Clinical relevance of CD44 surface expression in advanced stage serous epithelial ovarian cancer: a prospective study.

Abstract:

PURPOSE:Cluster of differentiation (CD) 44 is a cell surface receptor that correlates with the development of drug resistance in epithelial ovarian cancer (EOC). Here, we prospectively investigated the clinical impact of CD44 expression on the development of chemoresistance, and on disease-free and overall survival in EOC. METHODS:This study included patients with primary serous EOC that was at International Federation of Gynecology and Obstetrics stages IIIB-IVA and tumors that were CD44 positive and negative in a 1:1 ratio. All patients underwent primary surgical cytoreduction, followed by six cycles of combined paclitaxel and carboplatin chemotherapy every 3 weeks. The treatment was considered complete after the chemotherapy had finished. All patients were followed up for 24 months after completing their chemotherapy. RESULTS:Of the 96 patients with serous EOC at stages IIIB-IVA, 51 % of the tumors were negative for the expression of CD44 and 49 % showed variable CD44 expression. Patients who had CD44-positive tumors had statistically significant shorter disease-free (p ≤ 0.001) and overall survival (p ≤ 0.001) intervals compared with patients with CD44-negative tumors. The hazard ratio for death was 6.8 (95 % confidence interval 2.4-19.2, p ≤ 0.001) among the patients with CD44-positive tumors. A multivariate analysis showed that carboplatin-resistant or carboplatin-refractory EOC was the only independent predictive factor for death. CONCLUSIONS:CD44 expression contributes to the development of carboplatin resistance in advanced serous EOC, and it may contribute to worse prognoses for patients, but it is neither an independent predictor of survival nor of recurrence.

authors

Elzarkaa AA,Sabaa BE,Abdelkhalik D,Mansour H,Melis M,Shaalan W,Farouk M,Malik E,Soliman AA

doi

10.1007/s00432-016-2116-5

subject

Has Abstract

pub_date

2016-05-01 00:00:00

pages

949-58

issue

5

eissn

0171-5216

issn

1432-1335

pii

10.1007/s00432-016-2116-5

journal_volume

142

pub_type

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