Prognostic Impact of Angiogenic Markers in Non¨CSmall-Cell Lung Cancer is Related to Tumor Size

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• 作者：Tom Donnem¹ ; ² ; ^{tom.donnem@uit.no} ; Sigve Andersen¹ ; ² ; Samer Al-Saad³ ; ⁴ ; Khalid Al-Shibli³ ; ⁵ ; Lill-Tove Busund³ ; ⁴ ; Roy M. Bremnes¹ ; ²
• 关键词：Angiogenesis ; NSCLC
• 刊名：Clinical Lung Cancer
• 出版年：2011
• 出版时间：March 2011
• 年：2011
• 卷：12
• 期：2
• 页码：106-115
• 全文大小：1489 K

文摘

Background

It is thought that different families of angiogenic factors stimulate angiogenesis at different stages of tumor development. Our aim was to study whether the prognostic impact of vascular endothelial growth factors (VEGFs) and receptors (VEGFRs), platelet-derived growth factors (PDGFs) and receptors (PDGFRs) and fibroblast growth factor-2 (FGF-2) were associated with tumor size in non¨Csmall-cell lung cancer (NSCLC).

Patients and Methods

Tumor tissue samples were obtained from 335 patients who had undergone resection for stage I-IIIA NSCLC, and tissue microarrays (TMAs) were constructed. Immunohistochemical techniques were used to evaluate the expression of VEGF-A, VEGF-C, VEGFR-2, VEGFR-3, PDGF-A, PDGF-B, PDGFR-¦Á, PDGFR-¦Â, and FGF-2. Tumor size was categorized using the same cutoffs as in the 7th TNM classification for lung cancer.

Results

In multivariate analysis, high VEGFR-2 (HR, 1.87, [95 % CI, 1.02-3.45]; P = .043), VEGFR-3 (HR, 2.18 [95 % CI, 1.28-3.71]; P = .004) and the combination of high VEGF-A and high VEGFR-2 expression (low/low vs. high/high; HR, 3.28 [95 % CI, 1.47-7.31]; P = .004) were independent negative prognostic factors in T2a tumors. High PDGF-B expression (HR, 11.72 [95 % CI, 3.07-44.76]; P < .001) was an independent prognostic factor in T2b tumors.

Conclusion

The prognostic impact of angiogenic factors depend in part on tumor size. VEGF-A/VEGFR-2 and VEGFR-3 seem to have their main impact in T2a tumors, while PDGF-B is a strong and independent prognostic factor in T2b tumors.