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Published in: Journal of Cancer Research and Clinical Oncology 11/2013

01-11-2013 | Original Paper

Identification of prognostic immunophenotypic features in cancer stromal cells of high-grade neuroendocrine carcinomas of the lung

Authors: Akiko Takahashi, Genichiro Ishii, Tomonari Kinoshita, Tatsuya Yoshida, Shigeki Umemura, Tomoyuki Hishida, Kiyotaka Yoh, Seiji Niho, Koichi Goto, Hironobu Ohmatsu, Yuichiro Ohe, Kanji Nagai, Atsushi Ochiai

Published in: Journal of Cancer Research and Clinical Oncology | Issue 11/2013

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Abstract

Purpose

The immunophenotypes of cancer stromal cells have been recognized as prognostic factors of cancer. The purpose of this study was to analyze the prognostic markers of high-grade neuroendocrine carcinomas of the lung (HGNEC; both small cell carcinoma and large cell neuroendocrine carcinoma) by examining the immunophenotypes of cancer stromal cells.

Materials and methods

One hundred and fifteen patients who underwent a complete resection of HGNEC were included in this study. We examined the presence of CD204-positive tumor-associated macrophages (TAMs), Foxp3-positive regulatory T cells (Tregs), and podoplanin-positive cancer-associated fibroblasts (CAFs) to evaluate the prognostic values of these markers.

Results

The number of CD204-positive TAMs and Foxp3-positive Tregs did not influence the overall survival (OS) or the relapse-free survival (RFS) of the patients. However, patients with podoplanin-positive CAFs had a significantly better prognosis than those with podoplanin-negative CAFs [OS: p = 0.002, RFS: p = 0.002, 5-year overall survival (5YR): 74 vs. 45 %]. According to subgroup analyses, patients with podoplanin-positive CAFs displayed a better prognosis for both small cell carcinoma (OS: p = 0.046, 5YR: 74 vs. 46 %) and large cell neuroendocrine carcinoma (OS: p = 0.020, 5YR: 74 vs. 45 %). Moreover, in multivariate analyses, the podoplanin status of the CAFs was shown to be a statistically significant independent predictor of recurrence.

Conclusion

The presence of podoplanin-positive CAFs had a favorable prognostic value, suggesting that the evaluation of podoplanin expression by CAFs would lead to a novel risk classification of patients.
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Metadata
Title
Identification of prognostic immunophenotypic features in cancer stromal cells of high-grade neuroendocrine carcinomas of the lung
Authors
Akiko Takahashi
Genichiro Ishii
Tomonari Kinoshita
Tatsuya Yoshida
Shigeki Umemura
Tomoyuki Hishida
Kiyotaka Yoh
Seiji Niho
Koichi Goto
Hironobu Ohmatsu
Yuichiro Ohe
Kanji Nagai
Atsushi Ochiai
Publication date
01-11-2013
Publisher
Springer Berlin Heidelberg
Published in
Journal of Cancer Research and Clinical Oncology / Issue 11/2013
Print ISSN: 0171-5216
Electronic ISSN: 1432-1335
DOI
https://doi.org/10.1007/s00432-013-1502-5

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