在患有非典型临床表现的患者中重新评估MYH9 p.I1816V变异
Takao Konomoto1, Fumito Wakamatsu2, Hiromi Sakaguchi3
1Department of Pediatrics, Faculty of Medicine, University of Miyazaki, 5200 Kiyotake-Cho, Kihara Miyazaki City, Miyazaki, Japan. konomoto@med.miyazaki-u.ac.jp.
Pediatric nephrology (Berlin, Germany)
|November 16, 2025
概括
与MYH9相关的疾病 (MYH9-RD) 在诊断方面存在挑战. 在一个患有脏问题但缺乏典型的MYH9-RD症状的患者中发现了一种罕见的MYH9变体 (p.I1816V),突出了诊断复杂性.
科学领域:
- 遗传学 遗传学 是一个
- 腎臟病學 (nephrology) 是一種醫學.
- 血液学 血液学 血液学
背景情况:
- 与MYH9相关的疾病 (MYH9-RD) 是一种自体主导性疾病.
- 它的特征是巨型血缩小,白细胞入,听力损失和病.
- 非肌肉肌肉蛋白重链IIA (NMMHC-IIA) 是由MYH9基因编码的.
研究的目的:
- 描述一个16岁男孩患有脏疾病和罕见的MYH9变体的病例.
- 调查与MYH9-RD相关的临床表现和遗传发现.
- 突出罕见遗传变异带来的诊断挑战.
主要方法:
- 临床病例的介绍.
- 脏活检分析.
- 对MYH9变种进行基因检测.
- 在中性粒细胞和细胞中NMMHC-IIA表达的评估.
主要成果:
- 这位患者呈现出持续的蛋白尿和活检证明的膜性脏病与焦点细分性硬化症.
- 基因检测显示了一种罕见的MYH9变体 (p.I1816V),此前与爱斯坦综合征有关.
- 患者的血小板数量正常,白细胞不含,NMMHC-IIA表达正常.
- 据预测,p.I1816V变种是良性的,并且在东亚人口中更为普遍.
结论:
- 这一案例凸显了解释罕见MYH9变异的困难,特别是当临床特征与典型的MYH9-RD.不一致时.
- 这些发现强调需要仔细评估遗传变异与临床表现相结合,特别是在下一代测序方面的进步.
- 需要进一步的研究才能充分了解罕见的MYH9变种的致病性和临床意义.
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