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Published in: International Journal of Colorectal Disease 6/2003

01-11-2003 | Original Article

Prognostic significance of Bcl-2 and p53 expression in gastric cancer

Authors: Hyeon Kook Lee, Hye Seung Lee, Han-Kwang Yang, Woo Ho Kim, Kuhn Uk Lee, Kuk Jin Choe, Jin-Pok Kim

Published in: International Journal of Colorectal Disease | Issue 6/2003

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Abstract

Background and aims

Apoptosis regulates cell death and influences cell proliferation and therefore may play an important role in development or growth of various malignant tumors. The Bcl-2 and p53 are closely linked in the regulation of apoptosis. We investigated the prognostic significance of Bcl-2 and p53 expression in patients with gastric cancer.

Patients and methods

Immunohistochemistry was used to study Bcl-2 and p53 expression in 308 consecutive patients with gastric cancer.

Results

Bcl-2 expression was positive in 39 patients (12.7%) and showed a significant negative correlation with depth of invasion and lymph node metastasis. p53 expression was observed in 105 patients (34.1%) and was significantly associated with depth of invasion, lymph node metastasis, distant metastasis, and intestinal type. Patients with Bcl-2+ tumors showed a trend to better 5-year survival rate (81%) than those with Bcl-2 negative tumors (71%). The 5-year survival rate in p53 positive cases (60%) was significantly lower than that in p53-negative cases (78%). In addition, p53 expression showed a significantly poorer prognosis in both diffuse and intestinal types. In multivariate analysis restricted to patients with R0 resection p53 expression was an independent prognostic factor (relative risk: 2.063). In combined assessment of p53 and Bcl-2 expression the group with p53+/Bcl-2 tumors showed significantly worse 5-year survival (57%) than the other groups, while best survival was seen in the group with p53+/Bcl-2+ tumors (100%).

Conclusion

p53 expression is an unfavorable prognostic factor in gastric cancer. Bcl-2 expression may have possible prognostic value when combined with p53 expression.
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Metadata
Title
Prognostic significance of Bcl-2 and p53 expression in gastric cancer
Authors
Hyeon Kook Lee
Hye Seung Lee
Han-Kwang Yang
Woo Ho Kim
Kuhn Uk Lee
Kuk Jin Choe
Jin-Pok Kim
Publication date
01-11-2003
Publisher
Springer-Verlag
Published in
International Journal of Colorectal Disease / Issue 6/2003
Print ISSN: 0179-1958
Electronic ISSN: 1432-1262
DOI
https://doi.org/10.1007/s00384-003-0491-2

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