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학술논문

Impact of radiation on immune cells in patients with low-grade brain tumor: Identifying critical factors affecting lymphopenia and neutrophil-to-lymphocyte ratio

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영문명
Impact of radiation on immune cells in patients with low-grade brain tumor: Identifying critical factors affecting lymphopenia and neutrophil-to-lymphocyte ratio
발행기관
대한방사선종양학회
저자명
Yoo Kyung Choi Hong Seok Jang Byung Ok Choi Sea-Won Lee Jin Ho Song
간행물 정보
『대한방사선종양학회지』제41권 제2호, 120~128쪽, 전체 9쪽
주제분류
의약학 > 종양학
파일형태
PDF
발행일자
2023.06.30
4,000

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Purpose: Studies about the effect of radiation therapy (RT) on immune cells are usually limited to a high-grade glioma mostly exposed to chemotherapy and a high dose of steroid which also could affect immune cells. The purpose of this retrospective analysis of low-grade brain tumor patients treated by RT alone is to determine significant factors influencing neutrophil-to-lymphocyte ratio (NLR), absolute neutrophil counts (ANC), and absolute lymphocyte counts (ALC). Materials and Methods: A total of 41 patients who received RT between 2007 and 2020 were analyzed. Patients who received chemotherapy and high-dose of steroid were excluded. ANC and ALC were collected before starting RT (baseline) and within one-week before ending RT (post-treatment). Changes of ANC, ALC, and NLR between baseline and post-treatment were calculated. Results: ALC decreased in 32 patients (78.1%). NLR increased in 31 patients (75.6%). No patients developed grade 2 or higher hematologic toxicities. The decrease of ALC was significantly correlated with the dose to brain V15 in a simple and multiple linear regression (p = 0.043). Brain V10 and V20 adjacent to V15 were also marginally significant factors determining the reduction of lymphocytes (p = 0.050 and p = 0.059, respectively). However, it was difficult to find predictive factors affecting changes of ANC and NLR. Conclusion: In low-grade brain tumor patients who are treated by RT alone, ALC decreased and NLR increased in three-fourth of patients, although the magnitude was minimal. The decrease of ALC was mainly affected by low dose to the brain. However, RT dose was not correlated with changes of ANC or NLR.

목차

Introduction
Materials and Methods
Results
Discussion and Conclusion
Statement of Ethics
Conflict of Interest
Funding
Author Contributions
Data Availability Statement
References

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APA

Yoo Kyung Choi,Hong Seok Jang,Byung Ok Choi,Sea-Won Lee,Jin Ho Song. (2023).Impact of radiation on immune cells in patients with low-grade brain tumor: Identifying critical factors affecting lymphopenia and neutrophil-to-lymphocyte ratio. 대한방사선종양학회지, 41 (2), 120-128

MLA

Yoo Kyung Choi,Hong Seok Jang,Byung Ok Choi,Sea-Won Lee,Jin Ho Song. "Impact of radiation on immune cells in patients with low-grade brain tumor: Identifying critical factors affecting lymphopenia and neutrophil-to-lymphocyte ratio." 대한방사선종양학회지, 41.2(2023): 120-128

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