Microdeletion Syndromes
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Congenital Heart Disease Revealing Familial 22q11 Deletion Syndrome
Abstract Congenital heart defects are the most common birth defects and the leading cause of mortality in the first year of life. It is well known that the 22q11 deletion syndrome (22q11DS) is the most common microdeletion syndrome in humans and that congenial heart diseases (CHDs) are one of the most common phenotypic manifestations. However, it should be n
Int. J. Cardiovasc. Sci.. Publicado em: 2020-07
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2. Information and Diagnosis Networks – tools to improve diagnosis and treatment for patients with rare genetic diseases
Abstract Brazil is a country of continental dimensions and most genetic services are concentrated in the Southeast and South, including the Medical Genetics Service of the Hospital de Clínicas de Porto Alegre (MGS/HCPA). As many areas on the country do not have adequate medical genetics support, networks were designed to extend the service of the MGS/HCPA r
Genet. Mol. Biol.. Publicado em: 10/06/2019
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3. 1p13.2 deletion displays clinical features overlapping Noonan syndrome, likely related to NRAS gene haploinsufficiency
Abstract Deletion-induced hemizygosity may unmask deleterious autosomal recessive variants and be a cause of the phenotypic variability observed in microdeletion syndromes. We performed complete exome sequencing (WES) analysis to examine this possibility in a patient with 1p13.2 microdeletion. Since the patient displayed clinical features suggestive of Noona
Genet. Mol. Biol.. Publicado em: 04/08/2016
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4. New microdeletion and microduplication syndromes: a comprehensive review
Several new microdeletion and microduplication syndromes are emerging as disorders that have been proven to cause multisystem pathologies frequently associated with intellectual disability (ID), multiple congenital anomalies (MCA), autistic spectrum disorders (ASD) and other phenotypic findings. In this paper, we review the "new" and emergent microdeletion a
Genet. Mol. Biol.. Publicado em: 2014
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5. Human molecular cytogenetics: from cells to nucleotides
The field of cytogenetics has focused on studying the number, structure, function and origin of chromosomal abnormalities and the evolution of chromosomes. The development of fluorescent molecules that either directly or via an intermediate molecule bind to DNA has led to the development of fluorescent in situ hybridization (FISH), a technology linking cytog
Genet. Mol. Biol.. Publicado em: 2014
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6. Pesquisa de síndromes de microdeleção em pacientes com deficiência intelectual por meio da técnica de MLPA - Amplificação de Múltiplas Sondas Dependentes de Ligação / Pesquisa de síndromes de microdeleção em pacientes com deficiência intelectual por meio da técnica de MLPA Amplificação de Múltiplas Sondas dependentes de Ligação
Deficiência intelectual (DI) é sinal manifesto de mais de 2.000 condições clínicas diferentes e está presente em 5% da população. Por se tratar de um grupo heterogêneo de condições clínicas, com fatores causais distintos e simultaneamente envolvidos, cerca de 50% dos pacientes com DI não têm sua etiologia definida. Entre as possíveis causas de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2012
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7. Pleiotropy in microdeletion syndromes: neurologic and spermatogenic abnormalities in mice homozygous for the p6H deletion are likely due to dysfunction of a single gene.
Variability and complexity of phenotypes observed in microdeletion syndromes can be due to deletion of a single gene whose product participates in several aspects of development or can be due to the deletion of a number of tightly linked genes, each adding its own effect to the syndrome. The p6H deletion in mouse chromosome 7 presents a good model with which
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8. A Recessive Contiguous Gene Deletion of Chromosome 2p16 Associated with Cystinuria and a Mitochondrial Disease
Deletions ranging from 100 Kb to 1 Mb—too small to be detected under the microscope—may still involve dozens of genes, thus causing microdeletion syndromes. The vast majority of these syndromes are caused by haploinsufficiency of one or several genes and are transmitted as dominant traits. We identified seven patients originating from an extended family
The American Society of Human Genetics.
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9. Recurrence risk figures for isolated tetralogy of Fallot after screening for 22q11 microdeletion.
Isolated tetralogy of Fallot (TF) has a multifactorial mode of inheritance in most cases, and recurrence risk rates of 2.5-3% have been attributed to first degree relatives of an affected child. In a subgroup of patients with a strong family history, the transmission of a monogenic trait has been suspected. Microdeletion 22q11 (del(22q11)) can cause TF in th
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10. Conotruncal heart defect/microphthalmia syndrome: delineation of an autosomal recessive syndrome.
We report on three sibs born to healthy parents, one livebirth and two terminated pregnancies, presenting with a malformation complex characterised by conotruncal heart defect (CTHD), microphthalmia, genital anomalies, and facial dysmorphism. The recurrence of the association of CTHD, particularly truncus arteriosus, and microphthalmia in sibs has previously
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11. An intrachromosomal insertion causing 5q22 deletion and familial adenomatous polyposis coli in two generations.
We report familial adenomatous polyposis coli (FAPC) with epidermoid cysts, osteomata, and areas of congenital hypertrophy of the retinal pigment epithelium (CHRPEs) in a male patient and his maternal aunt, both of whom suffered a mild to moderate degree of mental handicap. Both had an interstitial deletion of the long arm of chromosome 5 (del(5)(q22q23.2)).
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12. Microdeletion syndromes, balanced translocations, and gene mapping.
High resolution prometaphase chromosome banding has allowed the detection of discrete chromosome aberrations which escaped earlier metaphase examinations. Consistent tiny deletions have been detected in some well established malformation syndromes: an interstitial deletion in 15q11/12 in the majority of patients with the Prader-Willi syndrome and in a minori