中华皮肤科杂志 ›› 2022, Vol. 55 ›› Issue (8): 716-720.doi: 10.35541/cjd.20210566

• 研究报道 • 上一篇    下一篇

ACVRL1基因突变致合并主动脉窦瘤的遗传性出血性毛细血管扩张症1家系调查

闫娜1    刘燕1    李华军2    李洋3    谭宣丰4    杨怡5    晋亮   

  1. 1汉中市中心医院皮肤科,汉中  723000;2汉中市中心医院心脏外科,汉中  723000;3汉中市中心医院超声诊断科,汉中  723000;4西安交通大学第二附属医院皮肤科,西安  710004;5解放军总医院第一医学中心皮肤科,北京  110853;6空军特色医学中心皮肤科,北京  110142
  • 收稿日期:2021-08-04 修回日期:2022-01-10 发布日期:2022-08-02
  • 通讯作者: 晋亮 E-mail:dermjin@aliyun.com
  • 基金资助:
    空军军医大学“人才工程雏鹰计划”项目(KT2021HQ021)

Hereditary hemorrhagic telangiectasia complicated by aortic sinus aneurysm caused by a pathogenic mutation in the ACVRL1 gene: a family survey

Yan Na1, Liu Yan1, Li Huajun2, Li Yang3, Tan Xuanfeng4, Yang Yi5, Jin Liang6   

  1. 1Department of Dermatology, Hanzhong Central Hospital, Hanzhong 723000, Shaanxi, China; 2Department of Cardiac Surgery, Hanzhong Central Hospital, Hanzhong 723000, Shaanxi, China; 3Department of Ultrasound Diagnosis, Hanzhong Central Hospital, Hanzhong 723000, Shaanxi, China; 4Department of Dermatology, The Second Affiliated Hospital of Xi′an Jiaotong University, Xi′an 710004, China; 5Department of Dermatology, The First Medical Center of Chinese PLA General Hospital, Beijing 110853, China; 6Department of Dermatology, Air Force Medical Center, Beijing 110142, China
  • Received:2021-08-04 Revised:2022-01-10 Published:2022-08-02
  • Contact: Jin Liang E-mail:dermjin@aliyun.com
  • Supported by:
    "Young Eagle Program of Talent Project" of Air Force Military Medical University(KT2021HQ021)

摘要: 【摘要】 目的 研究1个家族性合并主动脉窦瘤的遗传性出血性毛细血管扩张症家系的临床及遗传学特点,检测分析其致病基因。方法 收集先证者及其亲属的临床资料和外周血,提取基因DNA,全外显子组测序筛查致病基因,随后采用Sanger测序验证。结果 先证者及其女儿、外孙、外孙女ACVRL1基因在3号外显子137号核苷酸由鸟嘌呤G变为腺嘌呤A(c.137G>A),导致第46号氨基酸由半胱氨酸变为酪氨酸(p.C46Y),家系中另5例无临床症状者未携带此突变基因。结论 该家系中合并主动脉窦瘤的遗传性出血性毛细血管扩张症Ⅱ型患者存在 ACVRL1基因c.137G>A(p.C46Y)致病突变,亚洲人群未见此突变报道。

关键词: 毛细血管扩张, 遗传性出血性, 主动脉窦瘤, DNA突变分析, ACVRL1基因

Abstract: 【Abstract】 Objective To investigate clinical and genetic characteristics of a family with hereditary hemorrhagic telangiectasia complicated by aortic sinus aneurysm, and to detect and analyze causative genes. Methods Clinical data and peripheral blood samples were collected from the proband and her relatives, and genomic DNA was extracted. Causative genes were screened by whole-exome sequencing, and then verified by Sanger sequencing. Results A heterozygous mutation c.137G>A was identified at position 137 in exon 3 of the ACVRL1 gene in the proband, her daughter, grandson and granddaughter, which led to the substitution of cysteine by tyrosine at amino acid position 46 (p.C46Y). The mutation was not found in any of the other 5 family members without clinical symptoms. Conclusion A causative mutation c.137G>A (p.C46Y) in the ACVRL1 gene was identified in the family with hereditary hemorrhagic telangiectasia type 2 complicated by aortic sinus aneurysm, which had not been previously reported in Asian populations.

Key words: Telangiectasia, hereditary hemorrhagic, Sinus aneurysm of aorta, DNA mutation analysis, ACVRL1 gene