Chemotherapy is of Value in Second Line and Beyond, Relapsed High-grade, Serous Epithelial Ovarian Cancer: An Analysis of Outcomes Obtained With Oral Etoposide

Background: Epithelial ovarian cancer is chemotherapy responsive, and multiple lines of chemotherapy are often given. However, there are few data with regard to its effectiveness in later lines. Our aim was to assess its benefit in the high-grade, serous subtype relative to the line of therapy, using etoposide as the example. Methods: Women treated with oral etoposide at the British Columbia Cancer Agency upon recurrence/progression in the years 2000 to 2010 were reviewed. Kaplan-Meier and Cox regression methods were used to correlate line of therapy with overall survival, progression-free survival, and interval between etoposide initiation and next progression or death (EPFS). Results: A total of 219 women, median age 61, received etoposide as second (17%), third (30%), fourth (26%), fifth (17%), and sixth to eighth (11%) lines of therapy. The median number of cycles was 2 to 4. Patients who received etoposide as fourth-line to eighth-line treatment had a significantly longer median overall survival and initial progression-free survival (from diagnosis to first relapse) when compared with those who received it as second-line to third-line treatment (47.8 vs. 25.8 mo, P

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