Esta página ha sido traducida por una máquina. Otras páginas pueden seguir apareciendo en inglés. View in English

Una nueva variante de la región de empalme no canónica asociada con el síndrome de Gorlin: un informe de caso

  • 0Manchester Centre for Genomic Medicine, St Mary's Hospital, Manchester Foundation NHS Trust, Manchester Academic Health Sciences Centre (MAHSC), Manchester, UK.

|

|

Resumen

Este resumen es generado por máquina.

El síndrome de Gorlin, un trastorno genético, fue diagnosticado en una paciente y su padre usando análisis de ADNc. Esto confirmó una nueva variante genética, ayudando a la detección y planificación familiar.

Área De La Ciencia

  • La genética
  • Dermatología
  • En el campo de la oncología

Sus Antecedentes

  • El síndrome de Gorlin (GS) es un trastorno autosómico dominante raro.
  • Se caracteriza por carcinomas de células basales, queratocitos de mandíbula y anomalías esqueléticas.
  • Normalmente se identifican variantes patógenas en los genes PTCH1 o SUFU.

Objetivo Del Estudio

  • Para reportar un caso de síndrome de Gorlin con una nueva variante en la región germinal.
  • Para reclasificar una variante de importancia incierta utilizando pruebas moleculares.
  • Demostrar la utilidad de las pruebas genéticas para la planificación familiar y el cribado.

Principales Métodos

  • El diagnóstico clínico del síndrome de Gorlin.
  • Secuenciación de ADN de la línea germinal.
  • análisis de ADNc para evaluar el impacto de la variante en la región de empalme.

Principales Resultados

  • Se identificó una nueva variante de empalme de la línea germinal en una paciente y su padre.
  • El análisis de ADNc confirmó la patogenicidad de la variante.
  • La variante fue reclasificada de importancia incierta a patógena.

Conclusiones

  • La confirmación genética del síndrome de Gorlin es crucial para las familias afectadas.
  • El análisis del ADNc es eficaz en la reclasificación de variantes de importancia incierta.
  • El diagnóstico genético preciso facilita la planificación familiar y la detección de parientes en riesgo.

Videos de Conceptos Relacionados

Pleiotropy 01:33

41.1K

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,...

Alternative RNA Splicing 02:18

21.7K

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...

Single Nucleotide Polymorphisms-SNPs 01:05

15.8K

A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...

RNA Splicing 01:32

56.9K

Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...

Comparing Copy Number Variations and SNPs 02:26

17.9K

Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...

Genome-wide Association Studies-GWAS 01:11

14.1K

Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...