Video Experimental Relacionado
Updated: Feb 12, 2026

08:46
Genetic Variant Detection in the CALR gene using High Resolution Melting Analysis
Published on: August 26, 2020
5.4K
Análisis de las variantes genéticas STAG1 identificadas en un paciente con discapacidad intelectual y retraso del
1Obstetrics Department, Quzhou Maternity and Child Health Care Hospital of Zhejiang Province, Quzhou 32400, China.
Yi chuan = Hereditas
|February 11, 2026
Resumen
Se identificó una nueva variante patógena en el gen STAG1 en un niño con retraso en el desarrollo. Esta mutación genética probablemente causa discapacidad intelectual a través de la haploinsufficiencia, afectando la producción de la proteína STAG1.
Área de la Ciencia:
- Genética La genética.
- Biología del desarrollo Biología del desarrollo.
- La medicina molecular es una medicina molecular.
Sus antecedentes:
- El trastorno de desarrollo intelectual autosómico dominante (tipo 47) está relacionado con variantes heterocigotas en el gen STAG1.
- Las características clínicas incluyen discapacidad intelectual, retrasos en el desarrollo y epilepsia.
Objetivo del estudio:
- Para identificar la causa genética del retraso del desarrollo psicomotor en un niño de 3 años.
- Para investigar el mecanismo patógeno de la variante genética STAG1 identificada.
- Para revisar y resumir los fenotipos clínicos asociados con las variantes del gen STAG1.
Principales métodos:
- Se realizó secuenciación del exoma entero (WES) en el paciente.
- Las variantes genéticas candidatas se confirmaron utilizando la secuenciación de Sanger.
- Se realizaron estudios in vitro con células HEK293T transfectadas para evaluar el impacto funcional de la variante.
Principales resultados:
- Se identificó una variante patógena de novo, c.500dup (p.Gly168TrpfsTer13), en el gen STAG1.
- La variante fue clasificada como patógena de acuerdo con las directrices de ACMG.
- Los estudios in vitro mostraron una reducción significativa en la expresión del ARNm mutante, deteriorando la producción funcional de la proteína STAG1.
Conclusiones:
- La variante del gen STAG1 identificada es patógena y probablemente causa trastornos del desarrollo intelectual.
- El mecanismo patógeno puede implicar la haploinsuficiencia del gen STAG1.
- Los fenotipos clínicos asociados con las variantes de STAG1 exhiben una variabilidad significativa.
Palabras clave:
retraso en el habla.la insuficiencia de haploína.discapacidad intelectual discapacidad intelectual.secuenciación de exoma entero.Más Videos Relacionados
Videos de Conceptos Relacionados
Intellectual Disability
777
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...
777
Learning Disabilities
634
Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
Dyslexia
Dyslexia is a...
634
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
Gene Flow
38.0K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
38.0K
Gene Families
10.0K
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
10.0K
Organization of Genes
73.7K
Overview
73.7K

