与CRTAP相关的骨质发生不完美:CRTAP中的临床变异性和潜在的创始变异
André M Travessa1,2,3, José Carlos Romeu4, Teresa Mirco5
1Department of Medical Genetics and ERN-BOND, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal.
Molecular syndromology
|October 9, 2025
概括
与CRTAP相关的骨质形成不完美症 (OI) 呈现出显著的临床变异性,并发现了新的变异. 这种罕见的遗传性疾病强调了对CRTAP的进一步研究的需要.
科学领域:
- 遗传学 是一个遗传学.
- 儿科 儿科 儿科
- 整形外科 整形外科 整形外科
背景情况:
- 骨质变生不完美 (OI) 包含一组由骨脆弱性为特征的遗传疾病.
- 与CRTAP相关的骨质发生不完美 (OI),特别是OI型VII,是由CRTAP基因中的双变异引起的.
- 这种情况已在大约30例病例中报告,严重程度范围广泛.
研究的目的:
- 描述与CRTAP相关的OI患者的临床和分子发现.
- 扩大对这种罕见疾病的表型变异性和遗传谱的理解.
- 在特定人群中调查潜在的创始人效应.
主要方法:
- 在两个成年患者和一个胎儿中,对CRTAP变异的分子确认.
- 详细的临床表型,包括骨和骨外表现.
- 变异分析和人口遗传学的考虑.
主要成果:
- 现型变异性从中度 (OI类型IV) 到严重 (OI类型III),具有不同的骨折模式.
- 发现了新的CRTAP变体,扩大了已知的突变格局.
- 一名患者出现了高近视和视网膜脱落,此前在OI型VII中没有报告.
- 在佛得角人口中,一种特定的CRTAP变异的潜在高载体频率被建议.
结论:
- 与CRTAP相关的OI显示出显著的临床异质性,可能存在产前和产后发作.
- 该研究强调了在OI的遗传诊断中考虑CRTAP的重要性.
- 需要进一步研究CRTAP在骨外组织中的作用以及特定人群的创始人效应.
相关概念视频
01:31Translation
155.3K
Lesson: Translation
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of...
155.3K
01:31Translation
17.5K
Translation is the process of synthesizing proteins from the genetic information carried by messenger RNA (mRNA). Following transcription, it constitutes the final step in the expression of genes. This process is carried out by ribosomes, complexes of protein and specialized RNA molecules. Ribosomes, transfer RNA (tRNA), and other proteins produce a chain of amino acids—the polypeptide—as the end product of translation.
Translation Produces the Building Blocks of Life
Proteins are...
Translation Produces the Building Blocks of Life
Proteins are...
17.5K
01:30Point and Frameshift Mutations
844
Point mutations are genetic alterations involving the change of a single nucleotide base pair in DNA. Depending on how the alteration affects protein synthesis, they can lead to various consequences.Point mutations fall into the following types:Silent mutations occur when a nucleotide change does not alter the amino acid sequence due to the redundancy of the genetic code. For instance, changing ACC to ACA still encodes threonine, leaving the protein function unaffected. This occurs because...
844
01:43Incomplete Dominance
29.6K
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.
29.6K
02:18Alternative RNA Splicing
24.7K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
24.7K
02:53CRISPR and crRNAs
18.7K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
18.7K