Abstract:
:Phenotypes are rarely consistent across genetic backgrounds and environments, but instead vary in many ways depending on allelic variants, unlinked genes, epigenetic factors, and environmental exposures. In the extreme, individuals carrying the same causal DNA sequence variant but on different backgrounds can be classified as having distinct conditions. Similarly, some individuals that carry disease alleles are nevertheless healthy despite affected family members in the same environment. These genetic background effects often result from the action of so-called "modifier genes" that modulate the phenotypic manifestation of target genes in an epistatic manner. While complicating the prospects for gene discovery and the feasibility of mechanistic studies, such effects are opportunities to gain a deeper understanding of gene interaction networks that provide organismal form and function as well as resilience to perturbation. Here, we review the principles of modifier genetics and assess progress in studies of modifier genes and their targets in both simple and complex traits. We propose that modifier effects emerge from gene interaction networks whose structure and function vary with genetic background and argue that these effects can be exploited as safe and effective ways to prevent, stabilize, and reverse disease and dysfunction.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Riordan JD,Nadeau JHdoi
10.1016/j.ajhg.2017.06.004subject
Has Abstractpub_date
2017-08-03 00:00:00pages
177-191issue
2eissn
0002-9297issn
1537-6605pii
S0002-9297(17)30239-2journal_volume
101pub_type
杂志文章,评审abstract::Many individuals with abnormalities of mitochondrial respiratory chain complex III remain genetically undefined. Here, we report mutations (c.288G>T [p.Trp96Cys] and c.643C>T [p.Leu215Phe]) in CYC1, encoding the cytochrome c1 subunit of complex III, in two unrelated children presenting with recurrent episodes of ketoa...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2013.06.015
更新日期:2013-08-08 00:00:00
abstract::Although psoriasis is strongly associated with certain human leukocyte antigens (HLAs), evidence for linkage to HLA markers has been limited. The objectives of this study were (1) to provide more definitive evidence for linkage of psoriasis to HLA markers in multiplex families; (2) to compare the major HLA risk allele...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/301899
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/320605
更新日期:2001-06-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/346090
更新日期:2003-02-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/302999
更新日期:2000-08-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2009.10.019
更新日期:2009-12-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/424389
更新日期:2004-10-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/509881
更新日期:2006-12-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/302185
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journal_title:American journal of human genetics
pub_type: 杂志文章
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1990-12-01 00:00:00
abstract::Low bone mineral density (BMD) is a major risk factor for osteoporotic fracture. Studies of BMD in families and twins have shown that this trait is under strong genetic control. To identify regions of the genome that contain quantitative trait loci (QTL) for BMD, we performed independent genomewide screens, using two ...
journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/345819
更新日期:2003-01-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2016.07.019
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1996-07-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1086/323043
更新日期:2001-09-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2015.04.016
更新日期:2015-06-04 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1984-03-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1986-07-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
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journal_title:American journal of human genetics
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journal_title:American journal of human genetics
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journal_title:American journal of human genetics
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doi:
更新日期:1996-12-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
更新日期:1983-09-01 00:00:00
abstract::Model-free LOD-score methods are often employed to detect linkage between marker loci and common diseases, with samples of affected sib pairs. Although extensions of the basic one-disease-locus model have been proposed that allow separate inclusion of other types of affected relative pairs, discordant relative pairs, ...
journal_title:American journal of human genetics
pub_type: 杂志文章
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:10.1016/j.ajhg.2008.10.002
更新日期:2008-11-01 00:00:00
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journal_title:American journal of human genetics
pub_type: 杂志文章
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journal_title:American journal of human genetics
pub_type: 杂志文章
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
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journal_title:American journal of human genetics
pub_type: 杂志文章
doi:
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