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

Authors
 Hee Jun Kim  ;  Sung Gwe Ahn  ;  Hak Min Lee  ;  Jong Tae Park  ;  Kyunghwa Han  ;  Seung Ah Lee  ;  Joon Jeong 
Citation
 JOURNAL OF BREAST CANCER, Vol.18(4) : 371-377, 2015 
Journal Title
 JOURNAL OF BREAST CANCER 
ISSN
 1738-6756 
Issue Date
2015
Keywords
Breast neoplasms ; Metastasis ; Prognostic factor ; Subtypes
Abstract
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.
Files in This Item:
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DOI
10.4048/jbc.2015.18.4.371
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Surgery (외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kim, Hee Jun(김희준)
Park, Jong Tae(박종태)
Ahn, Sung Gwe(안성귀) ORCID logo https://orcid.org/0000-0002-8778-9686
Lee, Hak Min(이학민)
Jeong, Joon(정준) ORCID logo https://orcid.org/0000-0003-0397-0005
Han, Kyung Hwa(한경화)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/157077
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