Abstract:
BACKGROUND:Lung carcinoma usually is advanced at the time of presentation and frequently shows metastatic spread. In recent times, prognostic factors such as c-erbB-2 in patients with breast carcinoma have provided useful information and beneficial therapeutic targets. The objective of this study was to evaluate angiogenesis, immune function, and telomerase expression in patients with nonsmall cell lung carcinoma (NSCLC) to determine their prognostic significance. METHODS:Immunohistochemistry was used to evaluate the expression of human telomerase reverse transcriptase (hTERT; n = 115 patients), interleukin-2r (IL-2r; n = 40 patients), microvessel density (MVD; n = 81 patients), and vascular endothelial growth factor (VEGF; n = 61 patients). Three-year survival follow-up information was available for most patients, and a comprehensive review of clinicopathologic features was carried out. RESULTS:Fifty percent of tumors showed nuclear staining for hTERT, 55% of tumors showed some degree of lymphocyte IL-2r expression, 33% of tumors were recorded with an MVD that was higher than average, and VEGF staining was detected in 85% of tumors. None of the parameters measured had an impact on survival. hTERT expression was correlated with lymph node status. Lymph node status and tumor size were identified as independent prognostic factors. CONCLUSIONS:This study failed to identify a marker of prognosis for patients with NSCLC other than tumor size and lymph node status in this population. Telomerase expression was associated with metastases, raising the possibility that this enzyme is involved in the metastatic process. Tumor cell VEGF expression was identified frequently: This growth factor may have potential as a target for antiangiogenic therapy. Lung carcinoma typically is the result of large numbers of mutations. Further understanding of the biologic implications of these mutations will lead to the development of effective prognostic markers and treatments for patients with NSCLC.
journal_name
Cancerjournal_title
Cancerauthors
Toomey D,Smyth G,Condron C,Kay E,Conroy R,Foley D,Hong C,Hogan B,Toner S,McCormick P,Broe P,Kelly C,Bouchier-Hayes Ddoi
10.1002/1097-0142(20011115)92:10<2648::aid-cncr161subject
Has Abstractpub_date
2001-11-15 00:00:00pages
2648-57issue
10eissn
0008-543Xissn
1097-0142pii
10.1002/1097-0142(20011115)92:10<2648::AID-CNCR161journal_volume
92pub_type
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