Cyclooxygenase-2 Expression Is a Predictive Marker for Late Recurrence in Colorectal Canceropen access
- Authors
- Kim, Sung Hoo; Ahn, Byung kyu; Paik, Seung Sam; Lee, Kang Hong
- Issue Date
- Jun-2018
- Publisher
- HINDAWI LTD
- Citation
- GASTROENTEROLOGY RESEARCH AND PRACTICE, v.2018, pp.1 - 9
- Indexed
- SCIE
SCOPUS
- Journal Title
- GASTROENTEROLOGY RESEARCH AND PRACTICE
- Volume
- 2018
- Start Page
- 1
- End Page
- 9
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/149910
- DOI
- 10.1155/2018/7968149
- ISSN
- 1687-6121
- Abstract
- Introduction.
Cyclooxygenase-2 (COX-2) expression is elevated in colorectal cancer (CRC). However, data about the relation between COX-2 expression and the impact on the biologic behavior of recurrent disease are inconclusive as yet. The aim of this study is to investigate the relationship between the status of COX-2 expression in the primary CRC and the characteristics of recurrence after curative resection of stage I to III CRC.
Materials and Methods.
Ninety-eight patients with recurrence in 376 CRC patients, who underwent curative surgery between January 1991 and August 2001, were retrospectively assessed. Immunohistochemical staining, performed for the presence of COX-2 on tissue microarrays, was analyzed.
Results.
Forty-six patients showed elevated COX-2 expression, and 52 patients did not. The mean time to recurrence was significantly longer in the positive group than in the negative group (34.1 months ± 30.0 versus 21.9 months ± 17.4; P = 0 019). Positive COX-2 expression was correlated with late recurrence (>3 years after surgery) [43.5% versus 13.5%; P = 0 001]. In multivariate analysis, COX-2 expression was an independent factor associated with late recurrence (OR 4.656; 95% CI, 1.696 to 12.779; P = 0 003). Recurrence pattern and postrecurrence survival were not different between the two groups.
Conclusions.
Elevated COX-2 expression in itself is not a prognostic factor, but COX-2 expression in tumor tissue may be an independent predictive marker of late recurrence for patients with stage I to III CRC.
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