在MPL基因上具有双重突变的MPNs的额外遗传变异和克隆进化:两个病例报告
Maria Stella Pennisi1,2, Sandra Di Gregorio1,2, Elena Tirrò1,2
1Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy.
Hematology reports
|June 27, 2023
概括
这项研究报告了两例罕见的骨髓增殖性瘤 (MPNs) 病例,同时出现了双倍的Janus Kinase 2 (JAK2) 和骨髓增殖性白血病 (MPL) 病毒瘤基因突变,突出了下一代测序在识别复杂遗传变化的有用性.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 分子遗传学 分子遗传学
背景情况:
- 基本血小板血 (ET) 和原发性骨髓纤维化 (PMF) 是费城染色体阴性慢性骨髓增殖性新生体 (MPN).
- 常见的突变包括50-60%的Janus 激酶2 (JAK2) 和3-5%的病例中发生的肌肉增殖性白血病 (MPL) 病毒瘤基因.
- 与桑格测序相比,下一代测序 (NGS) 在检测并发的遗传改变方面具有更高的灵敏度.
研究的目的:
- 描述两个同时具有双重MPL突变的MPN患者.
- 调查这些罕见的遗传变化的突变景观和病原性贡献.
- 为了确定这些不寻常的骨髓增殖性瘤的起源.
主要方法:
- 下一代测序 (NGS) 用于全面的基因分析.
- 殖民地形成试验用于评估细胞增殖和克隆性.
- 对患有基本血小板血 (ET) 和初级骨髓纤维化 (PMF) 的患者样本的分析.
主要成果:
- 一个ET病例与并发的MPL (V501A-W515R) 和JAK2 (V617F) 突变.
- 一个PMF病例与不常见的同时MPL (V501A-W515L) 突变.
- 确定有助于MPN病变的额外遗传变异.
结论:
- 同时的双MPL突变,以及JAK2突变,可以在MPN中发生.
- NGS对于发现骨髓增殖性瘤中复杂的突变特征至关重要.
- 对这些复杂的遗传改变进行进一步的研究是有必要的,以了解MPN的致病性.
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