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- W2804327760 abstract "Objective The aim of this study was to compare response rates and survival in women with “platinum resistant” epithelial ovarian cancer (EOC) who received further platinum-based or non‑platinum chemotherapy for treatment at first relapse. Methods Patients with high-grade EOC (including fallopian tube and peritoneal cancer) of all histologies recruited to the Australian Ovarian Cancer Study (AOCS) and treated with platinum-based primary chemotherapy were included. Response to second-line chemotherapy, overall survival (OS) and survival after treatment for first progression (OS2) were determined in all histologies and separately in women with high-grade serous tumors. Results Of the 341 patients classified as platinum-resistant by the 6-month threshold, 243 (71%) were treated with chemotherapy at relapse. CA-125 response rates to platinum-based chemotherapy were significantly higher compared to non‑platinum chemotherapy (51% vs 21%, P < 0.001). Among patients with a platinum-free interval (PFI) of 3–6 months, OS2 in patients treated with platinum was significantly longer compared to individuals receiving non‑platinum-based treatment (median 17.67 months, 95% CI: 14.79–20.75 vs. 10.62 months, 95% CI: 8.02–12.72, P = 0.022). The patterns were similar when restricted to patients with high-grade serous histology. In patients with PFI <3 months, there was no significant difference in response or survival according to type of second-line treatment. Conclusions Our findings further question the use of a 6-month PFI as an arbitrary threshold for subsequent treatment decision-making. Some patients considered “platinum resistant” still derive clinical benefit from platinum-based chemotherapy. Biomarkers of platinum sensitivity are needed in clinical practice to identify potential responders who should be offered re-treatment with platinum." @default.
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- W2804327760 date "2018-08-01" @default.
- W2804327760 modified "2023-10-18" @default.
- W2804327760 title "Response rates to second-line platinum-based therapy in ovarian cancer patients challenge the clinical definition of platinum resistance" @default.
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- W2804327760 doi "https://doi.org/10.1016/j.ygyno.2018.05.020" @default.
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