一个家庭的SPIN4相关的X相关过度生长
Lisanna Põlluaas1, Stella Lilles2, Aleksandr Peet2
1University of Tartu, Institute of Clinical Medicine; Genetics and Personalized Medicine Clinic, Tartu University Hospital.
European journal of medical genetics
|March 4, 2026
概括
斯宾林家族成员4 (SPIN4) 中的一个功能丧失变体导致过度生长综合征. 这种遗传状况与身高高和其他发育变化有关,影响多个家庭成员.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 内分泌学 在内分泌学.
- 发展生物学 发展生物学
背景情况:
- 斯宾林家族成员4 (SPIN4) 是一个位于X染色体上的表观遗传读者基因.
- 最近在SPIN4中发现的一种功能丧失变异影响了WNT/β-catenin通路.
- 这种变异与SPIN4相关的超生长综合征在一个大家庭中有关.
研究的目的:
- 报告一个新的SPIN4相关过度生长综合征病例.
- 确认综合症在另一个家庭的遗传基础.
- 将表型特征与以前报告的病例进行比较.
主要方法:
- 进行了exome测序来识别遗传变异.
- 收集了包括生长参数,体检和发育评估在内的表型数据.
- 临床特征与先前发表的队列相比较.
主要成果:
- 在试验对象,母亲和母亲的祖母中发现了一种功能丧失的SPIN4变体 (NM_001012968.3:c.312_313del:p.(Arg104Serfs*24).
- 索引病例呈现出高个身材 (+2.0 SD),突出的关节,壮症和低骨矿物质密度.
- 受影响的雌性表现出偏斜的X-无活化,并没有达到其父母的中等身高,而雄性试验对象显示出显著的高个体.
结论:
- 这项研究证实了SPIN4功能丧失变体在引起过度生长综合征方面的作用.
- 这种综合征表现出变化的表现力,特别是在女性中,并且与男性的高个体相关.
- 对WNT/β-catenin通路在SPIN4相关过度生长中的作用进行进一步研究是有必要的.
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