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有针对性的长读测序识别了未解决的11β-基酶缺乏症中缺失的致病变体

Jidong Liu^1,2,3, Huihui Tian⁴, Xinchen Jin⁴

¹Department of Endocrinology and Metabolism, Cheeloo College of Medicine, Qilu Hospital, Shandong University, Jinan, 250012, P.R. China.

BMC endocrine disorders

|October 14, 2024

概括

在一个中国家庭中对11β-基酶缺陷 (11β-OHD) 的遗传分析揭示了两种CYP11B1变异. 基于PCR的综合远程NGS和目标长读序列测序为11β-OHD提供了准确的诊断.

科学领域:

遗传学是一个遗传学.
内分泌学在内分泌学.
分子生物学分子生物学

背景情况:

11β-基酶缺乏 (11β-OHD) 是先天性上腺增生症 (CAH) 的常见原因.
由于CYP11B1/CYP11B2基因相似性和复杂的结构变异,对11β-OHD的遗传测试具有挑战性.
这项研究调查了一家中国家庭11β-OHD的遗传基础.

研究的目的:

来自一个中国家庭的两个兄弟姐妹中,确定11β-OHD的潜在遗传原因.
评估先进的测序技术的有效性,以诊断11β-OHD.

主要方法:

收集了临床数据和外周血液样本.
使用液体染色学-并联质谱法 (LC-MS/MS) 测量了性类固醇度.
基于远程PCR的下一代测序 (NGS) 和目标长读测序 (T-LRS) 用于检测CYP11B1基因中的致病变体.

主要成果:

两个兄弟姐妹都出现了早期高血压,ACTH,孕激素和的升高,以及皮质醇和的降低.
在CYP11B1.1.中,NGS发现了一种异合误解变体 (c.281C>T,p.P94L).
T-LRS检测到一种新的删除插入变体 (c.954+78_980delinsACAG) 与错误变体相交,证实了遗传诊断.

结论:

基于远程PCR的NGS和T-LRS的综合方法为11β-OHD遗传诊断提供了可靠和准确的方法.
这种综合策略对于识别复杂的CYP11B1变异和11β-OHD影响的家族中载体测序是有效的.

关键词:

11β-基酶的使用方法在CYP11B1B1中.遗传性上腺过度增生长读序列的测序方式

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