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J Cancer 2016; 7(3):289-296. doi:10.7150/jca.13432 This issue Cite

Research Paper

The Lymphocyte-Monocyte Ratio Predicts Patient Survival and Aggressiveness of Ovarian Cancer

Wan Kyu Eo¹, Hye Jung Chang¹, Sang Hoon Kwon², Suk Bong Koh³, Young Ok Kim⁴, Yong Il Ji⁵, Hong-Bae Kim⁶, Ji Young Lee⁷, Dong Soo Suh⁸, Ki Hyung Kim^8*✉, Ik Jin Chang^9*✉, Heung Yeol Kim⁹, Suk Choo Chang¹⁰

1. Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul, Korea;
2. Department of Obstetrics and Gynecology, Keimyung University, School of Medicine, Daegu, Korea;
3. Department of Obstetrics and Gynecology, Catholic University of Daegu, School of Medicine, Daegu, Korea;
4. Department of Pathology, College of Medicine, Kosin University, Busan, Korea;
5. Department of Obstetrics and Gynecology, College of Medicine, Inje University, Busan, Korea;
6. Department of Obstetrics and Gynecology, Kangnam Sacred Heart Hospital, Hallym University Medical Center, Hallym University College of Medicine, Seoul, Korea;
7. Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea;
8. Department of Obstetrics and Gynecology, Pusan National University School of Medicine; Biomedical Research Institute, Pusan National University Hospital, Busan, Korea;
9. Department of Obstetrics and Gynecology, College of Medicine, Kosin University, Busan, Korea;
10. Department of Plastic and Reconstructive Surgery, College of Medicine, Kyung Hee University, Seoul, Korea.
*These authors equally contributed to this work.

✉ Corresponding author: Ki Hyung Kim, M.D., Ph.D., Department of Obstetrics and Gynecology, Pusan National University School of Medicine; Biomedical Research Institute, Pusan National University Hospital, Busan 602-739, Korea; Phone: +82-51-990-6226; Fax: +82-51-990-3300; e-mail: kihyungkimpnucom. Co-correspondence: Ik Jin Chang, M.D., Ph.D., Department of Obstetrics and Gynecology, Kosin University College of Medicine, 34, Amnam-dong, Seo-gu, Busan 602-702, Korea; Phone: +82-51-990-3088; Fax: +82-51-241-5458; E-mail: ijchangkucom. More

Abstract

Objective: To measure the prognostic value of the lymphocyte-monocyte ratio (LMR) in patients with epithelial ovarian cancer (EOC).

Methods: We retrospectively examined the LMR as a prognosticator in a cohort of 234 patients with EOC who underwent surgical resection. Patients were categorized into two different groups based on the LMR (LMR-low and LMR-high) using cut-off values determined by receiver operating characteristic (ROC) curve analysis. The objective of the study was to assess the effect of the LMR on progression-free survival (PFS) and overall survival (OS), and to validate the LMR as an independent predictor of survival.

Results: Using the data collected from the whole cohort, the optimized LMR cut-off value selected on the ROC curve was 2.07 for both PFS and OS. The LMR-low and LMR-high groups included 48 (20.5%) and 186 patients (79.5%), respectively. The 5-year PFS rates in the LMR-low and LMR-high groups were 40.0 and 62.5% (P < 0.0001), respectively, and the 5-year OS rates in these two groups were 42.2 and 67.2% (P < 0.0001), respectively. On multivariate analysis, we identified age, International Federation of Gynecology and Obstetrics (FIGO) stage, and cancer antigen 125 levels to be the strongest valuable prognostic factors affecting PFS (P = 0.0421, P = 0.0012, and P = 0.0313, respectively) and age, FIGO stage, and the LMR as the most valuable prognostic factors predicting OS (P = 0.0064, P = 0.0029, and P = 0.0293, respectively).

Conclusion: The LMR is an independent prognostic factor affecting the survival of patients with EOC.

Keywords: Monocytes, Lymphocytes, Ovarian neoplasms

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