Although NSCLC exhibits strong coexpression of TNF-alpha, TNF-beta, TNF-R1, and TNF-R2, there is a loss/down-regulation of TNF receptors in high stage tumors. TNF-R1 and TNF-R2 positivity independently predicts favorable outcome in NSCLC, particularly in tumors with no clinically distant metastasis. The current study supports a role for TNFs and their receptors in the evolution and progression of NSCLC.
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