RNU4-2的面孔和特征:一种新的,常见的,可识别的,但隐藏的神经发育障碍
Kristen Barbour1, Matthew N Bainbridge2, Kristen Wigby3
1Division of Genetics and Dysmorphology, Department of Pediatrics, University of California, San Diego, Rady Children's Hospital, San Diego, California.
Pediatric neurology
|October 18, 2024
概括
一个新的基因,RNU4-2,导致神经发育障碍 (NDD),但很难用标准测试来诊断. 这项研究确定了帮助早期诊断RNU4-2变异的关键特征.
科学领域:
- 遗传学 是一个遗传学.
- 神经发育障碍 神经发育障碍
- 分子生物学分子生物学
背景情况:
- RNU4-2是一种新发现的与神经发育障碍 (NDD) 相关的非编码基因.
- 目前的诊断方法,如外基因组测序,往往无法检测非编码变体,阻碍了RNU4-2诊断.
- 成千上万未被诊断的NDD儿童可能有RNU4-2变体,需要改进的诊断工具.
研究的目的:
- 对具有RNU4-2基因变异的个体进行深度表型化.
- 为了确定关键的临床特征,暗示RNU4-2相关的NDDs.
- 引导患者选择进行能够检测非编码变异的专业遗传检测.
主要方法:
- 审查了来自6,734个人的基因组数据.
- 鉴定了5名患有复发性新发RNU4-2 (n.64_65insT) 变异的个体.
- 临床评估了四名受影响的个体,并将发现与之前的报告进行了比较.
主要成果:
- 确定了共同的临床特征,包括独特的面部形和共同的神经成像异常.
- 描述了RNU4-2表型的新方面,如纵向疾病进展和治疗反应.
- 突出了n.64_65insT变异作为与RNU4-2相关的NDDs的经常性原因.
结论:
- 识别RNU4-2表型,特别是面部特征,有助于早期诊断.
- 独特的RNU4-2特征可以指导使用专门的遗传测试 (基因组测序或向基因面板).
- 卫生系统可以通过搜索数据库来识别未被诊断的患者,寻找具有描述RNU4-2相关特征的个体.
相关概念视频
Neurulation
41.7K
Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three primary cell layers of the embryo: ectoderm, mesoderm, and endoderm. In humans, the majority of this system is formed via primary neurulation, in which the central portion of the ectoderm—originally appearing as a flat sheet of cells—folds upwards and inwards, sealing off to form a hollow neural tube. As development proceeds, the...
41.7K
Intellectual Disability
43
Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...
43
Disorders of the Nervous Tissue
1.1K
Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises...
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises...
1.1K
Autism Spectrum Disorder
69
Autism spectrum disorder (ASD) is a neurodevelopmental condition marked by persistent deficits in social communication and interaction alongside restrictive and repetitive behaviors or interests. ASD is sometimes accompanied by intellectual impairment.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
These core symptoms manifest differently among individuals, ranging from mild to severe. The disorder's complexity extends beyond its clinical presentation, encompassing a diverse range of biological, cognitive, and sociocultural influences.
69
Attention-Deficit/Hyperactivity Disorder
46
Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity. It affects approximately 5-8% of children globally, with around 60-70% of cases persisting into adulthood. ADHD has significant implications for educational attainment, social interactions, and occupational success.
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
Diagnostic Criteria and Symptoms
To diagnose ADHD, symptoms must manifest before age 12 and be evident across multiple settings....
46
REM Sleep Behavior Disorder
154
REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
RBD is significantly associated with...
RBD is significantly associated with...
154


