双性XPR1变异与大脑化,发育迟缓,低血症和心肺表现型有关
Fakhriya Al-Azri1, Maryam Al-Rashdi1, Fathiya Al-Murshedi2
1Department of Genetics, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat, Oman.
Clinical genetics
|March 16, 2026
概括
在XPR1基因的双变异导致严重的新生儿疾病,其特点是肺高血压和神经发育障碍. 这种功能丧失的表型突出显示了XPR1的特征.
科学领域:
- 遗传学和分子生物学
- 人体生理学 人体生理学
- 发育生物学 发展生物学
背景情况:
- XPR1是唯一已确认的人类无机酸盐 (Pi) 出口商.
- 异构性致病性XPR1变体与自体主导性异常基础结化-6 (IBGC6) 有关.
- 双 XPR1 变体在人类疾病中的作用在很大程度上仍未被描述.
研究的目的:
- 研究双 XPR1 变异的临床和分子后果.
- 使用in silico和基于细胞的测试来评估已识别的XPR1变异的致病性.
- 为了确定XPR1功能丧失和一种新的严重新生儿疾病之间的联系.
主要方法:
- 来自四个血缘家族的临床数据对比.
- 外基因和桑格测序用于识别和确认双 XPR1 变异.
- 在基结构分析和基于细胞的功能流量测试以评估变异性病原性.
主要成果:
- 一种严重的新生儿表型被记录在案,包括持续性肺高血压,慢性肺病,心肌病,低血,小头症,内结以及严重的神经发育障碍.
- 在受影响个体中证实了双性XPR1变异NM_004736.4的同胞性:c.1811G>A:p.Arg604Gln.
- 在和功能研究表明,p.Arg604Gln变种损害无机酸盐出口,表明功能丧失机制.
结论:
- 特定的双性XPR1变异会导致一种新的,严重的新生儿疾病,预后不好.
- 已识别的XPR1变异导致功能丧失的表型,破坏无机酸盐平衡.
- 这项研究扩大了与XPR1功能障碍相关的表型谱.
关键词:
在XPR1中使用XPR1.基底腺结石化 基本腺结石化心肌病心脏病变的发生.慢性肺病是一种慢性肺病.低酸盐血症 (hypophosphatemia) 是一种疾病.智力障碍 智力障碍是一种智力障碍.更多相关视频
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