Inverse correlation between SMN1 and SMN2 copy numbers: evidence for gene conversion from SMN2 to SMN1
نویسندگان
چکیده
منابع مشابه
A single nucleotide difference that alters splicing patterns distinguishes the SMA gene SMN1 from the copy gene SMN2.
Spinal muscular atrophy (SMA) is a recessive disorder characterized by loss of motor neurons in the spinal cord. It is caused by mutations in the telomeric survival motor neuron 1 ( SMN1 ) gene. Alterations within an almost identical copy gene, the centromeric survival motor neuron 2 ( SMN2 ) gene produce no known phenotypic effect. The exons of the two genes differ by just two nucleotides, nei...
متن کاملDetermination of SMN1 and SMN2 copy numbers in a Korean population using multiplex ligation-dependent probe amplification.
Determination of the copy number of the survival motor neuron (SMN) gene is important for detecting spinal muscular atrophy (SMA) carriers and compound heterozygous patients. Multiplex ligationdependent probe amplification (MLPA) assay is a simple and efficient technique used for detecting variations in the copy numbers of different genes. Race- and ethnicity-based variation in the SMA carrier ...
متن کاملGenetics of low spinal muscular atrophy carrier frequency in sub‐Saharan Africa
OBJECTIVE Spinal muscular atrophy (SMA) is one of the most common severe hereditary diseases of infancy and early childhood in North America, Europe, and Asia. SMA is usually caused by deletions of the survival motor neuron 1 (SMN1) gene. A closely related gene, SMN2, modifies the disease severity. SMA carriers have only 1 copy of SMN1 and are relatively common (1 in 30-50) in populations of Eu...
متن کاملColorimetric Assay for Exon 7 SMN1/SMN2 Single Nucleotide Polymorphism Using Gold Nanoprobes.
INTRODUCTION Proximal spinal muscular atrophy (SMA) is one of the most significant neurodegenerative diseases amongst the autosomal-recessive genetic disorders which is caused by the absence of protein survival of motor neuron (SMN). A critical nucleotide difference in SMN2 compared to SMN1 gene leads to an inefficient protein. Hence, homozygous lack of SMN1 provides a progressive disease. Due ...
متن کاملQuantitative analysis of SMN1 and SMN2 genes based on DHPLC: a highly efficient and reliable carrier-screening test.
Autosomal recessive spinal muscular atrophy (SMA) is a common, fatal neuromuscular disease caused by homozygous absence of the SMN1 gene in approximately 94% of patients. However, a highly homologous SMN2 gene exists in the same chromosome interval, centromeric to SMN1, and hampers detection of SMN1. We present a new, rapid, simple, and highly reliable method for detecting the SMN1 deletion/con...
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ژورنال
عنوان ژورنال: European Journal of Human Genetics
سال: 2003
ISSN: 1018-4813,1476-5438
DOI: 10.1038/sj.ejhg.5201032