PMID- 23771490 OWN - NLM STAT- MEDLINE DCOM- 20130923 LR - 20231206 IS - 1526-632X (Electronic) IS - 0028-3878 (Print) IS - 0028-3878 (Linking) VI - 81 IP - 3 DP - 2013 Jul 16 TI - Genetic risk variants in African Americans with multiple sclerosis. PG - 219-27 LID - 10.1212/WNL.0b013e31829bfe2f [doi] AB - OBJECTIVES: To assess the association of established multiple sclerosis (MS) risk variants in 3,254 African Americans (1,162 cases and 2,092 controls). METHODS: Human leukocyte antigen (HLA)-DRB1, HLA-DQB1, and HLA-A alleles were typed by molecular techniques. Single nucleotide polymorphism (SNP) genotyping was conducted for 76 MS-associated SNPs and 52 ancestry informative marker SNPs selected throughout the genome. Self-declared ancestry was refined by principal component analysis of the ancestry informative marker SNPs. An ancestry-adjusted multivariate model was applied to assess genetic associations. RESULTS: The following major histocompatibility complex risk alleles were replicated: HLA-DRB1*15:01 (odds ratio [OR] = 2.02 [95% confidence interval: 1.54-2.63], p = 2.50e-07), HLA-DRB1*03:01 (OR = 1.58 [1.29-1.94], p = 1.11e-05), as well as HLA-DRB1*04:05 (OR = 2.35 [1.26-4.37], p = 0.007) and the African-specific risk allele of HLA-DRB1*15:03 (OR = 1.26 [1.05-1.51], p = 0.012). The protective association of HLA-A*02:01 was confirmed (OR = 0.72 [0.55-0.93], p = 0.013). None of the HLA-DQB1 alleles were associated with MS. Using a significance threshold of p < 0.01, outside the major histocompatibility complex region, 8 MS SNPs were also found to be associated with MS in African Americans. CONCLUSION: MS genetic risk in African Americans only partially overlaps with that of Europeans and could explain the difference of MS prevalence between populations. FAU - Isobe, Noriko AU - Isobe N AD - Department of Neurology, School of Medicine, University of California, San Francisco, CA, USA. FAU - Gourraud, Pierre-Antoine AU - Gourraud PA FAU - Harbo, Hanne F AU - Harbo HF FAU - Caillier, Stacy J AU - Caillier SJ FAU - Santaniello, Adam AU - Santaniello A FAU - Khankhanian, Pouya AU - Khankhanian P FAU - Maiers, Martin AU - Maiers M FAU - Spellman, Stephen AU - Spellman S FAU - Cereb, Nezih AU - Cereb N FAU - Yang, SooYoung AU - Yang S FAU - Pando, Marcelo J AU - Pando MJ FAU - Piccio, Laura AU - Piccio L FAU - Cross, Anne H AU - Cross AH FAU - De Jager, Philip L AU - De Jager PL FAU - Cree, Bruce A C AU - Cree BA FAU - Hauser, Stephen L AU - Hauser SL FAU - Oksenberg, Jorge R AU - Oksenberg JR LA - eng GR - HHSH234200637020C/PHS HHS/United States GR - R01NS046297/NS/NINDS NIH HHS/United States GR - R01NS076492/NS/NINDS NIH HHS/United States GR - RC2 GM093080/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Research Support, U.S. Gov't, P.H.S. DEP - 20130614 PL - United States TA - Neurology JT - Neurology JID - 0401060 RN - 0 (HLA-A Antigens) RN - 0 (HLA-DQ beta-Chains) RN - 0 (HLA-DQB1 antigen) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adult MH - Black or African American/*genetics MH - Age of Onset MH - Alleles MH - Case-Control Studies MH - Female MH - Genetic Association Studies MH - *Genetic Predisposition to Disease MH - Genotype MH - HLA-A Antigens/genetics MH - HLA-DQ beta-Chains/genetics MH - HLA-DRB1 Chains/genetics MH - Humans MH - Male MH - Middle Aged MH - Multiple Sclerosis/epidemiology/*genetics MH - *Polymorphism, Single Nucleotide PMC - PMC3770164 EDAT- 2013/06/19 06:00 MHDA- 2013/09/24 06:00 PMCR- 2014/07/16 CRDT- 2013/06/18 06:00 PHST- 2013/06/18 06:00 [entrez] PHST- 2013/06/19 06:00 [pubmed] PHST- 2013/09/24 06:00 [medline] PHST- 2014/07/16 00:00 [pmc-release] AID - WNL.0b013e31829bfe2f [pii] AID - WNL205204 [pii] AID - 10.1212/WNL.0b013e31829bfe2f [doi] PST - ppublish SO - Neurology. 2013 Jul 16;81(3):219-27. doi: 10.1212/WNL.0b013e31829bfe2f. Epub 2013 Jun 14.