Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer.

Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer. Research Abstract Details 

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Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer. Abstract Text:

S J Kim,S Nakayama,Y Miyoshi,T Taguchi,Y Tamaki,T Matsushima,Y Torikoshi,S Tanaka,T Yoshida,H Ishihara,S Noguchi,S J Kim,S Nakayama,Y Miyoshi,T Taguchi,Y Tamaki,T Matsushima,Y Torikoshi,S Tanaka,T Yoshida,H Ishihara,S Noguchi,S J Kim,S Nakayama,Y Miyoshi,T Taguchi,Y Tamaki,T Matsushima,Y Torikoshi,S Tanaka,T Yoshida,H Ishihara,S Noguchi,

BACKGROUND: We recently established a novel assay for specific activity (SA) of cyclin-dependent kinases (CDKs) using small tumor samples (>/=8 mm(3)). The aim of this study was to investigate the prognostic significance of CDK1SA and CDK2SA in human breast cancer. METHODS: CDK1SA and CDK2SA were determined in 284 breast cancer patients and their prognostic significance was investigated. RESULTS: Tumors with high CDK1SA and high CDK2SA showed significantly poorer 5-year relapse-free survival than those with low CDK1SA and low CDK2SA, respectively (66.9% vs 84.2% for CDK1SA; 43.6% vs 83.6% for CDK2SA). Moreover, combined analysis of CDK1SA and CDK2SA enabled the classification of breast tumors into high-risk and low-risk groups, where tumors in the high-risk group were strongly associated with unfavorable prognosis (5-year relapse-free survival 69.4% for the high-risk group and 91.5% for the low-risk group). Multivariate analysis showed that the risk determined by combined analysis of CDK1SA and CDK2SA is a significant (hazard ratio 3.09, P < 0.001) prognostic indicator for relapse, especially in node-negative patients (hazard ratio 6.73, P < 0.001). CONCLUSION: Determination of CDK1SA and CDK2SA may be useful in the prediction of outcomes in breast cancer patients and has potential for use as a routine laboratory test.

Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer. Publishing Authors By Initials

SJ Kim,S Nakayama,Y Miyoshi,T Taguchi,Y Tamaki,T Matsushima,Y Torikoshi,S Tanaka,T Yoshida,H Ishihara,S Noguchi,SJ Kim,S Nakayama,Y Miyoshi,T Taguchi,Y Tamaki,T Matsushima,Y Torikoshi,S Tanaka,T Yoshida,H Ishihara,S Noguchi,SJ Kim,S Nakayama,Y Miyoshi,T Taguchi,Y Tamaki,T Matsushima,Y Torikoshi,S Tanaka,T Yoshida,H Ishihara,S Noguchi,

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Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Annals of oncology : official journal of the Europ

VOLUME: 19

Page Numbers: 68-72

Journal Abbreviation: Ann. Oncol.

ISSN: 1569-8041

DAY: 22

MONTH: 10

YEAR: 2007

Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Determination of the specific activity of CDK1 and CDK2 as a novel prognostic indicator for early breast cancer.

AFFILIATION: Department of Breast and Endocrine Surgery, Graduate School of Medicine, Osaka University, Japan.

Country: England

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MEDLINETA: Ann Oncol

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