Publication Detail

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Serum vascular endothelial growth factor and COX-2/5-LOX inhibition in advanced non-small cell lung cancer: Cancer and Leukemia Group B 150304.

Martin J Edelman; Lydia Hodgson; Xiaofei Wang; Robert Christenson; Scott Jewell; Everett Vokes; Robert Kratzke (Profiled Authors: Martin J Edelman; Robert H Christenson)

University of Maryland Greenebaum Cancer Center, Baltimore, Maryland 21201, USA. medelman@umm.edu
Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer 2011;6(11):1902-6.

INTRODUCTION: Eicosanoids, including PGE-2 and 5-HETE, can increase levels of plasma vascular endothelial growth factor (VEGF). Overexpression of COX-2 or 5-LOX increases levels of PGE-2 and 5-HETE, respectively. Elevated levels of VEGF are common in patients with non-small cell lung cancer (NSCLC). We prospectively measured VEGF in serum collected from patients enrolled in Cancer and Leukemia Group B 30203, a randomized phase II study of eicosanoid modulation in addition to chemotherapy in patients with advanced NSCLC, to determine whether these levels had prognostic significance and whether they correlated with COX-2 expression and/or responded to inhibition of COX-2 or 5-LOX. METHODS: Pre- and post-treatment serum was collected from patients enrolled in CALGB 30203. Serum VEGF levels were determined using enzyme-linked immunosorbent assay methodology. Statistical analyses were performed to determine the correlation between pretreatment serum VEGF levels and time of overall survival. Pretreatment formalin fixed tissue was stained for 5-LOX and COX-2 by immunohistochemistry. RESULTS: The median baseline VEGF level was 502 pg/ml (range, 55-3453 pg/ml). Dichotomized serum VEGF levels at median inversely correlated with survival time (p = 0.008), as did VEGF levels as a continuous variable in multivariate analysis (p = 0.035). VEGF levels were significantly correlated neither with baseline COX-2 expression (Pearson r = 0.1524, p = 0.271) nor with 5-LOX expression. Treatment with COX-2 or 5-LOX inhibitors did not alter the levels. CONCLUSION: These data indicate that elevated serum VEGF is a negative prognostic variable in NSCLC. VEGF levels are neither correlated with baseline tumor COX-2 expression nor do they respond to COX-2 and/or 5-LOX inhibition plus chemotherapy.

1 Originating Grant

• 1.

  Edelman, Martin

  CANCER AND LEUKEMIA GROUP B

  1 April 1982 - 31 March 2003

  NATIONAL CANCER INSTITUTE

Scientific Context

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