{"title":"Immunological impact of intraperitoneal and intravenous chemotherapy in ovarian cancer, translational analyses of the Phase 3 iPocc trial","authors":"Aiko Ogasawara , Hirokazu Matsushita , Tuan Zea Tan , Daisuke Shintani , Jieru Ye , Shoji Nagao , Ayako Demachi-Okamura , Daisuke Muraoka , Yukari Kobayashi , Kazuhiro Kakimi , Rui Yamaguchi , Keitaro Matsuo , Kouji Yamamoto , Keiichi Fujiwara , Ruby Yun-Ju Huang , David Shao Peng Tan , Kosei Hasegawa","doi":"10.1016/j.ygyno.2024.09.023","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>The iPocc trial, a randomized, global phase 3 study that compared intraperitoneal (IP) and intravenous (IV) carboplatin with dose-dense paclitaxel chemotherapy in epithelial ovarian cancer (EOC) patients, demonstrated improved progression-free survival in patients who received IP chemotherapy. The present study aimed to investigate the role of preexisting tumor immunity in the clinical outcomes of patients receiving IP chemotherapy.</div></div><div><h3>Methods</h3><div>This study involved analyzing patient data from the iPocc trial, selectively of those whose tumor specimens were preserved at the time of primary surgery. A total of 116 cases ((IP; <em>n</em> = 59), (IV; <em>n</em> = 57)) were subjected to microarray analysis. Single-sample gene set enrichment analyses were performed to evaluate the tumor immune microenvironment.</div></div><div><h3>Results</h3><div>Patients with enhanced tumor infiltration of T cells, natural killer (NK) cells, and cytotoxic lymphocytes in the IP group had a longer overall survival (OS) than those in the IV group, but not in the group with low infiltration. IP therapy improved the OS of patients with high expression of immune-related genes such as CD8A and FOXP3. In patients' subdivided into “immune Hot” and “immune Cold” groups based on hierarchical clustering analysis using four parameters representing “Innate immunity,” “T cells,” “IFNG response” and “Inhibitory molecules,” IP therapy significantly improved prognosis in the “immune Hot” group, but not in the “immune Cold” group compared to that of IV therapy.</div></div><div><h3>Conclusions</h3><div>IP chemotherapy enhances the survival rates of patients with EOC with an immune-Hot phenotype in the tumor microenvironment prior to treatment.</div><div>(Japan Registry of Clinical Trials number, jRCTs031180141.)</div></div>","PeriodicalId":12853,"journal":{"name":"Gynecologic oncology","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Gynecologic oncology","FirstCategoryId":"3","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0090825824011491","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OBSTETRICS & GYNECOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Background
The iPocc trial, a randomized, global phase 3 study that compared intraperitoneal (IP) and intravenous (IV) carboplatin with dose-dense paclitaxel chemotherapy in epithelial ovarian cancer (EOC) patients, demonstrated improved progression-free survival in patients who received IP chemotherapy. The present study aimed to investigate the role of preexisting tumor immunity in the clinical outcomes of patients receiving IP chemotherapy.
Methods
This study involved analyzing patient data from the iPocc trial, selectively of those whose tumor specimens were preserved at the time of primary surgery. A total of 116 cases ((IP; n = 59), (IV; n = 57)) were subjected to microarray analysis. Single-sample gene set enrichment analyses were performed to evaluate the tumor immune microenvironment.
Results
Patients with enhanced tumor infiltration of T cells, natural killer (NK) cells, and cytotoxic lymphocytes in the IP group had a longer overall survival (OS) than those in the IV group, but not in the group with low infiltration. IP therapy improved the OS of patients with high expression of immune-related genes such as CD8A and FOXP3. In patients' subdivided into “immune Hot” and “immune Cold” groups based on hierarchical clustering analysis using four parameters representing “Innate immunity,” “T cells,” “IFNG response” and “Inhibitory molecules,” IP therapy significantly improved prognosis in the “immune Hot” group, but not in the “immune Cold” group compared to that of IV therapy.
Conclusions
IP chemotherapy enhances the survival rates of patients with EOC with an immune-Hot phenotype in the tumor microenvironment prior to treatment.
(Japan Registry of Clinical Trials number, jRCTs031180141.)
期刊介绍:
Gynecologic Oncology, an international journal, is devoted to the publication of clinical and investigative articles that concern tumors of the female reproductive tract. Investigations relating to the etiology, diagnosis, and treatment of female cancers, as well as research from any of the disciplines related to this field of interest, are published.
Research Areas Include:
• Cell and molecular biology
• Chemotherapy
• Cytology
• Endocrinology
• Epidemiology
• Genetics
• Gynecologic surgery
• Immunology
• Pathology
• Radiotherapy