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Published in: BMC Cancer 1/2021

Open Access 01-12-2021 | Research

A novel gene expression signature-based on B-cell proportion to predict prognosis of patients with lung adenocarcinoma

Authors: Yi Zhang, Xuewen Yin, Qi Wang, Xuming Song, Wenjie Xia, Qixing Mao, Bing Chen, Yingkuan Liang, Te Zhang, Lin Xu, Feng Jiang, Xinyu Xu, Gaochao Dong

Published in: BMC Cancer | Issue 1/2021

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Abstract

Background

This study aimed to develop a reliable immune signature based on B-cell proportion to predict the prognosis and benefit of immunotherapy in LUAD.

Methods

The proportion of immune cells in the TCGA-LUAD dataset was estimated using MCP-counter. The Least Absolute Shrinkage and Selector Operation was used to identify a prognostic signature and validated in an independent cohort. We used quantitative reverse transcription-polymerase chain reaction (qRT-PCR) data and formalin-fixed paraffin-embedded (FFPE) specimens immunohistochemistry to illustrate the correlation between prognostic signature and leukocyte migration.

Results

We found that the relative abundance of B lineage positively correlated with overall survival. Then, we identified a 13-gene risk-score prognostic signature based on B lineage abundance in the testing cohort and validated it in a cohort from the GEO dataset. This model remained strongly predictive of prognoses across clinical subgroups. Further analysis revealed that patients with a low-risk score were characterized by B-cell activation and leukocyte migration, which was also confirmed in FFPE specimens by qRT-PCR and immunohistochemistry. Finally, this immune signature was an independent prognostic factor in the composite nomogram of clinical characteristics.

Conclusions

In conclusion, the 13-gene immune signature based on B-cell proportion may serve as a powerful prognostic tool in LUAD.
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Literature
Metadata
Title
A novel gene expression signature-based on B-cell proportion to predict prognosis of patients with lung adenocarcinoma
Authors
Yi Zhang
Xuewen Yin
Qi Wang
Xuming Song
Wenjie Xia
Qixing Mao
Bing Chen
Yingkuan Liang
Te Zhang
Lin Xu
Feng Jiang
Xinyu Xu
Gaochao Dong
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2021
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-021-08805-5

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