Journal
ONCOLOGY
Volume 79, Issue 5-6, Pages 355-362Publisher
KARGER
DOI: 10.1159/000323486
Keywords
Gefitinib; C-reactive protein; Epidermal growth factor receptor somatic mutation; Non-small cell lung cancer
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Purpose: We examined patients with advanced nonsquamous, non-small cell lung cancer (NSCLC) to evaluate epidermal growth factor receptor (EGFR) mutation status and serum C-reactive protein (CRP) for their associations with response to gefitinib therapy and for prognostic impacts. Methods: Serum levels of CRP from 79 Japanese patients with advanced nonsquamous NSCLC were measured before the start of gefitinib. We used the peptic nucleic acid-locked nucleic acid clamp method to determine their EGFR somatic mutation status. We evaluated the relationship between each independent clinicopathological variable and the response to gefitinib therapy and the risk factors associated with prognosis. Results: Having CRP-positive serum and having wild-type EGFR were both independent negative predictive factors for the response to gefitinib treatment by multivariate logistic regression model analysis. Having CRP-positive serum and having wild-type EGFR were significant independent negative prognostic factors for survival based on multivariate analysis. Conclusions: Having CRP-positive serum predicted a lack of response to gefitinib therapy independent of EGFR mutational status. Both CRP-positive serum and wild-type EGFR were independent poor prognostic factors in patients with nonsquamous NSCLC who received gefitinib therapy. Copyright (C) 2011 S. Karger AG, Basel
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