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Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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Antigen receptors are essential components of the immune system crucial in defending the body against foreign invaders. These receptors are present on the surface of B and T cells, enabling them to recognize antigens and mount an appropriate immune response.
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变体特定的BCR::ABL1定量差异在慢性骨髓性白血病中.

Koen Jacobs1, Alena Moerman2, Karl Vandepoele3

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PubMed
概括

精确量化BCR::ABL1融合基因转录对于慢性髓性白血病 (CML) 管理至关重要. 使用转录特定的标准曲线或绝对量化方法可以减少BCR::ABL1测量的中心间变异性.

关键词:
在 BCR-ABLL 中.在CML中,CML是CML.最少残留疾病的最小残留疾病.

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科学领域:

  • 分子诊断学 分子诊断学
  • 在瘤学瘤学.
  • 临床化学 临床化学

背景情况:

  • 在全血中精确量化BCR::ABL1融合基因对于治疗慢性髓性白血病 (CML) 至关重要.
  • BCR::ABL1融合蛋白的大小因基因断点而异,大多数CML患者具有p210 BCR::ABL1融合基因.
  • p210 BCR::ABL1融合基因通常来自e14a2 (b3a2) 或e13a2 (b2a2) 的mRNA转录结.

研究的目的:

  • 用定量聚合酶链反应 (qPCR) 来评估BCR::ABL1量化中的中心间变异性.
  • 评估转录特异性标准曲线和数字滴滴PCR (ddPCR) 对减少量化差异的影响.
  • 突出CML患者监测中量化差异的临床影响.

主要方法:

  • 在两个ISO15189认证的中心分析了25个CML样本,使用基于欧洲抗癌的标准化qPCR协议.
  • 通过转录特定的标准曲线和数字滴滴PCR (ddPCR) 进行了重新分析.
  • 两个中心的qPCR结果与ddPCR进行了比较,这是一种绝对量化方法.

主要成果:

  • 在e13a2转录变体中观察到显著的中心间差异 (高达1log),但在e14a2转录中没有.
  • 使用转录特定标准曲线的重新分析消除了这些中心间差异.
  • 转录特异性qPCR结果显示与ddPCR有显著的关联,特别是在较低的量化范围.

结论:

  • 转录特异性BCR::ABL1量化中的中心间差异可能会影响CML患者管理.
  • 使用转录特定的标准曲线或绝对量化方法可以显著降低这些差异.
  • 仔细解释量化差异是必不可少的,特别是对于在诊断中心之间转移的CML患者.