Volume 119, Issue 8 pp. 1897-1901
Early Detection and Diagnosis

Prognostic significance of cyclin A in gastric cancer

Johanna Mrena

Johanna Mrena

Department of Surgery, Helsinki University Central Hospital, Helsinki, Finland

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Jan-Patrik Wiksten

Jan-Patrik Wiksten

Department of Surgery, Helsinki University Central Hospital, Helsinki, Finland

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Arto Kokkola

Arto Kokkola

Department of Surgery, Helsinki University Central Hospital, Helsinki, Finland

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Stig Nordling

Stig Nordling

Department of Pathology, Helsinki University Central Hospital, Helsinki, Finland

Haartman Institute, University of Helsinki, Helsinki, Finland

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Caj Haglund

Corresponding Author

Caj Haglund

Department of Surgery, Helsinki University Central Hospital, Helsinki, Finland

Department of Pathology, Helsinki University Central Hospital, Helsinki, Finland

Fax: 1358-9-471-71403

Department of Surgery, Helsinki University Central Hospital, P.O. Box 340, 00029 HUS, Helsinki, FinlandSearch for more papers by this author
Ari Ristimäki

Ari Ristimäki

Department of Pathology, Helsinki University Central Hospital, Helsinki, Finland

Molecular and Cancer Biology Research Program, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland

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First published: 17 May 2006
Citations: 40

There are no relationships resulting in an actual, potential or apparent conflict of interest with regard to this manuscript.

Abstract

High level of cyclin A promotes carcinogenesis, and overexpression of cyclin A has been associated with poor prognosis of cancer patients. We validated the prognostic role of cyclin A in gastric cancer and evaluated its correlation with expression of an mRNA stability factor HuR. From 342 consecutive histologically confirmed gastric cancer patients were obtained 325 representative tissue specimens for cyclin A and 316 for HuR immunohistochemistry. Specimens were stained by cyclin A and HuR specific monoclonal antibodies. Nuclear immunostaining detected in ≥≥≥≥5% of the tumor cells was considered the cut-off for cyclin A positivity. Positive HuR immunoreactivity was scored as nuclear or cytoplasmic. Associations between scores, clinicopathological factors and survival were calculated by the χ2-test, Fisher's exact test, Kaplan-Meier test and Cox model. Cyclin A detected in the nuclei of cancer cells was positive in 55% (179 of 325) of the specimens; 40% (127 of 316) of the specimens had cytoplasmic and 88% (279of 316) nuclear immunoreactivity of HuR. Cyclin A expression was an independent prognostic factor for poor survival. Cyclin A immunoreactivity was associated with old age, high stage, proximal location of the tumor, intestinal type, noncurative resection, advanced penetration depth and with nodal metastases but not distant metastases. Furthermore, cyclin A expression was associated with cytoplasmic HuR expression, whereas no association with nuclear HuR was evident. Cyclin A is an independent prognostic factor in gastric cancer, and one mechanism for its overexpression may depend on cytoplasmic localization of HuR. © 2006 Wiley-Liss, Inc.

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