The prognostic value of P53 index in predicting the recurrence of early low-risk endometrial cancer.

AIM: We aimed to clarify the clinical value of P53 index in patients with early low-risk endometrial cancer (EC) and find an optimal cut-off value of P53 index for predicting the recurrence of these patients. METHODS: The clinicopathological data of 157 patients with early low-risk EC (stage 1A with grade 1 or 2 endometrioid EC) were analyzed. The optimal cut-off value of the P53 index was calculated by the receiver operating characteristic curve analysis and Youden index. Cox regression model was used to evaluate the independent prognostic predictors of recurrence of EC. Then all patients were divided into two groups according to the optimal cut-off value of the P53 index. Differences of the clinicopathological parameters between the two groups were compared. RESULTS: Multivariate analysis showed age PR (p = 0.020) and P53 (p = 0.001) were independent prognostic factors for the recurrence of EC. The value of P53 index was found to be the optimal cut-off point of 17.5% in estimating the recurrence of EC. The 5-year recurrence-free survival rates of patients in the low P53 index group (<17.5%) and the high P53 index group (≥17.5%) were 94.6% and 65.4% (p < 0.001). CONCLUSION: It has been revealed that the P53 index is a prognostic factor for recurrence in early low-risk EC. The optimal cut-off value of P53 index may contribute to the postoperative individualized treatment options for early low-risk EC patients.

Loss of Nuclear ARID-1A Expressions Is Associated with Hormone Receptor Status in Breast Cancers.

OBJECTIVE: Breast cancer is the most common cancer among women worldwide. Adenine thymine-rich interactive domain 1A (ARIDIA) is a tumor suppressor gene involved in chromatin remodeling and it encodes the ARIDIA protein. Recent studies have shown the loss of ARIDIA protein expression in different carcinomas may have a prognostic significance. In the present study, we aimed to evaluate the interactions between ARIDIA loss and molecular subtypes of breast carcinomas. MATERIALS AND METHODS: ARIDIA expressions were studied in 292 formalin- fixed, paraffin- embedded breast carcinoma specimens and its association with different pathological and clinical parameters was evaluated. RESULTS: Loss of ARIDIA expression was detected in 123 cases. There was no statistically significant association between ARID-1A expression and molecular subtype of breast carcinomas (p=0.110) or HER2 amplification (p=0.909). Contrarily, there was a significant association between ARIDIA expression and presence of estrogen (p=0.047) or progesterone receptors (p=0.023). Besides a statistically significant relationship was found between loss of ARID1A, and the presence of both in situ component (p=0.016) and lymph node metastasis (p=0.001). CONCLUSION: In this study, we have demonstrated that loss of ARID1A expression positively correlates with hormone receptor status as well as tumor aggressiveness.

Evaluation of human epididymal secretory protein 4 expression according to the molecular subtypes (luminal A, luminal B, human epidermal growth factor receptor 2-positive, triple-negative) of breast cancer.

BACKGROUND/AIMS: Human epididymal secretory protein 4 (HE4) is originally described as an epididymis-specific protein but more recently suggested to be a putative serum tumor marker for some tumors, including breast carcinomas. In this study, we aimed to investigate the interactions between HE4 expression and molecular subtypes of breast carcinomas. METHODS: HE4 expressions were studied in 242 formalin-fixed, paraffin-embedded breast carcinoma specimens and their association with different pathological and clinical parameters was evaluated. RESULTS: Immunohistochemical (IHC) staining for HE4 was negative in 3 (1.2%) cases, weakly positive (1+) in 7 (2.9%) cases, moderately positive (2+) in 58 (24.0%) cases, and strongly positive (3+) in 174 (71.9%) cases. A correlation between IHC HE4 staining grade and molecular groups was detected (P = 0.005). Furthermore, it was found that HE4 expression was strongly associated with histological tumor grade, c-erbB2 expression, and positive fluorescence in situ hybridization test results that detect human epidermal growth factor receptor 2 (HER2)/neu amplification (P = 0.022, P = 0.014, and P = 0.011). CONCLUSION: This study showed that HE4 expression is associated with HER2/neu amplification in breast cancers. These results may be commented as HE4 expression rises in patients with HER2/neu amplification. As is known, HER2/neu amplification is a poor diagnostic factor in breast cancer and HE4 expression is possibly associated with poor prognosis.