Browsing by Author "Soares, G."
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- A 26-Year Experience in Chorionic Villus Sampling Prenatal Genetic DiagnosisPublication . Jorge, P.; Mota-Freitas, M.; Santos, R.; Silva, M.; Soares, G.; Fortuna, A.Abstract: This report describes the trends of chorionic villus sampling (CVS) referred for prenatal genetic diagnosis in the past two and a half decades in a Portuguese Center. Our cohort of 491 CVS was mostly performed by the transcervical method at the 12th gestational week. Data collected within the framework of this study relate to the following: sampling method, referral reason versus abnormality and incidence of procedure-related pregnancy loss, that declined to about 0.5% over the last 15 years. The year 2000 represented a change in referral reasons for chorionic tissue collection, shifting from almost exclusively for cytogenetic testing to an increasing number of molecular tests for monogenic disorders. Herein, success rates as well as cytogenetic and/or molecular DNA results are presented. These latter include not only tests for several monogenic disorders, but also aneuploidy and maternal cell contamination screening. This retrospective analysis reiterates that CVS is a safe and reliable first trimester technique for prenatal diagnosis in high genetic risk pregnancies.
- Anomalia de Poland e…Publication . Araújo, A.; Maia, I.; Soares, G.; Maciel, I.; Sampaio, V.; Lima, M. R.RESUMO A Neurofibromatose do tipo 1 (NF1; MIM 162200) é o síndrome neurocutâneo mais frequente. O diagnóstico é clínico, baseado em critérios estabelecidos desde 1987. O Síndrome de Noonan (SN; MIM 605275) caracteriza-se por fácies peculiar, baixa estatura e cardiopatia congénita. A hereditariedade é autossómica dominante e mutações no gene PTPN11 foram encontradas em cerca de 50% dos casos. A associação do fenótipo Noonan com a Neurofibromatose do tipo 1 foi descrita pela primeira vez por Allanson et al em 1985. Os autores descrevem o caso clínico de uma criança do sexo feminino, actualmente com 4 anos de idade, enviada à consulta de Pediatria por apresentar uma anomalia de Poland. O exame físico e história familiar desta criança permitiram fazer o diagnóstico de neurofibromatose do tipo 1 com fenótipo de Noonan. Foi também possível identificar mais dois casos de Neurofibromatose do tipo 1 em dois familiares directos.
- Arx-related disorders: several distinct phenotypes, one mutated genePublication . Sá, M.J.; Soares, G.; Silva, J.; Fortuna, A.; Santos, R.; Marques, I.; Jorge, P.
- Classical fragile-X phenotype in a female infant disclosed by comprehensive genomic studiesPublication . Jorge, P.; Garcia, E.; Gonçalves, A.; Marques, I.; Maia, N.; Rodrigues, B.; Santos, H.; Fonseca, J.; Soares, G.; Correia, C.; Reis-Lima, M.; Cirigliano, V.; Santos, R.BACKGROUND: We describe a female infant with Fragile-X syndrome, with a fully expanded FMR1 allele and preferential inactivation of the homologous X-chromosome carrying a de novo deletion. This unusual and rare case demonstrates the importance of a detailed genomic approach, the absence of which could be misguiding, and calls for reflection on the current clinical and diagnostic workup for developmental disabilities. CASE PRESENTATION: We present a female infant, referred for genetic testing due to psychomotor developmental delay without specific dysmorphic features or relevant family history. FMR1 mutation screening revealed a methylated full mutation and a normal but inactive FMR1 allele, which led to further investigation. Complete skewing of X-chromosome inactivation towards the paternally-inherited normal-sized FMR1 allele was found. No pathogenic variants were identified in the XIST promoter. Microarray analysis revealed a 439 kb deletion at Xq28, in a region known to be associated with extreme skewing of X-chromosome inactivation. CONCLUSIONS: Overall results enable us to conclude that the developmental delay is the cumulative result of a methylated FMR1 full mutation on the active X-chromosome and the inactivation of the other homologue carrying the de novo 439 kb deletion. Our findings should be taken into consideration in future guidelines for the diagnostic workup on the diagnosis of intellectual disabilities, particularly in female infant cases.
- Desenvolvimento neurocognitivo em 99 adolescentes e adultos com fenilcetonúria: ganhos em saúde resultantes de uma abordagem multidisciplinarPublication . Carmona, C.M.; Almeida, M.F.; Rocha, J.C.; Soares, G.; Fortuna, A.
- Dietary treatment in Phenylketonuria does not lead to increased risk of obesity or metabolic syndromePublication . Rocha, J.C.; van Spronsen, F.; Almeida, M.F.; Soares, G.; Quelhas, D.; Ramos, E.; Guimarães, J.T.; Borges, N.
- Genes, Crianças e PediatrasPublication . Soares, G.; Dias, C.; Martins, M.; Fortuna, A.; Reis-Lima, M.; Álvares, S.
- Genes, Crianças e Pediatras 2005 IIPublication . Dias, C.; Martins, M.; Rocha, M.; Soares, G.; Pinto-Basto, J.; Gonçalves, S.; Carrilho, I.; Fortuna, A.; Reis-Lima, M.
- Genes, Crianças e Pediatras IIIPublication . Dias, C.; Soares, G.; Pinto-Basto, J.; Fortuna, A.; Martins, M.; Reis-Lima, M.; Fonseca, F.
- Genes, Crianças e Pediatras IVPublication . Soares, G.; Pimentel, I.; Dias, C.; Pinto-Basto, J.; Martins, M.; Fortuna, A.; Reis-Lima, M.
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