Objective: To assess the activity of laparoscopic Pressurized IntraPeritoneal Aerosol Chemotherapy (PIPAC) in women with recurrent, platinum-resistant ovarian cancer.
Methods: Prospective case series using repeated courses q 28-42 days of PIPAC containing cisplatin 7.5 mg/m(2) and doxorubicin 1.5 mg/m(2) at 12 mmHg and 37°C for 30 min. Objective tumor response was defined as tumor regression on histology and peritoneal carcinomatosis index (PCI) improvement on repeated video-laparoscopy.
Results: 34 PIPAC procedures were performed in 18 women, in 8 instances combined with cytoreductive surgery (CRS). Eight women had repeated PIPAC and objective tumor response was observed in 6 (complete remission: 1; partial remission: 2; stable disease: 3). Five adverse events WHO grade ≥ 2 were noted, 3 of them after combined CRS. No perioperative mortality occurred. Median follow-up was 192 days (min. 13-max. 639). Cumulative survival after 400 days was 62% and mean actuarial survival time was 442 days. In a multivariable regression analysis with objective tumor response (yes vs. no) as the dependent variable and PIPAC (1 vs.>1), patient age (<75 vs.≥75 years), serum CA-125 (<1000 vs.>1000 U/mL), and the presence of ascites (yes vs. no) as independent variables, PIPAC independently predicted objective tumor response.
Conclusion: PIPAC has activity in women with recurrent, platinum-resistant ovarian cancer and should be investigated in prospective clinical trials.
Keywords: Chemotherapy; High pressure; Intraabdominal; Platinum-resistant; Recurrent ovarian cancer.
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