变种SMAD4载体的表型特征
Claire Caillot1, Jean-Christophe Saurin2,3, Valérie Hervieu4
1Service de Génétique et Centre de référence pour la maladie de Rendu-Osler, Femme-Mère-Enfants Hospital, Hospices Civils de Lyon, Bron, France.
Journal of medical genetics
|April 4, 2024
概括
这种SMAD4变异会导致遗传性出血性远程连接 (HHT) 和青少年多发症综合征 (JPS). 这项研究详细介绍了SMAD4变异的HHT患者,揭示了经常出现的消化问题和结缔组织疾病,需要进行全面的查.
科学领域:
- 遗传学和基因组学 遗传学和基因组学
- 血管生物学 血管生物学
- 胃肠病学 胃肠病学
背景情况:
- 遗传性出血性电脉切开症 (HHT) 和青少年多发症综合征 (JPS) 与SMAD4病原性变体有关.
- 在一些患者中观察到重叠的症状和额外的连接组织疾病.
- 这项研究重点关注HHT参考中心队列中的SMAD4变异携带者.
研究的目的:
- 为了划分SMAD4变异载体的表型,在HHT参考中心进行了跟踪.
- 调查与SMAD4变异相关的临床表现的范围.
主要方法:
- 使用临床研究数据进行的观察性研究,用于Rendu-Osler队列数据库.
- 对1114名HHT患者的分析,以确定SMAD4变异携带者.
- 基于HHT,JPS和结合组织疾病的确定的诊断标准进行表型表征.
主要成果:
- 在1114名HHT患者中,33名参与者 (3%) 携带SMAD4变种.
- 观察到高频率的HHT症状 (表观症,telangiectases,AVMs) 和JPS标准.
- 消化血管扩张 (59%),胃多重症 (81%) 和结缔组织疾病 (61%),包括大动脉扩张 (15%) 的显著流行.
结论:
- 携带SMAD4变异的携带者表现出广泛的表型,包括HTT,JPS和结合组织疾病.
- 频繁和早期的消化系统并发症需要每两年进行一次内镜查.
- 建议对肺/肝AVM和心脏/骨并发症进行系统查.
更多相关视频
09:37Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
Published on: August 15, 2019
9.7K
09:34Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
33.7K
相关概念视频
Pleiotropy
40.4K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.4K
Pedigree Analysis
84.2K
Overview
84.2K
Genomic Imprinting and Inheritance
34.4K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
34.4K
X-linked Traits
54.9K
In most mammalian species, females have two X sex chromosomes and males have an X and Y. As a result, mutations on the X chromosome in females may be masked by the presence of a normal allele on the second X. In contrast, a mutation on the X chromosome in males more often causes observable biological defects, as there is no normal X to compensate. Trait variations arising from mutations on the X chromosome are called “X-linked”.
54.9K
Multiple Allele Traits
34.2K
The Concept of Multiple Allelism
34.2K
Incomplete Dominance
22.5K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
22.5K
