Clinical significance of loss of Fhl1 expression in human gastric cancer

Katsuya Sakashita, Koshi Mimori, Fumiaki Tanaka, Yukio Kamohara, Hiroshi Inoue, Tetsuji Sawada, Kosei Hirakawa, Masaki Mori

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Background: Human four-and-a-half LIM domains 1 (Fhl1) gene has been reported to achieve cancer suppressive effects. The purpose of this study is to clarify clinical significance of Fhl1 expression in gastric cancer. Methods: Fhl1 mRNA expression was quantified by real-time reverse transcription (RT)-polymerase chain reaction (PCR) using paired tumor and normal clinical samples from a total of 110 gastric cancer patients. Fhl1 protein expression was investigated by immunohistochemistry. The relationship between Fhl1 mRNA expression and clinicopathological factors was statistically analyzed. Results: Fhl1 mRNA expression in tumor tissue was significantly downregulated compared with that in normal mucosa (P < 0.0001). Fhl1 protein expression was also diminished in cancer cells by immunohistochemistry. Kaplan-Meier survival curves demonstrated that the patients with low Fhl1 expression tumor showed significantly shorter survival (P < 0.05) than those with high Fhl1 expression tumor. Furthermore, the tumors with low Fhl1 expression showed deeper invasion into the serosal layer (P < 0.05) or more frequent distant metastasis (P < 0.01). Conclusion: Fhl1 gene was underexpressed in clinical gastric cancer. Loss of Fhl1 expression would be a novel biomarker to determine biological aggressiveness of gastric cancer.

Original languageEnglish
Pages (from-to)2293-2300
Number of pages8
JournalAnnals of Surgical Oncology
Volume15
Issue number8
DOIs
Publication statusPublished - Aug 2008

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oncology

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