Tumor c-Met expression and prognosis of advanced hepatocellular carcinoma patients treated with sorafenib
Resource
J. Clin. Oncol., 33(3),
Journal
Journal of Clinical Oncology
Pages
317
Date Issued
2015
Date
2015
Author(s)
Shao, Yu Yun
Hsiao, Chi-Huang
Lee, Ray
Puig, Oscar
Chan, Soa-Yu
Li, Yong-Shi
Hsu, Chih-Hung
Abstract
317 Background: Overexpression of c-Met signaling has been associated with development and progression of hepatocellular carcinoma (HCC). We explored the prognostic role of tumor c-Met expression in patients with advanced HCC. Methods: Patients who had received sorafenib alone as first-line therapy for advanced HCC and had available archival tumor tissues were enrolled. Expression of total c-Met was determined by immunohistochemical staining using CONFIRM anti-total c-MET (SP44) rabbit monoclonal primary antibody (Ventana) on the BenchMark ULTRA staining platform. We evaluated c-Met expression by H scores and by a clinical score as defined in the table. Results: The study enrolled 62 patients, all with Child-Pugh class A status. The HCC etiology was hepatitis B in 48 patients, and hepatitis C in 12 patents; 57 had BCLC disease; 40 had extrahepatic metastasis, and 37 had macrovascular invasion. Clinical scores of c-Met were 0 in 30 (48%) patients, 1 in 31 (50%) patients, 2 in 1 (2%) patients, and 3 in 0 patients. Patients with different clinical scores of c-Met had similar PFS (p = 0.821) or OS (p = 0.533). The median membranous H score and cytoplasmic score were 32.5 and 5, respectively. Patients with higher (≥ median) and lower c-Met membranous H scores or cytoplasmic H scores also had similar PFS and OS. Conclusions: High c-Met expression was rare in this advanced HCC cohort. Tumor expression of c-Met had no obvious associations with the prognosis of advanced HCC. (This study was supported by National Science Council, Taiwan (NSC-102-2314-B-002-120, NSC-103-2314-B-002-181-MY2, NSC-103-2314-B-002-092)). [Table: see text]
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