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Leveling the Playing Field in Homozygosity Mapping Using Map Distances
Li, Yi1; Cagirici, Halise Busra2; Horpaopan, Sukanya3; Ott, Jurg4,5; Imai, Atsuko6; Majewski, Jacek7,8; Lathrop, Mark7,8
2015-09-01
Source PublicationANNALS OF HUMAN GENETICS
ISSN0003-4800
SubtypeArticle
Volume79Issue:5Pages:366-372
AbstractStudies of linkage disequilibrium (LD) and its variation in the genome are of central importance for understanding evolutionary history, population structure, and selective sweeps. Extreme forms of the latter may result in runs of homozygosity (ROH). In human gene mapping, long ROHs are the basis for homozygosity mapping (HM) with length measured in terms of Mb (10(6) base pairs physical distance). LD varies greatly over the human genome so that long ROHs tend to occur preferentially in regions of high LD and ROHs of the same length in different regions are not strictly comparable. Thus, in human gene mapping, LD appears as a confounder that needs to be taken into account in the interpretation of ROHs. The effect of varying LD can be mitigated by working on a scale of centimorgans (cM, genetic distance) instead of Mb. We demonstrate this effect for HapMap 3 data on chromosome 19 and show examples with different ROH lengths depending on whether physical or genetic lengths are used. These results suggest that HM should preferably be done on genetic rather than physical distances.
KeywordHomozygosity mapping linkage disequilibrium recombination
Indexed BySCI
Language英语
WOS IDWOS:000360092800007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/15234
Collection健康与遗传心理学研究室
Affiliation1.Shanxi Univ Finance & Econ, Sch Stat, Taiyuan, Shanxi, Peoples R China
2.Koc Univ, Dept Biomed Sci & Engn, Istanbul, Turkey
3.Naresuan Univ, Fac Med Sci, Dept Anat, Phitsanulok 65000, Thailand
4.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China
5.Rockefeller Univ, Lab Stat Genet, New York, NY 10021 USA
6.Osaka Univ, Grad Sch Med, Dept Cardiovasc Med, Osaka, Japan
7.McGill Univ, Montreal, PQ, Canada
8.Genome Quebec Innovat Ctr, Montreal, PQ, Canada
Recommended Citation
GB/T 7714
Li, Yi,Cagirici, Halise Busra,Horpaopan, Sukanya,et al. Leveling the Playing Field in Homozygosity Mapping Using Map Distances[J]. ANNALS OF HUMAN GENETICS,2015,79(5):366-372.
APA Li, Yi.,Cagirici, Halise Busra.,Horpaopan, Sukanya.,Ott, Jurg.,Imai, Atsuko.,...&Lathrop, Mark.(2015).Leveling the Playing Field in Homozygosity Mapping Using Map Distances.ANNALS OF HUMAN GENETICS,79(5),366-372.
MLA Li, Yi,et al."Leveling the Playing Field in Homozygosity Mapping Using Map Distances".ANNALS OF HUMAN GENETICS 79.5(2015):366-372.
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