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Erschienen in: Annals of Surgical Oncology 2/2008

01.02.2008 | Hepatic and Pancreatic Tumors

Prognostic Significance of the Immediate Early Response Gene X-1 (IEX-1) Expression in Pancreatic Cancer

verfasst von: Tetsuro Sasada, MD, PhD, Koichi Azuma, MD, PhD, Tatsuya Hirai, Hiroki Hashida, MD, PhD, Michiyuki Kanai, MD, PhD, Takashi Yanagawa, PhD, Arimichi Takabayashi, MD, PhD

Erschienen in: Annals of Surgical Oncology | Ausgabe 2/2008

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Abstract

Background

The immediate early response gene X-1 (IEX-1) is a stress-inducible protein that is involved in the regulation of cell proliferation and apoptosis. The aim of this study was to evaluate the prognostic significance of IEX-1 expression in pancreatic cancer.

Methods

IEX-1 protein expression was examined on paraffin-embedded specimens from 78 patients with pancreatic ductal adenocarcinoma using immunohistochemistry. The relationships between the IEX-1 expression and other clinicopathological parameters and patient survival were evaluated. A similar analysis was conducted in a subgroup of 48 patients, who underwent a macroscopically curative resection with detailed information on the pathological findings.

Results

Among 78 pancreatic cancer patients, 41 patients (53%) were positive for IEX-1 staining. In a multivariate analysis, curative operation (P < .001), pathological stage I–III (P = .001), and positive IEX-1 expression (P = .002) were significantly favorable factors for survival. In a subgroup of 48 patients undergoing a macroscopically curative surgery, IEX-1 expression was positive in 28 patients (58%). A significant negative correlation was observed between the IEX-1 expression and serosal (P = .032) or arterial (P = .040) invasion of tumors. A multivariate analysis demonstrated limited local invasion (pT1-3, P = .021), negative lymph node involvement (pN0, P < .001), and positive IEX-1 expression (P = .004) to be significantly favorable factors for survival.

Conclusions

The positive IEX-1 expression in tumor tissues may be associated with a better prognosis in pancreatic cancer. An immunohistochemical assessment of IEX-1 expression may therefore be helpful for predicting patient prognosis in this disease.
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Metadaten
Titel
Prognostic Significance of the Immediate Early Response Gene X-1 (IEX-1) Expression in Pancreatic Cancer
verfasst von
Tetsuro Sasada, MD, PhD
Koichi Azuma, MD, PhD
Tatsuya Hirai
Hiroki Hashida, MD, PhD
Michiyuki Kanai, MD, PhD
Takashi Yanagawa, PhD
Arimichi Takabayashi, MD, PhD
Publikationsdatum
01.02.2008
Verlag
Springer-Verlag
Erschienen in
Annals of Surgical Oncology / Ausgabe 2/2008
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-007-9669-0

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