- Comment in:
-
Am J Hum Genet. 2007 Aug;81(2):414-5; author reply 415.
-
Am J Hum Genet. 2007 Aug;81(2):418-20; author reply 420-1.
-
Am J Hum Genet. 2007 Nov;81(5):1111-3.
A comprehensive analysis of common copy-number variations in the human genome.
Wong KK,
deLeeuw RJ,
Dosanjh NS,
Kimm LR,
Cheng Z,
Horsman DE,
MacAulay C,
Ng RT,
Brown CJ,
Eichler EE,
Lam WL.
Department of Cancer Genetics and Developmental Biology, University of British Columbia, Vancouver, BC, Canada. kwong@bccrc.ca
Segmental copy-number variations (CNVs) in the human genome are associated with developmental disorders and susceptibility to diseases. More importantly, CNVs may represent a major genetic component of our phenotypic diversity. In this study, using a whole-genome array comparative genomic hybridization assay, we identified 3,654 autosomal segmental CNVs, 800 of which appeared at a frequency of at least 3%. Of these frequent CNVs, 77% are novel. In the 95 individuals analyzed, the two most diverse genomes differed by at least 9 Mb in size or varied by at least 266 loci in content. Approximately 68% of the 800 polymorphic regions overlap with genes, which may reflect human diversity in senses (smell, hearing, taste, and sight), rhesus phenotype, metabolism, and disease susceptibility. Intriguingly, 14 polymorphic regions harbor 21 of the known human microRNAs, raising the possibility of the contribution of microRNAs to phenotypic diversity in humans. This in-depth survey of CNVs across the human genome provides a valuable baseline for studies involving human genetics.
PMID: 17160897 [PubMed - indexed for MEDLINE]
PMCID: PMC1785303