11 documents found, page 1 of 2
Genetic modulation of RNA splicing rescues BRCA2 function in mutant cells
Lima, Beatriz Anjo; Pais, Ana Carolina; Dupont, Juliette; Dias, Patrícia; Custódio, Noélia; Sousa, Ana Berta; Carmo-Fonseca, Maria; Carvalho, CéliaVariants in the hereditary cancer-associated BRCA1 and BRCA2 genes can alter RNA splicing, producing transcripts that encode internally truncated yet potentially functional proteins. However, few studies have quantitatively analyzed variant-specific splicing isoforms. Here, we investigated cells heterozygous and homozygous for the BRCA2:c.681+5G>C variant. Using droplet digital RT-PCR, we identified two variant...
Coarse face, hypotonia, and neurodevelopmental regression
Miranda, Ana Margalha; Ezequiel, Marta; Luís, Catarina; Dupont, Juliette; Gaspar, Paulo; Vilarinho, Laura; Janeiro, Patrícia; Gaspar, AnaInborn errors of metabolism are a heterogeneous class of multisystemic diseases which, although individually rare, are collectively quite common. Central nervous system is usually affected. The authors report the case of a five-month-old girl, daughter of non-consanguineous parents, born after an unremarkable full-term pregnancy and delivery. Hypotonia and neurodevelopmental regression were noted from the age o...
Coarse face, hypotonia, and neurodevelopmental regression
Miranda, Ana Margalha; Ezequiel, Marta; Luís, Catarina; Dupont, Juliette; Gaspar, Paulo; Vilarinho, Laura; Janeiro, Patrícia; Gaspar, AnaInborn errors of metabolism are a heterogeneous class of multisystemic diseases which, although individually rare, are collectively quite common. Central nervous system is usually affected. The authors report the case of a five-month-old girl, daughter of non-consanguineous parents, born after an unremarkable full-term pregnancy and delivery. Hypotonia and neurodevelopmental regression were noted from the age o...
Genomic imbalances defining novel intellectual disability associated loci
Lopes, Fátima; Torres, Fátima; Soares, Gabriela; Barbosa, Mafalda; Silva, João; Duque, Frederico; Rocha, Miguel; Sá, Joaquim; Oliveira, GuiomarBackground: High resolution genome-wide copy number analysis, routinely used in clinical diagnosis for several years, retrieves new and extremely rare copy number variations (CNVs) that provide novel candidate genes contributing to disease etiology. The aim of this work was to identify novel genetic causes of neurodevelopmental disease, inferred from CNVs detected by array comparative hybridization (aCGH), in a...
Targeted next generation sequencing identifies novel pathogenic variants and pr...
Nogueira, Célia; Silva, Lisbeth; Pereira, Cristina; Vieira, Luís; Leão Teles, Elisa; Rodrigues, Esmeralda; Campos, Teresa; Janeiro, PatríciaMitochondrial diseases (MD) are a group of rare inherited disorders, characterized by phenotypic heterogeneity, with hitherto no effective therapeutic options. The aim of this study was to develop a next generation sequencing (NGS) strategy, by using a custom gene panel and whole mitochondrial genome, to identify the disease causing pathogenic variants in 146 patients suspicious of MD. The molecular analysis of...
Koolen-de Vries syndrome – National Case Series with clinical and molecular cha...
Soares, Marta P.; Rodrigues, Márcia; Dupont, Juliette; Medeira, Ana; Freixo, João; Nunes, Sofia; Cordeiro, Isabel; Travessa, André; Soares, GabrielaIntroduction: Koolen-de Vries Syndrome (KdVS) is a rare genetic condition, caused by a 17q21.31 microdeletion, or a pathogenic variant in KANSL1 gene. The clinical picture includes developmental delay (DD)/intellectual disability (ID) with expressive language particularly impaired, dysmorphisms, neonatal hypotonia, and friendly behaviour. Aim: To characterize at the molecular and clinical levels all patients in...
Genomic imbalances defining novel intellectual disability associated loci
Lopes, Fátima Daniela Teixeira; Torres, Fátima; Soares, Gabriela; Barbosa, Mafalda; Silva, João; Duque, Frederico; Rocha, Miguel; Sá, JoaquimHigh resolution genome-wide copy number analysis, routinely used in clinical diagnosis for several years, retrieves new and extremely rare copy number variations (CNVs) that provide novel candidate genes contributing to disease etiology. The aim of this work was to identify novel genetic causes of neurodevelopmental disease, inferred from CNVs detected by array comparative hybridization (aCGH), in a cohort of 3...
Genomic imbalances defining novel intellectual disability associated loci
Lopes, Fátima; Torres, Fátima; Soares, Gabriela; Barbosa, Mafalda; Silva, João; Duque, Frederico; Rocha, Miguel; Sá, Joaquim; Oliveira, GuiomarBackground: High resolution genome-wide copy number analysis, routinely used in clinical diagnosis for several years, retrieves new and extremely rare copy number variations (CNVs) that provide novel candidate genes contributing to disease etiology. The aim of this work was to identify novel genetic causes of neurodevelopmental disease, inferred from CNVs detected by array comparative hybridization (aCGH), in a...
Mitochondrial disorders: insights into diagnosis and management in the new era ...
Nogueira, Célia; Vilarinho, Laura; Pereira, Cristina; Silva, Lisbeth; Vieira, Luís; Leão Teles, Elisa; Rodrigues, Esmeralda; Campos, TeresaObjectives: The overall aim of our research project was to develop a Next Generation Sequencing strategy to identify nuclear disease causing-mutations in patients suspicious of mitochondrial disorders but without molecular etiology.
Diagnóstico das Doenças Mitocondriais por Sequenciação de Nova Geração
Nogueira, Célia; Pereira, Cristina; Silva, Lisbeth; Rodrigues, Esmeralda; Janeiro, Patricia; Sequeira, Sílvia; Santos, Helena; Martins, EsmeraldaIntrodução e objetivos: As doenças mitocondriais constituem um importante grupo de doenças metabólicas de expressão clínica heterogénea, para as quais não existe uma terapia eficaz. Estas patologias podem ser causadas por defeitos genéticos quer no genoma mitocondrial, quer no nuclear. A sequenciação de nova geração (NGS) revolucionou o diagnóstico molecular destas doenças, uma vez que tem capacidade de gerar u...