一种与AARS2相关的白血病变异的较温和表型相关的新型致病变体 - 一份病例报告
Joana Fernandes1, João Moura1, João Tarrio2,3
1Neurology Department, Unidade Local de Saúde de Santo António, Porto, Portugal.
Molecular genetics and metabolism reports
|November 14, 2024
概括
由于AARS2基因变异引起的成人发病性白血病可能呈现出较轻微的症状和较慢的进展. 一种新型变种c.730G>A (p.Val244Ile) 与较不严重的临床和放射性表现有关.
科学领域:
- 神经学 神经学
- 遗传学 是一个遗传学.
- 神经成像是一种神经成像.
背景情况:
- 成人发病的白血病是罕见的,渐进的白质疾病.
- 在AARS2基因的致病变体导致这些白血病的子集.
- 越来越多地认识到与AARS2相关的白脑病变的表型变异性.
研究的目的:
- 描述一个晚期发病的AARS2相关的白细胞大脑病变.
- 在AARS2基因中报告一种新的致病变体.
- 为了突出AARS2白血病变异症中较温和的表型的潜力.
主要方法:
- 一个40岁的男性患有慢性头痛和抑郁症的病例报告.
- 神经学检查和脑部MRI (T2/T2-FLAIR高强度).
- 针对白血病基因变异的全外体测序和多基因面板.
主要成果:
- 这位患者出现了晚期发病的白细胞大脑病变和轻微的表型.
- 确定了两种异合体AARS2变体:c.595C>T (致病性) 和一种新型c.730G>A (p.Val244Ile,可能致病性).
- 大脑MRI显示额叶和周周结膜白质的超强度没有受限制的扩散.
结论:
- 与AARS2相关的白血病可能表现出广泛的临床和放射性表型.
- 新型AARS2变种c.730G>A (p.Val244Ile) 可能与较轻的疾病过程有关.
- 成人发病的白细胞大脑病变,包括与AARS2相关的病变,可能表现出微妙的迹象,并且仍在继续识别新型变体.
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