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방사선종양학
- 2023년 12월호
[Front Oncol .] Abscopal effect in metastatic breast cancer treated with stereotactic body radiotherapy in the absence of immunotherapy순천향의대 / 김재식, 장아람*
- 출처
- Front Oncol .
- 등재일
- 2023 Oct 6:13:1243053. doi: 10.3389/fonc.2023.1243
- 저널이슈번호
- 내용
Abstract
Purpose: In this study, we aimed to assess the abscopal effect (AE) after CyberKnife stereotactic body radiotherapy (SBRT) in metastatic breast cancer patients without immunotherapy.Methods: We reviewed breast cancer patients who received SBRT with a fraction size of ≥ 6 Gy for metastatic lesions between July 2008 and December 2021. We selected patients who had at least one measurable extracranial lesion in addition to SBRT target lesions and were not treated with immunotherapy. A total of 40 SBRT cases from 34 patients were included in the analysis. The AE was defined as occurring before the overall progression of the disease, regardless of the use of systemic treatment.
Results: The median follow-up duration was 16.4 months. Among 40 SBRT cases, the AE was observed in 10 (25.0%) with a median interval of 2.1 months. Of these lesions, 70.0% did not progress for one year. In multivariate logistic regression analysis, no change in systemic treatment after SBRT was significantly associated with an increase in the AE (odds ratio [OR] = 1.428, 95% confidence interval [CI] = 1.108 - 1.841, p = 0.009). A post-SBRT neutrophil-to-lymphocyte ratio (NLR) of < 2 marginally increased the AE (OR = 1.275, 95% CI = 0.998 - 1.629, p = 0.060). However, a high SBRT dose and large planning target volume did not (p = 0.858 and 0.152, respectively) in univariate analysis.
Conclusions: One out of four patients experienced the AE after SBRT in the absence of immunotherapy. The AE could occur more frequently when systemic treatment remains unchanged, and patients have a low NLR after SBRT.
Affiliation
Jae Sik Kim 1, Ah Ram Chang 1
1Department of Radiation Oncology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea.
- 키워드
- abscopal effect; breast cancer; metastasis; neutrophil-to-lymphocyte ratio; stereotactic body radiotherapy.
- 덧글달기
- 이전글 [PLoS One .] Quantitative radiomics approach to assess acute radiation dermatitis in breast cancer patients
- 다음글 [BMC Cancer .] Risk factor analysis of the development of severe radiation pneumonitis in patients with non-small cell lung cancer treated with curative radiotherapy, with focus on underlying pulmonary disease
편집위원
전이성 유방암에서 면역치료를 시행받지 않은 환자를 대상으로 SBRT 후 abscopal effect가 25%에서 관찰됨을 보고함.
덧글달기닫기2023-12-05 17:11:22
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