normal endometrial group. The Amot and YAP1 protein expressions in each group were detected by immunohistochemistry. Spearman rank correlation was used to analyze the correlation between Amot and YAP1 protein expression in type I EC cancer tissues. The differences of Amot and YAP1 protein expression in cancer tissues of type I EC patients with different clinicopathological characteristics were compared. Kaplan-Meier analysis (Log-rank test) was used to analyze the relationship between the expression of Amot and YAP1 protein and the survival prognosis of type I EC patients. Univariate and multivariate COX regression analysis was used to analyze the factors affecting the survival prognosis of type I EC patients. Results: The positive rates of Amot and YAP1 protein expression in type I EC tissues were 80.00%(60/75) and 85.33%(64/75), respectively, which were significantly higher than those in atypical hyperplasia endometrial tissue 43.33% (13/30) and 46.67% (14/30), and the difference was statistically significant (all P＜0.05). The positive rates of Amot and YAP1 protein in atypical hyperplasia endometrial tissue were significantly higher than those in normal endometrial tissue with 16.67% (5/30) and 20.00% (6/30), and the difference was statistically significant (all P＜0.05). There was a significant positive correlation between Amot and YAP1 protein expression in type I EC cancer tissues(P＜0.05). The positive rates of Amot and YAP1 protein expression in EC type I patients with different International Federation of Gynecology and Obstetrics (FIGO) stages, histological grades and lymph node metastasis were statistically significant (P＜0.05). The cumulative survival time of Amot-positive expression typeⅠEC patients was significantly lower than that of Amot-negative expression typeⅠEC patients (P＜0.05). The cumulative survival time of patients with YAP1-positive expression of typeⅠEC was significantly lower than that of patients with YAP1-negative expression of typeⅠEC (P＜0.05). Amot-positive expression, YAP1 positive expression, FIGO stage Ⅲ and lymph node metastasis were independent risk factors for poor prognosis in patients with EC type I (P＜0.05). Conclusion: The Amot and YAP1 protein positive expression increased in type I EC cancer tissues, which are related to FIGO stage, histological grade and lymph node metastasis. The positive expression of Amot protein and YAP1 protein is one of the risk factors affecting the poor prognosis of patients with type I EC. [ABSTRACT FROM AUTHOR]