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J Rheumatol:幼年特发性关节炎中甲氨蝶呤基因多态性与治疗效果的关系

2017-06-06 xiangting MedSci原创

不同MTX代谢途径的SNP影响MTX治疗。与功效相比,遗传变异性是毒性更好的标志物。

这项研究旨在探讨幼年特发性关节炎(JIA)中甲氨蝶呤(MTX)功效和毒性的临床和药物遗传学决定因素。

回顾性分析了119例用MTX治疗的JIA患者。使用青少年关节炎疾病活动评分包括71个关节来评估疾病活动。无反应者是6个月治疗后没有达到30%改善的患者,或由于无效而在前6个月内转用生物药物。记录所有不良事件(AE)。使用实时PCR方法检测编码MTX转运蛋白、叶酸途径和腺苷途径的基因中单核苷酸多态性(SNP)的基因分型。使用单变量和多变量惩罚逻辑和Cox回归来分析数据。

30例患者(25.8%)被定义为无应答者,55例(47.2%)在随访期间转为生物制剂。在总405患者年中65例患者(54.5%)出现了AE, 10例(8.4%)因AE而停用MTX。AMPD1 rs17602729和MTHFD1 rs2236225与胃肠道AE相关,而后者与MTRR rs1801394 一起也表现出与发生肝毒性的关联。MTHFR rs1801131,ABCG2 rs2231137,野生型MTR rs1805087和野生型ABCC2 rs2273697被证明为由于AE而停止MTX治疗的潜在标志物。MTHFR rs1801133, MTRR rs1801394, and ABCC2 rs2273697与转为生物治疗有关。

不同MTX代谢途径的SNP影响MTX治疗。与功效相比,遗传变异性是毒性更好的标志物。

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    2017-06-08 lmm397
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    2017-06-08 xzw120
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    2017-06-07 执着追梦

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