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摩洛哥的元色白血病:通过下一代测序 (NGS) 识别致病变体
Miloud Hammoud1,2, María Domínguez-Ruiz3,4, Imane Assiri1,2
1Metabolic Platform, Biochemistry Laboratory, Team for Childhood, Health and Development, Faculty of Medicine, Cadi Ayyad University, Marrakech B.P. 7010, Morocco.
Genes
|January 8, 2025
概括
诊断罕见的疾病,如甲色性白血病,是具有挑战性的. 结合生物化学测试,下一代测序 (NGS) 和拼接测试,有助于准确及及时诊断,识别新型基因变异.
科学领域:
- 遗传学 遗传学 是一个
- 生物化学 生物化学
- 神经学 神经学
背景情况:
- 罕见病患者面临的诊断延迟 (诊断奥德赛) 由于稀有性和低意识.
- 下一代测序 (NGS) 有潜力缩短罕见遗传疾病的诊断旅程.
研究的目的:
- 为了实现三名疑似甲色白血病的患者的完整诊断.
- 通过多方诊断方法研究基因变异在元染色性白血病变异中的作用.
主要方法:
- 使用生物化学分析,包括薄层染色学和HPLC-tandem质谱学.
- 使用下一代测序 (NGS) 基因面板和用于遗传分析的拼接试验.
- 集成深度表型与分子和生化技术,用于全面的诊断.
主要成果:
- 在两个家族的受影响个体中,在ARSA基因中确定了同卵性致病变体.
- 在家族1中发现了一种新型ARSA变种 (c.854+1dup),在家族2中发现了一种已知的变种 (c.640G>A).
- 发现家族2患者也是GNPTAB变体的携带者,可能会改变临床表现.
结论:
- 证实了新型ARSA变种c.854+1dup.dup的有害拼接效应.
- 验证了ARSA变异c.640G>A在元染色性白血病的参与.
- 证明了结合深度表型定型,NGS和生化/功能分析用于诊断罕见疾病的有效性.
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