Large cell neuroendocrine lung carcinoma induces peripheral T-cell repertoire alterations with predictive and prognostic significance

•Blood T-cell repertoire alterations and lymphopenia are common in LCNEC patients.•Pretreatment spectratype alterations correlate positively with blood lymphocyte counts.•Both parameters confer better response to treatment and longer survival in LCNEC.•Partial restoration of T-cell repertoire with t...

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Veröffentlicht in:Lung cancer (Amsterdam, Netherlands) Netherlands), 2018-05, Vol.119, p.48-55
Hauptverfasser: Christopoulos, Petros, Schneider, Marc A., Bozorgmehr, Farastuk, Kuon, Jonas, Engel-Riedel, Walburga, Kollmeier, Jens, Baum, Volker, Muley, Thomas, Schnabel, Philipp A., Bischoff, Helge, Grohé, Christian, Serke, Monika, Thomas, Michael, Fisch, Paul, Meister, Michael
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container_title Lung cancer (Amsterdam, Netherlands)
container_volume 119
creator Christopoulos, Petros
Schneider, Marc A.
Bozorgmehr, Farastuk
Kuon, Jonas
Engel-Riedel, Walburga
Kollmeier, Jens
Baum, Volker
Muley, Thomas
Schnabel, Philipp A.
Bischoff, Helge
Grohé, Christian
Serke, Monika
Thomas, Michael
Fisch, Paul
Meister, Michael
description •Blood T-cell repertoire alterations and lymphopenia are common in LCNEC patients.•Pretreatment spectratype alterations correlate positively with blood lymphocyte counts.•Both parameters confer better response to treatment and longer survival in LCNEC.•Partial restoration of T-cell repertoire with therapy also predicts longer survival. This study was performed to evaluate for a potentially important role of T cells in the pathophysiology and treatment sensitivity of large cell neuroendocrine lung carcinoma (LCNEC), an orphan disease with poor prognosis and scarce data to guide novel therapeutic strategies. We performed T-cell receptor (TCR) β-chain spectratyping on blood samples of patients treated within the CRAD001KDE37 trial (n = 35) using age-matched current or former (n = 11) and never smokers (n = 10) as controls. The data were analyzed in conjunction with the complete blood counts of the probands as well as the data about response to treatment and overall survival in the clinical trial. Untreated stage IV LCNEC patients had significant T-cell repertoire alterations (p 
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This study was performed to evaluate for a potentially important role of T cells in the pathophysiology and treatment sensitivity of large cell neuroendocrine lung carcinoma (LCNEC), an orphan disease with poor prognosis and scarce data to guide novel therapeutic strategies. We performed T-cell receptor (TCR) β-chain spectratyping on blood samples of patients treated within the CRAD001KDE37 trial (n = 35) using age-matched current or former (n = 11) and never smokers (n = 10) as controls. The data were analyzed in conjunction with the complete blood counts of the probands as well as the data about response to treatment and overall survival in the clinical trial. Untreated stage IV LCNEC patients had significant T-cell repertoire alterations (p &lt; 0.001) compared to age-matched smokers. These changes correlated positively with blood lymphocyte counts (r = 0.49, p &lt; 0.01), suggesting antigen-induced T-cell proliferation as the causative mechanism. At the same time, LCNEC patients showed mild lymphopenia (1.54 vs. 2.51/nl in median, p &lt; 0.01), which reveals a second, antigen-independent mechanism of systemic immune dysregulation. More pronounced T-cell repertoire alterations and higher blood lymphocyte counts at diagnosis were associated with a better treatment response by RECIST and with a longer overall survival (441 vs. 157 days in median, p = 0.019). A higher degree of T-cell repertoire normalization after 3 months of therapy also distinguished a patient group with more favourable prognosis (median overall survival 617 vs. 316 days, p = 0.036) independent of radiological response. Thus, LCNEC induces clinically relevant changes of the T-cell repertoire, which are measurable in the blood and could be exploited for prognostic, predictive and therapeutic purposes. Their pathogenesis appears to involve antigen-induced oligoclonal T-cell expansions superimposed on TCR-independent lymphopenia.</description><identifier>ISSN: 0169-5002</identifier><identifier>EISSN: 1872-8332</identifier><identifier>DOI: 10.1016/j.lungcan.2018.03.002</identifier><identifier>PMID: 29656752</identifier><language>eng</language><publisher>Ireland: Elsevier B.V</publisher><subject>Aged ; Carcinoma, Large Cell - diagnosis ; Carcinoma, Large Cell - immunology ; Carcinoma, Large Cell - mortality ; Carcinoma, Neuroendocrine - diagnosis ; Carcinoma, Neuroendocrine - immunology ; Carcinoma, Neuroendocrine - mortality ; Female ; Genes, T-Cell Receptor beta - genetics ; Humans ; Immune status ; Large cell neuroendocrine lung carcinoma ; Lung Neoplasms - diagnosis ; Lung Neoplasms - immunology ; Lung Neoplasms - mortality ; Lymphopenia ; Male ; Middle Aged ; Neoplasm Staging ; Predictive Value of Tests ; Prognosis ; Spectratyping ; Survival Analysis ; T-cell repertoire ; T-Lymphocytes - physiology</subject><ispartof>Lung cancer (Amsterdam, Netherlands), 2018-05, Vol.119, p.48-55</ispartof><rights>2018 Elsevier B.V.</rights><rights>Copyright © 2018 Elsevier B.V. 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This study was performed to evaluate for a potentially important role of T cells in the pathophysiology and treatment sensitivity of large cell neuroendocrine lung carcinoma (LCNEC), an orphan disease with poor prognosis and scarce data to guide novel therapeutic strategies. We performed T-cell receptor (TCR) β-chain spectratyping on blood samples of patients treated within the CRAD001KDE37 trial (n = 35) using age-matched current or former (n = 11) and never smokers (n = 10) as controls. The data were analyzed in conjunction with the complete blood counts of the probands as well as the data about response to treatment and overall survival in the clinical trial. Untreated stage IV LCNEC patients had significant T-cell repertoire alterations (p &lt; 0.001) compared to age-matched smokers. These changes correlated positively with blood lymphocyte counts (r = 0.49, p &lt; 0.01), suggesting antigen-induced T-cell proliferation as the causative mechanism. 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This study was performed to evaluate for a potentially important role of T cells in the pathophysiology and treatment sensitivity of large cell neuroendocrine lung carcinoma (LCNEC), an orphan disease with poor prognosis and scarce data to guide novel therapeutic strategies. We performed T-cell receptor (TCR) β-chain spectratyping on blood samples of patients treated within the CRAD001KDE37 trial (n = 35) using age-matched current or former (n = 11) and never smokers (n = 10) as controls. The data were analyzed in conjunction with the complete blood counts of the probands as well as the data about response to treatment and overall survival in the clinical trial. Untreated stage IV LCNEC patients had significant T-cell repertoire alterations (p &lt; 0.001) compared to age-matched smokers. These changes correlated positively with blood lymphocyte counts (r = 0.49, p &lt; 0.01), suggesting antigen-induced T-cell proliferation as the causative mechanism. At the same time, LCNEC patients showed mild lymphopenia (1.54 vs. 2.51/nl in median, p &lt; 0.01), which reveals a second, antigen-independent mechanism of systemic immune dysregulation. More pronounced T-cell repertoire alterations and higher blood lymphocyte counts at diagnosis were associated with a better treatment response by RECIST and with a longer overall survival (441 vs. 157 days in median, p = 0.019). A higher degree of T-cell repertoire normalization after 3 months of therapy also distinguished a patient group with more favourable prognosis (median overall survival 617 vs. 316 days, p = 0.036) independent of radiological response. Thus, LCNEC induces clinically relevant changes of the T-cell repertoire, which are measurable in the blood and could be exploited for prognostic, predictive and therapeutic purposes. Their pathogenesis appears to involve antigen-induced oligoclonal T-cell expansions superimposed on TCR-independent lymphopenia.</abstract><cop>Ireland</cop><pub>Elsevier B.V</pub><pmid>29656752</pmid><doi>10.1016/j.lungcan.2018.03.002</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-7966-8980</orcidid></addata></record>
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subjects Aged
Carcinoma, Large Cell - diagnosis
Carcinoma, Large Cell - immunology
Carcinoma, Large Cell - mortality
Carcinoma, Neuroendocrine - diagnosis
Carcinoma, Neuroendocrine - immunology
Carcinoma, Neuroendocrine - mortality
Female
Genes, T-Cell Receptor beta - genetics
Humans
Immune status
Large cell neuroendocrine lung carcinoma
Lung Neoplasms - diagnosis
Lung Neoplasms - immunology
Lung Neoplasms - mortality
Lymphopenia
Male
Middle Aged
Neoplasm Staging
Predictive Value of Tests
Prognosis
Spectratyping
Survival Analysis
T-cell repertoire
T-Lymphocytes - physiology
title Large cell neuroendocrine lung carcinoma induces peripheral T-cell repertoire alterations with predictive and prognostic significance
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