罗兰德-德布奎斯类型的分段性失育症是由HSPG2的致病变体引起的 - - 这是一种在五名患者中共享的创始人哈普洛型
Paniz Farshadyeganeh1, Takahiro Yamada2, Hirofumi Ohashi3
1Division of Neurogenetics, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan.
严重的骨疾病 - - 分断性失调症,其非致命类型 (DDRD) 具有与HSPG2基因的遗传联系. 这项研究在五名DDRD患者中确定了HSPG2的四种致病变体,确定DDRD是SJS和DDSH的等位基性疾病.
科学领域:
- 遗传学 遗传学 是一个
- 骨发育不良症 骨发育不良症
- 分子生物学分子生物学
背景情况:
- 分段性发育不良 (DD) 是一种严重的骨发育不良,具有致命的 (DDSH) 和非致命的 (DDRD) 亚型.
- DDSH和施瓦茨-詹佩尔综合征 (SJS) 是由HSPG2基因的病原变异引起的.
- DDRD的遗传基础仍然是未知的.
研究的目的:
- 为了确定非致命的基因原因的Rolland-Desbuquois类型的Dyssegmental Dysplasia (DDRD).
- 研究HSPG2基因在DDRD中的作用.
- 为了确定SJS,DDRD和DDSH之间的等位体关系.
主要方法:
- 对5名被诊断患有DDRD的患者进行了基因分析.
- 在HSPG2基因中识别和表征致病变异.
- 哈普洛型分析来调查共同的祖先.
主要成果:
- 在五名DDRD患者中发现了HSPG2基因中的四种致病变体.
- 两名患者是p.G3324R变异的同卵性;三名患者是异卵性.
- 哈普洛型分析表明患者之间有一个共同的创始人哈普洛型.
结论:
- 在HSPG2基因的致病变体负责DDRD.
- 施瓦茨 - 詹佩尔综合征 (SJS),DDRD和银人 - 工匠类型的分段性发育不良 (DDSH) 是等位基性疾病.
- HSPG2突变解释了在SJS,DDRD和DDSH中观察到的表型谱.
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