Serum tartrate-resistant acid phosphatase 5b activity as a prognostic marker of survival in breast cancer with bone metastasis

Yi Ying Wu, Anthony J. Janckila, Chih Hung Ku, Cheng Ping Yu, Jyh Cherng Yu, Su Hui Lee, Hsin Yi Liu, Lung T. Yam, Tsu Yi Chao

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21 引文 斯高帕斯(Scopus)

摘要

Background: Serum tartrate-resistant acid phosphatase 5b (TRACP 5b) activity is a marker of osteoclast number and is elevated in breast cancer (BC) patients with extensive bone metastasis, which might in turn reflect the tumour burden. We tested the hypothesis that baseline serum TRACP 5b activity and its interval change are potential prognostic markers of survival in BC patients with bone metastasis.Methods: We analyzed the data from previous prospective studies. A total of 100 patients with newly diagnosed bone metastasis were included. Cox proportional regression model was used to evaluate the correlation between the overall survival time (OS) and baseline serum TRACP 5b activity and its interval changes. The least significant change (LSC) of TRACP 5b was calculated from data obtained from 15 patients with early BC.Results: Estrogen receptor status (Hazard Ratio (HR) = 0.397; p = 0.003) and visceral metastasis (HR = 0.492; p = 0.0045) were significantly correlated with OS. The OS was significantly shorter in those patients with higher baseline TRACP 5b activity based on a cut-off value to delineate the highest tertile (HR = 3.524; p <0.0001). Further analysis demonstrated that among patients in the highest tertile, OS was significantly longer in those patients who had achieved a decrease of serum TRACP 5b activity greater than the LSC (38.59%) (p = 0.0015).Conclusions: We found that TRACP 5b activity and its interval change after treatment bore a prognostic role in BC patients with bone metastasis and a high baseline serum TRACP 5b activity. Further prospective phase II study is necessary to confirm these results.
原文英語
文章編號158
期刊BMC Cancer
10
DOIs
出版狀態已發佈 - 四月 23 2010
對外發佈Yes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research
  • Genetics

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