Advanced stage clear-cell epithelial ovarian cancer: the Hellenic Cooperative Oncology Group experience

Gynecologic Oncology
Dimitrios PectasidesMeletios A Dimopoulos

Abstract

Ovarian clear-cell carcinomas (OCCC) are known to be possibly resistant to platinum-based chemotherapy and to have a poorer prognosis with respect to other subtypes of epithelial ovarian cancer (EOC). This study was undertaken to compare response and survival to platinum-based chemotherapy between patients with advanced stage III and IV OCCC and serous EOC (sEOC). A retrospective analysis was performed in patients with advanced stage of OCCC treated with first-line platinum-based chemotherapy in the context of several study protocols of the Hellenic Cooperative Oncology Group (HeCOG) between 1/2/1987 and 31/10/2003. The outcome was compared to that of patients with sEOC treated according to the same protocols during the same study period. One hundred and five patients (35 stage III and IV OCCC, 70 stage III and IV sEOC) treated with platinum-based chemotherapy were analyzed. The overall response rate for OCCC was 45% (complete response 25%) (95% CI, 23.1% to 68.5%) and 81% (complete response 46%) (95% CI, 67.4% to 91.1%) for sEOC. The overall response rate was significantly higher for sEOC (P = 0.008). In the subgroup of stage III patients, the rate of complete responders was higher among sEOC patients (P = 0.023). After a medi...Continue Reading

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