Sunday, August 31, 2014 6:05:18 PM
http://www.ncbi.nlm.nih.gov/pubmed/23384671
"CD4/CD8 co-expression shows independent prognostic impact in resected non-small cell lung cancer patients treated with adjuvant radiotherapy."
Abstract
BACKGROUND:
Though traditionally regarded as immunosuppressive, radiotherapy may also stimulate immune cells and facilitate an anti-tumor immune response. We therefore aimed to explore the prognostic significance of immune cell markers in non-small cell lung cancer (NSCLC) patients treated with postoperative radiotherapy (PORT).
METHODS:
In addition to demographic and clinicopathological information, tumor tissue samples were collected and tissue microarrays (TMAs) were constructed from 55 patients with stage I-IIIA NSCLC who received PORT. Tumor and stromal expression of CD1a+, CD3+, CD4+, CD8+, CD20+, CD56+, CD68+, CD117+ and CD138+ cells, as well as M-CSF and CSF-1R, was assessed by immunohistochemistry.
RESULTS:
In univariate analysis, high co-expression of CD4+ and CD8+ T lymphocytes as well as high expression of CD1a+ dendritic cells in the tumor stroma correlated with improved disease-specific survival (DSS). In multivariate analysis patients with stromal ?CD4/?CD8 expression had a hazard ratio of 21.1 (CI95% 3.9-115.6, P<0.001) when compared to those with ?CD4/?CD8 expression.
CONCLUSIONS:
Stromal ?CD4/?CD8 expression was an independent negative prognostic factor for survival in NSCLC patients receiving PORT, indicating a highly detrimental prognosis.
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