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定义TIA1和SQSTM1基因肌肉病变的情况

Paula Panos-Basterra¹, Julian Theuriet², Aleksandra Nadaj-Pakleza³

¹Centre de Référence des maladies Neuromusculaires Nord/Est/Ile-de-France, Institut de Myologie, Hôpital Pitié-Salpêtrière, APHP, 47-83 bd de l'Hôpital, Paris 75013, France; Servicio de Neurología, Hospital de la Princesa, Madrid, Spain.

Neuromuscular disorders : NMD

|August 14, 2024

概括

这项研究定义了TIA1/SQSTM1肌肉病变,这是一个罕见的二代性疾病. 研究人员确定了关键的遗传变异,并描述了疾病谱,强调了它在受影响个体中的一致的临床表现.

科学领域:

神经学神经学
遗传学是一个遗传学.
罕见疾病罕见疾病

背景情况:

TIA1/SQSTM1肌病是一种罕见的二原性神经肌肉疾病.
了解其临床谱和遗传基础对于诊断和管理至关重要.

研究的目的:

定义TIA1/SQSTM1肌肉病变的临床和遗传谱.
调查TIA1变异在远端肌肉病患者中的流行率.

主要方法:

描述了四名新的法国患者TIA1 p.Asn357Ser和SQSTM1 p.Pro392Leu变体.
审查了文献,包括20个额外的案例.
分析了TIA1变体频率的远端肌肉病基因组.

主要成果:

24名患者 (75%男性) 呈现出晚发症,不对称的远部虚弱,轻微的CK升高和肌病性EMG.
肌肉活检显示了边缘真空,肌纤维细胞失调和P62/TDP43聚合物.
在所有患者中都存在TIA1 p.Asn357Ser; SQSTM1 p.Pro392Leu是最常见的变体 (71%).
在远端肌肉病患者中发现TIA1 p.Asn357Ser的发病率为2.7%.

结论:

TIA1/SQSTM1肌病症表现出同质的表型,证实了其二基因变异的致病性.
这种TIA1 p.Asn357Ser变异可能在远端肌肉病变中充当基因修饰剂.

关键词:

基因遗传是一种基因遗传.远端肌肉病变的情况肌纤维状肌肉病变肌纤维状肌肉病变带边的真空孔 (Rimmed vacuoles) 是一个带边的真空孔.这是一种TIA1/SQSTM1肌肉病变.

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