Haematologica:对天冬酰胺酶过敏的儿童,可能存在HLA-D区基因变异

2017-06-21 xiaoxiao MedSci原创

小儿急性淋巴细胞白血病患者使用门冬酰胺酶(大肠杆菌)治疗时,最常见的剂量限制性不良反应是过敏反应。来自匈牙利的研究人员在在匈牙利急性淋巴细胞白血病人群中研究了基于序列的人类白细胞抗原II类等位基因和天冬酰胺酶过敏之间的关系。研究人员利用新一代测序法检测359例儿童急性淋巴细胞白血病患者的HLA-DRB1和HLA-DQB1位点的四位分型。根据这两个位点的基因型数据,对其进行了单体型再构。为了探讨HL

小儿急性淋巴细胞白血病患者使用门冬酰胺酶(大肠杆菌)治疗时,最常见的剂量限制性不良反应是过敏反应。来自匈牙利的研究人员在在匈牙利急性淋巴细胞白血病人群中研究了基于序列的人类白细胞抗原II类等位基因和天冬酰胺酶过敏之间的关系。

研究人员利用新一代测序法检测359例儿童急性淋巴细胞白血病患者的HLA-DRB1和HLA-DQB1位点的四位分型。根据这两个位点的基因型数据,对其进行了单体型再构。为了探讨HLA-DQ复杂体的可能作用,研究人员也对HLA-DQA1基因进行了推断。采用多因素Logistic回归分析和贝叶斯网络方法识别天冬酰胺酶过敏相关的遗传风险因素。

携带HLA-DRB1*07:01和HLA-DQB1*02:02等位基因的患者与没有携带该基因的患者相比,前者天冬酰胺酶过敏的风险显著增高(分别为p=4.56x10-5,OR=2.86 (1.73-4.75);p=1.85x10-4; OR=2.99 (1.68-5.31); n=359)。单体型再构后HLA-DRB1*07:01-HLA-DQB1*02:02单体型与风险增加相关。在推断HLA-DQA1等位基因后,HLA-DRB1*07:01-HLA-DQB1*02:02单体型与天冬酰胺酶过敏的风险最高相关(p=1.22x10-5; OR=5.00 [2.43-10.29];n=257)。携带有HLA-DQB1*02:02等位基因的T细胞急性淋巴细胞白血病患者与单体型相关的比例明显少于前B细胞急性淋巴细胞白血病患者(6.5% vs. 19.2%,p=0.047)。

总之,研究人员在人类白细胞抗原II类等位基因中发现了一个与天冬酰胺酶过敏风险较高相关的单体型。本研究结果证实,HLA-D区基因的变异可能影响天冬酰胺酶过敏的进展。

原始出处:

Kutszegi N1, Yang X,et al.HLA-DRB1*07:01-HLA-DQA1*02:01-HLA-DQB1*02:02 haplotype is associated with a high risk of asparaginase hypersensitivity in acute lymphoblastic leukemia.Haematologica. 2017 Jun 8. pii: haematol.2017.168211. doi: 10.3324/haematol.2017.168211. [Epub ahead of print]

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    2017-07-02 一叶知秋
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    2017-06-23 fengyi812
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    2017-06-23 marongnuan
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    2017-06-21 ann y

    写我所做,做我所写。

    0

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