Prognostic impact of programmed cell death 1 ligand 1 expression in human leukocyte antigen class I-positive hepatocellular carcinoma after curative hepatectomy
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  • 作者:Yuichiroh Umemoto (1)
    Shinji Okano (1) (2) (3)
    Yoshihiro Matsumoto (1)
    Hidekazu Nakagawara (1)
    Rumi Matono (1)
    Shohei Yoshiya (1)
    Yo-ichi Yamashita (1)
    Tomoharu Yoshizumi (1)
    Toru Ikegami (1)
    Yuji Soejima (1)
    Mamoru Harada (4)
    Shinichi Aishima (5)
    Yoshinao Oda (5)
    Ken Shirabe (1)
    Yoshihiko Maehara (1)

    1. Department of Surgery and Science
    ; Graduate School of Medical Sciences ; Kyushu University ; 3-1-1 Maidashi ; Higashi-ku ; Fukuoka ; 812-8582 ; Japan
    2. Department of Innovative Applied Oncology
    ; Graduate School of Medical Sciences ; Kyushu University ; 3-1-1 Maidashi ; Higashi-ku ; Fukuoka ; 812-8582 ; Japan
    3. Division of Diagnostic Pathology
    ; Kyushu University Hospital ; 3-1-1 Maidashi ; Higashi-ku ; Fukuoka ; 812-8582 ; Japan
    4. Department of Immunology
    ; Shimane University Faculty of Medicine ; Izumo ; Shimane ; 693-8501 ; Japan
    5. Department of Anatomic Pathology
    ; Pathological Sciences ; Graduate School of Medical Sciences ; Kyushu University ; 3-1-1 Maidashi ; Higashi-ku ; Fukuoka ; 812-8582 ; Japan
  • 关键词:Hepatocellular carcinoma ; Cytotoxic T lymphocytes ; Programmed death ; 1 ; Human leukocyte antigens class I ; Prognosis
  • 刊名:Journal of Gastroenterology
  • 出版年:2015
  • 出版时间:January 2015
  • 年:2015
  • 卷:50
  • 期:1
  • 页码:65-75
  • 全文大小:1,740 KB
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  • 刊物类别:Medicine
  • 刊物主题:Medicine & Public Health
    Gastroenterology
    Oncology
    Surgical Oncology
    Hepatology
    Internal Medicine
    Colorectal Surgery
  • 出版者:Springer Japan
  • ISSN:1435-5922
文摘
Background Hepatocellular carcinoma (HCC) is one of the most common solid tumors worldwide. Surgery is potentially curative, but high recurrence rates worsen patient prognosis. The interaction between the proteins programmed cell death 1 (PD-1) and programmed cell death 1 ligand 1 (PD-L1) is an important immune checkpoint. The significance of PD-L1 expression and human leukocyte antigen class I (HLA class I), recognized by CD8 T cells, in the prognosis of patients with HCC remains to be determined. Methods We assessed the levels of PD-L1 and HLA class I expression on HCC samples from 80 patients who had undergone hepatectomy at our institution, and evaluated the correlations between PD-L1 and HLA class I expression and patient prognosis. Results High HLA class I expression was correlated with significantly better recurrence-free survival (RFS), but not overall survival (OS). Multivariate analysis showed that high HLA class I expression was an independent predictor of improved RFS. Low expression of PD-L1 on HCC tended to predict better OS, but the difference was not statistically significant. PD-L1 expression on HCC correlated with the number of CD163-positive macrophages and HLA class I expression with CD3-positive cell infiltration. Univariable and multivariable analyses showed that combined PD-L1 low/HLA class I high expression on HCCs was prognostic for improved OS and RFS. Conclusions PD-L1 status may be a good predictor of prognosis in HCC patients with high HLA class I expression. Novel therapies targeting the PD-L1/PD-1 pathway may improve the prognosis of patients with HCC.

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