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Romero-Sánchez C, Hernández N, Chila-Moreno L, Jiménez K, Padilla D, Bello-Gualtero JM, Bautista-Molano W. HLA-B Allele, Genotype, and Haplotype Frequencies in a Group of Healthy Individuals in Colombia. J Clin Rheumatol 2021; 27:S148-S152. [PMID: 33790206 DOI: 10.1097/rhu.0000000000001671] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The sequencing of alleles of the HLA-B, a human leukocyte antigen (HLA) class I gene, was established as the most polymorphic of chromosome 6 and of the entire human genome. In this locus, the HLA-B*27 allele is highly polymorphic and has clinical relevance. Literature about the subtypes and singular frequency of these alleles in Colombia's healthy population is scarce. OBJECTIVE The aim of this study was to establish the HLA-B allele, genotype, and haplotype frequencies in a healthy Colombian population and analyze their association with the sex and geographical distribution of the individuals studied. METHODS This is a nonexperimental and descriptive study. The data from whole-blood samples whose HLA genes were genotyped by protocol with the Luminex 100/200 xMAP technology were evaluated. HLA-B*27 positivity was confirmed by the new-generation sequencing technology. The associations between the HLA-B alleles and demographic variables were evaluated by χ2 and Fisher exact tests. RESULTS Twenty-seven HLA-B genotypes were identified in 255 individuals, with the highest frequencies for HLA-B*35 (44.7%), B*40 (19.6%), and B*44 (16.8%). Additionally, 89 HLA-B alleles were found; the most common were HLA-B*35:01 (6.7%) and B*40:02 (6.5%). Nine individuals tested positive for the HLA-B*27 allele with genotype and allele frequencies of 3.5% and 1.8%, respectively; the HLA-B*27:05:02 subtype predominated. CONCLUSIONS Here, we report the most common HLA-B allele, genotype, and haplotype frequencies in a healthy Colombian population group and analyzed their association with the sex and geographical distribution of the individuals studied. Results for the HLA-B*27 allele confirm racial mixing in Colombia with a high degree of Caucasian influence, as well as the repopulation of Colombia's central region, attributed to the migration phenomena. Results agree with data published in Colombia that was obtained from cord blood samples.
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Affiliation(s)
| | - Natalia Hernández
- Bacteriology Program, Faculty of Basic Sciences, Universidad Colegio Mayor de Cundinamarca, Bogotá
| | - Lorena Chila-Moreno
- Clinical Immunology Group, Hospital Militar Central, School of Medicine, Universidad Militar Nueva Granada
| | - Karen Jiménez
- Pediatric Rheumatology Program, Faculty of Medicine, Universidad El Bosque
| | - Diana Padilla
- Rheumatology Program, Faculty of Medicine Universidad de la Sabana, Universidad de La Sabana, Chia, Colombia
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Kumar S, Doss RSA, Rebekah G, Mathews NS, Danda D, Mathew J, Daniel D. Prevalence of HLA-B*27 subtypes in the Tamil population of India with Ankylosing spondylitis and its correlation with clinical features. Hum Immunol 2021; 82:404-408. [PMID: 33773810 DOI: 10.1016/j.humimm.2021.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/08/2021] [Accepted: 03/05/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION HLA-B*27 is strongly associated with Ankylosing spondylitis (AS). Its subtypes show considerable geographic and ethnic difference. The main aim of this study was to assess the frequency of subtypes of HLA-B*27 in the Indian Tamil AS patients. METHODS AND MATERIALS Adult AS patients positive for HLA-B*27 were considered for the study. The high-resolution typing to define HLA-B*27 subtypes were done using Invitrogen B kits from One Lambda (SeCore® Sequencing Kits, Thermo Fisher, United States). RESULTS AND CONCLUSION Prevalence of subtypes identified were HLA-B*27:04 (52.2%), HLA-B*27:05 (41.6%), HLA-B*27:07 (3.5%) and HLA-B*27:02 (2.7%). All subtypes showed disease predisposition for males. The most common extra articular manifestation seen was enthesitis in HLA-B*27:04 and HLA-B*27:05. Uveitis was mainly associated with HLA-B*27:05 and dactylitis with HLA-B*27:04. A significant peripheral joints involvement for female and axial joint involvement for males was seen in HLA-B*27:04. Our study establishes the prevalence of HLA-B*27 subtypes and the associated clinical phenotypes among the Indian Tamil population. Considering the variability of presentation, organ involvement, and disease course in different subtypes and across ethnicities it is critical to define these associations in the ethnic populations we treat for their appropriate care considering the significant negative health and socioeconomic effects of AS.
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Affiliation(s)
- Snehil Kumar
- Department of Transfusion Medicine and Immunohaematology, Christian Medical College, Vellore, India.
| | - R Sam Arul Doss
- Department of Transfusion Medicine and Immunohaematology, Christian Medical College, Vellore, India
| | - Grace Rebekah
- Department of Biostatistics, Christian Medical College, Vellore, India
| | - Nitty S Mathews
- Department of Transfusion Medicine and Immunohaematology, Christian Medical College, Vellore, India
| | - Debashish Danda
- Department of Clinical Immunology and Rheumatology, Christian Medical College, Vellore, India
| | - John Mathew
- Department of Clinical Immunology and Rheumatology, Christian Medical College, Vellore, India
| | - Dolly Daniel
- Department of Transfusion Medicine and Immunohaematology, Christian Medical College, Vellore, India
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Spondyloarthritis in North Africa: an update. Clin Rheumatol 2021; 40:3401-3410. [PMID: 33559776 DOI: 10.1007/s10067-021-05630-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 12/06/2020] [Accepted: 02/02/2021] [Indexed: 01/17/2023]
Abstract
Spondyloarthritis (SpA) has been less well studied than rheumatoid arthritis in North Africa, due to a belief that it is rare and benign in certain populations. The main genetic trait of SpA is its association with human leukocyte antigen (HLA)-B27. The distribution of this allele largely explains the prevalence and severity of SpA. The prevalence of HLA-B27 in the general population of North Africa is estimated at about 4%, and rises to about 60% among people affected with SpA. Coxitis is one of the main features of North African SpA, but the response to treatment is comparable to the literature from the West. The major challenge in North Africa remains accessibility to specialized care and means of early diagnosis. Prevalent infections in North Africa do not seem to be a major obstacle to optimal treatment strategies.
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Güneşaçar R, Kelleci BM, Özkars MY, Adanır İ, Çelik M. PCR-SSP tekniğine dayalı laboratuvar yapımı HLA-B*27 optimizasyonu ve test kiti geliştirilmesi. CUKUROVA MEDICAL JOURNAL 2018. [DOI: 10.17826/cumj.429882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Adland E, Hill M, Lavandier N, Csala A, Edwards A, Chen F, Radkowski M, Kowalska JD, Paraskevis D, Hatzakis A, Valenzuela-Ponce H, Pfafferott K, Williams I, Pellegrino P, Borrow P, Mori M, Rockstroh J, Prado JG, Mothe B, Dalmau J, Martinez-Picado J, Tudor-Williams G, Frater J, Stryhn A, Buus S, Teran GR, Mallal S, John M, Buchbinder S, Kirk G, Martin J, Michael N, Fellay J, Deeks S, Walker B, Avila-Rios S, Cole D, Brander C, Carrington M, Goulder P. Differential Immunodominance Hierarchy of CD8 + T-Cell Responses in HLA-B*27:05- and -B*27:02-Mediated Control of HIV-1 Infection. J Virol 2018; 92:e01685-17. [PMID: 29167337 PMCID: PMC5790925 DOI: 10.1128/jvi.01685-17] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 11/03/2017] [Indexed: 11/22/2022] Open
Abstract
The well-characterized association between HLA-B*27:05 and protection against HIV disease progression has been linked to immunodominant HLA-B*27:05-restricted CD8+ T-cell responses toward the conserved Gag KK10 (residues 263 to 272) and polymerase (Pol) KY9 (residues 901 to 909) epitopes. We studied the impact of the 3 amino acid differences between HLA-B*27:05 and the closely related HLA-B*27:02 on the HIV-specific CD8+ T-cell response hierarchy and on immune control of HIV. Genetic epidemiological data indicate that both HLA-B*27:02 and HLA-B*27:05 are associated with slower disease progression and lower viral loads. The effect of HLA-B*27:02 appeared to be consistently stronger than that of HLA-B*27:05. In contrast to HLA-B*27:05, the immunodominant HIV-specific HLA-B*27:02-restricted CD8+ T-cell response is to a Nef epitope (residues 142 to 150 [VW9]), with Pol KY9 subdominant and Gag KK10 further subdominant. This selection was driven by structural differences in the F pocket, mediated by a polymorphism between these two HLA alleles at position 81. Analysis of autologous virus sequences showed that in HLA-B*27:02-positive subjects, all three of these CD8+ T-cell responses impose selection pressure on the virus, whereas in HLA-B*27:05-positive subjects, there is no Nef VW9-mediated selection pressure. These studies demonstrate that HLA-B*27:02 mediates protection against HIV disease progression that is at least as strong as or stronger than that mediated by HLA-B*27:05. In combination with the protective Gag KK10 and Pol KY9 CD8+ T-cell responses that dominate HIV-specific CD8+ T-cell activity in HLA-B*27:05-positive subjects, a Nef VW9-specific response is additionally present and immunodominant in HLA-B*27:02-positive subjects, mediated through a polymorphism at residue 81 in the F pocket, that contributes to selection pressure against HIV.IMPORTANCE CD8+ T cells play a central role in successful control of HIV infection and have the potential also to mediate the eradication of viral reservoirs of infection. The principal means by which protective HLA class I molecules, such as HLA-B*27:05 and HLA-B*57:01, slow HIV disease progression is believed to be via the particular HIV-specific CD8+ T cell responses restricted by those alleles. We focus here on HLA-B*27:05, one of the best-characterized protective HLA molecules, and the closely related HLA-B*27:02, which differs by only 3 amino acids and which has not been well studied in relation to control of HIV infection. We show that HLA-B*27:02 is also protective against HIV disease progression, but the CD8+ T-cell immunodominance hierarchy of HLA-B*27:02 differs strikingly from that of HLA-B*27:05. These findings indicate that the immunodominant HLA-B*27:02-restricted Nef response adds to protection mediated by the Gag and Pol specificities that dominate anti-HIV CD8+ T-cell activity in HLA-B*27:05-positive subjects.
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Affiliation(s)
- Emily Adland
- Department of Paediatrics, University of Oxford, United Kingdom
| | - Matilda Hill
- Department of Paediatrics, University of Oxford, United Kingdom
| | - Nora Lavandier
- Department of Paediatrics, University of Oxford, United Kingdom
| | - Anna Csala
- Department of Paediatrics, University of Oxford, United Kingdom
| | - Anne Edwards
- Department of GU Medicine, The Churchill Hospital, Oxford University NHS Foundation Trust, Oxford, United Kingdom
| | - Fabian Chen
- Department of Sexual Health, Royal Berkshire Hospital, Reading, United Kingdom
| | - Marek Radkowski
- Department of Immunopathology of Infectious and Parasitic Diseases, Hospital for Infectious Diseases, Medical University of Warsaw, Warsaw, Poland
| | - Justyna D Kowalska
- Department of Immunopathology of Infectious and Parasitic Diseases, Hospital for Infectious Diseases, Medical University of Warsaw, Warsaw, Poland
| | | | - Angelos Hatzakis
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Humberto Valenzuela-Ponce
- Centre for Research in Infectious Diseases, National Institute of Respiratory Diseases, Mexico City, Mexico
| | - Katja Pfafferott
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Ian Williams
- Centre for Sexual Health and HIV Research, Mortimer Market Centre, London, United Kingdom
| | - Pierre Pellegrino
- Centre for Sexual Health and HIV Research, Mortimer Market Centre, London, United Kingdom
| | - Persephone Borrow
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Masahiko Mori
- Department of Paediatrics, University of Oxford, United Kingdom
| | - Jürgen Rockstroh
- Department of Medicine I, University Hospital Bonn, Bonn, Germany
| | - Julia G Prado
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona, Spain
| | - Beatriz Mothe
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona, Spain
- University of Vic-Central University of Catalonia (UVic-UCC), Vic, Barcelona, Spain
| | - Judith Dalmau
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona, Spain
| | - Javier Martinez-Picado
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona, Spain
- University of Vic-Central University of Catalonia (UVic-UCC), Vic, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | | | - John Frater
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Oxford Martin School, University of Oxford, Oxford, United Kingdom
| | - Anette Stryhn
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Soren Buus
- Department of Immunology and Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Gustavo Reyes Teran
- Centre for Research in Infectious Diseases, National Institute of Respiratory Diseases, Mexico City, Mexico
| | - Simon Mallal
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mina John
- Institute of Immunology and Infectious Diseases, Murdoch University, Perth, Australia
| | - Susan Buchbinder
- San Francisco Department of Public Health, HIV Research Section, San Francisco, California, USA
| | - Gregory Kirk
- Department of Epidemiology, Johns Hopkins University, Bloomberg School of Public Health, Baltimore, Maryland, USA
| | - Jeffrey Martin
- Department of Epidemiology and Biostatistics, University of California, San Francisco, California, USA
| | - Nelson Michael
- U.S. Military HIV Research Program, Walter Reed Army Institute of Research, Silver Spring, Maryland, USA
| | | | - Steve Deeks
- San Francisco Department of Public Health, HIV Research Section, San Francisco, California, USA
| | - Bruce Walker
- Ragon Institute of MGH, MIT and Harvard, Boston, Massachusetts, USA
| | - Santiago Avila-Rios
- Centre for Research in Infectious Diseases, National Institute of Respiratory Diseases, Mexico City, Mexico
| | - David Cole
- Cardiff University School of Medicine, Heath Park, Cardiff, United Kingdom
- Immunocore Limited, Abingdon, Oxfordshire, United Kingdom
| | - Christian Brander
- AIDS Research Institute IrsiCaixa, Institut d'Investigació en Ciències de la Salut Germans Trias i Pujol (IGTP), Universitat Autònoma de Barcelona, Badalona, Spain
- University of Vic-Central University of Catalonia (UVic-UCC), Vic, Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain
| | - Mary Carrington
- Ragon Institute of MGH, MIT and Harvard, Boston, Massachusetts, USA
- Cancer and Inflammation Program, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Maryland, USA
| | - Philip Goulder
- Department of Paediatrics, University of Oxford, United Kingdom
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Chheda P, Warghade S, Mathias J, Dama T, Matkar S, Shah N, Bendre R. HLA-B27 testing: A journey from flow cytometry to molecular subtyping. J Clin Lab Anal 2018; 32:e22382. [PMID: 29349813 DOI: 10.1002/jcla.22382] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 12/12/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Determination of HLA-B27 status plays an important role as adjuvant in suspected cases for diagnosis of Ankylosing Spondilytis (AS). Objectives of this study were to evaluate (i) flow cytometry method in comparison with DNA microarray for HLA-B27 typing and (ii) EUROArray HLA-B27 Direct assay for HLA-B27 allele detection along with discrimination of AS/non-AS subtypes in Indian population. METHODS A total of 7543 patients with a presumptive clinical diagnosis of AS were referred for screening of HLA-B27. All samples were initially tested by flow cytometry, and based on its findings, 1560 samples were analyzed for the presence of HLA-B27 allele by microarray technology. A subset of samples (n = 200) were further tested by DNA sequencing for identification of HLA-B27 subtypes. RESULTS Screening of HLA-B27 by flow cytometry reported 1551 positive (20.56%) and 5556 negative (73.65%) cases. Remaining 436 (5.78%) samples were identified within equivocal zone. Of cases (n = 1560) analyzed by microarray method, 1333 (85.44%) and 227 (14.55%) were detected microarray positive and negative, respectively. DNA sequencing identified HLA-B*27:07 as the predominant subtype among cases showing ex2 positivity by microarray method. Of 200 cases, 20 cases (14 of HLA-B*07 and 6 of HLA-B*37) of HLA-B27 cross-reactive subtypes were also identified. CONCLUSION We recommend DNA typing as a complementary tool along with flow cytometry to accomplish successful HLA-B27 phenotype determination. This is the first study among Indian population to evaluate efficacy of EUROArray to detect B27 allele and its potential to indicate the presence of nondisease-associated alleles in Indian population.
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Affiliation(s)
- Pratiksha Chheda
- Department of Molecular Pathology, Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
| | - Sandeep Warghade
- Department of Hematology, Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
| | - Jyothi Mathias
- Department of Hematology, Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
| | - Tavisha Dama
- Department of Molecular Pathology, Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
| | - Sunmeet Matkar
- Medical Communications, Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
| | - Nilesh Shah
- Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
| | - Rajesh Bendre
- Department of Hematology, Metropolis Healthcare Ltd, Mumbai, Maharashtra, India
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Al-Qadi R, Salih SF, AlDoski HJ, Nabeel M, Ali JH, Khasho D, Yaqo RT. Association of HLA-B*27 with ankylosing spondylitis in Kurdish patients. Int J Rheum Dis 2015; 20:980-984. [DOI: 10.1111/1756-185x.12605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Rawand Al-Qadi
- Department of Immunogenetics; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
| | - Saadallah Fareeq Salih
- Department of Immunogenetics; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
| | - Heleen Jalal AlDoski
- Department of Immunogenetics; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
| | - Mariam Nabeel
- Department of Immunogenetics; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
| | - Jumaa Hussein Ali
- Department of Immunogenetics; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
| | - Djwar Khasho
- Department of Histopathology; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
| | - Rafil Toma Yaqo
- Department of Histopathology; Duhok Specialized Laboratory Center; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
- Department of Pathology; School of Medicine; University of Duhok; Duhok Kurdistan Region of Iraq Iraq
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Jamshidi AR, Shahlaee A, Farhadi E, Fallahi S, Nicknam MH, Bidad K, Barghamadi M, Mahmoudi M. Clinical characteristics and medical management of Iranian patients with ankylosing spondylitis. Mod Rheumatol 2013; 24:499-504. [DOI: 10.3109/14397595.2013.844302] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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MUSTAFA KHADERN, HAMMOUDEH MOHAMMED, KHAN MUHAMMADASIM. HLA-B27 Prevalence in Arab Populations and Among Patients with Ankylosing Spondylitis: Table 1. J Rheumatol 2012; 39:1675-7. [DOI: 10.3899/jrheum.120403] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Objective.To investigate prevalence of HLA-B27 among general Arab populations and among patients with ankylosing spondylitis (AS), and to review published data.Methods.The prevalence of HLA-B27 was studied among 2579 unrelated healthy Jordanians, almost equally divided among Palestinian refugees and natives of Jordan, reflecting the general population of Jordan. The prevalence of HLA-B27 was also studied among 129 patients with AS, 70 from Jordan, and the remaining 59 from Qatar. HLA typing was performed by standard 2-stage micro-lymphocytotoxicity method. We also reviewed published English language studies of HLA-B27 in Arab patients with AS and general populations retrieved through Medline and cross-reference search.Results.We observed that the general prevalence of HLA-B27 among Jordanians is 2.4%; while the reported prevalence ranges between 2% and 5% among major Arab populations. The prevalence of HLA-B27 among patients with AS is 71% in Jordan and 73% in Qatar, while the reported prevalence from pooled published data from various Arab populations is 64%.Conclusion.From these data one can conclude that HLA-B27 is present in about 2% to 5% among major Arab populations and that its prevalence in Arab patients with AS is closer to 70%.
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HLA-B27 subtypes in Turkish patients with ankylosing spondylitis and healthy controls. Rheumatol Int 2011; 32:3103-5. [DOI: 10.1007/s00296-011-2099-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Accepted: 08/21/2011] [Indexed: 01/07/2023]
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WU ZHEN, MOU YIKUN, LIN ZHIMING, HUANG JINXIAN, WEI QIUJING, GU JIERUO. HLA-B27 Polymorphism in Han Chinese Patients with Ankylosing Spondylitis: A Distinctive Disease Association for B*2715 in a Multiplex Family. J Rheumatol 2009; 36:2849-50. [DOI: 10.3899/jrheum.090341] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Siala M, Mahfoudh N, Gdoura R, Younes M, Fourati H, Kammoun A, Chour I, Meddeb N, Gaddour L, Hakim F, Baklouti S, Bargaoui N, Sellami S, Hammami A, Makni H. Distribution of HLA-B27 and its alleles in patients with reactive arthritis and with ankylosing spondylitis in Tunisia. Rheumatol Int 2009; 29:1193-6. [DOI: 10.1007/s00296-009-0840-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2008] [Accepted: 01/05/2009] [Indexed: 10/21/2022]
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Reveille JD, Maganti RM. Subtypes of HLA-B27: history and implications in the pathogenesis of ankylosing spondylitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2009; 649:159-76. [PMID: 19731628 DOI: 10.1007/978-1-4419-0298-6_12] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
HLA-B27 represents a family of 38 closely related cell surface proteins (encoded by the alleles HLA-B*2701-39) called subtypes of HLA-B27, most of which have evolved from the ubiquitous HLA-B*2705 (specifically the B*27052 allele). HLA-B27 subtypes are largely characterized by nucleotide substitutions (mostly nonsynonymous) in exons 2 and 3 which encode alpha1 and alpha2 domains ofthe peptide binding groove respectively. Table 1 shows the description of sequences of HLA-B27 allele sequences. The subtypes could have arisen from B*2705 by point mutation (B*2703, B*2709, B*2704), gene conversion (B*2701, B*2702, B*2708) and reciprocal recombination (B*2707) B*2706 could have arisen by interlocus gene conversion. Studies from different parts of the world reveal differences in the population distribution.
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Affiliation(s)
- John D Reveille
- Division of Rheumatology and Clinical Immunogenetics, University of Texas Health Science Center, Houston, TX 77026, USA.
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Ankylosing spondylitis and reactive arthritis in the developing world. Best Pract Res Clin Rheumatol 2008; 22:709-23. [DOI: 10.1016/j.berh.2008.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Gunal EK, Sarvan FO, Kamali S, Gul A, Inanc M, Carin M, Konice M, Aral O, Ocal L. Low frequency of HLA-B27 in ankylosing spondylitis patients from Turkey. Joint Bone Spine 2008; 75:299-302. [PMID: 18424159 DOI: 10.1016/j.jbspin.2007.06.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Accepted: 06/06/2007] [Indexed: 01/18/2023]
Abstract
OBJECTIVES Ankylosing spondylitis is strongly associated with HLA-B27. However, the strength of the association with HLA-B27 and the clinical features may vary in different parts of the world. The aim of this study is to compare the clinical features of AS and the frequencies of HLA-B27 and its alleles in patients from Turkey with other series. METHODS One hundred and twelve patients (72 male/40 female) fulfilling the modified New York criteria for the classification of AS and 55 (27 male/28 female) healthy controls were typed for HLA-B27 and allele frequencies by sequence specific primer (PCR/SSP) method and assessed for clinical manifestations. RESULTS Male to female ratio was 1.8, mean age at disease onset was 23.5 and 24.1% of patients reported juvenile onset of symptoms. Peripheral arthritis was seen in 52.7% of patients. Family history (p=0.01) and peripheral arthritis (p=0.02) were more frequent in females and spinal involvement in males. HLA-B27 was found to be positive in 70% of patients and associated with younger mean age, uveitis and shorter time elapsed from symptom to diagnosis. The frequency of HLA-B27 alleles associated with SpA was not different between ankylosing spondylitis patients and healthy controls. CONCLUSION Low frequency of HLA-B27 and clinical variations in ankylosing spondylitis may be due to different genetic and/or environmental factors in Turkey.
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Affiliation(s)
- Esen Kasapoglu Gunal
- Maltepe University Medical Faculty, Department of Internal Medicine, Division of Rheumatology, Istanbul, Turkey.
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Ben Radhia K, Ayed-Jendoubi S, Sfar I, Ben Romdhane T, Makhlouf M, Gorgi Y, Ayed K. Distribution of HLA-B*27 subtypes in Tunisians and their association with ankylosing spondylitis. Joint Bone Spine 2008; 75:172-5. [DOI: 10.1016/j.jbspin.2007.05.020] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Accepted: 05/28/2007] [Indexed: 10/22/2022]
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Gómez P, Montserrat V, Marcilla M, Paradela A, de Castro JAL. B*2707 differs in peptide specificity from B*2705 and B*2704 as much as from HLA-B27 subtypes not associated to spondyloarthritis. Eur J Immunol 2006; 36:1867-81. [PMID: 16783853 DOI: 10.1002/eji.200635896] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
HLA-B*2707 is associated with ankylosing spondylitis in most populations. Like the non-associated allotypes B*2706 and B*2709, it lacks Asp116 and shows preference for peptides with nonpolar C-terminal residues. The relationships between the peptide specificity of B*2707 and those of the disease-associated B*2705 and the non-associated subtypes were analyzed by determining the overlap between the corresponding peptide repertoires, the sequence of shared and differential ligands, and by comparing allospecific T cell epitopes with peptide sharing. The B*2707-bound repertoire was as different from that of B*2705 as from those of B*2706, B*2709, or the two latter subtypes from each other. Differences between B*2707 and B*2705 were based on their C-terminal residue specificity and a subtle modulation at other positions. Differential usage of secondary anchor residues explained the disparity between the B*2707-, B*2706-, and B*2709-bound repertoires. Similar differences in residue usage were found between B*2707 and both B*2704 and B*2706, as expected from the high peptide overlap between the two latter subtypes. T cell cross-reaction paralleled peptide sharing, suggesting that many shared ligands conserve their alloantigenic features on distinct subtypes. Our results indicate that association of HLA-B27 subtypes with ankylosing spondylitis does not correlate with higher peptide sharing among disease-associated subtypes or with obvious peptide motifs.
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Affiliation(s)
- Patricia Gómez
- Centro de Biología Molecular Severo Ochoa (Consejo Superior de Investigaciones Científicas and Universidad Autónoma de Madrid), Facultad de Ciencias, Universidad Autónoma, Madrid, Spain
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Turkcapar N, Toruner M, Soykan I, Aydintug OT, Cetinkaya H, Duzgun N, Ozden A, Duman M. The prevalence of extraintestinal manifestations and HLA association in patients with inflammatory bowel disease. Rheumatol Int 2005; 26:663-8. [PMID: 16136311 DOI: 10.1007/s00296-005-0044-9] [Citation(s) in RCA: 111] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2005] [Accepted: 08/06/2005] [Indexed: 02/06/2023]
Abstract
To determine the prevalence, clinical and radiological characteristics of spondyloarthropathy (SpA) in patients with inflammatory bowel disease (IBD), to assess the association between HLA B27 and B51 and the extraintestinal symptoms and to evaluate whether IBD is associated with Behçet's disease (BD). One hundred and sixty-two consecutive adult patients with established diagnosis of IBD as either Crohn's disease (CD) or ulcerative colitis (UC) were evaluated. All the patients including those previously diagnosed with or without SpA had a complete rheumatologic examination and they were evaluated according to the European Spondyloarthropathy Study Group (ESSG) criteria for SpA and The International Study Group for Behçet's disease criteria for BD. The demographic and clinical data were recorded on a standardized form. The radiographies were obtained in all the patients and computed tomography (CT) was performed in the patients with suspected pelvic radiographies and/or low back pain in the physical examination. Radiological evaluation was made according to the Modified New York criteria. HLA B27, B51 and anti-neutrophile cytoplasmic antigen (ANCA) were searched in all the patients. Of the 162 patients with IBD (mean age 41.48+/-11.63 years, male 60, female 102), 78 were CD and 84 were UC. The mean of the IBD duration was 54.92+/-50.32 months and SpA duration was 20.63+/-34.37 months. The prevalence of SpA and AS in IBD was 45.7 and 9.9%, respectively. Frequencies of SpA and AS, the difference between UC and CD were not significant. Spondylitis, enthesitis, peripheral arthritis, oral ulcer and uveitis were not different between UC and CD, but erythema nodosum was found significantly more common in the CD patients compared with UC patients (P=0.005). The duration of IBD and SpA was similar in both groups. As the IBD duration increased, the prevalence of SpA development decreased (rr=0.991, P=0.009). Of the IBD patients, 13.6% were asymptomatic for musculoskeletal manifestations of SpA and their sacroiliac radiographies and CTs showed grade 2 sacroiliitis. HLA B27, B51 and ANCA positivities were not different between the patients with UC and CD. HLA B27 was significantly more common in the patients with sacroiliitis, spondylitis, enthesitis, peripheral arthritis, erythema nodosum, uveitis (P<0.001) and oral ulcer (P=0.025). BD was diagnosed in none of the patients. ANCA positivity was found to be related with the presence of erythema nodosum and uveitis (P=0.001 and P=0.005). The prevalence of SpA and AS is higher in the prospectively evaluated patients with radiological studies than those in the previously published studies. There is a high prevalence of asymptomatic sacroiliitis in IBD. An early diagnosis of inflammatory arthritis in IBD patients may prevent a disability due to SpA and AS.
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Affiliation(s)
- Nuran Turkcapar
- School of Medicine, Department of Clinical Immunology and Rheumatology, Ankara University, 4. Sok. 22/50 Manolya Apt. Sogutozu, 06520 Ankara, Turkey.
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