Track topics on Twitter Track topics that are important to you
Abstract Background The most prevalent type of structural variation in the human genome is represented by copy number variations that can affect transcription levels, sequence, structure and function of genes. Method In the present study, we used the multiplex ligation-dependent probe amplification (MLPA) technique and quantitative PCR for the detection of copy number variation in 132 intellectually disabled male patients with normal karyotypes and negative fragile-X-testing. Results Ten of these patients (7.6%) showed copy number variation in the subtelomeric regions, including deletions and duplications. Discussion Duplications of the SECTM1 gene, located at 17q25.3, and of the FLJ22115 gene, located at 20p13, could be associated with phenotype alterations. This study highlights the relevance in the aetiology of intellectual disability of subtelomeric rearrangements that can be screened by MLPA and other molecular techniques.
Morphology and Genetics Department, Universidade Federal de São Paulo, São Paulo, SP, Brazil.
This article was published in the following journal.
Name: Journal of intellectual disability research : JIDR
This study was performed on miscarriage samples for chromosome analysis to detect copy number variations (CNVs) related to subtelomeric regions, and with these results we aimed to adapt multiplex liga...
Intellectual disability (ID) and global development delay (GDD) are caused by genetic factors such as subtelomeric rearrangements (SR) in 25 % of patients. There are several assays currently availabl...
Alterations in mitochondrial DNA (mtDNA) copy number are observed in human gliomas. However, whether variations in mtDNA copy number in whole blood play any role in glioma carcinogenesis is still larg...
Genomic rearrangements involving dosage change of genes have been implicated in a range of developmental disorders. Increasing evidences suggest copy number variations (CNVs) of autism susceptibility ...
To explore the association of β-defensin gene copy number variations (CNVs) with Ankylosing Spondylitis (AS).
The purpose of this study is to describe DNA copy number variations and gene expression profiles of bone marrow plasma cells of monoclonal gammopathy of undetermined significance (MGUS) an...
To identify mutations, changes in DNA copy number, structural rearrangements, or altered microRNA/mRNA expression that are important for the initiation, progression, or treatment response ...
Relatively few health promotion and disease prevention programs have included or targeted people with disabilities, and even fewer have focused on individuals with intellectual disabilitie...
In this, here we want to present a new method for analysis variation in gene copy number for patients and carriers of SMA. This is a relative quantitation method and, therefore, relies on ...
This protocol (in patients aged 65 and over suffering from previously untreated multiple myeloma), represents the first worldwide, pharmacogenomic study on this scale in terms of the numbe...
Stretches of genomic DNA that exist in different multiples between individuals. Many copy number variations have been associated with susceptibility or resistance to disease.
Compositions written by hand, as one written before the invention or adoption of printing. A manuscript may also refer to a handwritten copy of an ancient author. A manuscript may be handwritten or typewritten as distinguished from a printed copy, especially the copy of a writer's work from which printed copies are made. (Webster, 3d ed)
A selective increase in the number of copies of a gene coding for a specific protein without a proportional increase in other genes. It occurs naturally via the excision of a copy of the repeating sequence from the chromosome and its extrachromosomal replication in a plasmid, or via the production of an RNA transcript of the entire repeating sequence of ribosomal RNA followed by the reverse transcription of the molecule to produce an additional copy of the original DNA sequence. Laboratory techniques have been introduced for inducing disproportional replication by unequal crossing over, uptake of DNA from lysed cells, or generation of extrachromosomal sequences from rolling circle replication.
A copy number variation that results in reduced GENE DOSAGE due to any loss-of-function mutation. The loss of heterozygosity is associated with abnormal phenotypes or diseased states because the remaining gene is insufficient.
A technique for identifying individuals of a species that is based on the uniqueness of their DNA sequence. Uniqueness is determined by identifying which combination of allelic variations occur in the individual at a statistically relevant number of different loci. In forensic studies, RESTRICTION FRAGMENT LENGTH POLYMORPHISM of multiple, highly polymorphic VNTR LOCI or MICROSATELLITE REPEAT loci are analyzed. The number of loci used for the profile depends on the ALLELE FREQUENCY in the population.
Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...