In:
PLOS ONE, Public Library of Science (PLoS), Vol. 16, No. 5 ( 2021-5-6), p. e0251080-
Abstract:
Most lung cancer patients are diagnosed at an advanced stage, limiting their treatment options with very low response rate. Lung cancer is the most common cause of cancer death worldwide. Therapies that target driver gene mutations (e.g. EGFR , ALK , ROS1 ) and checkpoint inhibitors such anti-PD-1 and PD-L1 immunotherapies are being used to treat lung cancer patients. Identification of correlations between driver mutations and PD-L1 expression will allow for the best management of patient treatment. 851 cases of non-small cell lung cancer cases were profiled for the presence of biomarkers EGFR , KRAS , BRAF , and PIK3CA mutations by SNaPshot/sizing genotyping. Immunohistochemistry was used to identify the protein expression of ALK and PD-L1. Total PD-L1 mRNA expression (from unsorted tumor samples) was quantified by RT-qPCR in a sub-group of the cohort to assess its correlation with PD-L1 protein level in tumor cells. Statistical analysis revealed correlations between the presence of the mutations, PD-L1 expression, and the pathological data. Specifically, increased PD-L1 expression was associated with wildtype EGFR and vascular invasion, and total PD-L1 mRNA levels correlated weakly with protein expression on tumor cells. These data provide insights into driver gene mutations and immune checkpoint status in relation to lung cancer subtypes and suggest that RT-qPCR is useful for assessing PD-L1 levels.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0251080
DOI:
10.1371/journal.pone.0251080.g001
DOI:
10.1371/journal.pone.0251080.g002
DOI:
10.1371/journal.pone.0251080.g003
DOI:
10.1371/journal.pone.0251080.t001
DOI:
10.1371/journal.pone.0251080.t002
DOI:
10.1371/journal.pone.0251080.t003
DOI:
10.1371/journal.pone.0251080.t004
DOI:
10.1371/journal.pone.0251080.t005
DOI:
10.1371/journal.pone.0251080.t006
DOI:
10.1371/journal.pone.0251080.s001
DOI:
10.1371/journal.pone.0251080.s002
DOI:
10.1371/journal.pone.0251080.s003
DOI:
10.1371/journal.pone.0251080.r001
DOI:
10.1371/journal.pone.0251080.r002
DOI:
10.1371/journal.pone.0251080.r003
DOI:
10.1371/journal.pone.0251080.r004
DOI:
10.1371/journal.pone.0251080.r005
DOI:
10.1371/journal.pone.0251080.r006
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2021
detail.hit.zdb_id:
2267670-3
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