Biologically effective dose in total-body irradiation and hematopoietic stem cell transplantation

被引:44
作者
Kal, Henk B.
van Kempen-Harteveld, M. Loes
Heijenbrok-Kal, Majanka H.
Struikmans, Henk
机构
[1] Univ Utrecht, Med Ctr, Dept Radiotherapy, NL-3584 CX Utrecht, Netherlands
[2] Univ Med Ctr Rotterdam, Erasmus MC, Dept Epidemiol & Biostat, Rotterdam, Netherlands
[3] Leiden Univ, Med Ctr, Dept Radiotherapy, Leiden, Netherlands
关键词
allogeneic HSCT; BED; eukemia; organ shielding; TBI;
D O I
10.1007/s00066-006-1528-6
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Background and Purpose: Total-body irradiation (TBI) is an important part of the conditioning regimen for hematopoietic stem cell transplantation (HSCT) in patients with hematologic malignancies. The results after treatment with various TBI regimens were compared, and dose-effect relationships for the endpoints relapse incidence, disease-free survival, treatment-related mortality, and overall survival were derived. The aim was to define requirements for an optimal treatment schedule with respect to leukemic cell kill and late normal-tissue morbidity. Material and Methods: A literature search was performed. Three randomized studies, four studies comparing results of two or three TBI regimens, and nine reports with results of one specific TBI regimen were identified. Biologically effective doses (BEDS) were calculated. The results of the randomized studies and the studies comparing results of two or three TBI regimens were pooled, and the pooled relative risk (RR) was calculated for the treatments with high BED values versus treatments with a low BED. BED-effect relationships were obtained. Results: RRs for the high BED treatments were significantly lower for relapse incidence, not significantly different for disease-free survival and treatment-related mortality, and significantly higher for overall survival. BED-effect relationships indicate a decrease in relapse incidence and treatment-related mortality and an increase in disease-free and overall survival with higher BED values. Conclusion: "More dose is better", provided that a TBI setting is used Limiting the BEDS of Lungs, kidneys, and eye Lenses.
引用
收藏
页码:672 / 679
页数:8
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