Altered status of programmed death-ligand 1 after recurrence in resected lung adenocarcinoma patients.

Abstract:

PURPOSE:Programmed death-ligand 1 (PD-L1) is found to be overexpressed in non-small cell lung cancer. The present study intended to evaluate the status of PD-L1 expression in patients with resection and recurrent lung adenocarcinoma. PATIENTS AND METHODS:Matched resection and recurrent tumor samples were harvested from 65 lung adenocarcinoma patients. Immunohistochemistry was used to evaluate the status of PD-L1 expression. Kaplan-Meier method was used for survival analysis. RESULTS:A total of 65 patients of lung adenocarcinoma were enrolled. They underwent complete resection and had recurrence after adjuvant treatment. PD-L1 expression was identified in 43.1% (28/65) of resection samples vs 55.4% (36/65) of recurrent samples. Ten patients shifted from negative to positive, whereas another two samples showed the opposite. Patients with PD-L1 expression showed worse disease-free survival than the PD-L1-negative counterparts. The expression of PD-L1 in recurrent samples was a significant favorable factor for epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) (11.2 vs 8.2 months, P=0.030). CONCLUSION:The status of PD-L1 expression may alter between resection and recurrent samples. Also, the status of PD-L1 expression after recurrence is a better prognostic factor for EGFR-TKIs.

journal_name

Onco Targets Ther

journal_title

OncoTargets and therapy

authors

Chen J,Li H,Pang R,Huang J

doi

10.2147/OTT.S127498

subject

Has Abstract

pub_date

2017-04-06 00:00:00

pages

2003-2007

issn

1178-6930

pii

ott-10-2003

journal_volume

10

pub_type

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