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Prognostic Impact of Elective Supraclavicular Nodal Irradiation for Patients with N1 Breast Cancer after Lumpectomy and Anthracycline Plus Taxane-Based Chemotherapy (KROG 1418): A Multicenter Case-Controlled Study
- Prognostic Impact of Elective Supraclavicular Nodal Irradiation for Patients with N1 Breast Cancer after Lumpectomy and Anthracycline Plus Taxane-Based Chemotherapy (KROG 1418): A Multicenter Case-Controlled Study
- 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; Wee, Chan Woo; 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; Cha, Jihye
- Ewha Authors
- 김규보; 박경란
- SCOPUS Author ID
- 김규보; 박경란
- Issue Date
- Journal Title
- CANCER RESEARCH AND TREATMENT
- 1598-2998; 2005-9256
- vol. 49, no. 4, pp. 970 - 980
- Breast neoplasms; Adjuvant radiotherapy; Lymphatic irradiation; Taxane; Case-control studies
- KOREAN CANCER ASSOCIATION
- SCIE; SCOPUS; KCI
- Purpose This study was conducted to evaluate the impact of supraclavicular lymph node radiotherapy (SCNRT) on N1 breast cancer patients receiving post-lumpectomy whole-breast irradiation (WBI) and anthracycline plus taxane-based (AT) chemotherapy. Materials and Methods We performed a case-control analysis to compare the outcomes of WBI and WBI plus SCNRT (WBI+SCNRT). Among 1,147 patients with N1 breast cancer who received post-lumpectomy radiotherapy and AT-based chemotherapy in 12 hospitals, 542 were selected after propensity score matching. Patterns of failure, disease-free survival (DFS), distant metastasis-free survival (DMFS), and treatment-related toxicity were compared between groups. Results A total of 41 patients (7.6%) were found to have recurrence. Supraclavicular lymph node (SCN) failure was detected in three patients, two in WBI and one in WBI+ SCNRT. All SCN failures were found simultaneously with distant metastasis. There was no significant difference in patterns of failure or survival between groups. The 5-year DFS and DMFS for patients with WBI and WBI+SCNRT were 94.4% versus 92.6% (p=0.50) and 95.1% versus 94.5% (p=0.99), respectively. The rates of lymphedema and radiation pneumonitis were significantly higher in the WBI+SCNRT than in the WBI. Conclusion We did not find a benefit of SCNRT for N1 breast cancer patients receiving AT-based chemotherapy.
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