High cyclin B1 expression is associated with poor survival in breast cancer.

High cyclin B1 expression is associated with poor survival in breast cancer.
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DOI:
10.1038/sj.bjc.6604874
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发表时间:
2009-04-07
影响因子:
8.8
通讯作者:
Blomqvist, C.
Blomqvist, C.
中科院分区:
医学1区
文献类型:
--
作者:
Aaltonen, K.;Amini, R-M;Heikkila, P.;Aittomaki, K.;Tamminen, A.;Nevanlinna, H.;Blomqvist, C.

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细胞周期蛋白B1调节细胞周期的G2-M转换。Cyclin B1在乳腺癌前病变和乳腺癌中的表达高于正常乳腺组织。乳腺癌中细胞周期蛋白B1表达与其他组织病理学变量和预后作用的相关性尚不完全清楚。传统上使用的预后标准确定接受辅助化疗和暴露于不良反应的患者的大子集。需要一种可靠、简便的方法来帮助乳腺癌的预后评估。我们分析了1348例浸润性乳腺癌中细胞周期蛋白B1的表达,并研究了与其他组织病理学变量和生存率的相关性。高细胞周期蛋白B1与高肿瘤分级、大肿瘤大小和阳性淋巴结状态、雌激素和孕激素受体阴性、阳性HER 2和p53状态、诊断时年轻以及高细胞周期蛋白E、细胞周期蛋白A和Ki 67表达相关。在未接受辅助化疗的患者中,高细胞周期蛋白B1是总生存期和无转移生存期较短的强预测因子(分别为RR 3.74,P<0.0005和RR 3.51,P<0.0005),并且在多变量分析中仍然是独立的预后因素(分别为RR 1.80,P=0.04和RR 2.31,P=0.02)。本研究提示,高水平的cyclin B1与乳腺癌的侵袭性表型相关,是乳腺癌独立的预后因素。
Cyclin B1 regulates the G2-M transition of the cell cycle. Cyclin B1 expression is higher in premalignant and malignant than normal breast lesions. Correlation of cyclin B1 expression with other histopathological variables and prognostic role in breast cancer are not fully understood. Traditionally used prognostic criteria identify large subset of patients to receive adjuvant chemotherapy and to be exposed to adverse effects. A reliable and simple method helping prognostic evaluation in breast cancer is needed. We analysed cyclin B1 expression on 1348 invasive breast cancers and studied correlations with other histopathological variables and survival. High cyclin B1 correlated with high tumour grade, large tumour size and positive nodal status, oestrogen and progesterone receptor negativity, positive HER2 and p53 status, young age at diagnosis, and high cyclin E, cyclin A and Ki67 expression. Among patients not given adjuvant chemotherapy high cyclin B1 was a strong predictor of shorter overall and metastasis-free survival (RR 3.74, P<0.0005 and RR 3.51, P<0.0005, respectively), and remained as an independent prognostic factor also in multivariate analysis (RR 1.80, P=0.04 and RR 2.31, P=0.02, respectively). This study suggests high cyclin B1 associates with aggressive phenotype and is an independent prognostic factor in breast cancer.
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