Unlabelled: The objective of this phase II study was to determine the efficacy and toxicity of a combination of carboplatin and etoposide as salvage treatment, in previously treated patients with persistent or recurrent ovarian cancer following first-line cisplatin-based chemotherapy.
Patients And Methods: From July 1990 to August 1994, 58 patients were treated with 3-week cycles of chemotherapy consisting of carboplatin (200 mg/m2, D1) and etoposide (120 mg/m2, D1, D2). Criteria for evaluating previous response to cisplatin were strictly defined.
Results: The overall response rate was 36%, with five complete responses (CR, 9%), 16 partial responses (PR, 27%) and the median duration of response was 10 months (range: 4 to 38). In the group of patients who progressed during the first year following the diagnosis, the response was 1 CR and 2 PR (12%) and in the group of patients who progressed from the second year after diagnosis, 4 CR and 14 PR (56%), with a median survival of 8.5 and 21 months respectively (p = 0.0013). The response rate was 59% in the potentially platinum sensitive group versus 8.7% in the primary resistant group (0.02 < p < 0.05). Myelotoxicity was the main side-effect but did not appear to be cumulative. Grade 3 and grade 4 anemia were observed in 26% and 3% of the patients respectively, neutropenia in 14% and 2% and thrombocytopenia in 14% and 8.5%. One patient died of sepsis associated with neutropenia.
Conclusion: Treatment was easily manageable and well tolerated. The advantage of carboplatin and etoposide combination in potentially responsive patients is represented by the reduced nephrotoxicity, neurotoxicity and ototoxicity as compared with cisplatin containing regimen, with durable feasibility in outpatients. This second-line chemotherapy for ovarian cancer is effective as salvage treatment in potentially responsive patients with late recurrent tumors, while paclitaxel is the drug of choice for patients who have developped primary or secondary resistance to platin therapy.
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