一个案例报告13q12.3微删除综合征由HMGB1的Haploinsufficiency引起
Ting Wen1,2,3, Brian J Shayota4, Lauren Wallace2
1Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah 84108, USA.
Case reports in genetics
|December 5, 2024
概括
一个罕见的13q12.3微删除综合征病例突出显示了HMGB1基因平分缺陷的作用. 在患有古典特征的儿科患者中,这种单基因删除为该综合征提供了新的见解.
科学领域:
- 遗传学 是一个遗传学.
- 儿科 儿科 儿科
- 罕见疾病 罕见疾病
背景情况:
- 13q12.3微切除会导致一个带有智力障碍,发育迟缓和独特面部特征的综合征.
- 之前的研究表明,高流动性组盒1 (HMGB1) 基因是13q12.3微删除综合征表型的关键贡献者.
- 13q12.3微删除综合征的确切遗传原因和表型谱需要进一步阐明.
研究的目的:
- 报告一个患有经典的13q12.3微删除综合征特征的儿科病例.
- 调查该患者综合征的遗传基础,重点关注HMGB1.1.
- 为了更好地界定与HMGB1损失相关的临床表型.
主要方法:
- 对患有发育迟缓,小头症和严重形症的儿科患者的临床评估.
- 基于三元的微阵列分析以确定遗传删除.
- 分析识别的删除对HMGB1基因和邻近基因的影响.
主要成果:
- 在13q12.3的62kb de novo异构缺失在试验中被确定.
- 这种删除完全涵盖了HMGB1基因的所有编码外基因.
- 删除没有影响任何其他邻近的基因,表明单基因删除.
- 患者呈现出13q12.3微删除综合征的典型特征,包括发育迟缓和小头症,以及焦虑和侵略性行为.
结论:
- 这一案例代表了一个罕见的HMGB1单基因缺失的例子,导致13q12.3微缺失综合征.
- 这些发现强烈支持HMGB1哈普洛缺陷症在该综合征中的致病作用.
- 本报告有助于对与HMGB1损失相关的临床表型有更深入的了解.
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