与致病性RNASEH2B和SAMHD1变种相关的新表型
Ghada M H Abdel-Salam1, Maha Eid2, Manar A El-Serafy1
1Clinical Genetics Department, Human Genetics and Genome Research Institute, National Research Centre, Cairo, Egypt.
概括
艾卡迪-古提耶氏综合征 (AGS) 与影响天生的免疫反应的遗传变异有关. 这项研究发现了新的超神经症状,以及SAMHD1变种与甲状腺功能低下症之间的新相关性,扩大了AGS表型.
科学领域:
- 遗传学 遗传学 是一个
- 免疫学 免疫学 免疫学
- 神经学 神经学
背景情况:
- 艾卡迪-古提耶氏综合征 (AGS) 是先天免疫反应的遗传性疾病,主要与九个基因 (AGS1-9) 的致病变异有关.
- 这些变异通常会导致一系列的神经和发育问题,但也报告了罕见的超神经病例.
- 将这些遗传变异与各种临床表现联系在一起的确切机制仍在被阐明.
研究的目的:
- 在RNASEH2B和SAMHD1.1中报告艾卡迪-古蒂耶综合征的两例新病例,其中包括同卵性致病变体.
- 描述SAMHD1变种患者的新型神经外表现和与特异性偏偏甲状腺症的独特关联.
- 扩大对与AGS基因相关的表型谱的理解,特别关注超神经症状.
主要方法:
- 两名患有RNASEH2B和SAMHD1.1的同卵性致病变体的患者的病例报告.
- 临床表型,包括神经学检查,成像和生物化学测试.
- 文献综述总结了AGS基因相关疾病的神经外表现.
主要成果:
- 第1名患者患有RNASEH2B变异,出现关节病,直视网膜病,间歇性发烧和肝炎.
- 患有SAMHD1变异的患者2表现出晚发的肌肉,受损的/平衡,内化和寒冷,以及平均智力.
- 这项研究报告了第一个与异常性偏偏甲状腺症和致病性SAMHD1变体之间的关联,扩大了已知的表型.
结论:
- AGS基因中的致病变体可以导致比以前认可的更广泛的超神经症状.
- 在患有SAMHD1变异的患者中鉴定出异常性偏甲状腺症扩大了该基因的临床谱.
- 对这些表型的更好理解有助于更早的诊断,遗传咨询和针对性健康监测受影响的个体.
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