NRG Oncology NRG-GY018 Study Demonstrates Significantly Improved Progression Free Survival Outcomes for Women with Advanced or Recurrent Endometrial Cancer with the Addition of Pembrolizumab to Chemotherapy

February 03 2023

NRG Oncology Phase III clinical trial, NRG-GY018, evaluating pembrolizumab in combination with standard of care chemotherapy (carboplatin and paclitaxel) met its primary endpoint of progression free survival (PFS) for the treatment of patients with stage III-IV or recurrent endometrial carcinoma, regardless of mismatch repair status. A pre-specified interim analysis, conducted by an independent Data Monitoring Committee, demonstrates that pembrolizumab in combination with chemotherapy has a statistically significant and clinically meaningful improvement in PFS compared with chemotherapy alone in both study cohorts, mismatch repair deficient (dMMR) and mismatch repair proficient (pMMR). The full results of this trial will be presented at an upcoming scientific conference.

NRG-GY018, a randomized, blinded, placebo-controlled study, accrued 819 women with stage III-IV or recurrent endometrial cancer. Two independent cohorts were evaluated, patients with endometrial cancers that are dMMR and patients with endometrial cancers that are pMMR. Patients were randomly assigned to receive pembrolizumab combined with carboplatin and paclitaxel (for a planned six, 3-week cycles), followed by pembrolizumab maintenance (for up to fourteen, 6 week cycles) or placebo combined with carboplatin and paclitaxel, followed by placebo maintenance.

“Patients with advanced stage or recurrent endometrial cancer, the most common type of gynecologic cancer in the U.S., face a poor prognosis with limited treatment options. This is particularly notable in patients who progress after prior platinum-based adjuvant therapy with disease not amenable to curative surgery or radiation,” stated Ramez Eskander, MD, of the University of California San Diego Moores Cancer Center and the Principal Investigator of the NRG-GY018 trial. “In this study, pembrolizumab in combination with carboplatin and paclitaxel resulted in a statistically significant and clinically meaningful improvement in PFS in both the dMMR and pMMR study populations.We look forward to presenting these exciting findings at an upcoming scientific congress.”

This project was supported by the NRG Oncology Operations grant U10CA180868 and the NRG Oncology SDMC grant U10CA180822 from the National Cancer Institute (NCI), part of the National Institutes of Health and conducted by the NCI National Clinical Trials Network. Funding and support were also received from Merck & Co., Inc. through a Cooperative Research and Developmental Agreement with NCI.NRG-GY018 was conducted with funding supplemental to the CRADA from Merck in an Agreement between Merck and The GOG Foundation d/b/a NRG Oncology Philadelphia East.

About NRG Oncology
NRG Oncology conducts practice-changing, multi-institutional clinical and translational research to improve the lives of patients with cancer. Founded in 2012, NRG Oncology is a Pennsylvania-based nonprofit corporation that integrates the research of the legacy National Surgical Adjuvant Breast and Bowel Project (NSABP), Radiation Therapy Oncology Group (RTOG), and Gynecologic Oncology Group (GOG) programs. The research network seeks to carry out clinical trials with emphases on gender-specific malignancies, including gynecologic, breast, and prostate cancers, and on localized or locally advanced cancers of all types. NRG Oncology’s extensive research organization comprises multidisciplinary investigators, including medical oncologists, radiation oncologists, surgeons, physicists, pathologists, and statisticians, and encompasses more than 1,300 research sites located world-wide with predominance in the United States and Canada. NRG Oncology is supported primarily through grants from the National Cancer Institute (NCI), part of the National Institutes of Health, and is one of five research groups in the NCI’s National Clinical Trials Network.

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