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Tay GK, Al Naqbi H, Mawart A, Baalfaqih Z, Almaazmi A, Deeb A, Alsafar H. Segregation Analysis of Genotyped and Family-Phased, Long Range MHC Classical Class I and Class II Haplotypes in 5 Families With Type 1 Diabetes Proband in the United Arab Emirates. Front Genet 2021; 12:670844. [PMID: 34276777 PMCID: PMC8278101 DOI: 10.3389/fgene.2021.670844] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/09/2021] [Indexed: 12/16/2022] Open
Abstract
The classical Human Leucocyte Antigen (HLA) class II haplotypes of the Major Histocompatibility Complex (MHC) that are associated with type 1 diabetes (T1D) were identified in five families from the United Arab Emirates (UAE). Segregation analyses were performed on these 5 families with the disease, 3 with one child and 2 with 2 children diagnosed with T1D. Three HLA-DR4 haplotypes were identified: HLA- DRB1∗04:01:01-DQB1∗03:02:01:01; HLA- DRB1∗04:02:01- DQB1∗03:02:01; and HLA -DRB1∗04:05:01-DQB1∗02:02:01:02. All have previously been identified to be associated with T1D in studies of the Arabian population. In the 10 parents from the 5 families, 9 had at least one HLA-DR4 and HLA-DR3 haplotype which potentially increases the risk of T1D. Of these 9 parents, 3 were heterozygous for HLA-DR4/HLA-DR3 and one was homozygous for HLA-DR3. Two haplotypes that were identified here extend to the HLA class I region were previously designated AH8.2 (HLA -A∗26-B∗08-DRB1∗03) and AH50.2 (HLA -C∗06-B∗50-DRB1∗03:01-DQ∗02) and associated with diabetes in neighboring North Indian populations. This study provides examples of MHC haplotype analysis in pedigrees to improve our understanding of the genetics of T1D in the understudied population of the UAE.
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Affiliation(s)
- Guan K Tay
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Halima Al Naqbi
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Aurélie Mawart
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Zahrah Baalfaqih
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Anoud Almaazmi
- College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Asma Deeb
- Department of Endocrinology, Mafraq Hospital, Abu Dhabi, United Arab Emirates
| | - Habiba Alsafar
- Center for Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,College of Medicine and Health Sciences, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
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Belhiba O, Aadam Z, Jeddane L, Saile R, Salih Alj H, Bousfiha AA, Jennane F. Research of anti-GAD and anti-IA2 autoantibodies by ELISA test in a series of Moroccan pediatric patients with diabetes type 1. Afr Health Sci 2020; 20:1337-1343. [PMID: 33402983 PMCID: PMC7751543 DOI: 10.4314/ahs.v20i3.40] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Introduction Type I diabetes (T1D) is an autoimmune disease with a prediabetic, asymptomatic period characterized by the selective destruction of insulin-producing β cells. During the pre-clinical phase, various auto-antibodies are generated against several beta cell antigens such as anti glutamate acid decarboxylase (Anti-GAD), anti tyrosine phosphatase (Anti-IA2). Today, the coupled detection of Anti-IA2 with that of Anti-GAD proves its great importance in the diagnosis and prediction of type 1 diabetes. The combined positivity for both antibodies has a specificity and a positive predictive value of 100%. Objectives In this work, we evaluate the diagnostic value of anti-GAD and anti-IA2 antibodies in a series based on 78 Moroccan subjects initially under 16, suspected T1D. Results and Discussion Our series consists mainly of 74% of newly diagnosed patients for T1D and 26% of confirmed diagnostic patients, of whom 52% are females. The mean age of diagnosis is 7 ± 4 years, the mean of HbA1c at the time of diagnosis is 11.63 ± 2.16%, and the percentage of family history in our series is 69%. The proportion of positive results for anti-IA2 antibodies and anti-GAD antibodies are, respectively, 76.92% and 62.82%, and 52.56% of patients are positive for both auto-antibodies. This study confirms that anti-GAD and anti-IA2 auto-antibodies assays can detect patients early and the autoantibodies can persist several years after diagnosis of type 1 diabetes. Conclusion This study confirmed the diagnosis and classification of T1D (type 1A) in 87.18% of patients, and we reported that the prevalence of anti-GAD and anti-IA2 is higher in girls than in boys.
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Affiliation(s)
- O Belhiba
- Pediatric Endocrinology Unit, Hospital d'Enfant Abderrahim Harouchi Chu Ibn Rochd, Casablanca, Morocco
- Laboratory of Clinical Immunology, Allergy, and Inflammation LICIA, Faculty of Medicine and Pharmacy Hassan II University-Casablanca, Morocco
| | - Z Aadam
- Biology Laboratory and Health/Immune and Metabolic Pathology Team-Faculty of Sciences Ben M'Sik. Hassan II University-Casablanca, Morocco
| | - L Jeddane
- Laboratory of Clinical Immunology, Allergy, and Inflammation LICIA, Faculty of Medicine and Pharmacy Hassan II University-Casablanca, Morocco
- National Reference Laboratory, Mohamed VI University of Health Sciences (UM6SS), Casablanca, Morocco
| | - R Saile
- Biology Laboratory and Health/Immune and Metabolic Pathology Team-Faculty of Sciences Ben M'Sik. Hassan II University-Casablanca, Morocco
| | - H Salih Alj
- Biology Laboratory and Health/Immune and Metabolic Pathology Team-Faculty of Sciences Ben M'Sik. Hassan II University-Casablanca, Morocco
| | - A A Bousfiha
- Laboratory of Clinical Immunology, Allergy, and Inflammation LICIA, Faculty of Medicine and Pharmacy Hassan II University-Casablanca, Morocco
- Clinical Immunology Unit, Infectious Department, Hospital d'Enfant Abderrahim Harouchi, CHU Ibn Rochd, Morocco
| | - F Jennane
- Pediatric Endocrinology Unit, Hospital d'Enfant Abderrahim Harouchi Chu Ibn Rochd, Casablanca, Morocco
- Laboratory of Clinical Immunology, Allergy, and Inflammation LICIA, Faculty of Medicine and Pharmacy Hassan II University-Casablanca, Morocco
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Kumar N, Mehra NK, Kanga U, Kaur G, Tandon N, Chuzho N, Mishra G, Neolia SC. Diverse human leukocyte antigen association of type 1 diabetes in north India. J Diabetes 2019; 11:719-728. [PMID: 30614662 DOI: 10.1111/1753-0407.12898] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/29/2018] [Accepted: 01/03/2019] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Type 1 diabetes (T1D) is a complex disease, with involvement of various susceptibility genes. Human leukocyte antigen (HLA) on chromosome 6p21 is major susceptibility region. This study examined genetic association of HLA genes with T1D. METHODS The study recruited 259 T1D patients and 706 controls from north India. PCR-SSP and LiPA were used to type HLA Class I and II alleles. RESULTS At HLA Class I locus, HLA-A*02, A*26, B*08 and B*50 were significantly increased in patients vs controls (39.8% vs 28.9% [Bonferroni-corrected P {Pc } = 0.032], 24.7% vs 9.6% [Pc = 4.83 × 10-8 ], 37.2% vs 15.7% [Pc = 1.92 × 10-9 ], and 19.4% vs 5.5% [Pc = 4.62 × 10-9 ], respectively). Similarly, in Class II region, DRB1*03 showed a strong positive association with T1D (78.7% vs 17.5% in controls; P = 1.02 × 10-9 ). Association of DRB1*04 with T1D (28.3% vs 15.5% in controls; Pc = 3.86 × 10-4 ) was not independent of DRB1*03. Negative associations were found between T1D and DRB1*07, *11, *13, and *15 (13.8% vs 26.1% in controls [Pc = 0.00175], 3.9% vs 16.9% in controls [Pc = 6.55× 10-6 ], 5.5% vs 21.6% in controls [Pc = 2.51 × 10-7 ], and 16.9% vs 43.9% in controls [Pc = 9.94× 10-10 ], respectively). Compared with controls, patients had significantly higher haplotype frequencies of A*26-B*08-DRB1*03-DQA1*05-DQB1*02 (10.43% vs 1.96%; P = 7.62 × 10-11 ), A*02-B*50-DRB1*03-DQA1*05-DQB1*02 (6.1% vs 0.71%; P = 2.19 × 10-10 ), A*24-B*08-DRB1*03-DQA1*05-DQB1*02 (4.72% vs 0.8%; P = 5.4 × 10-7 ), A*02-B*08-DRB1*03-DQA1*05-DQB1*02 (2.36% vs 0.18%; P = 3.6 × 10-5 ), and A*33-B*58-DRB1*03-DQA1*05-DQB1*02 (4.33% vs 1.25%; P = 0.00019). CONCLUSIONS In north India, T1D is independently associated only with HLA-DRB1*03 haplotypes, and is negatively associated with DRB1*07, *11, *13, and *15.
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Affiliation(s)
- Neeraj Kumar
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Narinder K Mehra
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Uma Kanga
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Gurvinder Kaur
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
| | - Nikhil Tandon
- Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Neihenuo Chuzho
- Indian Council of Medical Research (ICMR)-National Institute of Pathology, Safdarjang Hospital Campus, New Delhi, India
| | - Gunja Mishra
- Indian Council of Medical Research (ICMR)-National Institute of Pathology, Safdarjang Hospital Campus, New Delhi, India
| | - Shekhar C Neolia
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences, New Delhi, India
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Hajjej A, Almawi WY, Stayoussef M, Arnaiz-Villena A, Hattab L, Hmida S. Association of HLA-DRB1 and -DQB1 alleles with type 1 (autoimmune) diabetes in African Arabs: systematic review and meta-analysis. Immunol Invest 2018; 48:130-146. [PMID: 30004835 DOI: 10.1080/08820139.2018.1493498] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Several studies confirmed the association of HLA-DRB1 and -DQB1 alleles with altered risk of type 1 diabetes (T1D). However, data from individual studies based on small sample sizes yielded often conflicting findings in African Arabs. This is a systematic review and meta-analysis aimed at comprehensively evaluating this association with T1D, using molecular HLA data. Relevant studies were identified through systemic search of Medline/PubMed, Cochrane, Science Direct, ResearchGate, and EMBASE databases. Statistical analysis was carried out using RevMan, and Comprehensive Meta-analysis programs. Given the heterogeneity of African Arabs, we also performed subgroup analysis according to ethnicity. Analysis of sensitivity, heterogeneity, and publication bias were performed to validate the outcome of the findings. This meta-analysis included 862 T1DM cases, along with 1,390 normoglycemic control, and comprised ten comparisons. Our study indicates that DRB1*03 (OR = 2.86), DRB1*04 (OR = 2.78), and DQB1*02 (OR = 2.29), are positively associated with increased risk of T1DM, while DRB1*07 (OR = 0.48), DRB1*11 (OR = 0.20), DRB1*13 (OR = 0.47), DRB1*15 (OR = 0.30), DQB1*05 (OR = 0.39), and DQB1*06 (OR = 0.27) were negatively associated with T1D, suggesting a protective role against T1D. This meta-analysis was characterized by low heterogeneity, sensitivity, and publication bias, indicating the robustness and reliability of the results. BACKGROUND Several studies confirmed the association of HLA-DRB1 and -DQB1 alleles with altered risk of type 1 diabetes (T1D). However, data from individual studies based on small sample sizes yielded often conflicting findings in African Arabs. This is a systematic review and meta-analysis aimed at comprehensively evaluating this association with T1D, using molecular HLA data. METHODS Relevant studies were identified through systemic search of Medline/PubMed, Cochrane, Science Direct, ResearchGate, and EMBASE databases. Statistical analysis was carried out using Revman, and Comprehensive Meta-analysis programs. Given the heterogeneity of African Arabs, we also performed subgroup analysis according to ethnicity. Analysis of sensitivity, heterogeneity, and pub¬lication bias were performed to validate the outcome of the findings. This meta-analysis included 862 T1DM cases, along with 1,390 normoglycemic control, and comprised ten comparisons. RESULTS Our study indicates that DRB1*03 (OR = 2.86), DRB1*04 (OR = 2.78), and DQB1*02 (OR = 2.29), are positively associated with increased risk of T1DM, while DRB1*07 (OR = 0.48), DRB1*11 (OR = 0.20), DRB1*13 (OR = 0.47), DRB1*15 (OR = 0.30), DQB1*05 (OR = 0.39), and DQB1*06 (OR = 0.27) were negatively associated with T1D, suggesting a protective role against T1D. CONCLUSION This meta-analysis was characterized by low heterogeneity, sensitivity, and publication bias, indicating the robustness and reliability of the results.
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Affiliation(s)
- Abdelhafidh Hajjej
- a Department of Immunogenetics , National Blood Transfusion Center , Tunis , Tunisia
| | - Wassim Y Almawi
- b School of Pharmacy , Lebanese American University , Byblos , Lebanon.,c Department of Biology, Faculty of Sciences , El-Manar University , Tunis , Tunisia
| | - Mouna Stayoussef
- c Department of Biology, Faculty of Sciences , El-Manar University , Tunis , Tunisia
| | - Antonio Arnaiz-Villena
- d Department of Immunology, School of Medicine, Madrid Regional Blood Center , University Complutense , Madrid , Spain
| | - Lasmar Hattab
- e Department of Medical Analysis , Regional Hospital of Gabes (Ghannouch) , Gabes , Tunisia
| | - Slama Hmida
- a Department of Immunogenetics , National Blood Transfusion Center , Tunis , Tunisia
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Santana Del Pino A, Medina-Rodríguez N, Hernández-García M, Nóvoa-Mogollón FJ, Wägner AM. Is HLA the cause of the high incidence of type 1 diabetes in the Canary Islands? Results from the Type 1 Diabetes Genetics Consortium (T1DGC). ENDOCRINOLOGIA, DIABETES Y NUTRICION 2017; 64:146-151. [PMID: 28440753 DOI: 10.1016/j.endinu.2016.12.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/03/2016] [Accepted: 12/06/2016] [Indexed: 01/25/2023]
Abstract
INTRODUCTION Incidence of childhood-onset type 1 diabetes mellitus in the Canary Islands is the highest reported so far in Spain, and among the highest worldwide. The HLA region accounts for approximately half the genetic risk of type 1 diabetes. Our aim was to assess distribution of high-risk and protective HLA haplotypes in the Canarian families included in the T1DGC, as compared to the rest of Spain. METHODS The T1DGC study, an international project to study the genetics and pathogenesis of type 1 diabetes, enrolled more than 3000 families with type 1 diabetes worldwide. Spain provided 149 of these families, of whom 42 were from Tenerife and Gran Canaria. HLA was genotyped centrally using a PCR-based, sequence-specific oligonucleotide probe system. Haplotypes were reconstructed using the deterministic algorithm alleHap in the R programming environment. Based on prior T1DGC results in Caucasian population, haplotypes DRB1*0405-DQA1*0301-DQB1*0302, DRB1*0401-DQA1*0301-DQB1*0302, DRB1*0301-DQA1*0501-DQB1*0201, DRB1*0402-DQA1*0301-DQB1*0302 and DRB1*0404-DQA1*0301-DQB1*0302 were considered high-risk. DRB1*0701-DQA1*0201-DQB1*0303, DRB1*1401-DQA1*0101-DQB1*0503, DRB1*1501-DQA1*0102-DQB1*0602, DRB1*1101-DQA1*0501-DQB1*0301, DRB1*1104-DQA1*0501-DQB1*0301, DRB1*1303-DQA1*0501-DQB1*0301, DRB1*1301-DQA1*0103-DQB1*0603 and DRB1*0403-DQA1*0301-DQB1*0302 were considered protective. The distribution of protective, high-risk, and other haplotypes in the (first two) affected siblings and unaffected parents from Canarian and non-Canarian Spanish families was compared (Chi-square test). RESULTS No significant differences were found between the regions in distribution of the HLA haplotypes in the affected siblings or in the non-affected parents. CONCLUSIONS The high incidence of childhood-onset type 1 diabetes in the Canarian population does not appear to be explained by a greater prevalence of high-risk class II HLA haplotypes in families with the disease. However, sample size limits the differences that can be detected in this study.
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Affiliation(s)
- Angelo Santana Del Pino
- Mathematics and Statistics Dept, Universidad de Las Palmas de Gran Canaria (ULPGC), Las Palmas de Gran Canaria, Spain
| | - Nathan Medina-Rodríguez
- Instituto Universitario de Microelectrónica Aplicada, ULPGC, Las Palmas de Gran Canaria, Spain
| | - Marta Hernández-García
- Endocrinology Dept, Hospital Universitari Arnau de Vilanova, Lleida, Spain; Institut de Recerca Biomèdica de Lleida (IRB Lleida), Lleida, Spain
| | - Francisco J Nóvoa-Mogollón
- Endocrinology Dept, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas de Gran Canaria, Spain; Instituto Universitario de Investigaciones Biomédicas y Sanitarias, ULPGC, Las Palmas de Gran Canaria, Spain
| | - Ana M Wägner
- Endocrinology Dept, Complejo Hospitalario Universitario Insular Materno-Infantil, Las Palmas de Gran Canaria, Spain; Instituto Universitario de Investigaciones Biomédicas y Sanitarias, ULPGC, Las Palmas de Gran Canaria, Spain.
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