Prognostic value of tumor-infiltrating lymphocytes differs depending on histological type and smoking habit in completely resected non-small-cell lung cancer

T. Kinoshita, R. Muramatsu, T. Fujita, H. Nagumo, Toshiharu Sakurai, S. Noji, E. Takahata, Tomonori Yaguchi, N. Tsukamoto, Chie Kudo, Yuichiro Hayashi, Ikuo Kamiyama, Takashi Ohtsuka, H. Asamura, Yutaka Kawakami

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56 Citations (Scopus)

Abstract

PATIENTS AND METHODS: We evaluated the prognostic significance of TILs (CD4+, CD8+, CD20+, and FOXP3+) according to histological type and smoking habit using automatic immunohistochemical staining and cell counting in 218 patients with NSCLC.

BACKGROUND: T-cell infiltration in tumors has been used as a prognostic tool in non-small-cell lung cancer (NSCLC). However, the influence of smoking habit and histological type on tumor-infiltrating lymphocytes (TILs) in NSCLC remains unclear.

RESULTS: In multivariate survival analyses of clinical, pathological, and immunological factors, a high ratio of FOXP3+ to CD4+ T cells (FOXP3/CD4) [hazard ratio (HR): 4.46, P < 0.01 for overall survival (OS); HR: 1.96, P < 0.05 for recurrence-free survival (RFS)] and a low accumulation of CD20+ B cells (HR: 2.45, P = 0.09 for OS; HR: 2.86, P < 0.01 for RFS) were identified as worse prognostic factors in patients with adenocarcinoma (AD). In non-AD, a low number of CD8+ T cells were correlated with an unfavorable outcome (HR: 7.69, P < 0.01 for OS; HR: 3.57, P < 0.02 for RFS). Regarding smoking habit in AD, a high FOXP3/CD4 ratio was poorly prognostic with a smoking history (HR: 5.21, P < 0.01 for OS; HR: 2.38, P < 0.03 for RFS), whereas a low accumulation of CD20+ B cells (HR: 4.54, P = 0.03 for OS; HR: 2.94, P < 0.01 for RFS) was confirmed as an unfavorable factor in non-smokers with AD.

CONCLUSIONS: A low number of CD8+ T cells in non-AD, a high FOXP3/CD4 ratio in smokers with AD, and a low number of CD20+ B cells in non-smokers with AD were identified as independent unfavorable prognostic factors in resected NSCLC. Evaluating the influence of histological type and smoking habit on the immunological environment may lead to the establishment of immunological diagnosis and appropriate individualized immunotherapy for NSCLC.

Original languageEnglish
Pages (from-to)2117-2123
Number of pages7
JournalAnnals of oncology : official journal of the European Society for Medical Oncology
Volume27
Issue number11
Publication statusPublished - 2016 Nov 1

Keywords

  • histological type
  • non-small-cell lung cancer
  • prognostic factor
  • smoking habit
  • tumor-infiltrating lymphocytes

ASJC Scopus subject areas

  • Hematology
  • Oncology

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  • Cite this

    Kinoshita, T., Muramatsu, R., Fujita, T., Nagumo, H., Sakurai, T., Noji, S., Takahata, E., Yaguchi, T., Tsukamoto, N., Kudo, C., Hayashi, Y., Kamiyama, I., Ohtsuka, T., Asamura, H., & Kawakami, Y. (2016). Prognostic value of tumor-infiltrating lymphocytes differs depending on histological type and smoking habit in completely resected non-small-cell lung cancer. Annals of oncology : official journal of the European Society for Medical Oncology, 27(11), 2117-2123.