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Journal of Environmental Pathology, Toxicology and Oncology
Facteur d'impact: 1.241 Facteur d'impact sur 5 ans: 1.349 SJR: 0.356 SNIP: 0.613 CiteScore™: 1.61

ISSN Imprimer: 0731-8898
ISSN En ligne: 2162-6537

Journal of Environmental Pathology, Toxicology and Oncology

DOI: 10.1615/JEnvironPatholToxicolOncol.v30.i4.70
pages 341-354

MET and Phosphorylated MET as Potential Biomarkers in Lung Cancer

Maria Tretiakova
University of Chicago, Department of Pathology, Chicago, Illinois
April K.S. Salama
University of Chicago, Department of Medicine, Section of Hematology/Oncology, and University of Chicago Cancer Research Center, Chicago, Illinois
Theodore Karrison
University of Chicago, Department of Health Studies, Chicago, Illinois; and "University of Chicago, Department of Surgery, Section of Cardiac and Thoracic Surgery, and University of Chicago Cancer Research Center, Chicago, Illinois
Mark K. Ferguson
Department of Surgery; University of Chicago, Chicago, IL
Aliya N. Husain
University of Chicago, Department of Pathology, Chicago, Illinois
Everett E. Vokes
University of Chicago, Department of Medicine, Section of Hematology/Oncology, and University of Chicago Cancer Research Center, Chicago, Illinois
Ravi Salgia
Department of Medical Oncology and Therapeutics Research, Comprehensive Cancer Center, City of Hope National Medical Center

RÉSUMÉ

This study aimed to investigate the expression and prognostic role of the receptor tyrosine kinase MET, phosphorylated MET, and the ligand hepatocyte growth factor (HGF) in patients with lung cancer. This retrospective study included 129 patients with non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC) with available tumor tissue and survival data. MET, pMET, and HGF expression were assessed using immunohistochemistry. MET, pMET, and HGF were more highly expressed in tumor tissue when compared to the adjacent lung parenchyma. A specific localization pattern was also evident: membranous, cytoplasmic, and nuclear patterns of expression were seen for MET, pMET, and HGF. In addition, high expression of two specific forms of phosphorylated MET−cytoplasmic expression of Y1003 and nuclear expression of Y1365−appeared to correlate with a worse overall survival (P = .016; hazard ratio [HR], 1.86; 95% confidence interval [95% CI], 1.12— 3.07; and P = .034; HR, 1.70; 95% CI, 1.04—2.78, respectively). In summary, MET, pMET, and HGF are highly expressed in both NSCLC and SCLC. Specific forms of pMET may serve as potential biomarkers in lung cancer.


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