Mechanisms for Nonrecurrent Genomic Rearrangements Associated with CMT1A or HNPP: Rare CNVs as a Cause for Missing Heritability
نویسندگان
چکیده
منابع مشابه
A DNA Replication Mechanism for Generating Nonrecurrent Rearrangements Associated with Genomic Disorders
The prevailing mechanism for recurrent and some nonrecurrent rearrangements causing genomic disorders is nonallelic homologous recombination (NAHR) between region-specific low-copy repeats (LCRs). For other nonrecurrent rearrangements, nonhomologous end joining (NHEJ) is implicated. Pelizaeus-Merzbacher disease (PMD) is an X-linked dysmyelinating disorder caused most frequently (60%-70%) by non...
متن کاملMechanisms for human genomic rearrangements
Genomic rearrangements describe gross DNA changes of the size ranging from a couple of hundred base pairs, the size of an average exon, to megabases (Mb). When greater than 3 to 5 Mb, such changes are usually visible microscopically by chromosome studies. Human diseases that result from genomic rearrangements have been called genomic disorders. Three major mechanisms have been proposed for geno...
متن کاملA Family Harboring CMT1A Duplication and HNPP Deletion
Charcot-Marie-Tooth disease type 1A (CMT1A) is associated with duplication of chromosome 17p11.2-p12, whereas hereditary neuropathy with liability to pressure palsies (HNPP), which is an autosomal dominant neuropathy showing characteristics of recurrent pressure palsies, is associated with 17p11.2-p12 deletion. An altered gene dosage of PMP22 is believed to the main cause underlying the CMT1A a...
متن کاملSearching for missing heritability: designing rare variant association studies.
Genetic studies have revealed thousands of loci predisposing to hundreds of human diseases and traits, revealing important biological pathways and defining novel therapeutic hypotheses. However, the genes discovered to date typically explain less than half of the apparent heritability. Because efforts have largely focused on common genetic variants, one hypothesis is that much of the missing he...
متن کاملHomologous DNA exchanges in humans can be explained by the yeast double-strand break repair model: a study of 17p11.2 rearrangements associated with CMT1A and HNPP.
Rearrangements in 17p11.2, responsible for the 1.5 Mb duplications and deletions associated, respectively, with autosomal dominant Charcot-Marie-Tooth type 1A disease (CMT1A) and hereditary neuropathy with liability to pressure palsies (HNPP) are a suitable model for studying human recombination. Rearrangements in 17p11.2 are caused by unequal crossing-over between two homologous 24 kb sequence...
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ژورنال
عنوان ژورنال: The American Journal of Human Genetics
سال: 2010
ISSN: 0002-9297
DOI: 10.1016/j.ajhg.2010.05.001