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Post-relapse survival in patients with the early and late distant recurrence in estrogen receptor-positive HER2-negative breast cancer
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Creator |
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Collaborative Study Group of Scientific Research of the Japanese Breast Cancer Society
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Accessrights |
open access |
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The final publication is available at link.springer.com
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Subject |
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Breast cancer
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Post-relapse survival
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Prognosis
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Estrogen receptor-positive
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Endocrine therapy
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NDC
490
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Description |
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Abstract
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Background: Few studies have been performed on post-relapse survival in patients with the early and late distant recurrence in estrogen receptor (ER)-positive, HER2-negative breast cancer. Methods: A total of 205 patients with the early distant recurrence and 134 patients with the late distant recurrence of ER-positive, HER2-negative breast cancer who had undergone breast surgery or neoadjuvant chemotherapy between January 2000 and December 2004 were registered from nine institutions. Prognostic factors for post-relapse survival in patients with the early and late recurrence were analyzed. Results: Post-relapse survival was significantly longer in patients with the late recurrence than in patients with the early recurrence. Predictive factors for post-relapse survival in patients with the early recurrence were lack of adjuvant chemotherapy, a long disease-free interval, and long durations of endocrine therapies and chemotherapies after relapse. In patients with the late recurrence, post-relapse survival was significantly improved for those individuals with one metastatic organ at relapse and individuals who were treated with the first-line and subsequent endocrine therapies for prolonged periods. Moreover, ER expression in primary breast tumors of late recurrence patients was significantly higher with a duration of the first-line endocrine therapy >6 months than in those with a duration ≤6 months. Conclusion: Predictors for prognosis after relapse differed between patients with the early and late distant recurrence. Endocrine responsiveness after relapse is a key factor for improved post-relapse survival, and it is thus important to establish whether metastatic tumors are endocrine-resistant in ER-positive, HER2-negative recurrent breast cancer.
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Springer
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Resource Type |
journal article |
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Identifier |
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http://hdl.handle.net/2115/70047
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DOI
https://doi.org/10.1007/s12282-016-0730-3
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PMID
27628678
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Journal |
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Breast cancer
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Volume Number24
Issue Number3
Page Start473
Page End482
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Oaidate |
2023-07-26 |