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Reproductive Sciences
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Correlation of Human Leukocyte Antigen-G (HLA-G) Expression and Disease Progression in Epithelial Ovarian Cancer

Yong Wook Jung, MD

Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Women's Cancer Clinic, Yonsei University College of Medicine, Seoul, South Korea

Young Tae Kim, MD, PhD

Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Women's Cancer Clinic, Yonsei University College of Medicine, Seoul, South Korea, ytkchoi{at}yuhs.ac

Sang Wun Kim, MD, PhD

Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Women's Cancer Clinic, Yonsei University College of Medicine, Seoul, South Korea

Sunghoon Kim, MD, PhD

Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Women's Cancer Clinic, Yonsei University College of Medicine, Seoul, South Korea

Jae Hoon Kim, MD, PhD

Division of Gynecologic Oncology, Department of Obstetrics and Gynecology, Women's Cancer Clinic, Yonsei University College of Medicine, Seoul, South Korea

Nam Hoon Cho, MD, PhD

Department of Pathology, Yonsei University College of Medicine, Seoul, South Korea

Jae Wook Kim, MD, PhD

Department of Obstetrics and Gynecology, Kwandong University College of Medicine, Myongji hospital, Goyang, Korea

Human leukocyte antigen-G (HLA-G) expression has been reported to be relevant to cancer development and immune tolerance. The purpose of this study was to investigate the correlation between HLA-G expression and disease progression and to assess the use of HLA-G expression as a prognostic immunomarker in epithelial ovarian carcinoma. Human leukocyte antigen-G expression in 41 ovarian cancer tissues and 8 normal ovarian tissues was analyzed using immunohistochemistry and Western blot assay. Quantitative real-time reverse transcription polymerase chain reaction (RT-PCR) was used for HLA-G messenger RNA (mRNA) expression. Human leukocyte antigen-G mRNA and protein levels were significantly greater in advanced ovarian cancer tissues than in normal or early stage ovarian cancer tissues (P < .05 and P < .05, respectively). Patients with HLA-G expression had a significantly worse prognosis. There is a significant correlation between HLA-G immunoreactivity and patient survival in univariate analysis (P = .04). Our data was consistent with the concept that HLA-G expression might play a pivotal role in the development and disease progression of epithelial ovarian cancer.

Key Words: Human leukocyte antigen-G • ovarian cancer • prognosis.

This version was published on November 1, 2009

Reproductive Sciences, Vol. 16, No. 11, 1103-1111 (2009)
DOI: 10.1177/1933719109342131
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