Downregulated expression of human leukocyte antigen class I heavy chain is associated with poor prognosis in non-small-cell lung cancer.

Abstract:

:The aim of this study was to clarify the association between expression of human leukocyte antigen (HLA) class I in non-small-cell lung cancer (NSCLC) cells and patient survival. To address this, immunohistochemical staining for HLA class I was performed on specimens from 111 patients with NSCLC, and overall survival curves were compared using the log-rank test. In addition, multivariate analyses were performed using Cox's proportional hazard model. The cases were divided into 5 classes based on the expression of HLA class I heavy chain and β2-microglobulin. The overall survival rate for patients with tumors lacking HLA class I heavy chain (30 cases; 27.0%) was significantly decreased. The multivariate analysis demonstrated that the absence of HLA class I heavy chain was an independent predictor of poor prognosis. There was a trend towards an unfavorable prognosis for patients whose tumors did not express β2-microglobulin (57 cases; 51.4%). Downregulation of HLA class I heavy chain expression was significantly associated with the downregulation of β2-microglobulin. Cases lacking HLA class I heavy chain as well as β2-microglobulin expression (23 cases; 20.7%) had a statistically significant unfavorable prognosis compared with other cases. The present findings demonstrate that the lack of HLA class I heavy chain expression in tumor cells is an independent prognostic factor for poor NSCLC survival, and is likely to exert an important influence on immune surveillance in patients.

journal_name

Oncol Lett

journal_title

Oncology letters

authors

Ichinokawa K,Nakanishi Y,Hida Y,Tsuchikawa T,Kato T,Itoh T,Kaji M,Kaga K,Hirano S

doi

10.3892/ol.2019.10293

subject

Has Abstract

pub_date

2019-07-01 00:00:00

pages

117-126

issue

1

eissn

1792-1074

issn

1792-1082

pii

OL-0-0-10293

journal_volume

18

pub_type

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