Metastasis-Free Interval Is Closely Related to Tumor Characteristics and Has Prognostic Value in Breast Cancer Patients with Distant Relapse

被引:14
作者
Kim, Hee Jun [1 ]
Ahn, Sung Gwe [1 ]
Lee, Hak Min [1 ]
Park, Jong Tae [1 ]
Han, Kyunghwa [2 ]
Lee, Seung Ah [3 ]
Jeong, Joon [1 ]
机构
[1] Yonsei Univ, Coll Med, Gangnam Severance Hosp, Dept Surg,Gangnam Med Res Ctr, Seoul 06273, South Korea
[2] Yonsei Univ, Coll Med, Gangnam Severance Hosp, Biostat Collaborat Unit,Gangnam Med Res Ctr, Seoul 06273, South Korea
[3] CHA Univ, CHA Bundang Med Ctr, Dept Surg, Songnam, South Korea
关键词
Breast neoplasms; Metastasis; Prognostic factor; Subtypes; BONE METASTASES; RECURRENCE; SURVIVAL; HAZARD; CARCINOMA; MODELS; TIME;
D O I
10.4048/jbc.2015.18.4.371
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Purpose: We investigated the relationships between metastasis-free interval (MFI) and tumor characteristics, and assessed the prognostic value of MFI for survival after metastasis in patients with metastatic breast cancer. Furthermore, we compared MFI among the subtypes. Methods: We identified 335 patients with postoperative tumor recurrence at distant site(s). All patients underwent curative resection and had a MFI of at least 6 months. MFI was categorized as short (<2 years), intermediate 2 years and <5 years), or long (>= 5 years). Overall survival after metastasis (OSM) was estimated. Results: Patients with a shorter MFI were younger, more likely to have initial metastasis to visceral organs, and had a larger tumor with a higher stage and grade as well as a higher rate of nodal involvement at initial diagnosis. Among 136 patients with known disease subtypes, shorter MFI was associated with the triple-negative subtype while longer MFI was associated with the hormone receptor-positive/human epidermal growth factor receptor 2 negative subtype. Mortality after metastasis declined sharply with increasing MFI up to approximately 2 years, and continued gradually declining between 2 and 5 years. An MFI longer than 5 years did not add any survival benefit. MFI was a significant prognostic factor for OSM independent of nodal status, stage, metastatic site, and hormone receptor status of the metastasized cancer. Conclusion: MFI is closely related to biological characteristics of both primary tumors and their metastases, and has a prognostic value for survival after metastasis. We therefore suggest investigation into treatments targeting improvement of MFI as a potential novel strategy.
引用
收藏
页码:371 / 377
页数:7
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