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Published in: Cancer Immunology, Immunotherapy 4/2014

01-04-2014 | Original Article

PD-1+ immune cell infiltration inversely correlates with survival of operable breast cancer patients

Authors: Shenyou Sun, Xiaochun Fei, Yan Mao, Xiumin Wang, David H. Garfield, Ou Huang, Jinglong Wang, Fei Yuan, Long Sun, Qixiang Yu, Xiaolong Jin, Jianhua Wang, Kunwei Shen

Published in: Cancer Immunology, Immunotherapy | Issue 4/2014

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Abstract

The programmed death-1 (PD-1) molecule is mainly expressed on functionally “exhausted” CD8+ T cells, dampening the host antitumor immune response. We evaluated the ratio between effective and regulatory T cells (Tregs) and PD-1 expression as a prognostic factor for operable breast cancer patients. A series of 218 newly diagnosed invasive breast cancer patients who had undergone primary surgery at Ruijin Hospital were identified. The influence of CD8+ cytotoxic T lymphocytes, FOXP3+ (Treg cell marker), and PD-1+ immune cell counts on prognosis was analyzed utilizing immunohistochemistry. Both PD-1+ immune cells and FOXP3+ Tregs counts were significantly associated with unfavorable prognostic factors. In bivariate, but not multivariate analysis, high tumor infiltrating PD-1+ cell counts correlated with significantly shorter patient survival. Our results suggest a prognostic value of the PD-1+ immune cell population in such breast cancer patients. Targeting the PD-1 pathway may be a feasible approach to treating patients with breast cancer.
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Metadata
Title
PD-1+ immune cell infiltration inversely correlates with survival of operable breast cancer patients
Authors
Shenyou Sun
Xiaochun Fei
Yan Mao
Xiumin Wang
David H. Garfield
Ou Huang
Jinglong Wang
Fei Yuan
Long Sun
Qixiang Yu
Xiaolong Jin
Jianhua Wang
Kunwei Shen
Publication date
01-04-2014
Publisher
Springer Berlin Heidelberg
Published in
Cancer Immunology, Immunotherapy / Issue 4/2014
Print ISSN: 0340-7004
Electronic ISSN: 1432-0851
DOI
https://doi.org/10.1007/s00262-014-1519-x

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