Evaluation of pemetrexed in the treatment of epithelial ovarian cancer, fallopian tube cancer, and primary peritoneal cancer: a retrospective study
Abstract Background: The aim of this study was to evaluate the efficacy and safety of pemetrexed in the treatment of epithelial ovarian cancer, fallopian tube cancer, and primary peritoneal cancer.Results: Patients with platinum-sensitive and platinum-resistant epithelial ovarian cancer who received pemetrexed disodium chemotherapy at Qilu Hospital of Shandong University between January 2015 and December 2018 were identified. Dose delay and adjustment were permitted when serious side effects occurred. To observe the efficacy rate and follow up on its side effects, progression-free survival and overall survival after chemotherapy were monitored. A total of 96 cases were collected, and 340 cycles of chemotherapy were administered. The overall response rate (ORR) was 32.29% (31 patients), where 16 patients (16.67%) had a complete response, and 15 patients (15.62%) had a partial response. There were 68 platinum-resistant patients and 28 platinum-sensitive patients. The ORRs of platinum-sensitive and platinum-resistant patients were 42.86% (12 patients) and 27.94% (19 patients), respectively, p = 0.16. The median progression-free survival (PFS) was 3.52 months and 2.97 months (HR0.62, 95% CI, 0.37-1.02), respectively, and there was no significant difference (P = 0.06). The median overall survival (OS) of the two groups was 36 months and 18 months, respectively, and the difference was statistically significant (p= 0.01). There was no drug-related death in all patients, and all of the side effects were mild. The most common side effects were myelosuppression, gastrointestinal reactions and hepatotoxicity.Conclusion: Pemetrexed disodium is effective not only for platinum-sensitive but also platinum-resistant epithelial ovarian cancer. And the side effects are tolerable. Pemetrexed disodium may be a choice for epithelial ovarian cancer, fallopian tube cancer, and primary peritoneal cancer.