Toxicity of intraperitoneal chemotherapy and risk factors for severe toxicity in optimally debulked ovarian cancer patients

Objective: To assess the effect and toxicity of intraperitoneal (IF) chemotherapy for epithelial ovarian cancer and to determine the risk factors for severe toxicity. Materials and methods: Patients who received IP chemotherapy after optimal debulking surgery for ovarian cancer between 2006 and 2012 were retrospectively reviewed. Clinical characteristics were compared between patients with none/Grade 1 or Grade 2 toxicity and those with Grade 3 or Grade 4 toxicity. Results: In 41 patients, the mean number of IP cycles administered was 5.6 and most patients (80.5%) completed at least six cycles. The reasons for discontinuation were catheter-related problems (30%), disease progression (20%), or drug-related adverse effects (30%). Grade 3 or Grade 4 toxicity was observed in 30 patients (73.2%). The rate of neoadjuvant chemotherapy was higher in the patients with Grade 3 or Grade 4 toxicity (37%) than in the patients without Grade 3 or Grade 4 toxicity (9%), however, this difference was not significant (p = 0.128). During a mean follow-up period of 33.6 months, tumor recurrence occurred in 20 (48.8%) patients and the median progression-free survival was 30.0 months. Conclusion: Despite the high rate of adverse events, IF chemotherapy can be delivered with a high completion rate and manageable toxicity to patients with optimally debulked ovarian cancer. Toxicity should be closely monitored in patients who have received neoadjuvant chemotherapy until a large prospective study-can be performed to determine its influence. Copyright (C) 2015, Taiwan Association of Obstetrics & Gynecology. Published by Elsevier Taiwan LLC. All rights reserved.