通过TWAS揭示了提奥普林反应的新遗传决定因素
Carlotta Bidoli1, Wenjian Yang2, Seth E Karol3
1Department of Life Sciences, University of Trieste, Trieste, Italy.
Clinical pharmacology and therapeutics
|September 5, 2025
概括
这项研究确定GNAQ是影响儿童急性淋巴细胞白血病 (ALL) 患者对6 - 墨素 (6MP) 耐受性的新基因. 这一发现有助于解释为什么一些患者尽管具有正常的TPMT和NUDT15基因,但仍会出现副作用.
科学领域:
- 药物基因组学
- 癌症学
- 分子生物学
背景情况:
- 急性淋巴细胞白血病 (ALL) 是最常见的儿童癌症,通常用6-美卡普 (6MP) 治疗.
- 治疗ALL的提浦林可能会导致剂量限制性毒性.
- 已知遗传因素 (TPMT,NUDT15) 并不能解释所有氨酸敏感性变异.
研究的目的:
- 在儿童ALL中确定6MP敏感性的新遗传决定因素.
- 专注于正常TPMT和NUDT15基因型的患者.
- 使用全转录组关联研究 (TWAS) 发现新的基因关联.
主要方法:
- 分析了来自AALL03N1试验的663名儿科ALL患者.
- 进行的TWAS专注于表达量特征位点 (eQTL).
- 在两个独立的队列 (圣犹大总疗法XV和XVI) 中验证的结果.
主要成果:
- TWAS确定了31个与6MP剂量强度相关的基因.
- 在独立的队列中,GNAQ表达与6MP剂量强度呈正相关性.
- 一种特定的GNAQ变体 (rs60561071) 与基因表达减少和6MP剂量强度降低有关.
结论:
- 在ALL患者中,GNAQ被确定为一种与氨酸耐受性相关的新基因.
- 这项研究强调了TWAS在理解药物反应变化的有用性.
- 这些发现有助于个性化治疗ALL.
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