Journal
PHARMACOGENOMICS JOURNAL
Volume 14, Issue 5, Pages 418-423Publisher
SPRINGERNATURE
DOI: 10.1038/tpj.2014.11
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In gastric cancer, available clinical studies focusing on the activated hepatocyte growth factor (HGF)/MET pathway are limited to surgical and often heterogeneous series. MET copy number gain (CNG) and an activating truncation in the HGF promoter (deoxyadenosine tract element, DATE+) were studied in tumors of 95 patients with advanced gastric cancer treated with palliative chemotherapy. Associations with overall survival (OS) and the pattern of metastatic disease were studied. Median OS was 9.7 months in 80 MET CNG <5 copies cases (MET-), and 6.4 months in 15 MET CNG was >= 5 copies cases (MET+) (P=0.001). MET+ status confirmed the adverse prognostic effect in the multivariate model. A significantly different distribution of MET+/DATE+ and MET-/DATE- cases was observed between patients with and without peritoneal carcinomatosis (PC). MET+ status confirms its adverse prognostic role in advanced gastric cancer patients. The activated MET/HGF axis seems to be associated with PC. These findings are relevant to the development of anti-MET/HGF compounds.
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