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Erschienen in: International Journal of Clinical Oncology 2/2013

01.04.2013 | Original Article

Clinical impact of c-Met expression and its gene amplification in hepatocellular carcinoma

verfasst von: Shunsuke Kondo, Hidenori Ojima, Hitoshi Tsuda, Jun Hashimoto, Chigusa Morizane, Masafumi Ikeda, Hideki Ueno, Kenji Tamura, Kazuaki Shimada, Yae Kanai, Takuji Okusaka

Erschienen in: International Journal of Clinical Oncology | Ausgabe 2/2013

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Abstract

Background

c-Met is an oncogene encoding a receptor for hepatocyte growth factor and, as such, plays a key role in hepatocellular carcinomas (HCC). We evaluated c-Met protein expression and its gene amplification in order to assess whether they were related to tumor recurrence and survival rates among patients who had undergone tumor resection.

Methods

We used the polymer-based method to perform an immunohistochemistry analysis of c-Met expression on 59 formalin-fixed, paraffin-embedded sections of surgical specimens. c-Met gene amplification was investigated with fluorescence in-situ hybridization. Kaplan–Meier methods and Cox proportional hazards models were used to investigate relationships between c-Met expression, patient characteristics, tumor recurrence, and survival.

Results

c-Met expression was associated with portal vein invasion (p = 0.006). Recurrence-free survival rates were significantly lower in patients with high levels of c-Met expression (p < 0.001). However, c-Met expression levels did not significantly affect overall survival rates (p = 0.12). Only 1 patient was found to have c-Met gene amplification; 22 patients were found to have aneuploidy of chromosome 7, on which the c-Met gene is located. Tumors with chromosome 7 polysomy tended to have higher levels of c-Met expression than those with chromosome 7 monosomy or disomy, but this difference was not statistically significant.

Conclusion

Although c-Met expression was not significantly associated with c-Met gene amplification, it may be a useful predictive marker of recurrence in resected HCC patients.
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Metadaten
Titel
Clinical impact of c-Met expression and its gene amplification in hepatocellular carcinoma
verfasst von
Shunsuke Kondo
Hidenori Ojima
Hitoshi Tsuda
Jun Hashimoto
Chigusa Morizane
Masafumi Ikeda
Hideki Ueno
Kenji Tamura
Kazuaki Shimada
Yae Kanai
Takuji Okusaka
Publikationsdatum
01.04.2013
Verlag
Springer Japan
Erschienen in
International Journal of Clinical Oncology / Ausgabe 2/2013
Print ISSN: 1341-9625
Elektronische ISSN: 1437-7772
DOI
https://doi.org/10.1007/s10147-011-0361-9

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