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Margolis DJ, Duke JL, Mitra N, Berna RA, Hoffstad OJ, Wasserman JR, Dinou A, Damianos G, Kotsopoulou I, Tairis N, Ferriola DA, Mosbruger TL, Hayeck TJ, Yan AC, Monos DS. A combination of HLA-DP α and β chain polymorphisms paired with a SNP in the DPB1 3' UTR region, denoting expression levels, are associated with atopic dermatitis. Front Genet 2023; 14:1004138. [PMID: 36911412 PMCID: PMC9995861 DOI: 10.3389/fgene.2023.1004138] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/13/2023] [Indexed: 02/25/2023] Open
Abstract
Introduction: Components of the immune response have previously been associated with the pathophysiology of atopic dermatitis (AD), specifically the Human Leukocyte Antigen (HLA) Class II region via genome-wide association studies, however the exact elements have not been identified. Methods: This study examines the genetic variation of HLA Class II genes using next generation sequencing (NGS) and evaluates the resultant amino acids, with particular attention on binding site residues, for associations with AD. The Genetics of AD cohort was used to evaluate HLA Class II allelic variation on 464 subjects with AD and 384 controls. Results: Statistically significant associations with HLA-DP α and β alleles and specific amino acids were found, some conferring susceptibility to AD and others with a protective effect. Evaluation of polymorphic residues in DP binding pockets revealed the critical role of P1 and P6 (P1: α31M + (β84G or β84V) [protection]; α31Q + β84D [susceptibility] and P6: α11A + β11G [protection]) and were replicated with a national cohort of children consisting of 424 AD subjects. Independently, AD susceptibility-associated residues were associated with the G polymorphism of SNP rs9277534 in the 3' UTR of the HLA-DPB1 gene, denoting higher expression of these HLA-DP alleles, while protection-associated residues were associated with the A polymorphism, denoting lower expression. Discussion: These findings lay the foundation for evaluating non-self-antigens suspected to be associated with AD as they potentially interact with particular HLA Class II subcomponents, forming a complex involved in the pathophysiology of AD. It is possible that a combination of structural HLA-DP components and levels of expression of these components contribute to AD pathophysiology.
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Affiliation(s)
- David J. Margolis
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Jamie L. Duke
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Nandita Mitra
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Ronald A. Berna
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Ole J. Hoffstad
- Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Jenna R. Wasserman
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Amalia Dinou
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Georgios Damianos
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Ioanna Kotsopoulou
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Nikolaos Tairis
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Deborah A. Ferriola
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Timothy L. Mosbruger
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Tristan J. Hayeck
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pathology and Laboratory Medicine, Perelman Schools of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Albert C. Yan
- Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, United States
- Section of Dermatology, Division of General Pediatrics, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
| | - Dimitri S. Monos
- Department of Pathology and Laboratory Medicine, Children’s Hospital of Philadelphia, Philadelphia, PA, United States
- Department of Pathology and Laboratory Medicine, Perelman Schools of Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Rosti B, Mahler V. Adding a second skin prick test reading and modifying the cut‐off for beta‐lactam–specific
IgE
enhances the sensitivity in the routine diagnostic workup for immediate beta‐lactam hypersensitivity. Contact Dermatitis 2020; 83:361-371. [DOI: 10.1111/cod.13622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 05/21/2020] [Accepted: 05/25/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Bernadette Rosti
- Allergy‐Clinic of the Department of Dermatology University Hospital of Erlangen Erlangen Germany
- Dental Practice Dr. Ludwig and Colleagues MVZ GmbH Fürth Germany
| | - Vera Mahler
- Allergy‐Clinic of the Department of Dermatology University Hospital of Erlangen Erlangen Germany
- Division of Allergology Paul‐Ehrlich‐Institut Langen Germany
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Dahmani DI, Chila N, Abdelouahab F, Bouyoucef H, Bougrida M, Rouabah L, Nedjar F. [Association between HLA-class II genes and asthma susceptibility in a selected Constantine population]. Pan Afr Med J 2020; 35:48. [PMID: 32537053 PMCID: PMC7250225 DOI: 10.11604/pamj.2020.35.48.13340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/12/2019] [Indexed: 11/13/2022] Open
Abstract
Introduction l’asthme est une maladie complexe causé par l’interaction de plusieurs gènes dont certains ont un effet protecteur et d’autres contribuent à l’apparition de la maladie. Cet article s’intéresse à une partie du bras court du chromosome 6 où siègent les gènes codant pour le complexe majeur d’histocompatibilité dénommé HLA qui joue un rôle important dans la pathogénèse de l’asthme. Méthodes notre étude inclut 61 personnes dont 30 personnes non asthmatiques non allergiques et 31 patients atteints d’asthme allergique depuis plus de 2 ans. Le statut atopique de l’asthme a été confirmé par les tests cutanés et le typage HLA classe II a été réalisé suivant le principe de la technique sérologique de séparation par Fluorobeads B. Résultats l’analyse statistique révèle que les gènes HLA-DR11 et DQ2 sont significativement plus fréquents chez les asthmatiques par rapport aux témoins, les résultats sont comme suit: le HLA-DR11 avec une p=0,05 et le HLA-DQ2 avec une p=0.002, cela nous a conduit à dire qu’il s’agit peut-être de marqueurs HLA en association avec l’asthme. En revanche le marqueur HLA-DQ6 était nettement plus important chez la population témoin que chez les sujets asthmatiques avec p=0.003. Conclusion cela nous a conduit à dire que les marqueurs HLA-DR11 et DQ2 pourraient être des gènes potentiels de susceptibilité à l’asthme, alors que HLA-DQ6 pourrait avoir un effet protecteur.
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Affiliation(s)
- Dahbia Ines Dahmani
- Unité HLA Service de Physiologie et Exploration Fonctionnelle, CHU Benbadis, Constantine, Algérie.,Laboratoire de Recherche en Maladies Métaboliques, Faculté de Médecine, Université de Constantine 3, Algérie.,Laboratoire de Biologie Bellulaire et Moléculaire, Faculté des Sciences de la Nature et de la Vie, Université des Frères Mentouri, Constantine 1, Algérie
| | - Nacima Chila
- Service de Physiologie, CHU de Blida, Blida, Algérie
| | - Fouzia Abdelouahab
- Unité HLA Service de Physiologie et Exploration Fonctionnelle, CHU Benbadis, Constantine, Algérie
| | - Houda Bouyoucef
- Unité HLA Service de Physiologie et Exploration Fonctionnelle, CHU Benbadis, Constantine, Algérie
| | - Mohamed Bougrida
- Laboratoire de Recherche en Maladies Métaboliques, Faculté de Médecine, Université de Constantine 3, Algérie
| | - Laila Rouabah
- Laboratoire de Biologie Bellulaire et Moléculaire, Faculté des Sciences de la Nature et de la Vie, Université des Frères Mentouri, Constantine 1, Algérie
| | - Fayssal Nedjar
- Unité HLA Service de Physiologie et Exploration Fonctionnelle, CHU Benbadis, Constantine, Algérie
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Margolis DJ, Mitra N, Kim B, Gupta J, Hoffstad OJ, Papadopoulos M, Wubbenhorst B, Nathanson KL, Duke JL, Monos DS, Kamoun M. Association of HLA-DRB1 genetic variants with the persistence of atopic dermatitis. Hum Immunol 2015; 76:571-7. [PMID: 26307177 PMCID: PMC4593755 DOI: 10.1016/j.humimm.2015.08.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/27/2015] [Accepted: 08/21/2015] [Indexed: 10/23/2022]
Abstract
Atopic dermatitis (AD) is a waxing and waning illness of childhood that is likely caused by interactions between an altered skin barrier and immune dysregulation. The goal of our study was to evaluate the association of DRB1 genetic variants and the persistence of AD using whole exome sequencing and high resolution typing. DRB1 was interrogated based on previous reports that utilized high throughput techniques. We evaluated an ongoing nation-wide long-term cohort of children with AD in which patients are asked every 6months about their medication use and their AD symptoms. In total, 87 African-American and 50 European-American children were evaluated. Genetic association analysis was performed using a software tool focusing on amino acid variable positions shared by HLA-DRB1 alleles covering the antigen presenting domain. Amino acid variations at position 9 (pocket 9), position 26, and position 78 (pocket 4) were marginally associated with the prevalence of AD. However, the odds ratio was 0.30 (0.14, 0.68; p=0.003) for residue 78, 0.27 (0.10, 0.69; p=0.006) for residue 26 and not significant for residue 9 with respect to the persistence of AD. In conclusion, amino acid variations at peptide-binding pockets of HLA-DRB1 were associated with the persistence of AD in African-American children.
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Affiliation(s)
- David J Margolis
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Department of Dermatology, University of Pennsylvania, Philadelphia, PA, United States; Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA, United States.
| | - Nandita Mitra
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA, United States
| | - Brian Kim
- Division of Dermatology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States; Department of Anesthesiology, Washington University School of Medicine, St. Louis, MO, United States
| | - Jayanta Gupta
- Division of Biostatistics and Epidemiology, Department of Biomedical Sciences, Texas Tech University Health Sciences Center, El Paso, TX, United States
| | - Ole J Hoffstad
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA, United States
| | - Maryte Papadopoulos
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Department of Dermatology, University of Pennsylvania, Philadelphia, PA, United States
| | - Bradley Wubbenhorst
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Division of Translational Medicine and Human Genetics, Department of Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Katherine L Nathanson
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Division of Translational Medicine and Human Genetics, Department of Medicine, University of Pennsylvania, Philadelphia, PA, United States; Abramson Cancer Center, Hospital of the University of Pennsylvania, Philadelphia, PA, United States
| | - Jamie L Duke
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Dimitri S Monos
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA, United States; Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, United States
| | - Malek Kamoun
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States; Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA, United States
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Granada M, Wilk JB, Tuzova M, Strachan DP, Weidinger S, Albrecht E, Gieger C, Heinrich J, Himes BE, Hunninghake GM, Celedón JC, Weiss ST, Cruikshank WW, Farrer LA, Center DM, O’Connor GT. A genome-wide association study of plasma total IgE concentrations in the Framingham Heart Study. J Allergy Clin Immunol 2012; 129:840-845.e21. [PMID: 22075330 PMCID: PMC3293994 DOI: 10.1016/j.jaci.2011.09.029] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 09/19/2011] [Accepted: 09/27/2011] [Indexed: 10/15/2022]
Abstract
BACKGROUND Atopy and plasma IgE concentration are genetically complex traits, and the specific genetic risk factors that lead to IgE dysregulation and clinical atopy are an area of active investigation. OBJECTIVE We sought to ascertain the genetic risk factors that lead to IgE dysregulation. METHODS A genome-wide association study (GWAS) was performed in 6819 participants from the Framingham Heart Study (FHS). Seventy of the top single nucleotide polymorphisms (SNPs) were selected based on P values and linkage disequilibrium among neighboring SNPs and evaluated in a meta-analysis with 5 independent populations from the Cooperative Health Research in the Region of Augsburg cohort, the British 1958 Birth Cohort, and the Childhood Asthma Management Program cohort. RESULTS Thirteen SNPs located in the region of 3 genes, FCER1A, signal transducer and activator of transcription 6 (STAT6), and IL13, were found to have genome-wide significance in the FHS cohort GWAS. The most significant SNPs from the 3 regions were rs2251746 (FCER1A, P = 2.11 × 10(-12)), rs1059513 (STAT6, P = 2.87 × 10(-8)), and rs1295686 (IL13, P = 3.55 × 10(-8)). Four additional gene regions, HLA-G, HLA-DQA2, HLA-A, and Duffy blood group, chemokine receptor (DARC), reached genome-wide statistical significance in a meta-analysis combining the FHS and replication cohorts, although the DARC association did not appear independent of SNPs in the nearby FCER1A gene. CONCLUSION This GWAS of the FHS cohort has identified genetic loci in HLA genes that might have a role in the pathogenesis of IgE dysregulation and atopy. It also confirmed the association of the known susceptibility loci FCER1A, STAT6, and IL13 for the dysregulation of total IgE.
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Affiliation(s)
- Mark Granada
- The Pulmonary Center, Boston University School of Medicine, Boston, MA
| | - Jemma B. Wilk
- The Pulmonary Center, Boston University School of Medicine, Boston, MA
- Department of Neurology, Boston University School of Medicine, Boston, MA
| | - Marina Tuzova
- The Pulmonary Center, Boston University School of Medicine, Boston, MA
| | - David P. Strachan
- Division of Community Health Science, St George’s, University of London, London SW17 ORE, UK
| | - Stephan Weidinger
- Dept. Of Dermatology and Allergy and ZAUM-Center for Allergy and Environment, Technische Universität München and Helmholtz Zentrum München, Munich, Germany; Dept. of Dermatology, University of Kiel, Kiel, Germany
| | - Eva Albrecht
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Christian Gieger
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Joachim Heinrich
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Blanca E. Himes
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Gary M. Hunninghake
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Juan C. Celedón
- Division of Pediatric Pulmonary Medicine, Allergy and Immunology; Children’s Hospital of Pittsburgh of UPMC; University of Pittsburgh School of Medicine
| | - Scott T. Weiss
- Channing Laboratory, Department of Medicine, Brigham and Women’s Hospital, Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | | | - Lindsay A. Farrer
- Departments of Medicine, Neurology, Ophthalmology, and Genetics and Genomics, Boston University School of Medicine, Departments of Epidemiology and Biostatistics, Boston University School of Public Health, Boston, MA
| | - David M. Center
- The Pulmonary Center, Boston University School of Medicine, Boston, MA
| | - George T. O’Connor
- The Pulmonary Center, Boston University School of Medicine, Boston, MA
- The National Heart, Lung, and Blood Institute’s Framingham Heart Study
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AKHABIR LOUBNA, SANDFORD ANDREWJ. Genome-wide association studies for discovery of genes involved in asthma. Respirology 2011; 16:396-406. [DOI: 10.1111/j.1440-1843.2011.01939.x] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Scirica CV, Celedón JC. Genetics of asthma: potential implications for reducing asthma disparities. Chest 2008; 132:770S-781S. [PMID: 17998341 DOI: 10.1378/chest.07-1905] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Although genetic factors may partly explain the differences in asthma prevalence, morbidity, and mortality among ethnic groups in the United States, few studies of the genetics of asthma have included members of ethnic minority groups. Only one genome-wide linkage analysis of asthma and/or asthma-related phenotypes (conducted by the Collaborative Study on the Genetics of Asthma) has included any members of ethnic minority populations. The interpretation of the findings of genetic association studies of asthma in ethnic minority groups is complicated by reduced statistical power due to small sample sizes; the failure to correct for multiple comparisons; a lack of homogeneity of the populations studied with regard to area of residence, ancestral background, and/or country of origin; a lack of measurement of relevant environmental exposures; and (for case-control studies of genetic association) a lack of detection and control of potential population stratification. Genetic studies may improve our understanding of asthma and lead to new methods to prevent, diagnose, and treat this disease. Limited study of asthma genetics in ethnic minority populations is unacceptable, as it may prevent these groups from benefiting from future developments in asthma management and thus widen existing disparities in asthma care. Future genetic association studies of asthma among ethnic minorities in the United States should include large samples of populations that have been adequately defined with regard to area of residence, self-designated ancestry, and country of origin. These studies should also include an adequate assessment of potentially relevant environmental exposures and (for case-control association studies) population stratification.
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Vaglio A, Martorana D, Maggiore U, Grasselli C, Zanetti A, Pesci A, Garini G, Manganelli P, Bottero P, Tumiati B, Sinico RA, Savi M, Buzio C, Neri TM. HLA-DRB4 as a genetic risk factor for Churg-Strauss syndrome. ACTA ACUST UNITED AC 2007; 56:3159-66. [PMID: 17763415 DOI: 10.1002/art.22834] [Citation(s) in RCA: 138] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To explore the association between HLA alleles and Churg-Strauss syndrome (CSS), and to investigate the potential influence of HLA alleles on the clinical spectrum of the disease. METHODS Low-resolution genotyping of HLA-A, HLA-B, and HLA-DR loci and genotyping of TNFA -238A/G and TNFA -308A/G single-nucleotide polymorphisms were performed in 48 consecutive CSS patients and 350 healthy controls. RESULTS The frequency of the HLA-DRB1*07 allele was higher in the CSS patients than in controls (27.1% versus 13.3%; chi(2) = 12.64, P = 0.0003, corrected P [P(corr)] = 0.0042, odds ratio [OR] 2.42, 95% confidence interval [95% CI] 1.47-3.99). The HLA-DRB4 gene, present in subjects carrying either HLA-DRB1*04, HLA-DRB1*07, or HLA-DRB1*09 alleles, was also far more frequent in patients than in controls (38.5% versus 20.1%; chi(2) = 16.46, P = 0.000058, P(corr) = 0.000232, OR 2.49, 95% CI 1.58-3.09). Conversely, the frequency of the HLA-DRB3 gene was lower in patients than in controls (35.4% versus 50.4%; chi(2) = 7.62, P = 0.0057, P(corr) = 0.0228, OR 0.54, 95% CI 0.35-0.84). CSS has 2 major clinical subsets, antineutrophil cytoplasmic antibody (ANCA)-positive, with features of small-vessel vasculitis, and ANCA-negative, in which organ damage is mainly mediated by tissue eosinophilic infiltration; analysis of HLA-DRB4 in patients categorized by different numbers of vasculitic manifestations (purpura, alveolar hemorrhage, mononeuritis multiplex, rapidly progressive glomerulonephritis, and constitutional symptoms) showed that its frequency strongly correlated with the number of vasculitis symptoms (P for trend = 0.001). CONCLUSION These findings indicate that HLA-DRB4 is a genetic risk factor for the development of CSS and increases the likelihood of development of vasculitic manifestations of the disease.
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Juhn YJ, Kita H, Bagniewski SM, Weaver AL, Pankratz VS, Jacobson RM, Poland GA. Severity of childhood asthma and human leukocyte antigens type. J Asthma 2007; 44:163-8. [PMID: 17454332 DOI: 10.1080/02770900701209632] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
We sought to learn if Class II HLA genes are associated with the severity of asthma in children. We examined a previously recruited cohort of 340 healthy children who had Class II HLA allele data available. We conducted a comprehensive review of their medical records to determine asthma status and, when present, its severity. We found that Class II HLA alleles, which were previously reported to have an association with asthma incidence, appear to have an association as well with asthma severity. These data support our hypothesis that both the incidence and severity of asthma are heritable and that HLA may play an important role in both development and severity of asthma. Because of limited statistical power, our study findings are subject to further investigation.
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Affiliation(s)
- Young J Juhn
- Department of Pediatric and Adolescent Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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Juhn YJ, Kita H, Lee LA, Smith RW, Bagniewski SM, Weaver AL, Pankratz VS, Jacobson RM, Poland GA. Childhood asthma and human leukocyte antigen type. ACTA ACUST UNITED AC 2007; 69:38-46. [PMID: 17212706 DOI: 10.1111/j.1399-0039.2006.00719.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Little is known about the relationship between human leukocyte antigen (HLA) class II genes and family history of asthma or atopy in relation to the incidence of childhood asthma. The objective of the study was to determine whether specific HLA class II genes (e.g., DRB1*03) are associated with asthma and whether such association explains the influences of family history of asthma or atopy on asthma incidence. A stratified random sample of 340 children who had HLA data available from the Rochester Family Measles Study cohort (n= 876) and a convenience sample of healthy children aged 5-12 years were the participants. We conducted comprehensive medical record reviews to determine asthma status of these children. The associations between the presence of specific HLA alleles and development of asthma and the role of family history of asthma or atopy in the association were evaluated by fitting Cox models. The cumulative incidence of asthma by 12 years of age among children who carry HLA DRB1*03 was 33%, compared to 24.2% among those who did not carry this allele. Adjusting for family history of asthma or atopy, gender, low birth weight, season of birth, HLA DRB1*04, and HLA DQB1*0302, the hazards ratio for HLA DRB1*03 carriers was 1.8 (95% confidence interval: 1.1-2.9, P= 0.020). We concluded that the HLA DRB1*03 allele is associated with asthma. However, the HLA class II gene does not explain the influences of family history of asthma or atopy on development of asthma. The mechanism underlying the association between asthma and HLA genes needs to be elucidated.
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Affiliation(s)
- Y J Juhn
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN 55905, USA.
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Demchuk E, Yucesoy B, Johnson VJ, Andrew M, Weston A, Germolec DR, De Rosa CT, Luster MI. A statistical model for assessing genetic susceptibility as a risk factor in multifactorial diseases: lessons from occupational asthma. ENVIRONMENTAL HEALTH PERSPECTIVES 2007; 115:231-4. [PMID: 17384770 PMCID: PMC1817705 DOI: 10.1289/ehp.8870] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2005] [Accepted: 11/13/2006] [Indexed: 05/11/2023]
Abstract
BACKGROUND Incorporating the influence of genetic variation in the risk assessment process is often considered, but no generalized approach exists. Many common human diseases such as asthma, cancer, and cardiovascular disease are complex in nature, as they are influenced variably by environmental, physiologic, and genetic factors. The genetic components most responsible for differences in individual disease risk are thought to be DNA variants (polymorphisms) that influence the expression or function of mediators involved in the pathological processes. OBJECTIVE The purpose of this study was to estimate the combinatorial contribution of multiple genetic variants to disease risk. METHODS We used a logistic regression model to help estimate the joint contribution that multiple genetic variants would have on disease risk. This model was developed using data collected from molecular epidemiology studies of allergic asthma that examined variants in 16 susceptibility genes. RESULTS Based on the product of single gene variant odds ratios, the risk of developing asthma was assigned to genotype profiles, and the frequency of each profile was estimated for the general population. Our model predicts that multiple disease variants broaden the risk distribution, facilitating the identification of susceptible populations. This model also allows for incorporation of exposure information as an independent variable, which will be important for risk variants associated with specific exposures. CONCLUSION The present model provided an opportunity to estimate the relative change in risk associated with multiple genetic variants. This will facilitate identification of susceptible populations and help provide a framework to model the genetic contribution in probabilistic risk assessment.
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Affiliation(s)
- Eugene Demchuk
- Division of Toxicology and Environmental Medicine, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
- Toxicology and Molecular Biology Branch and
| | - Berran Yucesoy
- Toxicology and Molecular Biology Branch and
- Address correspondence to B. Yucesoy, Chronic Inflammatory and Immune Disease Team, Toxicology and Molecular Biology Branch, Health Effects Laboratory Division, NIOSH/CDC, 1095 Willowdale Rd., M/S 3014, Morgantown, WV 26505-2888 USA. Telephone: (304) 285-5993. Fax: (304) 285-5708. E-mail:
| | | | - Michael Andrew
- Biostatistics and Epidemiology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Morgantown, West Virginia, USA
| | | | - Dori R. Germolec
- Toxicology Operations Branch, Environmental Toxicology Program, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
| | - Christopher T. De Rosa
- Division of Toxicology and Environmental Medicine, Agency for Toxic Substances and Disease Registry, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
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Juhn YJ, Kita H, Lee LA, Swanson RJ, Smith R, Bagniewski SM, Weaver AL, Pankratz VS, Jacobson RM, Poland GA. Childhood asthma and measles vaccine response. Ann Allergy Asthma Immunol 2006; 97:469-76. [PMID: 17069101 DOI: 10.1016/s1081-1206(10)60937-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND Asthmatic patients have a TH2-predominant milieu that is associated with humoral immunity. However, little is known about whether humoral immune responses to viral antigens differ between asthmatic and nonasthmatic children. OBJECTIVE To determine whether humoral immune response differs in asthmatic patients vs nonasthmatic patients. METHODS Measles virus specific IgG antibody levels were determined for the Rochester Family Measles Study cohort (n = 876), a convenience sample of healthy children 5 to 12 years of age in Rochester, MN. We conducted comprehensive medical record reviews of 838 children who were eligible for this study. We determined the child's asthma status at the time of determination of antibody levels by applying predetermined criteria for asthma. Comparisons were made using the 2-sample t test or chi2 test. RESULTS Of the 838 children, 156 (18.6%) had asthma at the time of the determination of antibody levels and were not taking systemic steroids within 14 days of specimen collection. Among those with a nonequivocal antibody reading, the seropositive response rates were similar in asthmatic patients and nonasthmatic patients (89.7% vs 90.3%, respectively; P = .83). However, the equivocal response rates were slightly higher among asthmatic patients than nonasthmatic patients (6.4% vs 4.7%, respectively). CONCLUSION Asthmatic children seem to have similar humoral immune responses to measles vaccine as those without asthma. Although the findings reassure health care practitioners, whether this finding is generalizable to other vaccines and whether asthmatic patients with low antibody levels have normal cell-mediated immunity need to be elucidated in future studies.
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Affiliation(s)
- Young J Juhn
- Division of Pediatric and Adolescent Medicine, Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota 55905, USA.
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Lee LC, Zachary AA, Leffell MS, Newschaffer CJ, Matteson KJ, Tyler JD, Zimmerman AW. HLA-DR4 in families with autism. Pediatr Neurol 2006; 35:303-7. [PMID: 17074598 DOI: 10.1016/j.pediatrneurol.2006.06.006] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2005] [Revised: 05/04/2006] [Accepted: 06/19/2005] [Indexed: 01/02/2023]
Abstract
Autoimmune disorders are observed with increased frequency among parents of individuals with autism, particularly mothers. Because there is evidence supporting an association between autoimmune disorders and specific alleles of the human leukocyte antigen (HLA) system, we examined HLA types and subtypes in families with autism. Two groups were studied: 16 families selected from a geographically defined area in eastern Tennessee have males with a diagnosis of autism; and 33 families selected across all regions in the United States have multiple males having autism diagnosis. The HLA-DR4 frequencies of mothers, fathers, and children in these two groups were compared with a reference series of 475 normal, unrelated Caucasians. Results of HLA typing indicated that mothers and their sons in the geographically defined group had a significantly higher frequency of DR4 than normal control subjects (odds ratio = 5.54, 95% confidence interval = 1.74-18.67 and odds ratio = 4.20, 95% confidence interval = 1.37-13.27, respectively). No significant difference in the distribution of HLA alleles was evident between the United States-all region group and control subjects. Findings of this study are consistent with a hypothesis that prenatal maternal-fetal immune interaction can affect fetal brain development in a population residing in a geographically defined region. Such immune interactions may involve HLA and related genes in both genetic and epigenetic mechanisms during pregnancy.
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Affiliation(s)
- Li-Ching Lee
- Center for Autism and Developmental Disabilities Epidemiology, Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland 21205, USA.
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YANG J, QIAO HL, ZHANG YW, JIA LJ, TIAN X, GAO N. HLA-DRB genotype and specific IgE responses in patients with allergies to penicillins. Chin Med J (Engl) 2006. [DOI: 10.1097/00029330-200603020-00005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Corvol H, Flamant C, Vallet C, Clement A, Brouard J. Les gènes modificateurs dans la mucoviscidose. Arch Pediatr 2006; 13:57-63. [PMID: 16274977 DOI: 10.1016/j.arcped.2005.09.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2005] [Accepted: 09/27/2005] [Indexed: 10/25/2022]
Abstract
Cystic fibrosis is the most common lethal autosomal recessive disease among the Caucasian population. It is caused by defects in the CFTR gene (Cystic Fibrosis Transmembrane Conductance Regulator). Although over 1600 disease-causing mutations in the CFTR gene have been described, the highly variable disease phenotype in cystic fibrosis cannot be explained on the basis of this gene alone. Both the environment and other non-CFTR genes are likely to be important. The increased understanding of pathophysiological processes in the cystic fibrosis lung has led to several studies on genes in these pathways. One of the major aims of such studies is to produce targets for novel drug developments.
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Affiliation(s)
- H Corvol
- Service de pneumologie pédiatrique, hôpital Armand-Trousseau, Assistance publique-Hôpitaux de Paris, 26, avenue du Docteur-A.-Netter, 75012 Paris, France.
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Hoffjan S, Nicolae D, Ober C. Association studies for asthma and atopic diseases: a comprehensive review of the literature. Respir Res 2003; 4:14. [PMID: 14748924 PMCID: PMC314398 DOI: 10.1186/1465-9921-4-14] [Citation(s) in RCA: 160] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2003] [Accepted: 12/04/2003] [Indexed: 11/23/2022] Open
Abstract
Hundreds of genetic association studies on asthma-related phenotypes have been conducted in different populations. To date, variants in 64 genes have been reported to be associated with asthma or related traits in at least one study. Of these, 33 associations were replicated in a second study, 9 associations were not replicated either in a second study or a second sample in the same study, and 22 associations were reported in just a single published study. These results suggest the potential for a great amount of heterogeneity underlying asthma. However, many of these studies are methodologically limited and their interpretation hampered by small sample sizes.
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Affiliation(s)
- Sabine Hoffjan
- Departments of Human Genetics, The University of Chicago, Chicago, IL 60637, USA
| | - Dan Nicolae
- Departments of Statistics, The University of Chicago, Chicago, IL 60637, USA
| | - Carole Ober
- Departments of Human Genetics, The University of Chicago, Chicago, IL 60637, USA
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Kalpaklioğlu AF, Turan M. Possible association between cockroach allergy and HLA class II antigens. Ann Allergy Asthma Immunol 2002; 89:155-8. [PMID: 12197571 DOI: 10.1016/s1081-1206(10)61931-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Susceptibility to the development of allergic diseases is known to be associated with genetic components, as well as environmental factors. Although the genetics of immunoglobulin E, atopy, and asthma are complex, genetic markers are needed to identify populations at risk and to plan intervention studies. OBJECTIVE Human leukocyte antigen (HLA) class II genes play a major role in the control of immune response. We investigated the association between HLA class II alleles of DRB1 and DQB1 and the expression of atopy in cockroach-sensitive patients. METHODS Levels of total and specific immunoglobulin E were determined. Skin prick tests were performed. HLA class II typing was performed by the Polymerase chain reaction with sequence-specific primers. Distribution of the HLA genotypes of 32 cockroach-positive atopic patients from the inner city were compared with those of 32 healthy, nonatopic controls of Turkish Caucasian origin. RESULTS HLA class II gene analysis showed an increase of the HLA-DRB1*0701 and HLA-DQB1*02 alleles in atopic patients compared with nonatopic controls (31.3% vs 3.1% and 50% vs 15.6%, Pc < 0.036 and Pc < 0.021, respectively). Conversely, HLA-DRB1*15 allele was encountered more frequently in the control subjects. An association between cockroach sensitivity and cutaneous reactivity to other aeroallergens was observed (P < 0.001). CONCLUSIONS It is suggested that the higher frequencies of HLA-DRB1*0701 and HLA-DQB1*02 alleles are probably related to atopy rather than an association between class II antigens and cockroach allergy in this group of polysensitized, atopic individuals. Further studies may lead to a better understanding of the genetically determined susceptibility, and evaluate the individual effects of each locus (or allele) on sensitivity to specific allergens in the Turkish population.
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Lee HJ, Ha SJ, Han H, Kim JW. Distribution of HLA-A, B alleles and polymorphisms of TAP and LMP genes in Korean patients with atopic dermatitis. Clin Exp Allergy 2001; 31:1867-74. [PMID: 11737038 DOI: 10.1046/j.1365-2222.2001.01042.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Atopic dermatitis has been seen to result from multifactorial inheritance, with interaction between genetic and environmental factors. The genetic association may differ according to the ethnic backgrounds. OBJECTIVE The purpose of this study was to investigate the genetic factors in Korean atopic dermatitis patients by studying the human leucocyte antigen (HLA) class I association and polymorphisms of transporters associated with antigen presentation (TAP) and low-molecular-weight polypeptide (LMP) genes. METHODS HLA-A and B genotyping was performed in 53 atopic dermatitis patients and 184 healthy controls using the standard microlymphocytotoxicity technique. TAP1, TAP2, LMP2, and LMP7 gene polymorphisms were anaylzed using the polymerase chain reaction (PCR)-single strand conformation polymorphism (SSCP), PCR-amplification refractory mutation system (ARMS), and PCR-restriction fragment length polymorphism (RFLP). RESULTS Allele frequency of HLA-A24 was significantly increased in patients with atopic dermatitis compared to controls (P < 0.05). HLA-B alleles showed no differences in distribution between patients and controls. Genotype, phenotype, and allele frequencies of TAP1 gene also revealed no differences in distribution between patients and controls. Analysis of TAP2 gene polymorphisms showed increased frequencies of the TAP2*C allele and TAP2*A/TAP2*C genotype in atopic dermatitis patients compared to controls (P < 0.05). Distribution of LMP2 and LMP7 gene polymorphisms was similar for patients and controls. CONCLUSION This study demonstrates an association of atopic dermatitis with HLA-A24 and TAP2*C alleles in Korean patients. Discrepancy with the previous reports might be related to different patient characteristics and ethnic variations.
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Affiliation(s)
- H J Lee
- Department of Dermatology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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20
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Abstract
Cystic fibrosis is an inherited multi-system disease, characterised by progressive lung disease and pancreatic insufficiency that is classically attributed to the dysfunction of a single gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR). The widely diverse phenotypic expression of CF is likely influenced by other genetic traits separate from the CFTR locus or modifier genes. Many of the genes currently under study as potential modifiers of CF, particularly those which influence the severity of lung disease, are involved in the control of infection, immunity and inflammation. Some of these include HLA class II antigens, mannose-binding lectin, alpha(1)-antitrypsin and alpha(1)-antichymotrypsin, glutathione-S-transferase, nitric oxide synthase type I, TNF-alpha, TGF-beta, IL-1beta and IL-1Ra.
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Affiliation(s)
- J D Acton
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio 45229-3039, USA.
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21
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Cho SH, Kim YK, Oh HB, Jung JW, Son JW, Lee MH, Jee HS, Kim YY, Min KU. Association of HLA-DRB1(*)07 and DRB1(*)04 to citrus red mite (Panonychus citri) and house dust mite sensitive asthma. Clin Exp Allergy 2000; 30:1568-75. [PMID: 11069565 DOI: 10.1046/j.1365-2222.2000.00915.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Specific IgE responses to allergens provide useful models for evaluating the genetic factors that control human immune responses. A recent survey demonstrated that the citrus red mite (Panonychus citri, CRM) is the most important allergen in the development of asthma in citrus farmers. OBJECTIVE The aim of this study was to evaluate whether susceptibility or resistance to CRM-induced asthma was associated with HLA-DRB1 gene. METHODS DNAs were extracted from two groups of unrelated Korean adults living around citrus farms: (1) Ninety-one adults with CRM-sensitive asthma; and (2) 98 exposed, healthy nonatopic controls. Genotypes of HLA-DRB1 alleles were carried out using PCR-based methods. RESULTS Allelic frequency of HLA-DRB1(*)07 was higher in the CRM-sensitive asthmatics compared to the controls (17.6% vs 4.1%, Pc = 0.01). Conversely, the frequency of DRB1*04 was lower in the CRM-sensitive asthmatics compared to the controls (19.8% vs 40.8%, Pc = 0.01). No significant difference was found in the distributions of the other HLA-DRB1 gene-encoded antigens between the two groups. CONCLUSION HLA-DRB1 genes may be involved in the development of CRM-induced asthma. In addition, HLA-DR7 may increase, and DR4 decrease, the risk of developing the asthma in CRM-exposed adults.
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Affiliation(s)
- S H Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Korea
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22
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Mansur AH, Williams GA, Bishop DT, Markham AF, Lewis S, Britton J, Morrison JF. Evidence for a role of HLA DRB1 alleles in the control of IgE levels, strengthened by interacting TCR A/D marker alleles. Clin Exp Allergy 2000; 30:1371-8. [PMID: 10998012 DOI: 10.1046/j.1365-2222.2000.00944.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND MHC class II alleles at human chromosome 6p21.1 and alleles in the TCR A/D locus at human chromosome 14q11.2 have been implicated in susceptibility to specific allergies and the modulation of total serum IgE. It has also been hypothesized that HLA and TCR allelic interactions may have a strong influence on predisposition to allergic disease. OBJECTIVE This study was performed to investigate the influence of HLA-DRB and DQB1 alleles and D14S50 alleles (adjacent to TCR A/D locus on 14q11.2), individually and in-combination, on total serum IgE levels, and on the development of specific allergies. METHODS We performed an association study between HLA-DRB, HLA-DQB1 polymorphisms, D14S50 alleles, total serum IgE expression and specific allergies to house dust mite, grass pollens and cat fur. A sample of 181 individuals was drawn from a larger set of 2415 adults, sampled at random from a district in Nottingham. RESULTS Strong association was observed between HLA-DRB1*0701 allele and high total serum IgE expression (P < 0.001). D14S50 alleles alone showed no evidence for independent association. However, there was a significant interaction between DRB1*0701 and D14S50 allele 170 such that, when both were present, there was a further increase in total serum IgE levels. CONCLUSION This study suggests that DRB1*0701 allele is involved in the modulation of total serum IgE, and that there is an interaction between DRB1*0701 and a marker adjacent to TCR A/D in the control of IgE expression.
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Affiliation(s)
- A H Mansur
- Molecular Medicine Unit, University of Leeds, Clinical Sciences Building, St. James's University Hospital, Leeds, UK
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23
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Chauhan B, Santiago L, Hutcheson PS, Schwartz HJ, Spitznagel E, Castro M, Slavin RG, Bellone CJ. Evidence for the involvement of two different MHC class II regions in susceptibility or protection in allergic bronchopulmonary aspergillosis. J Allergy Clin Immunol 2000; 106:723-9. [PMID: 11031343 DOI: 10.1067/mai.2000.109913] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Allergic bronchopulmonary aspergillosis (ABPA) is a disease with uncertain pathology. Studies have suggested a pathogenic role for T(H)2 cells. Previously, we demonstrated, in a small group of patients, that T(H)2 reactivity to a major Aspergillus fumigatus antigen was restricted by HLA-DR2 or HLA-DR5 alleles. OBJECTIVES We sought to confirm whether susceptibility to ABPA is exclusively associated with HLA-DR locus and to investigate the involvement of HLA-DQ genes in the development of ABPA. METHODS Genomic DNA was extracted from patients with ABPA, patients without ABPA but with positive A fumigatus skin test responses and asthma or cystic fibrosis, and healthy control subjects. HLA-DR and HLA-DQ genes were detected by using low-resolution typing; high-resolution typing was done only on HLA-DR2- and HLA-DR5-positive individuals by using sequence-specific primers (PCR-SSP). RESULTS A significantly higher frequency of HLA-DR2 was observed in patients with ABPA versus those without ABPA (corrected P <.01) or healthy control subjects (corrected P <.01). Genotype analysis revealed that susceptibility to ABPA is associated with HLA-DR2 alleles DRB1*1503 and DRB1*1501 and, to a lesser extent, with the HLA-DR5 allele DRB1*1104. The presence of DR4 or DR7 alleles in non-DR2/5 patients with ABPA suggests that these alleles may also be contributing factors in this disease. Another striking observation was the significantly high frequency of HLA-DQ2 in patients without ABPA (67. 4%) compared with patients with ABPA (20.5%) and normal control subjects (37.7%), suggesting that these alleles may confer protection in the population without ABPA. CONCLUSION These genetic studies suggest that HLA-DR molecules DR2, DR5, and possibly DR4 or DR7 contribute to susceptibility while HLA-DQ2 contributes to resistance and that a combination of these genetic elements determines the outcome of ABPA in patients with cystic fibrosis and asthma.
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Affiliation(s)
- B Chauhan
- Department of Internal Medicine, St Louis University School of Medicine, St Louis, MO 63104, USA
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Abstract
Asthma is the most common chronic childhood disease in developed nations, and it is a complex disease that has high social and economic costs. Asthma and its associated intermediate phenotypes are under a substantial degree of genetic control. The genetic aetiology of asthma offers a means of better understanding its pathogenesis and, thus, improving preventive strategies, diagnostic tools, and therapies. Considerable effort and expense have been expended in attempts to detect genetic loci contributing to asthma susceptibility, and extensive candidate gene studies and a number of whole-genome screens have been undertaken. This article reviews the current state of knowledge of the genetics of asthma, with a focus on genomic approaches to understanding allergic diseases.
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Affiliation(s)
- L J Palmer
- Channing Laboratory, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
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Torío A, Sánchez-Guerrero I, Muro M, Herrero N, Pagán J, Minguela A, Marín L, Moya-Quiles MR, Sanchís MJ, Alvarez-López MR. Analysis of the phenotypic distribution of HLA class I and class II in atopic and non-atopic asthma patients. EUROPEAN JOURNAL OF IMMUNOGENETICS : OFFICIAL JOURNAL OF THE BRITISH SOCIETY FOR HISTOCOMPATIBILITY AND IMMUNOGENETICS 2000; 27:81-5. [PMID: 10792423 DOI: 10.1046/j.1365-2370.2000.00205.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In several studies the HLA system has been implicated in the development of asthma, but the importance of the associations between HLA genes and asthma remains unclear. The aim of this study was to determine the HLA class I and II phenotypic frequencies in a population of asthmatics, and to analyse the relationship between these phenotypes and any type of asthma. We typed HLA class I and II antigens in a series of 189 asthmatic individuals (102 atopic and 87 non-atopic), and in a control population of 150 unrelated healthy Caucasoid donors. When the HLA phenotypic frequencies were compared, no statistical differences were found. Therefore, no definitive HLA association could be established with atopic or non-atopic asthma in the studied population. Abbreviations AA, atopic asthma; FEV1, forced expiratory volume in 1 s; NAA, non-atopic asthma; PCR, polymerase chain reaction; SSOP, sequence-specific oligonucleotide probes; SPT, skin prick test.
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Affiliation(s)
- A Torío
- Immunology Section, University Hospital 'Virgen de la Arrixaca, Murcia, Spain
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Hu C, Hsu PN, Lin RH, Hsieh KH, Chua KY. HLA DPB1*0201 allele is negatively associated with immunoglobulin E responsiveness specific for house dust mite allergens in Taiwan. Clin Exp Allergy 2000; 30:538-45. [PMID: 10718851 DOI: 10.1046/j.1365-2222.2000.00752.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND House dust mite (HDM) Dermatophagoides pteronyssinus is the most important source of indoor allergens that cause allergic diseases in Taiwan. We prepared purified HDM allergens (Der p 1, Der p 2 and Der p 5) to detect allergen-specific immunoglobulin (Ig) E responsiveness among a large number of test subjects. The robust genetic typing system for HLA class II genes also facilitated the study on association of HLA and allergic response toward HDM. OBJECTIVE This study intended to investigate the association between HLA class II alleles and the IgE responsiveness to the major allergens from HDM, D. pteronyssinus. METHODS Two hundred and forty-eight subjects were selected for HLA association study. Plasma HDM allergen (Der p 1, Der p 2, Der p 5) -specific IgE and Der p 2-specific IgG antibodies were detected by ELISA, while HLA class II -DRB1, -DQA1, -DQB1, -DPB1 genetic polymorphism was determined by polymerase chain reaction/sequence-specific oligonucleotide probe hybridization (PCR/SSOPH). Statistical comparison of the allelic distribution of each HLA class II genes among the individuals with/without HDM allergen-specific IgE and IgG antibodies were performed. RESULTS There was no significant association between HLA DRB1, DQB1, DQA1 alleles and HDM-specific IgE responsiveness noted. Only DRB1*0803 and the linked DQA1*0103 alleles showed positive association with Der p 5-specific IgE responsiveness. However, we found that HLA-DPB1*1301 predisposed subjects to IgE responsiveness to HDM Der p 5. HLA DPB1*0501 was weakly associated with the IgE responsiveness to HDM Der p 1 and Der p 5. There was a strong negative association between the HLA-DPB1*0201 allele with IgE responsiveness to Der p 1 (OR: 0.30, P </= 0.0001, P </= 0.0007, Pc </= 0.010). CONCLUSION We clearly observed the association between HLA DPB1 alleles and specific IgE responsiveness to HDM major allergens. The molecular mechanism of HLA-DPB1*0201 involvement in protecting subjects from HDM-specific IgE responsiveness awaits further investigation.
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Affiliation(s)
- C Hu
- Graduate Institute of Microbiology; School of Medical Technology; Graduate Institute of Immunology; Department of Paediatrics, College of Medicine, National Taiwan University, Taiwan
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Affiliation(s)
- A J Sandford
- University of British Columbia Pulmonary Research Laboratory, St. Paul's Hospital, Vancouver, British Columbia, Canada
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Aron Y, Bienvenu T, Hubert D, Dusser D, Dall'Ava J, Polla BS. HLA-DR polymorphism in allergic bronchopulmonary aspergillosis. J Allergy Clin Immunol 1999; 104:891-2. [PMID: 10518840 DOI: 10.1016/s0091-6749(99)70306-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Y Aron
- Laboratoire de Physiologie Respiratoire, UFR, Cochin-Port Royal, Université Paris V, France
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Affiliation(s)
- J W Holloway
- Human Genetics, University of Southampton, Southampton General Hospital, UK
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Aron Y, Polla BS, Bienvenu T, Dall'ava J, Dusser D, Hubert D. HLA class II polymorphism in cystic fibrosis. A possible modifier of pulmonary phenotype. Am J Respir Crit Care Med 1999; 159:1464-8. [PMID: 10228112 DOI: 10.1164/ajrccm.159.5.9807046] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Evolution of lung damage is highly variable in cystic fibrosis (CF) even in patients with the same cystic fibrosis transmembrane conductance regulator (CFTR) mutations. The analysis of genetic factors other than CFTR may help our understanding of genotype-phenotype relationships in CF. As human leukocyte antigen (HLA) class II polymorphism has been associated with a number of diseases including autoimmune and inflammatory diseases, asthma, and allergy, we investigated the possibility that HLA polymorphism contributes to CF-associated pulmonary inflammation. Among the 98 adult CF patients tested, the genotypic frequencies of DR4 and DR7 alleles (serologic group DR53) and DR7/ DQA*0201 haplotype were higher than in 39 selected control subjects without atopy (p </= 10(-)6, relative risk [RR] = 22, and p </= 5.10(-)4, RR = 27, respectively) and in a random population. No significant difference of these allelic distributions was found according to the CFTR genotype. In the CF patients, the DR7 allele was significantly associated with an increase in total IgE and with chronic Pseudomonas aeruginosa colonization (100% of DR7 versus 83% of non-DR7 patients being colonized, p < 0.05). Our results suggest that genetic factors known to modulate the immune response might contribute to chronic infection with Pseudomonas, increased total IgE, and pulmonary outcome in CF.
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Affiliation(s)
- Y Aron
- Laboratoire de Physiologie Respiratoire, Service de Pneumologie, Laboratoire de Biochimie et Génétique Moléculaire, Universitaire Cochin Port-Royal, Cedex, France
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Mariéthoz E, Lacroix JS, Moeschler MB, Hogendijk S, Spertini F, Polla BS. Allergy and the environment: a meeting report. REVIEWS ON ENVIRONMENTAL HEALTH 1999; 14:63-78. [PMID: 10485130 DOI: 10.1515/reveh.1999.14.2.63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Affiliation(s)
- E Mariéthoz
- Centre Universitaire d'Ecologie Humaine, Faculté de Médicine, University of Geneva, Switzerland
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Aron Y, Busson M, Polla BS, Dusser D, Lockhart A, Swierczewski E, Favatier F. Analysis of hsp70 gene polymorphism in allergic asthma. Allergy 1999; 54:165-70. [PMID: 10221440 DOI: 10.1034/j.1398-9995.1999.00859.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Allergic asthma is a multifactorial and probably multigenic inflammatory disease of the upper airways, and has been associated with the HLA class II alleles DR4 and DR7. Here we investigated possible associations with other polymorphic susceptibility/resistance genes located within the major histocompatibility complex, i.e., the genes coding the major 70-kDa heat-shock proteins (HSP; Hsp70) hsp70-1, hsp70-2, and hsp70-HOM, whose products are overexpressed in the bronchi of asthmatic patients. METHODS Genomic DNA was extracted from peripheral blood lymphocytes or buccal epithelial cells of 48 patients with allergic asthma and 31 selected nonatopic control subjects, in whom we previously reported a strong association of atopy with DR4/DR7 alleles. RESULTS No evidence was found for an independent role of hsp70 gene polymorphism in susceptibility to allergic asthma. However, hsp70 alleles might be involved in extended haplotypes of HLA markers. CONCLUSIONS Our data suggest that Hsp70 overexpression in asthma results from complex interactions between environmental exposures and genetic background rather than from specific genetic variations in hsp70 genes.
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Affiliation(s)
- Y Aron
- Laboratory of Respiratory Physiology, UFR Cochin Port-Royal, Université Paris V, France
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Torres-Galván MJ, Quiralte J, Blanco C, Castillo R, Carrillo T, Pérez-Aciego P, Sánchez-García F. Linkage of house dust mite allergy with the HLA region. Ann Allergy Asthma Immunol 1999; 82:198-203. [PMID: 10071525 DOI: 10.1016/s1081-1206(10)62597-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Atopy is a multifactorial disease, the pathogenesis of which is influenced by both genetic and environmental conditions. Genes in the HLA region have been involved in the control of the IgE response. OBJECTIVE In order to investigate whether allergy to house dust mite is associated with HLA in our population, we performed sib-pair analysis in 18 families and a case/control study of 161 non-related individuals. METHODS Levels of total and specific IgE were determined, skin-prick tests were carried out and clinical history was reviewed for every subject in the study. HLA class II typing was performed by the polymerase chain reaction with sequence specific primers. RESULTS We observed a significant difference from expected values in haplotypes shared by affected sibs; however, the case/control study did not reveal any association with any particular allele. CONCLUSION These results suggest that any particular HLA-DRB1/DQA1/DQB1 allele is responsible for the development of allergy to house dust mite in the Spanish population. Some other locus in or close to the HLA region might be involved, e.g., the tumour necrosis factor gene, a possibility that would explain the significant difference from expected values in the segregation of HLA haplotypes.
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MESH Headings
- Adolescent
- Adult
- Alleles
- Allergens/adverse effects
- Animals
- Antigens, Dermatophagoides
- Asthma/etiology
- Asthma/genetics
- Asthma/immunology
- Child
- Conjunctivitis/etiology
- Conjunctivitis/genetics
- Conjunctivitis/immunology
- Dust/adverse effects
- Female
- Genetic Linkage
- Glycoproteins/immunology
- HLA Antigens/genetics
- HLA Antigens/immunology
- Haplotypes/genetics
- Histocompatibility Testing
- Humans
- Hypersensitivity, Immediate/etiology
- Hypersensitivity, Immediate/genetics
- Hypersensitivity, Immediate/immunology
- Immunoglobulin E/blood
- Major Histocompatibility Complex/genetics
- Male
- Middle Aged
- Mites/immunology
- Polymerase Chain Reaction
- Rhinitis, Allergic, Perennial/etiology
- Rhinitis, Allergic, Perennial/genetics
- Rhinitis, Allergic, Perennial/immunology
- Skin Tests
- Spain/epidemiology
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Affiliation(s)
- M J Torres-Galván
- Research Unit, Hospital Nuestra Señora del Pino, Las Palmas de Gran Canaria, Canary Islands, Spain
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Lara-Marquez ML, Yunis JJ, Layrisse Z, Ortega F, Carvallo-Gil E, Montagnani S, Makhatadze NJ, Pocino M, Granja C, Yunis E. Immunogenetics of atopic asthma: association of DRB1*1101 DQA1*0501 DQB1*0301 haplotype with Dermatophagoides spp.-sensitive asthma in a sample of the Venezuelan population. Clin Exp Allergy 1999; 29:60-71. [PMID: 10051703 DOI: 10.1046/j.1365-2222.1999.00461.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Genes linked to the major histocompatibility complex (MHC), have been implicated in atopic asthma. Asthma is highly prevalent in the Venezuelan population (estimated at 20%) and genetic markers are needed to identify populations at risk and plan intervention strategies. OBJECTIVE To study the influence of the MHC class I and class II genes in the susceptibility to atopic asthma. METHODS MHC-class I HLA-A, -C, -B and MHC-class II HLA-DR, -DQ, -DP gene haplotype frequencies were determined in 135 Venezuelan mestizos, 71 belong to 20 atopic asthmatic families and 64 unrelated controls. The index cases were 20 atopic asthmatics with positive skin-prick tests and specific serum immunoglobulin E (IgE) for Dermatophagoides pteronyssinus (Der p) and Dermatophagoides farinae (Der f). To ascertain the genes associated with susceptibility to atopy and/or asthma, two control groups were studied, 41 non-atopic subjects with skin-prick negative test, and undetectable levels of specific IgE and 23 non-asthmatic atopic subjects with detectable specific IgE to Der p and Der f. A linkage analysis was performed in those families with two or more atopic siblings (with or without asthma). RESULTS MHC-class I genes analysis showed that HLA-Cw7 was absent in the asthmatic patients studied, whereas the frequency of this allele was 14.3% in non-atopic controls (P = 0.0 17, PC = 0.19) and 20.8% in the atopic controls (P = 0.0066, PC = 0.07). MHC-class II gene analysis showed a significant increase of the HLA-DRB1*11 in the asthmatic patients compared with non-atopic controls (allele frequencies of 25.6 vs 4.4% P = 0.0017, PC = 0.02). There were no significant differences among asthmatic and atopic controls in the frequency of HLA-DRB1*11 (25.6 vs 17.4%). In contrast, the HLA-DRB1*1101+ haplotypes were significantly higher in asthmatics compared with atopic and non-atopic controls (19.6% vs 2.2% vs 2.3%, PC<0.05). The HLA-DRB1*1101, DQA1*0501, DQB1*0301 haplotype was found significantly increased in the patients vs non-atopic controls (15.4 vs 1.1%, PC< 0.01). The serum levels of specific IgE were detectable in both atopic asthmatics and atopic controls; however, it was higher in atopic asthmatics vs atopic controls Der p (median, 58.7 vs 2.7 kU/L, P<0.001) and Der f (median, 46.9 vs 2.7 kU/L, P<0.001). No linkage between MHC genes and mite-atopy could be documented on informative families with two or more atopic siblings. CONCLUSIONS We have identified an association between the haplotype HLA-DRB1*1101, DQA1*0501, DQB1*0301 and atopic asthma that confers susceptibility to develop mite-sensitive asthma to atopics (relative risk, RR 8.2), and to non-atopic controls (RR = 15.8) that carry this haplotype. Conversely, the allele HLA-Cw7 was absent in the asthmatics studied and had higher frequencies in the atopic (RR = 0.05) and non-atopic (RR = 0.08) controls. Thus, it may have a protective role for developing atopic asthma in the population studied.
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Affiliation(s)
- M L Lara-Marquez
- Departamento de Alergia e Immunologia, Hospital Militar Carlos Arvelo, Sta Fe de Bogota, Colombia
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Romano A, De Santis A, Romito A, Di Fonso M, Venuti A, Gasbarrini GB, Manna R. Delayed hypersensitivity to aminopenicillins is related to major histocompatibility complex genes. Ann Allergy Asthma Immunol 1998; 80:433-7. [PMID: 9609616 DOI: 10.1016/s1081-1206(10)62997-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Although in some cases delayed hypersensitivity may be observed, beta-lactam antibiotics frequently induce immediate allergic IgE-mediated reactions with the specificity localized in the acyl-side chain structure. Generally, delayed immunologic reactions are related to sensitized T lymphocytes and major histocompatibility complex restricted. OBJECTIVE To investigate the prevalence of HLA class I and II antigens in patients with delayed hypersensitivity to aminopenicillins in order to evaluate a relationship between major histocompatibility complex immune response genes and aminopenicillins hypersensitivity. METHODS We assessed 24 patients with history of delayed hypersensitivity to aminopenicillins using (1) skin test with penicilloyl polylysine, minor determinant mixture, benzylpenicillin, amoxicillin, and ampicillin; (2) patch tests with benzylpenicillin, amoxicillin, and ampicillin; (3) RAST for penicilloyls G and V; and (4) oral challenges with amoxicillin, ampicillin, and penicillin V in 18/24 patients. All patients were typed by microlymphotoxicity standard test for HLA class I and II antigens. Statistical analysis by chi2 test 2 x 2 contingency tables, according to Svejgaard, were used for comparison between patients and random Italian population (522 subjects). RESULTS In the patients group we found higher prevalence of HLA A2 (12/24 = 50%, RR = 6.76 P < .001, EF = 0.425), DRw52 (20/24 = 83.3%, RR = 9.28, P < .001, EF = 0.74), and lower frequency of DR4 (3/24 = 12% ns). CONCLUSIONS These data suggest that the immune mechanisms involved in adverse reactions to aminopenicillins in vivo are related to genetic markers of immune response and confirms that the presentation of penicillin-hapten determinants to lymphocyte is major histocompatibility complex restricted.
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Affiliation(s)
- A Romano
- Department of Internal Medicine, Catholic University, Rome, Italy
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Howell WM, Turner SJ, Hourihane JO, Dean TP, Warner JO. HLA class II DRB1, DQB1 and DPB1 genotypic associations with peanut allergy: evidence from a family-based and case-control study. Clin Exp Allergy 1998; 28:156-62. [PMID: 9515587 DOI: 10.1046/j.1365-2222.1998.00224.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Peanut is one of the most common foods provoking allergic reactions and is the most frequent cause of fatal and near-fatal food-induced anaphylaxis. However, as yet, little is known of the genetic and immunological mechanisms which underly peanut allergy. OBJECTIVE Based on findings in other allergic diseases, we have investigated whether particular human leucocyte antigen (HLA) class II genetic polymorphisms contribute to the development of peanut allergy. METHODS All individuals from 37 families each containing one or more peanut allergic individuals, plus nine unrelated patients (161 individuals in total, defined as the study group) were typed for the HLA class II DRB1, DQB1 and DPB1 loci, by PCR-based techniques. Genotype frequencies were compared with those found in 293 unrelated controls. RESULTS Four class II genotypes (DRB1*08 (13.7% vs 4.8%; Pc = 0.026), DRB1*08/12 tyr 16 (22.4% vs 8.2%; Pc = 0.021), DQB1*04 (12.2% vs 2.7%; Pc = 0.0026) and DPB1*0301 (49.1 vs 22.5%; Pc = 0.00062)) were present at a significantly higher frequency in the study group compared with controls. Three of these genotypes (DRB1*08 (18.0%; Pc = 0.027), DRB1*08/12 tyr16 (24.0%; Pc = 0.029) and DQB1*04 (16.7%; Pc = 0.0029)) were also significantly increased in peanut allergic individuals compared with controls. In addition, two genotypes (DPB1*0101 and 0201) were significantly decreased in frequency in the overall study group, but not specifically in peanut allergic individuals. CONCLUSION While other genetic factors may be important, results from this study indicate that HLA class II genetic polymorphism may play a role in determining susceptibility to peanut allergy.
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Affiliation(s)
- W M Howell
- Wessex Histocompatibility Laboratory, Southampton General Hospital, UK
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