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Caspase-3 activity, response to chemotherapy and clinical outcome in patients with colon cancer

AuthorsOca, Javier de; Azuara, Daniel; Sánchez-Santos, Raquel; Navarro, Matilde; Capellá, Gabriel; Moreno, Víctor; Solà, Anna M. CSIC ORCID CVN; Hotter, Georgina CSIC ORCID ; Biondo, Sebastiano; Osorio, Alfonso; Martí-Ragué, Juan; Rafecas, Antonio
Colorectal cancer
Adjuvant chemotherapy
Issue Date4-Sep-2007
CitationInternational Journal of Colorectal Disease 23(1): 21-27 (2008)
AbstractBackground and aims: The prognostic value of the degree of apoptosis in colorectal cancer is controversial. This study evaluates the putative clinical usefulness of measuring caspase-3 activity as a prognostic factor in colonic cancer patients receiving 5-fluoracil adjuvant chemotherapy. Materials and methods: We evaluated caspase-3-like protease activity in tumours and in normal colon tissue. Specimens were studied from 54 patients. These patients had either stage III cancer (Dukes stage C) or high-risk stage II cancer (Dukes stage B2 with invasion of adjacent organs, lymphatic or vascular infiltration or carcinoembryonic antigen [CEA]>5). Median follow-up was 73 months. Univariate analysis was performed previously to explore the relation of different variables (age, sex, preoperative CEA, tumour size, Dukes stage, vascular invasion, lymphatic invasion, caspase-3 activity in tumour and caspase-3 activity in normal mucosa) as prognostic factors of tumour recurrence after chemotherapy treatment. Subsequently, a multivariate Cox regression model was performed. Results: Median values of caspase-3 activity in tumours were more than twice those in normal mucosa (88.1 vs 40.6 U, p=0.001), showing a statistically significant correlation (r=0.34). Significant prognostic factors of recurrence in multivariate analysis were: male sex (odds ratio, OR=3.53 [1.13-10.90], p=0.02), age (OR=1.09 [1.01-1.18], p=0.03), Dukes stage (OR=1.93 [1.01-3.70]), caspase-3 activity in normal mucosa (OR=1.02 [1.01-1.04], p=0.017) and caspase-3 activity in tumour (OR=1.02 [1.01-1.03], p=0.013). Conclusion: Low caspase-3 activity in the normalmucosa and tumour are independent prognostic factors of tumour recurrence in patients receiving adjuvant 5-fluoracil-based treatment in colon cancer, correlating with poor disease-free survival and higher recurrence rate. © Springer-Verlag 2007.
Publisher version (URL)http://dx.doi.org/10.1007/s00384-007-0362-3
Identifiersdoi: 10.1007/s00384-007-0362-3
issn: 0179-1958
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