PURPOSE: First-line treatments for (EOC) have been platinum-based for more than three decades; 16 years ago the landmark Gynecologic Oncology Group (GOG158) non-inferiority trial for optimal stage III patients led to the universal adoption of IV carboplatin/paclitaxel as the standard systemic regimen. However, IV cisplatin-based doublets were the comparators in the first 3 GOG studies assessing IP cisplatin-based regimens. Our purpose is to describe recent randomized trials that have assessed IP carboplatin and highlight quality of life (QOL) findings.

METHODS: Gynecology Oncology Group (GOG) studies comparing IP to IV cisplatin regimens formed the basis of the National Cancer Institute (NCI) 2005 Clinical Announcement that considered IP cisplatin-based therapy as a new standard for optimally debulked EOC. Recently, randomized trials with IV carboplatin/paclitaxel-based regimens as comparators have been part of preliminary reports: 1) GOG252 on March 2016 at the Society of Gynecologic Oncology (SGO), completing accrual in 2015, and 2) OV21/PETROC neoadjuvant randomized ‘pick the winner’ study at the June 2016 American Society of Clinical Oncology (ASCO). Beyond 2016, additional data is expected from the ongoing randomized study by the Japan GOG of IP versus IV carboplatin, --both with IV paclitaxel.

RESULTS: GOG252, the largest Phase III study of IV versus IP platinum-based therapy for the first line treatment of ovarian cancer, is the first IP GOG trial with a IV carboplatin-based control arm. None of the 3 arms differed in median progression-free survival. However, the companion QOL study, --contrary to prior GOG studies utilizing IV cisplatin-based controls—showed a clear advantage for the two non-cisplatin arms (not different whether IV or IP). In the OV21/PETROC trial, adverse toxicities coupled with no obvious therapeutic advantage led to dropping the IP cisplatin arm. With additional accrual in the two remaining arms, IP carboplatin was superior to IV carboplatin in time to progression.

CONCLUSIONS: Cisplatin has an unfavorable impact on QOL in women with ovarian cancer whether given IP or IV relative to carboplatin. With IV carboplatin as part of the comparator, unfavorable effects of cisplatin-based chemotherapy are further highlighted. IP carboplatin randomized studies and their final publications are awaited. On the other hand, revisiting the role of IP cisplatin at this time is not warranted.

Citation Format: Franco Muggia MD, Lari Wenzel, PhD. INTRAPERITONEAL (IP) THERAPY FOR ADVANCED STAGE EPITHELIAL OVARIAN CANCER (EOC): THE CURRENT SPOTLIGHT IS ON CARBOPLATIN AND QUALITY OF LIFE [abstract]. In: Proceedings of the 11th Biennial Ovarian Cancer Research Symposium; Sep 12-13, 2016; Seattle, WA. Philadelphia (PA): AACR; Clin Cancer Res 2017;23(11 Suppl):Abstract nr NTOC-101.