Abstract:
BACKGROUND:HLA-DRB1 is the strongest susceptibility gene to rheumatoid arthritis (RA). HLA-DRB1 alleles showed significant non-additive and interactive effects on susceptibility to RA in the European population, but these effects on RA susceptibility should vary between populations due to the difference in allelic distribution. Furthermore, non-additive or interactive effects on the phenotypes of RA are not fully known. We evaluated the non-additive and interactive effects of HLA-DRB1 alleles on RA susceptibility and anticitrullinated protein/peptide antibody (ACPA) levels in Japanese patients. METHODS:A total of 5581 ACPA(+) RA and 19 170 controls were genotyped or imputed for HLA-DRB1 alleles. Logistic regression analysis was performed for both allelic non-additive effects and interactive effects of allelic combinations. The significant levels were set by Bonferroni's correction. A total of 4371 ACPA(+) RA were analysed for ACPA levels. RESULTS:We obtained evidence of non-additive and interactive effects of HLA-DRB1 on ACPA(+) RA susceptibility (p=2.5×10-5 and 1.5×10-17, respectively). Multiple HLA-DRB1 alleles including HLA-DRB1*04:05, the most common susceptibility allele in the Japanese, showed significant non-additive effects (p≤0.0043). We identified multiple allelic combinations with significant interactive effects including a common combination with the European population as well as novel combinations. Additional variance of ACPA(+) RA susceptibility could be explained substantially by heterozygote dominance or interactive effects. We did not find evidence of non-additive and interactive effects on levels of ACPA. CONCLUSION:HLA allelic non-additive and interactive effects on ACPA(+) RA susceptibility were observed in the Japanese population. The allelic non-additive and interactive effects depend on allelic distribution in populations.
journal_name
J Med Genetjournal_title
Journal of medical geneticsauthors
Terao C,Okada Y,Ikari K,Kochi Y,Suzuki A,Ohmura K,Matsuo K,Taniguchi A,Kubo M,Raychaudhuri S,Yamamoto K,Yamanaka H,Kamatani Y,Mimori T,Matsuda Fdoi
10.1136/jmedgenet-2017-104779subject
Has Abstractpub_date
2017-12-01 00:00:00pages
853-858issue
12eissn
0022-2593issn
1468-6244pii
jmedgenet-2017-104779journal_volume
54pub_type
杂志文章abstract::A method is presented of calculating recurrence risks at a disease locus where there is information from flanking marker loci. This method uses output from the computer programme LIPED. Information from carrier detection tests and mutation at the disease locus can be taken into account in certain pedigrees. ...
journal_title:Journal of medical genetics
pub_type: 杂志文章
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abstract:BACKGROUND:Mutations in the KIAA2022 gene have been reported in male patients with X-linked intellectual disability, and related female carriers were unaffected. Here, we report 14 female patients who carry a heterozygous de novo KIAA2022 mutation and share a phenotype characterised by intellectual disability and epile...
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abstract:INTRODUCTION AND METHODS:Since the concept of the "two hit hypothesis" was introduced over 20 years ago, a wealth of genetic data has accumulated on the mutations found at tumour suppressor loci. Perhaps surprisingly, these data conceal large gaps in our knowledge which genetic and functional studies are beginning to u...
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abstract:BACKGROUND:Inherited abnormalities of complement are found in ∼60% of patients with atypical haemolytic uraemic syndrome (aHUS). Such abnormalities are not fully penetrant. In this study, we have estimated the penetrance of the disease in three families with a CFH mutation (c.3643C>G; p. Arg1215Gly) in whom a common li...
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abstract::A girl with mild geroderma osteodysplastica is reported in order to raise the profile of this autosomal recessive condition which may be underdiagnosed. The important signs of this syndrome include a droopy, jowly face with a degree of malar hypoplasia and mandibular prognathism, lax, but non-hyperelastic skin, most m...
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journal_title:Journal of medical genetics
pub_type: 杂志文章,评审
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journal_title:Journal of medical genetics
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doi:
更新日期:1999-05-01 00:00:00
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更新日期:2003-01-01 00:00:00
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doi:10.1136/jmg.2007.051672
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