Abstract
Gastric cancers producing α-fetoprotein (AFP) have a poor prognosis and a high incidence of liver metastasis. Hepatocyte growth factor (HGF) and its receptor, c-Met, are known to induce mitosis and cell movement and to promote tumor progression. In the present study, c-Met and HGF expression in AFP-producing gastric cancer was compared with those gastric cancers that do not produce AFP. Twenty-six patients with AFP-producing gastric cancers [AFP(+)] and 26 patients stage-matched gastric cancers without AFP production [AFP(–)] were evaluated for c-Met and HGF expression and proliferating cell nuclear antigen-labelling index using immunohistochemical analysis. A higher frequency of c-Met expression was observed in the AFP(+) group than in the AFP(–) group (p < 0.01). A higher expression of c-Met might be one explanation for the poorer prognosis of AFP-producing gastric cancers.
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