中国人民解放军总医院第三医学中心内分泌科,北京 100039
Received:14 April 2026,
Revised:2026-05-19,
Accepted:08 June 2026,
Published:28 October 2026
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朱泊羽,肖海英,曹曦,等.VHL综合征2型五家系临床及遗传特征分析[J].重庆医科大学学报,2026,51(10):1377-1386.
Zhu Boyu,Xiao Haiying,Cao Xi,et al.Clinical and genetic features of type 2 von Hippel-Lindau syndrome: an analysis of five pedigrees[J].Journal of Chongqing Medical University,2026,51(10):1377-1386.
朱泊羽,肖海英,曹曦,等.VHL综合征2型五家系临床及遗传特征分析[J].重庆医科大学学报,2026,51(10):1377-1386. DOI: 10.13406/j.cnki.cyxb.004140.
Zhu Boyu,Xiao Haiying,Cao Xi,et al.Clinical and genetic features of type 2 von Hippel-Lindau syndrome: an analysis of five pedigrees[J].Journal of Chongqing Medical University,2026,51(10):1377-1386. DOI: 10.13406/j.cnki.cyxb.004140.
目的
2
探讨冯·希佩尔-林道病(von Hippel-Lindau disease,VHL)基因突变的临床意义、基因型-表型相关性及家系管理策略,为VHL综合征的遗传咨询和临床干预提供依据。
方法
2
回顾性分析2022年6月至2025年6月在中国人民解放军总医院第三医学中心内分泌科确诊的5例VHL综合征2型患者及其家系成员的临床特征和全外显子组测序结果(家系1:先证者及4名成员;家系2:先证者及5名成员;家系3:先证者及3名成员;家系4:先证者及3名成员;家系5:先证者及24名成员)。
结果
2
5个VHL家系的临床特征和遗传学分析显示其临床表现多样,且存在胚系突变。先证者年龄18~44岁,其中男性4例,女性1例。家系1先证者VHL基因第1外显子c.293A>G(Tyr98Cys)突变,其女儿为杂合突变携带者(无临床表型)。家系2先证者VHL基因第3外显子c.482G>A(Arg161Gln)杂合突变,其母亲携带相同突变(双侧肾上腺嗜铬细胞瘤)。家系3先证者VHL基因第3外显子c.467A>G(Tyr156Cys)突变,其父亲无该突变、母亲为杂合突变携带者(无临床表型)、弟弟为杂合突变携带者(单侧肾上腺嗜铬细胞瘤)。家系4先证者VHL基因第2内含子c.463+106C>T(致病性不明)突变,其哥哥和儿子也携带该突变(均无临床表型)。家系5先证者VHL基因第1外显子c.292T>A(p.Tyr98Asn)突变,检测其24名家系成员的基因,其中5例携带致病基因并有临床表型。
结论
2
同一密码子不同突变可致显著临床异质性;内含子区新突变的发现扩展了VHL突变谱。VHL综合征患者均建议行相关疾病的检查及家系基因筛查。
Objective
2
To investigate the clinical significance of gene mutations,genotype-phenotype correlations,and pedigree management strategies in von Hippel-Lindau(VHL) syndrome,and to provide a basis for genetic counseling and clinical intervention.
Methods
2
A retrospective analysis was performed for the clinical data and whole-exome sequencing results of five patients with type 2 VHL syndrome who were diagnosed in The Third Medical Center of Chinese PLA General Hospital from June 2022 to June 2025,along with their family members(Pedigree 1:the proband and 4 members;Pedigree 2:the proband and 5 members;Pedigree 3:the proband and 3 members;Pedigree 4:the proband and 3 members;Pedigree 5:the proband and 24 members).
Results
2
The clinical and genetic analysis of the five pedigrees with VHL syndrome showed diverse clinical manifestations and the presence of germline mutations. The probands had an age of 18 to 44 years,and there were four male probands and one female proband. In Pedigree 1,the proband carried a c.293A
>
G(p.Tyr98Cys) mutation in exon 1 of the
VHL
gene,and his daughter was a heterozygous carrier without clinical phenotype. In Pedigree 2,the proband harbored a heterozygous mutation of c.482G
>
A(Arg161Gln) in exon 3 of the
VHL
gene,and his mother carried the same mutation and presented with bilateral adrenal pheochromocytoma. In Pedigree 3,the proband carried a c.467A
>
G(p.Tyr156Cys) mutation in exon 3 of the
VHL
gene,and his father did not carry this mutation,while his mother was a heterozygous carrier without clinical phenotype,and his younger brother was a heterozygous carrier with unilateral adrenal pheochromocytoma. In Pedigree 4,the proband carried a mutation of c.463+106C
>
T(variant of unknown significance) in intron 2 of the
VHL
gene,and both his younger brother and his son carried the same mutation and had no clinical phenotype. In Pedigree 5,the proband carried a c.292T
>
A(p.Tyr98Asn) mutation in exon 1 of the
VHL
gene,and genetic testing was performed on 24 family members,among whom five were identified as carriers of the pathogenic mutation and exhibited corresponding clinical phenotypes.
Conclusion
2
Different mutations occurring at the same codon of the
VHL
gene may result in significant clinical heterogeneity,and the identification of novel intronic mutations has further expanded the mutational spectrum of VHL syndrome. Therefore,it is recommended to perform comprehensive screening for related diseases and pedigree-based genetic testing for all patients with VHL syndrome.
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