过度估计病原性变体在异形性高阴性高阴性和卡尔曼综合征的异形性高阴性和卡尔曼综合征
Lindsey Grater1, Zoe Hawkins2, Afif Ben Mahmoud3
1Medical College of Georgia at Augusta University, 1120 15th Street, Augusta, GA, 30912.
概括
卡尔曼综合征 (KS) 和异常性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形性形形形性形形形形形 使用ACMG指南进行标准化解释对于在这些罕见的生殖障碍中准确分类变异至关重要.
科学领域:
- 遗传学 是一个遗传学.
- 内分泌学 在内分泌学.
- 生殖医学 生殖医学
背景情况:
- 异形性性性性 (IHH) 和卡尔曼综合征 (KS) 是一种罕见的遗传疾病,其特点是缺席或延迟的青春期和不孕症,原因是性释激素缺乏.
- 超过50个基因与IHH/KS有关,但许多报告的变体缺乏强大的功能验证,可能导致膨胀的致病性估计.
研究的目的:
- 通过使用美国医学遗传学与基因组学学院 (ACMG) 标准化的标准,重新评估已建立的IHH/KS基因中报告的变异的致病性.
- 评估与IHH和KS相关的变体的致病性估计过高的程度.
主要方法:
- 一项文献审查确定了27个已确立的IHH/KS基因中的933个变体,来自273个出版物.
- 根据2015年ACMG指南,使用VarSome和ClinVar重新分类变种.
- 出版物被归类为比较分析指南之前或之后的出版物.
主要成果:
- VarSome将47.6%的变异重新分类为致病性/可能致病性 (P/LP),26.7%为不确定的意义的变异 (VUS),25.7%为良性/可能良性 (B/LB).
- ClinVar仅为47.3%的变体提供了分类,其中<20%被指定为P/LP.
- 在VarSome中的P/LP和VUS分类中,很大一部分是误解变体 (分别为37.2%和84.3%).
结论:
- 在IHH/KS基因中,以前报告的大量变异可能被错误分类,其中不到一半被VarSome认为是P/LP.
- 克林瓦尔有限的P/LP分类和高比例的VUS突出了变体解释中的不一致性.
- 在IHH/KS遗传研究中,对ACMG指导方针的标准化应用以及支持性证据对于准确确定变异病原性和避免过度估计至关重要.
相关概念视频
Histone Variants at the Centromere
5.1K
Histone variants are the histone proteins with structural and sequence variations. These variants may be regarded as “mutant” forms that replace their canonical histone counterparts in the nucleosomes. Specific post-translational modifications on the histone variants enable further chromatin complexity and regulate tissue-specific gene expression. The most common histone variants are from histone H2A, H2B, and linker histone H1 families. However, several variants of histone H3...
5.1K
Nephrotic Syndrome I : Introduction
636
Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
636
Defenses Against Pathogens and Herbivores
29.6K
Plants present a rich source of nutrients for many organisms, making it a target for herbivores and infectious agents. Plants, though lacking a proper immune system, have developed an array of constitutive and inducible defenses to fend off these attacks.
29.6K
Defense Against Bacterial Pathogens
2.8K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
2.8K
Acute Coronary Syndrome I: Introduction
994
Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
994
Irritable Bowel Syndrome I: Introduction
1.0K
Irritable Bowel Syndrome (IBS) is characterized by functional disturbances in the gastrointestinal system, presenting a cluster of symptoms without evident structural or biochemical abnormalities. It primarily affects the large intestine and may cause abdominal pain, bloating, excessive gas, diarrhea, constipation, or both.
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
IBS is a chronic condition that can persist over a long period or recur frequently.
The pathogenesis of IBS involves a complex interplay of the following factors:
Altered...
1.0K


