Oncofetal protein, IMP-3, a potential marker for prediction of postoperative peritoneal dissemination in gastric adenocarcinoma

Kaoru Okada, Yoshiyuki Fujiwara, Yurika Nakamura, Shuji Takiguchi, Kiyokazu Nakajima, Hiroshi Miyata, Makoto Yamasaki, Yukinori Kurokawa, Tsuyoshi Takahashi, Masaki Mori, Yuichiro Doki

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Background The aim of this study was to determine the expression of insulin-like growth factor-II messenger RNA (mRNA)-binding protein-3 (IMP-3) and its clinical significance in gastric cancers, as well the prognostic value of its expression in the peritoneal lavage fluid after surgery. Methods IMP-3 expression was examined by immunohistochemistry in 96 primary gastric tumors. IMP-3 mRNA expression in peritoneal lavage fluid obtained at laparotomy was determine by real-time quantitative reverse transcriptase-polymerase chain reaction (RT-PCR). Results Positive staining for IMP-3 was observed in 74% (71/96) of the tumors. IMP-3 expression in gastric tumors correlated significantly with worst overall survival (OS) and recurrence-free survival. Multivariate analyses identified pathological N stage and IMP-3 expression as significant independent prognostic factors for disease-free survival. Eight (28%) of 36 peritoneal lavage samples were cytologically negative but positive for IMP-3 mRNA expression by RT-PCR. The OS of patients with IMP-3-positive peritoneal lavage was significantly worse than of those with negative expression. Conclusions IMP-3 expression in primary gastric tumors was an independent poor prognostic factor. IMP-3 mRNA expression in peritoneal lavage fluid was a predictor of recurrence after surgery in gastric cancer and a marker of poor prognosis.

Original languageEnglish
Pages (from-to)780-785
Number of pages6
JournalJournal of Surgical Oncology
Volume105
Issue number8
DOIs
Publication statusPublished - Jun 15 2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Surgery
  • Oncology

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