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Optimal radiation dose for patients with one to three lymph node positive breast cancer following breast-conserving surgery and anthracycline plus taxane-based chemotherapy: A retrospective multicenter analysis (KROG 1418)
- Title
- Optimal radiation dose for patients with one to three lymph node positive breast cancer following breast-conserving surgery and anthracycline plus taxane-based chemotherapy: A retrospective multicenter analysis (KROG 1418)
- Authors
- Kim, Haeyoung; Park, Won; Yu, Jeong Il; Choi, Doo Ho; Huh, Seung Jae; Kim, Yeon-Joo; Lee, Eun Sook; Lee, Keun Seok; Kang, Han-Sung; Park, In Hae; Shin, Kyung Hwan; Kim, Kyubo; Park, Kyung Ran; Kim, Yong Bae; Ahn, Sung Ja; Lee, Jong Hoon; Kim, Jin Hee; Chun, Mison; Lee, Hyung-Sik; Kim, Jung Soo; Lee, Jong-Young
- Ewha Authors
- 김규보; 박경란
- SCOPUS Author ID
- 김규보; 박경란
- Issue Date
- 2017
- Journal Title
- ONCOTARGET
- ISSN
- 1949-2553
- Citation
- ONCOTARGET vol. 8, no. 1, pp. 1796 - 1804
- Keywords
- breast neoplasms; radiotherapy; dose-response relationship; prognosis
- Publisher
- IMPACT JOURNALS LLC
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- Background and Purpose: This study was performed to determine optimal radiation dose in pN1 breast cancer patients who received breast conserving surgery (BCS) and anthracycline plus taxane (AT)-based chemotherapy. Materials and Methods: Retrospective chart reviews were performed in 1,147 patients who were treated between January 2006 and December 2010. The impact of radiation dose on treatment outcomes was evaluated. Results: Median follow-up time was 66 months. The 5-year rate of disease-free survival (DFS) was 93.2%. Larger tumor size (> 20 mm), positive lymphovascular invasion, high histologic grade, and high ratio of positive nodes (> 0.1) were significantly associated with inferior DFS. By using the 4 factors related to DFS, patients were categorized into high-risk (with >= 3 factors) and low-risk (with < 3 factors) groups. In the high-risk group, higher radiation dose (> 60.3 Gy(EQD2)) was significantly associated with better DFS than the lower dose (<= 60.3 Gy(EQD2)). However, the radiation dose did not impact DFS in the low-risk group. Conclusions: Dosing of radiation affects the outcome of post-BCS radiotherapy in pN1 breast cancer. Doses of over 60.3 Gy(EQD2) were associated with better outcome in the high-risk patients.
- DOI
- 10.18632/oncotarget.12882
- Appears in Collections:
- 의과대학 > 의학과 > Journal papers
- Files in This Item:
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