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 / Journal of the Korean Cancer Association, 대한암학회지
Cancer Research and Treatment
; : 970-980, 2017.
Article
in En
| WPRIM
| ID: wpr-160275
Responsible library:
WPRO
ABSTRACT
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 ANDMETHODS:
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.Key words
Full text:
1
Index:
WPRIM
Main subject:
Radiotherapy
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Recurrence
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Breast
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Breast Neoplasms
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Lymphatic Irradiation
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Mastectomy, Segmental
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Case-Control Studies
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Radiation Pneumonitis
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Radiotherapy, Adjuvant
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Disease-Free Survival
Type of study:
Clinical_trials
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Observational_studies
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Prognostic_studies
/
Risk_factors_studies
Limits:
Humans
Language:
En
Journal:
Cancer Research and Treatment
Year:
2017
Type:
Article