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Beecham AH, Amezcua L, Chinea A, Manrique CP, Gomez L, Martinez A, Beecham GW, Patsopoulos NA, Chitnis T, Weiner HL, De Jager PL, Burchard EG, Lund BT, Fitzgerald KC, Calabresi PA, Delgado SR, Oksenberg JR, McCauley JL. Ancestral risk modification for multiple sclerosis susceptibility detected across the Major Histocompatibility Complex in a multi-ethnic population. PLoS One 2022; 17:e0279132. [PMID: 36548255 PMCID: PMC9778564 DOI: 10.1371/journal.pone.0279132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 11/29/2022] [Indexed: 12/24/2022] Open
Abstract
The Major Histocompatibility Complex (MHC) makes the largest genetic contribution to multiple sclerosis (MS) susceptibility, with 32 independent effects across the region explaining 20% of the heritability in European populations. Variation is high across populations with allele frequency differences and population-specific risk alleles identified. We sought to identify MHC-specific MS susceptibility variants and assess the effect of ancestral risk modification within 2652 Latinx and Hispanic individuals as well as 2435 Black and African American individuals. We have identified several novel susceptibility alleles which are rare in European populations including HLA-B*53:01, and we have utilized the differing linkage disequilibrium patterns inherent to these populations to identify an independent role for HLA-DRB1*15:01 and HLA-DQB1*06:02 on MS risk. We found a decrease in Native American ancestry in MS cases vs controls across the MHC, peaking near the previously identified MICB locus with a decrease of ~5.5% in Hispanics and ~0.4% in African Americans. We have identified several susceptibility variants, including within the MICB gene region, which show global ancestry risk modification and indicate ancestral differences which may be due in part to correlated environmental factors. We have also identified several susceptibility variants for which MS risk is modified by local ancestry and indicate true ancestral genetic differences; including HLA-DQB1*06:02 for which MS risk for European allele carriers is almost two times the risk for African allele carriers. These results validate the importance of investigating MS susceptibility at an ancestral level and offer insight into the epidemiology of MS phenotypic diversity.
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Affiliation(s)
- Ashley H. Beecham
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Dr. John T. Macdonald Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Lilyana Amezcua
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Angel Chinea
- San Juan MS Center, Guaynabo, Puerto Rico, United States of America
| | - Clara P. Manrique
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Lissette Gomez
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Andrea Martinez
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Gary W. Beecham
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Dr. John T. Macdonald Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Nikolaos A. Patsopoulos
- Ann Romney Center for Neurological Diseases, Brigham and Women’s Hospital, Boston, MA, United States of America
| | - Tanuja Chitnis
- Ann Romney Center for Neurological Diseases, Brigham and Women’s Hospital, Boston, MA, United States of America
| | - Howard L. Weiner
- Ann Romney Center for Neurological Diseases, Brigham and Women’s Hospital, Boston, MA, United States of America
| | - Philip L. De Jager
- Center For Translational & Computational Neuroimmunology and the Multiple Sclerosis Center, Department of Neurology, Columbia University Irving Medical Center, New York, NY, United States of America
| | - Esteban G. Burchard
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, United States of America
| | - Brett T. Lund
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States of America
| | - Kathryn C. Fitzgerald
- Department of Neurology and The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Peter A. Calabresi
- Department of Neurology and The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Silvia R. Delgado
- Multiple Sclerosis Division, Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL, United States of America
| | - Jorge R. Oksenberg
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States of America
| | - Jacob L. McCauley
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
- Dr. John T. Macdonald Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, United States of America
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Chiong-Rivero H, Robers M, Martinez A, Manrique CP, Diaz A, Polito K, Vajdi B, Chan C, Burnett M, Delgado SR, Chinea A, McCauley JL, Amezcua L. Effectiveness of film as a health communication tool to improve perceptions and attitudes in multiple sclerosis. Mult Scler J Exp Transl Clin 2021; 7:2055217321995947. [PMID: 33717502 PMCID: PMC7923991 DOI: 10.1177/2055217321995947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 01/29/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Health communication tools like film are capable of reducing health disparities and could be effective in addressing negative illness perceptions of MS in Hispanics/Latinx. OBJECTIVE To test the feasibility of using a culturally appropriate short narrative film to examine illness perceptions overtime and attitudes in Hispanics/Latinx affected with MS. METHODS Participants were assigned to view a short narrative film (n = 130) or not (n = 106). The Brief Illness Perception Questionnaire (BIPQ) was used to examine illness perceptions at baseline, one and three months. Focus groups were conducted at 6 months. Measures of sociocultural integration were obtained. Individual group BIPQ domains were evaluated over time using paired sample t-test. Multivariate linear regression was used to examine predictors of BIPQ change. RESULTS A more positive perception of treatment (p < 0.0001) and understanding (p = 0.0003) were seen at 3 months for those exposed to film. Focus groups were effective in highlighting that the perceived disease prognosis, family support and awareness of MS contributes to attitudes. Exposure to film was found to be the strongest predictor (Beta:6.31, p = 0.01) of BIPQ change at three months. CONCLUSION Our results provide support that a short narrative film of MS in Hispanics/Latinx is a feasible intervention to change perceptions of MS to a more positive view.
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Affiliation(s)
- Horacio Chiong-Rivero
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Michael Robers
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Andrea Martinez
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Clara P Manrique
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - Kelly Polito
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Borna Vajdi
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Chan Chan
- Statistics, Division of Dental Public Health and Pediatric Dentistry, University of Southern California, Los Angeles, CA
| | - Margaret Burnett
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
| | - Silvia R Delgado
- Department of Neurology, Multiple Sclerosis Division, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | - Jacob L McCauley
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Lilyana Amezcua
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA
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Beecham AH, Amezcua L, Chinea A, Manrique CP, Rubi C, Isobe N, Lund BT, Santaniello A, Beecham GW, Burchard EG, Comabella M, Patsopoulos N, Fitzgerald K, Calabresi PA, De Jager P, Conti DV, Delgado SR, Oksenberg JR, McCauley JL. The genetic diversity of multiple sclerosis risk among Hispanic and African American populations living in the United States. Mult Scler 2020; 26:1329-1339. [PMID: 31368393 PMCID: PMC6994382 DOI: 10.1177/1352458519863764] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Substantial progress has been made toward unraveling the genetic architecture of multiple sclerosis (MS) within populations of European ancestry, but few genetic studies have focused on Hispanic and African American populations within the United States. OBJECTIVE We sought to test the relevance of common European MS risk variants outside of the major histocompatibility complex (n = 200) within these populations. METHODS Genotype data were available on 2652 Hispanics (1298 with MS, 1354 controls) and 2435 African Americans (1298 with MS, 1137 controls). We conducted single variant, pathway, and cumulative genetic risk score analyses. RESULTS We found less replication than statistical power suggested, particularly among African Americans. This could be due to limited correlation between the tested and causal variants within the sample or alternatively could indicate allelic and locus heterogeneity. Differences were observed between pathways enriched among the replicating versus all 200 variants. Although these differences should be examined in larger samples, a potential role exists for gene-environment or gene-gene interactions which alter phenotype differentially across racial and ethnic groups. Cumulative genetic risk scores were associated with MS within each study sample but showed limited diagnostic capability. CONCLUSION These findings provide a framework for fine-mapping efforts in multi-ethnic populations of MS.
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Affiliation(s)
- A H Beecham
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, USA/The Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - L Amezcua
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - A Chinea
- San Juan MS Center, Guaynabo, Puerto Rico, USA; Universidad Central del Caribe, Bayamon, Puerto Rico, USA
| | - C P Manrique
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - C Rubi
- San Juan MS Center, Guaynabo, Puerto Rico, USA; Universidad Central del Caribe, Bayamon, Puerto Rico, USA
| | - N Isobe
- Department of Neurological Therapeutics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - B T Lund
- Department of Neurology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - A Santaniello
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - G W Beecham
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, USA/The Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - E G Burchard
- Departments of Medicine and Bioengineering and Therapeutic Sciences, University of California at San Francisco, San Francisco, CA, USA
| | - M Comabella
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya (Cemcat), Institut de Recerca Vall d'Hebron (VHIR), Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - N Patsopoulos
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - K Fitzgerald
- Department of Neurology and The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P A Calabresi
- Department of Neurology and The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - P De Jager
- Center for Translational and Computational Neuroimmunology, Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - D V Conti
- Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - S R Delgado
- Multiple Sclerosis Division, Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - J R Oksenberg
- Department of Neurology, University of California at San Francisco, San Francisco, CA, USA
| | - J L McCauley
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, FL, USA/The Dr. John T. Macdonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, FL, USA
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Cuccaro ML, Manrique CP, Quintero MA, Martinez R, McCauley JL. Understanding Participation in Genetic Research Among Patients With Multiple Sclerosis: The Influences of Ethnicity, Gender, Education, and Age. Front Genet 2020; 11:120. [PMID: 32231680 PMCID: PMC7082924 DOI: 10.3389/fgene.2020.00120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/31/2020] [Indexed: 11/13/2022] Open
Abstract
This study examined reasons for participation in a genetic study of risk for multiple sclerosis (MS). Our sample consisted of 101 patients diagnosed with MS who were approached about enrolling in the Multiple Sclerosis Genetic Susceptibility Study. Participants were predominantly Hispanic (80%), female (80%), and well educated (71%), having at least some level of college education. Of these 101 individuals who were approached, 95 agreed to participate and are the focus of this report. Among enrollees, the most frequently cited reasons for participation were to find a cure for MS (56%), having MS (46%), and helping future generations (37%). Regression models comparing ethnic groups, Hispanics endorsed having MS as a reason to participate significantly more frequently than non-Hispanics (HI 52%, non-HI 19%, p = 0.015) while non-Hispanics endorsed finding new and better treatments significantly more frequently than Hispanics (Hispanic 17%, non-Hispanic 50%, p = 0.003). Among our three age groups, younger individuals endorsed finding a cure for MS significantly more frequently (74% of 18-35-year olds vs. 56% of 36-55 year olds vs. 39% of >55 year olds). Our results suggest that motivations for participation in genetic research vary by ethnicity, and that these influences need to be considered in developing more inclusive programs of disease-related genetic research. Future efforts should focus on development of standard methods for understanding participation in genetic and genomic research, especially among underrepresented groups as a catalyst for engaging all populations.
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Affiliation(s)
- Michael L Cuccaro
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation, Department of Human Genetics and Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Clara P Manrique
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Maria A Quintero
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Ricardo Martinez
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jacob L McCauley
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation, Department of Human Genetics and Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
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Nuytemans K, Manrique CP, Uhlenberg A, Scott WK, Cuccaro ML, Luca CC, Singer C, Vance JM. Motivations for Participation in Parkinson Disease Genetic Research Among Hispanics versus Non-Hispanics. Front Genet 2019; 10:658. [PMID: 31379924 PMCID: PMC6646686 DOI: 10.3389/fgene.2019.00658] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 06/21/2019] [Indexed: 11/13/2022] Open
Abstract
Involvement of participants from different racial and ethnic groups in genomic research is vital to reducing health disparities in the precision medicine era. Racial and ethnically diverse populations are underrepresented in current genomic research, creating bias in result interpretation. Limited information is available to support motivations or barriers of these groups to participate in genomic research for late-onset, neurodegenerative disorders. To evaluate willingness for research participation, we compared motivations for participation in genetic studies among 113 Parkinson disease (PD) patients and 49 caregivers visiting the Movement Disorders clinic at the University of Miami. Hispanics and non-Hispanics were equally motivated to participate in genetic research for PD. However, Hispanic patients were less likely to be influenced by the promise of scientific advancements (N = 0.01). This lack of scientific interest, but not other motivations, was found to be likely confounded by lower levels of obtained education (N = 0.001). Overall, these results suggest that underrepresentation of Hispanics in genetic research may be partly due to reduced invitations to these studies.
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Affiliation(s)
- Karen Nuytemans
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Clara P Manrique
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Aaron Uhlenberg
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - William K Scott
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Michael L Cuccaro
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Corneliu C Luca
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Carlos Singer
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jeffery M Vance
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, United States.,Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami Miller School of Medicine, Miami, FL, United States
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Mitrovič M, Patsopoulos NA, Beecham AH, Dankowski T, Goris A, Dubois B, D’hooghe MB, Lemmens R, Van Damme P, Søndergaard HB, Sellebjerg F, Sorensen PS, Ullum H, Thørner LW, Werge T, Saarela J, Cournu-Rebeix I, Damotte V, Fontaine B, Guillot-Noel L, Lathrop M, Vukusik S, Gourraud PA, Andlauer TF, Pongratz V, Buck D, Gasperi C, Bayas A, Heesen C, Kümpfel T, Linker R, Paul F, Stangel M, Tackenberg B, Bergh FT, Warnke C, Wiendl H, Wildemann B, Zettl U, Ziemann U, Tumani H, Gold R, Grummel V, Hemmer B, Knier B, Lill CM, Luessi F, Dardiotis E, Agliardi C, Barizzone N, Mascia E, Bernardinelli L, Comi G, Cusi D, Esposito F, Ferrè L, Comi C, Galimberti D, Leone MA, Sorosina M, Mescheriakova J, Hintzen R, van Duijn C, Teunissen CE, Bos SD, Myhr KM, Celius EG, Lie BA, Spurkland A, Comabella M, Montalban X, Alfredsson L, Stridh P, Hillert J, Jagodic M, Piehl F, Jelčić I, Martin R, Sospedra M, Ban M, Hawkins C, Hysi P, Kalra S, Karpe F, Khadake J, Lachance G, Neville M, Santaniello A, Caillier SJ, Calabresi PA, Cree BA, Cross A, Davis MF, Haines JL, de Bakker PI, Delgado S, Dembele M, Edwards K, Fitzgerald KC, Hakonarson H, Konidari I, Lathi E, Manrique CP, Pericak-Vance MA, Piccio L, Schaefer C, McCabe C, Weiner H, Goldstein J, Olsson T, Hadjigeorgiou G, Taylor B, Tajouri L, Charlesworth J, Booth DR, Harbo HF, Ivinson AJ, Hauser SL, Compston A, Stewart G, Zipp F, Barcellos LF, Baranzini SE, Martinelli-Boneschi F, D’Alfonso S, Ziegler A, Oturai A, McCauley JL, Sawcer SJ, Oksenberg JR, De Jager PL, Kockum I, Hafler DA, Cotsapas C. Low-Frequency and Rare-Coding Variation Contributes to Multiple Sclerosis Risk. Cell 2019; 178:262. [PMID: 31251915 PMCID: PMC6602362 DOI: 10.1016/j.cell.2019.06.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rajabli F, Feliciano BE, Celis K, Hamilton-Nelson KL, Whitehead PL, Adams LD, Bussies PL, Manrique CP, Rodriguez A, Rodriguez V, Starks T, Byfield GE, Sierra Lopez CB, McCauley JL, Acosta H, Chinea A, Kunkle BW, Reitz C, Farrer LA, Schellenberg GD, Vardarajan BN, Vance JM, Cuccaro ML, Martin ER, Haines JL, Byrd GS, Beecham GW, Pericak-Vance MA. Ancestral origin of ApoE ε4 Alzheimer disease risk in Puerto Rican and African American populations. PLoS Genet 2018; 14:e1007791. [PMID: 30517106 PMCID: PMC6281216 DOI: 10.1371/journal.pgen.1007791] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 10/25/2018] [Indexed: 11/19/2022] Open
Abstract
The ApoE ε4 allele is the most significant genetic risk factor for late-onset Alzheimer disease. The risk conferred by ε4, however, differs across populations, with populations of African ancestry showing lower ε4 risk compared to those of European or Asian ancestry. The cause of this heterogeneity in risk effect is currently unknown; it may be due to environmental or cultural factors correlated with ancestry, or it may be due to genetic variation local to the ApoE region that differs among populations. Exploring these hypotheses may lead to novel, population-specific therapeutics and risk predictions. To test these hypotheses, we analyzed ApoE genotypes and genome-wide array data in individuals from African American and Puerto Rican populations. A total of 1,766 African American and 220 Puerto Rican individuals with late-onset Alzheimer disease, and 3,730 African American and 169 Puerto Rican cognitively healthy individuals (> 65 years) participated in the study. We first assessed average ancestry across the genome ("global" ancestry) and then tested it for interaction with ApoE genotypes. Next, we assessed the ancestral background of ApoE alleles ("local" ancestry) and tested if ancestry local to ApoE influenced Alzheimer disease risk while controlling for global ancestry. Measures of global ancestry showed no interaction with ApoE risk (Puerto Rican: p-value = 0.49; African American: p-value = 0.65). Conversely, ancestry local to the ApoE region showed an interaction with the ApoE ε4 allele in both populations (Puerto Rican: p-value = 0.019; African American: p-value = 0.005). ApoE ε4 alleles on an African background conferred a lower risk than those with a European ancestral background, regardless of population (Puerto Rican: OR = 1.26 on African background, OR = 4.49 on European; African American: OR = 2.34 on African background, OR = 3.05 on European background). Factors contributing to the lower risk effect in the ApoE gene ε4 allele are likely due to ancestry-specific genetic factors near ApoE rather than non-genetic ethnic, cultural, and environmental factors.
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Affiliation(s)
- Farid Rajabli
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | | | - Katrina Celis
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Kara L. Hamilton-Nelson
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Patrice L. Whitehead
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Larry D. Adams
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Parker L. Bussies
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Clara P. Manrique
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Alejandra Rodriguez
- Universidad Central del Caribe, Bayamón, Puerto Rico, United States of America
| | - Vanessa Rodriguez
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Takiyah Starks
- Center for Outreach in Alzheimer’s, Aging and Community Health at North Carolina A&T State University, Greensboro, North Carolina, United States of America
| | - Grace E. Byfield
- Center for Outreach in Alzheimer’s, Aging and Community Health at North Carolina A&T State University, Greensboro, North Carolina, United States of America
| | | | - Jacob L. McCauley
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Heriberto Acosta
- Clinica de la Memoria, San Juan, Puerto Rico, United States of America
| | - Angel Chinea
- Universidad Central del Caribe, Bayamón, Puerto Rico, United States of America
| | - Brian W. Kunkle
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Christiane Reitz
- Gertrude H. Sergievsky Center, Taub Institute for Research on the Aging Brain, Departments of Neurology, Psychiatry, and Epidemiology, College of Physicians and Surgeons, Columbia University, New York, New York, United States of America
| | - Lindsay A. Farrer
- Departments of Medicine (Biomedical Genetics), Neurology, Ophthalmology, Epidemiology, and Biostatistics, Boston University Schools of Medicine and Public Health, Boston, Massachusetts, United States of America
| | - Gerard D. Schellenberg
- Penn Neurodegeneration Genomics Center, Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
| | - Badri N. Vardarajan
- Gertrude H. Sergievsky Center, Taub Institute for Research on the Aging Brain, Departments of Neurology, Psychiatry, and Epidemiology, College of Physicians and Surgeons, Columbia University, New York, New York, United States of America
| | - Jeffery M. Vance
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
- Dr. John T. MacDonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Michael L. Cuccaro
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
- Dr. John T. MacDonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Eden R. Martin
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
- Dr. John T. MacDonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Jonathan L. Haines
- Department of Population & Quantitative Health Sciences, Institute for Computational Biology, Case Western Reserve University School of Medicine, Cleveland, Ohio, United States of America
| | - Goldie S. Byrd
- Center for Outreach in Alzheimer’s, Aging and Community Health at North Carolina A&T State University, Greensboro, North Carolina, United States of America
| | - Gary W. Beecham
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
- Dr. John T. MacDonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
| | - Margaret A. Pericak-Vance
- John P. Hussman Institute for Human Genomics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
- Dr. John T. MacDonald Foundation Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, United States of America
- * E-mail:
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Mitrovič M, Patsopoulos NA, Beecham AH, Dankowski T, Goris A, Dubois B, D’hooghe MB, Lemmens R, Van Damme P, Søndergaard HB, Sellebjerg F, Sorensen PS, Ullum H, Thørner LW, Werge T, Saarela J, Cournu-Rebeix I, Damotte V, Fontaine B, Guillot-Noel L, Lathrop M, Vukusik S, Gourraud PA, Andlauer TF, Pongratz V, Buck D, Gasperi C, Bayas A, Heesen C, Kümpfel T, Linker R, Paul F, Stangel M, Tackenberg B, Bergh FT, Warnke C, Wiendl H, Wildemann B, Zettl U, Ziemann U, Tumani H, Gold R, Grummel V, Hemmer B, Knier B, Lill CM, Luessi F, Dardiotis E, Agliardi C, Barizzone N, Mascia E, Bernardinelli L, Comi G, Cusi D, Esposito F, Ferrè L, Comi C, Galimberti D, Leone MA, Sorosina M, Mescheriakova J, Hintzen R, van Duijn C, Teunissen CE, Bos SD, Myhr KM, Celius EG, Lie BA, Spurkland A, Comabella M, Montalban X, Alfredsson L, Stridh P, Hillert J, Jagodic M, Piehl F, Jelčić I, Martin R, Sospedra M, Ban M, Hawkins C, Hysi P, Kalra S, Karpe F, Khadake J, Lachance G, Neville M, Santaniello A, Caillier SJ, Calabresi PA, Cree BA, Cross A, Davis MF, Haines JL, de Bakker PI, Delgado S, Dembele M, Edwards K, Fitzgerald KC, Hakonarson H, Konidari I, Lathi E, Manrique CP, Pericak-Vance MA, Piccio L, Schaefer C, McCabe C, Weiner H, Goldstein J, Olsson T, Hadjigeorgiou G, Taylor B, Tajouri L, Charlesworth J, Booth DR, Harbo HF, Ivinson AJ, Hauser SL, Compston A, Stewart G, Zipp F, Barcellos LF, Baranzini SE, Martinelli-Boneschi F, D’Alfonso S, Ziegler A, Oturai A, McCauley JL, Sawcer SJ, Oksenberg JR, De Jager PL, Kockum I, Hafler DA, Cotsapas C. Low-Frequency and Rare-Coding Variation Contributes to Multiple Sclerosis Risk. Cell 2018; 175:1679-1687.e7. [PMID: 30343897 PMCID: PMC6269166 DOI: 10.1016/j.cell.2018.09.049] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 08/08/2018] [Accepted: 09/24/2018] [Indexed: 12/21/2022]
Abstract
Multiple sclerosis is a complex neurological disease, with ∼20% of risk heritability attributable to common genetic variants, including >230 identified by genome-wide association studies. Multiple strands of evidence suggest that much of the remaining heritability is also due to additive effects of common variants rather than epistasis between these variants or mutations exclusive to individual families. Here, we show in 68,379 cases and controls that up to 5% of this heritability is explained by low-frequency variation in gene coding sequence. We identify four novel genes driving MS risk independently of common-variant signals, highlighting key pathogenic roles for regulatory T cell homeostasis and regulation, IFNγ biology, and NFκB signaling. As low-frequency variants do not show substantial linkage disequilibrium with other variants, and as coding variants are more interpretable and experimentally tractable than non-coding variation, our discoveries constitute a rich resource for dissecting the pathobiology of MS.
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Fewings N, Gatt PN, McKay FC, Parnell GP, Schibeci SD, Edwards J, Basuki MA, Goldinger A, Fabis-Pedrini MJ, Kermode AG, Manrique CP, McCauley JL, Nickles D, Baranzini SE, Burke T, Vucic S, Stewart GJ, Booth DR. Data characterizing the ZMIZ1 molecular phenotype of multiple sclerosis. Data Brief 2017; 11:364-370. [PMID: 28275670 PMCID: PMC5329066 DOI: 10.1016/j.dib.2017.02.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 01/09/2023] Open
Abstract
The data presented in this article are related to the research article entitled "The autoimmune risk gene ZMIZ1 is a vitamin D responsived marker of a molecular phenotype of multiple sclerosis" Fewings et al. (2017) [1]. Here we identify the set of genes correlated with ZMIZ1 in multiple cohorts, provide phenotypic details on those cohorts, and identify the genes negatively correlated with ZMIZ1 and the cells predominantly expressing those genes. We identify the metabolic pathways in which the molecular phenotype genes are over-represented. Finally, we present the flow cytometry gating strategy we have used to identify the immune cells from blood which are producing ZMIZ1 and RPS6.
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Affiliation(s)
- N Fewings
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - P N Gatt
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - F C McKay
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - G P Parnell
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - S D Schibeci
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - J Edwards
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - M A Basuki
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - A Goldinger
- University of Queensland Diamantina Institute, Translational Research Institute, Australia; The Queensland Brain Institute, University of Queensland, Australia
| | - M J Fabis-Pedrini
- Western Australian Neuroscience Research Institute, University of Western Australia, Nedlands, Western Australia, Australia; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - A G Kermode
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - C P Manrique
- John P. Hussman Institute for Human Genomics and the Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miller School of Medicine, Miami, FL 33136, USA
| | - J L McCauley
- John P. Hussman Institute for Human Genomics and the Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miller School of Medicine, Miami, FL 33136, USA
| | - D Nickles
- Department of Neurology, University of California San Francisco, USA
| | - S E Baranzini
- Department of Neurology, University of California San Francisco, USA
| | - T Burke
- Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - S Vucic
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - G J Stewart
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - D R Booth
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
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Fewings NL, Gatt PN, McKay FC, Parnell GP, Schibeci SD, Edwards J, Basuki MA, Goldinger A, Fabis-Pedrini MJ, Kermode AG, Manrique CP, McCauley JL, Nickles D, Baranzini SE, Burke T, Vucic S, Stewart GJ, Booth DR. The autoimmune risk gene ZMIZ1 is a vitamin D responsive marker of a molecular phenotype of multiple sclerosis. J Autoimmun 2017; 78:57-69. [PMID: 28063629 DOI: 10.1016/j.jaut.2016.12.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/22/2016] [Accepted: 12/24/2016] [Indexed: 01/08/2023]
Abstract
Multiple Sclerosis (MS) is a neurological condition driven in part by immune cells from the peripheral circulation, the targets for current successful therapies. The autoimmune and MS risk gene ZMIZ1 is underexpressed in blood in people with MS. We show that, from three independent sets of transcriptomic data, expression of ZMIZ1 is tightly correlated with that of hundreds of other genes. Further we show expression is partially heritable (heritability 0.26), relatively stable over time, predominantly in plasmacytoid dendritic cells and non-classical monocytes, and that levels of ZMIZ1 protein expression are reduced in MS. ZMIZ1 gene expression is increased in response to calcipotriol (1,25 Vitamin D3) (p < 0.0003) and associated with Epstein Barr Virus (EBV) EBNA-1 antibody titre (p < 0.004). MS therapies fingolimod and dimethyl fumarate altered blood ZMIZ1 gene expression compared to untreated MS. The phenotype indicates susceptibility to MS, and may correspond with clinical response and represent a novel clinical target.
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Affiliation(s)
- N L Fewings
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - P N Gatt
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - F C McKay
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - G P Parnell
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - S D Schibeci
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - J Edwards
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - M A Basuki
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - A Goldinger
- University of Queensland, Diamantina Institute, Translational Research Institute, The Queensland Brain Institute, University of Queensland, Australia
| | - M J Fabis-Pedrini
- Western Australian Neuroscience Research Institute, University of Western Australia, Nedlands, Western Australia, Australia; Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - A G Kermode
- Institute for Immunology and Infectious Diseases, Murdoch University, Murdoch, Western Australia, Australia
| | - C P Manrique
- John P. Hussman Institute for Human Genomics and the Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miller School of Medicine, Miami, FL 33136, USA
| | - J L McCauley
- John P. Hussman Institute for Human Genomics and the Dr. John T. Macdonald Foundation Department of Human Genetics, University of Miami, Miller School of Medicine, Miami, FL 33136, USA
| | - D Nickles
- Department of Neurology, University of California San Francisco, USA
| | - S E Baranzini
- Department of Neurology, University of California San Francisco, USA
| | - T Burke
- Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - S Vucic
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - G J Stewart
- Centre for Immunology and Allergy Research, Westmead Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia
| | - D R Booth
- Western Clinical School, University of Sydney, Westmead Hospital, Sydney, New South Wales, Australia.
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Hadjixenofontos A, Beecham AH, Manrique CP, Pericak-Vance MA, Tornes L, Ortega M, Rammohan KW, McCauley JL, Delgado SR. Clinical Expression of Multiple Sclerosis in Hispanic Whites of Primarily Caribbean Ancestry. Neuroepidemiology 2015; 44:262-8. [DOI: 10.1159/000431375] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Accepted: 05/08/2015] [Indexed: 11/19/2022] Open
Abstract
Objective: The clinical characteristics of multiple sclerosis (MS) are not well defined in Hispanic populations. We hypothesized that disease presentation in Hispanic white (HW) patients will be different from non-Hispanic white (NHW) patients given their ancestral background and reported lower disease prevalence. This study was undertaken to compare HW of primarily Caribbean ancestry to NHW on clinical characteristics of MS. Methods: We assessed 312 HW and 312 NHW patients with definite MS for clinical disease characteristics obtained through consented review of medical records. In order to assess the relationship between age-related phenotypes and ethnicity, linear regression was used. Logistic regression was used to assess the relationship between ethnicity and descriptors of disease presentation and severity as well as presence of neurological symptoms. Results: We observed a significantly younger age at diagnosis (p = 1.38E-02) and age at exam (p = 2.36E-05) in HW. However, age at first symptom did not differ significantly between the two groups. Furthermore, within HW, the mean age at first symptom and age at diagnosis was significantly younger in those born in the United States (p < 1.00E-03 for both). Interestingly, we noted an increase in ambulatory disability in HW patients, primarily among those with relapsing disease (p = 4.18E-03). Conclusions: We found several differences in age-related phenotypes and disease severity between HW of primarily Caribbean origin and NHW patients. To our knowledge, this is the largest study to date that examined the clinical characteristics of MS in Hispanic patients of largely Caribbean origin.
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Beecham AH, Patsopoulos NA, Xifara DK, Davis MF, Kemppinen A, Cotsapas C, Shah TS, Spencer C, Booth D, Goris A, Oturai A, Saarela J, Fontaine B, Hemmer B, Martin C, Zipp F, D'Alfonso S, Martinelli-Boneschi F, Taylor B, Harbo HF, Kockum I, Hillert J, Olsson T, Ban M, Oksenberg JR, Hintzen R, Barcellos LF, Agliardi C, Alfredsson L, Alizadeh M, Anderson C, Andrews R, Søndergaard HB, Baker A, Band G, Baranzini SE, Barizzone N, Barrett J, Bellenguez C, Bergamaschi L, Bernardinelli L, Berthele A, Biberacher V, Binder TMC, Blackburn H, Bomfim IL, Brambilla P, Broadley S, Brochet B, Brundin L, Buck D, Butzkueven H, Caillier SJ, Camu W, Carpentier W, Cavalla P, Celius EG, Coman I, Comi G, Corrado L, Cosemans L, Cournu-Rebeix I, Cree BAC, Cusi D, Damotte V, Defer G, Delgado SR, Deloukas P, di Sapio A, Dilthey AT, Donnelly P, Dubois B, Duddy M, Edkins S, Elovaara I, Esposito F, Evangelou N, Fiddes B, Field J, Franke A, Freeman C, Frohlich IY, Galimberti D, Gieger C, Gourraud PA, Graetz C, Graham A, Grummel V, Guaschino C, Hadjixenofontos A, Hakonarson H, Halfpenny C, Hall G, Hall P, Hamsten A, Harley J, Harrower T, Hawkins C, Hellenthal G, Hillier C, Hobart J, Hoshi M, Hunt SE, Jagodic M, Jelčić I, Jochim A, Kendall B, Kermode A, Kilpatrick T, Koivisto K, Konidari I, Korn T, Kronsbein H, Langford C, Larsson M, Lathrop M, Lebrun-Frenay C, Lechner-Scott J, Lee MH, Leone MA, Leppä V, Liberatore G, Lie BA, Lill CM, Lindén M, Link J, Luessi F, Lycke J, Macciardi F, Männistö S, Manrique CP, Martin R, Martinelli V, Mason D, Mazibrada G, McCabe C, Mero IL, Mescheriakova J, Moutsianas L, Myhr KM, Nagels G, Nicholas R, Nilsson P, Piehl F, Pirinen M, Price SE, Quach H, Reunanen M, Robberecht W, Robertson NP, Rodegher M, Rog D, Salvetti M, Schnetz-Boutaud NC, Sellebjerg F, Selter RC, Schaefer C, Shaunak S, Shen L, Shields S, Siffrin V, Slee M, Sorensen PS, Sorosina M, Sospedra M, Spurkland A, Strange A, Sundqvist E, Thijs V, Thorpe J, Ticca A, Tienari P, van Duijn C, Visser EM, Vucic S, Westerlind H, Wiley JS, Wilkins A, Wilson JF, Winkelmann J, Zajicek J, Zindler E, Haines JL, Pericak-Vance MA, Ivinson AJ, Stewart G, Hafler D, Hauser SL, Compston A, McVean G, De Jager P, Sawcer SJ, McCauley JL. Analysis of immune-related loci identifies 48 new susceptibility variants for multiple sclerosis. Nat Genet 2013; 45:1353-60. [PMID: 24076602 PMCID: PMC3832895 DOI: 10.1038/ng.2770] [Citation(s) in RCA: 980] [Impact Index Per Article: 89.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 09/03/2013] [Indexed: 12/13/2022]
Abstract
Using the ImmunoChip custom genotyping array, we analyzed 14,498 subjects with multiple sclerosis and 24,091 healthy controls for 161,311 autosomal variants and identified 135 potentially associated regions (P < 1.0 × 10(-4)). In a replication phase, we combined these data with previous genome-wide association study (GWAS) data from an independent 14,802 subjects with multiple sclerosis and 26,703 healthy controls. In these 80,094 individuals of European ancestry, we identified 48 new susceptibility variants (P < 5.0 × 10(-8)), 3 of which we found after conditioning on previously identified variants. Thus, there are now 110 established multiple sclerosis risk variants at 103 discrete loci outside of the major histocompatibility complex. With high-resolution Bayesian fine mapping, we identified five regions where one variant accounted for more than 50% of the posterior probability of association. This study enhances the catalog of multiple sclerosis risk variants and illustrates the value of fine mapping in the resolution of GWAS signals.
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