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Atanasova M, Dimitrov I, Fernandez A, Moreno J, Koning F, Doytchinova I. Assessment of Novel Proteins Triggering Celiac Disease via Docking-Based Approach. Molecules 2023; 29:138. [PMID: 38202724 PMCID: PMC10780262 DOI: 10.3390/molecules29010138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/22/2023] [Accepted: 12/24/2023] [Indexed: 01/12/2024] Open
Abstract
Human leukocyte antigens (HLAs) are pivotal in antigen processing, presenting to CD4+ T cells, and are linked to autoimmune disease susceptibility. In celiac disease, HLA-DQ2.5 and HLA-DQ8.1 bind gluten peptides on APCs, some recognized by CD4+ T cells, prompting inflammation and tissue damage. While extensively studied experimentally, these alleles lack comprehensive in silico analysis. To explore peptide-HLA preferences, we used molecular docking on peptide libraries, deriving quantitative matrices (QMs) for evaluating amino acids at nine-residue peptide binding cores. Our findings tie specific residue preferences to peptide backbone conformations. Validating QMs on known binders and non-binders showed strong predictive power (89-94% accuracy). These QMs excel in screening protein libraries, even whole proteomes, notably reducing time and costs for celiac disease risk assessment in novel proteins. This computational approach aligns with European Food Safety Authority guidance, promising efficient screening for potential celiac disease triggers.
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Affiliation(s)
- Mariyana Atanasova
- Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria; (I.D.); (I.D.)
| | - Ivan Dimitrov
- Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria; (I.D.); (I.D.)
| | | | - Javier Moreno
- Instituto de Investigación en Ciencias de la Alimentación (CIAL), Consejo Superior de Investigaciones Cientificas-Universidad Autonoma de Madrid (CSIC-UAM), Campus of Interntional Excellence—CEI (UAM+CSIC), Nicolás Cabrera, 9, 28049 Madrid, Spain;
| | - Frits Koning
- Department of Immunohematology and Blood Transfusion, Leiden University Medical Centre, 2333 ZA Leiden, The Netherlands;
| | - Irini Doytchinova
- Faculty of Pharmacy, Medical University of Sofia, 1000 Sofia, Bulgaria; (I.D.); (I.D.)
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Immunogenetic Profiling of SLE and LN among Jordanian Patients. J Pers Med 2022; 12:jpm12121955. [PMID: 36556176 PMCID: PMC9782219 DOI: 10.3390/jpm12121955] [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: 10/10/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Systemic Lupus Erythematosus (SLE) is a prolonged inflammatory autoimmune disease, which is characterized by a high titer of serological autoantibodies. Interactions between environmental and genetic factors play a crucial role in the pathogenesis of SLE. Human Leukocyte Antigen (HLA) genes, namely HLA-class II genes, are one of the main candidate genes that increase susceptibility to SLE. The aim of this study was to investigate, for the first time, the association of HLA-DRB1 and HLA-DQB1 genes among Jordanian patients diagnosed with SLE and Lupus Nephritis (LN) using the Polymerase Chain Reaction-Sequence-Specific Primer (PCR-SSP) technique. This study showed that SLE is positively associated with DRB1*0301, DRB1*1101, DRB1*1102 and HLA-DQB1*0601. Furthermore, HLA-DRB1*0301, DRB1*1101, HLA-DRB1*1501 and HLA-DQB1*0601 were found to be linked to SLE patients with LN. In addition, haplotypes HLA-DRB1*0301/DQB1*0201 and HLA-DRB1*1501/DQB1*0601 were found to be linked to SLE and LN. Our findings may serve as possible predictive markers for early screening for LN risk in SLE patients. In light of these results, the role of HLA gene polymorphisms may help in understanding the clinical course, prognosis of the disease and developing better treatment strategies for SLE patients. In addition, it may help in early diagnosis, prevention, intervention and management of the disease.
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Selvaraja M, Too CL, Tan LK, Koay BT, Abdullah M, Shah AM, Arip M, Amin-Nordin S. Human leucocyte antigens profiling in Malay female patients with systemic lupus erythematosus: are we the same or different? Lupus Sci Med 2022; 9:9/1/e000554. [PMID: 35105721 PMCID: PMC8808435 DOI: 10.1136/lupus-2021-000554] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 01/08/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVE SLE is a heterogeneous autoimmune disease, in terms of clinical presentation, incidence and severity across diverse ethnic populations. We investigated the human leucocyte antigens (HLA) profile (ie, HLA-A, HLA-B and HLA-C, HLA-DRB1, HLA-DQA1, HLA-DQB1, HLA-DPA1 and HLA-DPB1) in Malaysian Malay female patients with SLE and determined the generalisability of the published HLA risk factors across different ethnic populations globally including Malaysia. METHODS One hundred Malay female patients with SLE were recruited between January 2016 and October 2017 from a nephrology clinic. All patients were genotyped for HLA-A, HLA-B, HLA-C, HLA-DRB1, HLA-DQA1, HLA-DQB1, HLA-DPA1 and HLA-DPB1 alleles using PCR sequence-specific oligonucleotides method on Luminex platform. A total of 951 HLA genotyped population-based Malay control subjects was used for association testing by means of OR with 95% CIs. RESULTS Our findings convincingly validated common associations between HLA-A*11 (OR=1.65, p=3.36×10-3, corrected P (Pc)=4.03×10-2) and DQB1*05:01 (OR=1.56, p=2.02×10-2, Pc=non-significant) and SLE susceptibility in the Malay population. In contrast, DQB1*03:01 (OR=0.51, p=4.06×10-4, Pc=6.50×10-3) were associated with decreased risk of SLE in Malay population. Additionally, we also detected novel associations of susceptibility HLA genes (ie, HLA-B*38:02, DPA1*02:02, DPB1*14:01) and protective HLA genes (ie, DPA1*01:03). When comparing the current data with data from previously published studies from Caucasian, African and Asian populations, DRB1*15 alleles, DQB1*03:01 and DQA1*01:02 were corroborated as universal susceptibility and protective genes. CONCLUSIONS This study reveals multiple HLA alleles associated with susceptibility and protection against risk of developing SLE in Malay female population with renal disorders. In addition, the published data from different ethnic populations together with our study further support the notion that the genetic effects from association with DRB1*15:01/02, DQB1*03:01 and DQA1*01:02 alleles are generalised to multiple ethnic populations of Caucasian, African and Asian descents.
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Affiliation(s)
- Malarvili Selvaraja
- Faculty of Pharmaceutical Sciences, No 1, Jalan Gading, UCSI Heights, Taman Connaught, UCSI University, Cheras, Kuala Lumpur, Malaysia.,Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Chun Lai Too
- Immunogenetic Unit, Allergy and Immunology Research Centre, Ministry of Health Malaysia, National Institutes of Health Complex, Institute for Medical Research, Shah Alam, Selangor, Malaysia .,Department of Medicine, Division of Rheumatology, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Lay Kim Tan
- Immunogenetic Unit, Allergy and Immunology Research Centre, Ministry of Health Malaysia, National Institutes of Health Complex, Institute for Medical Research, Shah Alam, Selangor, Malaysia
| | - Bee Tee Koay
- Transplantation Immunology Unit, Allergy and Immunology Research Centre, Ministry of Health Malaysia, National Institutes of Health Complex, Institute for Medical Research, Kuala Lumpur, Malaysia
| | - Maha Abdullah
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Anim Md Shah
- Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
| | - Masita Arip
- Allergy and Immunology Research Centre, Ministry of Health. National Institutes of Health Complex, Institute for Medical Research, Shah Alam, Selangor, Malaysia
| | - Syafinaz Amin-Nordin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
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Relevance of autoantibody profile with HLA-DRB1 and -DQB1 alleles in a group of Iranian systemic lupus erythematosus patients. Immunol Lett 2021; 237:11-16. [PMID: 34186156 DOI: 10.1016/j.imlet.2021.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND One of the most relevant genetic components in systemic lupus erythematosus (SLE) is human leukocyte antigen (HLA) gene complex which plays a central role in autoimmune responses. This study aimed to explore the associations of HLA-DRB1/-DQB1 alleles and haplotypes with SLE risk and the appearance of autoantibodies in SLE disease. METHODS A total of 127 SLE patients and 153 ethnically matched healthy controls were enrolled. HLA-DRB1 and HLA-DQB1 alleles were determined by PCR-SSP method and then HLA alleles and haplotypes frequencies were compared between two groups and among the patients in terms of autoantibodies spectrum. RESULTS We found that HLA-DRB1*03 and HLA-DRB1*16 alleles were significantly associated with increased risk (P = 0.008, PC=0.05 and P = 0.002, PC=0.02 respectively) and DRB1*01 conferred a potential protective role for disease (P = 0.03, PC=0.13). Similar associations were observed at haplotype level; DRB1*03~DQB1*02 (OR1.91,P = 0.01, PC=0.08), DRB1*16~DQB1*05 (OR3.65,P = 0.004,PC=0.06) and DRB1*01~DQB1*05 (OR0.36,P = 0.04, PC=0.22). Remarkably, we observed significantly associations of DRB1*03 with the appearance of anti-SSA/Ro (PC=0.02), anti-SSB/La (PC=0.002) and anti-coagulant (P = 0.007), DRB1*15 with anti-SSA/Ro (PC=0.04), DRB1*16 with anti-Sm (PC=0.02), DRB1*04 with anti-β2gpI (PC=3 * 10-5), anti-cardiolipin (P = 0.002) and rheumatoid factor (P = 0.004) and DRB1*13 with anti-Sm (PC=0.02) and anti-β2gpI (PC=0.01) antibodies. Also, negative associations of DRB1*04 with anti-Sm, anti-SSA/Ro, DQB1*03 with anti-Sm and DRB1*11 with anti-Sm and anti-β2gpI were observed. CONCLUSIONS We identified DRB1*03 and DRB1*16 as risk alleles and DRB1*01 as a potential protective allele for SLE disease. More importantly, we found a close link between genetic susceptibility for SLE and autoantibodies status that was more evident for DRB1*03 allele.
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Selvaraja M, Chin VK, Abdullah M, Arip M, Amin-Nordin S. HLA-DRB1 *04 as a Risk Allele to Systemic Lupus Erythematosus and Lupus Nephritis in the Malay Population of Malaysia. Front Med (Lausanne) 2021; 7:598665. [PMID: 33644084 PMCID: PMC7902771 DOI: 10.3389/fmed.2020.598665] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/03/2020] [Indexed: 01/31/2023] Open
Abstract
Systemic lupus erythematosus (SLE) is a chronic autoimmune disease afflicting multiple organs. Lupus nephritis (LN) is a serious complication of SLE and remains a major cause of mortality and morbidity. Curative therapy remains unavailable as etiology from genetic and environmental factors is still unclear. The present study was conducted to elucidate the link between HLA-DRB1 gene polymorphisms with SLE and LN through clinical and laboratory/biological presentations in a population of Malaysian Malay females with SLE. A total of 100 Malay female SLE patients inclusive of 70 SLE patients without LN and 30 patients with LN were included in this study. HLA-DRB1 allele examination in SLE patients was performed using PCR-SSO, and the alleles' frequencies were compared with 951 publicly available datasets representing Malay healthy controls in Malaysia. Cytokines and free radical levels were detected by ELISA and bead-based multiplexed Luminex assays. The association between HLA-DRB1 alleles with clinical and serological manifestations and immune mediators was analyzed using different statistical approaches whenever applicable. Our study showed that HLA-DRB1*0405, HLA-DRB1*1502, and HLA-DRB1*1602 were associated with the increased risk of SLE while HLA-DRB1*1201 and HLADRB1*1202 alleles were associated with a lower risk of SLE development. Furthermore, HLA-DRB1*04 showed significant association to LN and arthritis while HLA-DRB1*15 was significantly associated with oral ulcer in Malay SLE patients. Association analysis of HLA-DRB1*04 with clinical and biological factors revealed that HLA-DRB1*04 was significantly associated with Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) scores, anti-nuclear antibody (ANA), C-reactive protein (CRP) in the blood, and total protein in the urine. SLE carriers with the HLA-DRB1*04 allele were significantly correlated to the increased levels of cytokines (IFN-y, GM-CSF, IL-17F, IL-18, IL-21, and VEGF) and were significantly showing negative correlation to IL-5 and free radicals (LPO and catalase enzyme) levels compared to SLE carriers without HLA-DRB1*04 allele. The results suggested that disease severity in SLE may be determined by HLA-DRB1 alleles. The risk of HLA-DRB1*04 allele with LN was supported by the demonstration of an intense inflammatory response in Malay SLE patients in Malaysia. More studies inclusive of a larger and multiple SLE cohorts in the future are warranted to validate these findings.
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Affiliation(s)
- Malarvili Selvaraja
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Voon Kin Chin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Maha Abdullah
- Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Masita Arip
- Allergy and Immunology Research Centre, Institute for Medical Research, Ministry of Health Malaysia, Kuala Lumpur, Malaysia
| | - Syafinaz Amin-Nordin
- Department of Medical Microbiology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
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Pang X, Qian J, Jin H, Zhang L, Lin L, Wang Y, Lei Y, Zhou Z, Li M, Zhang H. Durable benefit from immunotherapy and accompanied lupus erythematosus in pancreatic adenocarcinoma with DNA repair deficiency. J Immunother Cancer 2020; 8:jitc-2019-000463. [PMID: 32636238 PMCID: PMC7342819 DOI: 10.1136/jitc-2019-000463] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2020] [Indexed: 12/16/2022] Open
Abstract
Background Clinical trials showed limited benefit of anti-PD-1 (programmed cell death 1) monotherapy in pancreatic adenocarcinoma patients and immune-related adverse events caused by immune checkpoint inhibitors were rarely reported in pancreatic adenocarcinoma. Here, we report the first case of durable benefit along with systemic lupus erythematosus following immunotherapy in mismatch repair-proficient pancreatic cancer. Case presentation We describe a 57-year-old woman with resected stage ⅢB pancreatic cancer who underwent several lines of conventional chemotherapy after multiple lymph node metastases. When the disease progressed again, the patient received an off-label treatment with pembrolizumab (100 mg every 3 weeks). After four cycles of immunotherapy treatment, CA19-9 level rapidly decreased to normal and the lymph node metastases reduced dramatically in volume, demonstrating a partial response to the therapy by RECIST 1.1 criteria. She continued on pembrolizumab and a total of eight cycles of administration she had received. Her lesions showed consistent reduction in size even when the medication had been stopped. Actually the patient experienced durable benefit from anti-PD-1 therapy for more than 4 years and she is still in good condition without tumor relapses to date. Besides, she was diagnosed with systemic lupus erythematosus 2 months after the last dose of pembrolizumab. Molecular profiling identified two deleterious PALB2 alterations including a germline mutation (PALB2 c.3114–1G>A) and a somatic mutation (PALB2 c.2514+1G>C) in this patient, suggesting the potential of DNA homologous recombination deficiency. Multiplex immunohistochemistry and RNA-seq results revealed a brisk immune cell infiltration in her resected primary lesion. Additionally, humanleukocyte antigen (HLA) typing assay identified two previously reported systemic lupus erythematosus risk alleles HLA-DRB1*15:01 and HLA-DQB1*06:02 in this patient. Conclusions The deleterious mutations of PALB2 closely related to homologous recombination deficiency or alterations of DNA damage response and repair genes might be promising biomarkers for predicting efficacy of immune checkpoint inhibitors in pancreatic adenocarcinoma. Genetic correlation behind immunotherapy-induced systemic lupus erythematosus and associated mechanism remain to be elucidated.
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Affiliation(s)
- Xionghao Pang
- Department of Oncology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Juanjuan Qian
- Genecast Precision Medicine Technology Institute, Beijing, China
| | - Hua Jin
- Department of Oncology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Lei Zhang
- Genecast Precision Medicine Technology Institute, Beijing, China
| | - Lin Lin
- Department of Oncology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Yuli Wang
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Yi Lei
- Department of Radiology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Zeqiang Zhou
- Department of Oncology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Meixiang Li
- Department of Oncology, The First Affiliated Hospital of Shenzhen University, Health Science Center, Shenzhen Second People's Hospital, Shenzhen, China
| | - Henghui Zhang
- Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
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Chen Y, Li S, Huang R, Zhang Z, Petersen F, Zheng J, Yu X. Comprehensive meta-analysis reveals an association of the HLA-DRB1*1602 allele with autoimmune diseases mediated predominantly by autoantibodies. Autoimmun Rev 2020; 19:102532. [PMID: 32234402 DOI: 10.1016/j.autrev.2020.102532] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 12/21/2019] [Indexed: 12/11/2022]
Abstract
The human leukocytes antigen (HLA)-DRB1*16:02 allele has been suggested to be associated with many autoimmune diseases. However, a validation of the results of the different studies by a comprehensive analysis of the corresponding meta data is lacking. In this study, we performed a meta-analysis of the association between HLA-DRB1*16:02 allele with various autoimmune disorders. Our analysis shows that HLA-DRB1*16:02 allele was associated with systemic lupus erythematosus, anti-N-Methyl-d-Aspartate receptor (NMDAR) encephalitis, Graves' disease, myasthenia gravis, neuromyelitis optica and antibody-associated systemic vasculitis with microscopic polyangiitis (AASV-MPA). However, no such association was found for multiple sclerosis, autoimmune hepatitis type 1, rheumatoid arthritis, type 1 diabetes and Vogt-Koyanagi-Harada syndrome. Re-analysis of the studies after their categorization into autoantibody-dependent and T cell-dependent autoimmune diseases revealed that the HLA-DRB1*16:02 allele was strongly associated with disorder predominantly mediated by autoantibodies (OR = 1.93; 95% CI = 1.63-2.28, P = 1.95 × 10-14) but not with those predominantly mediated by T cells (OR = 1.08; 95% CI = 0.87-1.34, P = .474). In addition, amino acid sequence alignment of common HLA-DRB1 subtypes demonstrated that HLA-DRB1*16:02 carries a unique motif of amino acid residues at position 67-74 which encodes the third hypervariable region. Taken together, the distinct pattern of disease association and the unique amino acid sequence of the third hypervariable region of the HLA-DRB1 provide some hints on how HLA-DRB1*16:02 is involved in the pathogenesis of autoimmune diseases.
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Affiliation(s)
- Yan Chen
- Institute of Psychiatry and Neuroscience, Xinxiang Medical University,Xinxiang, China
| | - Shasha Li
- Institute of Psychiatry and Neuroscience, Xinxiang Medical University,Xinxiang, China
| | - Renliang Huang
- Medical Research Center, Hainan Cancer Hospital, Affiliated Cancer Hospital of Hainan Medical University, Hainan, China
| | - Zhongjian Zhang
- Institute of Psychiatry and Neuroscience, Xinxiang Medical University,Xinxiang, China
| | - Frank Petersen
- Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), Members of the German Center for Lung Research (DZL), Borstel, Germany
| | - Junfeng Zheng
- Institute of Psychiatry and Neuroscience, Xinxiang Medical University,Xinxiang, China.
| | - Xinhua Yu
- Priority Area Asthma & Allergy, Research Center Borstel, Airway Research Center North (ARCN), Members of the German Center for Lung Research (DZL), Borstel, Germany.
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Xue K, Niu WQ, Cui Y. Association of HLA-DR3 and HLA-DR15 Polymorphisms with Risk of Systemic Lupus Erythematosus. Chin Med J (Engl) 2019; 131:2844-2851. [PMID: 30511687 PMCID: PMC6278195 DOI: 10.4103/0366-6999.246058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background: Systemic lupus erythematosus (SLE) is an autoimmune disease under genetic control. Growing evidences support the genetic predisposition of HLA-DRB1 gene polymorphisms to SLE, yet the results are not often reproducible. The purpose of this study was to assess the association of two polymorphisms of HLA-DRB1 gene (HLA-DR3 and HLA-DR15) with the risk of SLE via a comprehensive meta-analysis. Methods: This study complied with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement. Case-control studies on HLA-DRB1 and SLE were searched from PubMed, Elsevier Science, Springer Link, Medline, and Cochrane Library database as of June 2018. Analysis was based on the random-effects model using STATA software version 14.0. Results: A total of 23 studies were retained for analysis, including 5261 cases and 9838 controls. Overall analysis revealed that HLA-DR3 and HLA-DR15 polymorphisms were associated with the significant risk of SLE (odds ratio [OR]: 1.60, 95% confidence interval (CI): 1.316–1.934, P = 0.129 and OR: 1.68, 95% CI: 1.334–2.112, P = 0.001, respectively). Subgroup analyses demonstrated that for both HLA-DR3 and HLA-DR15 polymorphisms, ethnicity was a possible source of heterogeneity. Specifically, HLA-DR3 polymorphism was not associated with SLE in White populations (OR: 1.60, 95% CI: 1.320–1.960, P = 0.522) and HLA-DR15 polymorphism in East Asian populations (OR: 1.65, 95% CI: 1.248–2.173, P = 0.001). In addition, source of control was another possible source for both HLA-DR3 and HLA-DR15 polymorphisms, with observable significance for HLA-DR3 in only population-based studies (OR: 1.65, 95% CI: 1.370–1.990, P = 0.244) and for HLA-DR15 in both population-based and hospital-based studies (OR: 1.38, 95% CI: 1.078–1.760, P = 0.123 and OR: 2.08, 95% CI: 1.738–2.490, P = 0.881, respectively). Conclusions: HLA-DRB1 gene may be a SLE-susceptibility gene, and it shows evident ethnic heterogeneity. Further prospective validations across multiple ethnical groups are warranted.
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Affiliation(s)
- Ke Xue
- Department of Dermatology, China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Wen-Quan Niu
- Institute of Clinical Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Yong Cui
- Department of Dermatology, China-Japan Friendship Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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Katkam SK, Rajasekhar L, Kutala VK. The influence of functional polymorphic positions of HLA-DRβ1 molecules on risk for South Indian systemic lupus erythematosus patients. Lupus 2018; 27:991-1000. [DOI: 10.1177/0961203318759200] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- S K Katkam
- Department of Clinical Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences (NIMS), Telangana, Hyderabad, India
| | - L Rajasekhar
- Department of Clinical Immunology and Rheumatology, Nizam's Institute of Medical Sciences (NIMS), Telangana, Hyderabad, India
| | - V K Kutala
- Department of Clinical Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences (NIMS), Telangana, Hyderabad, India
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Association of polymorphic variants of PTPN22, TNF and VDR systems in children with lupus nephritis: a study in trios of Colombian families. BIOMEDICA 2017; 37:260-266. [DOI: 10.7705/biomedica.v37i3.3247] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Revised: 07/25/2016] [Indexed: 11/21/2022]
Abstract
Introducción. El lupus eritematoso sistémico es una enfermedad autoinmune cuya gravedad varía según la raza, género y edad de aparición. Esta disparidad también se observa en los marcadores genéticos asociados con la enfermedad presentes en los genes PTPN22, VDR y TNF. La estratificación genética que presentan las diferentes poblaciones en el mundo puede estar influyendo dicha variabilidad.Objetivo. Analizar la asociación y heredabilidad de variantes genéticas de los genes PTPN22, VDR y TNF con nefritis lúpica pediátrica (NLp) en familias colombianas.Materiales y métodos. Se realizó un estudio basado en familias con 46 tríos (caso/padre y madre). Se genotipificaron las variantes rs2476601 de PTPN22; rs361525 y rs1800629 de TNF; TaqI [rs731236], ApaI [rs7975232], BsmI [rs1544410] y FokI [rs2228570] de VDR mediante qPCR. Se estimó el efecto de la sobretransmisión del alelo de riesgo de padres a hijos y el desequilibrio de ligamiento de los loci VDR y TNF.Resultados. Se observó que el alelo A de rs2476601 en PTPN22 se distribuyó en el 8,69 % [n=16] de los padres mientras que en los casos es de 19,5 % [n=18] al igual que es sobretransmitido de padres a hijos 17 veces más con relación al alelo G (p=0,028). Los polimorfismos de TNF y VDR no se mostraron en desequilibrio de transmisión. Las variantes TaqI, ApaI y BsmI del VDR se mostraron en desequilibrio de ligamiento.Conclusión. Estos hallazgos muestran una asociación del polimorfismo rs2476601 de PTPN22 con NLp debido a su sobretransmisión en el grupo de familias estudiadas.
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Bhallil O, Ibrahimi A, Ouadghiri S, Ouzeddoun N, Benseffaj N, Bayahia R, Essakalli M. HLA Class II with Lupus Nephritis in Moroccan Patients. Immunol Invest 2016; 46:1-9. [DOI: 10.1080/08820139.2016.1208218] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Mosaad YM. Clinical Role of Human Leukocyte Antigen in Health and Disease. Scand J Immunol 2015; 82:283-306. [PMID: 26099424 DOI: 10.1111/sji.12329] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/02/2015] [Accepted: 06/12/2015] [Indexed: 12/19/2022]
Abstract
Most of the genes in the major histocompatibility complex (MHC) region express high polymorphism that is fundamental for their function. The most important function of human leukocyte antigen (HLA) molecule is in the induction, regulation of immune responses and the selection of the T cell repertoire. A clinician's attention is normally drawn to a system only when it malfunctions. The HLA system is no exception in this regard, but in contrast to other systems, it also arouses interest when it functions well - too well, in fact. Population studies carried out over the last several decades have identified a long list of human diseases that are significantly more common among individuals that carry particular HLA alleles including inflammatory, autoimmune and malignant disorders. HLA-disease association is the name of this phenomenon, and the mechanism underlying is still a subject of hot debate. Social behaviours are affected by HLA genes and preference for HLA disparate mates may provide 'good genes' for an individual's offspring. Also, certain HLA genes may be associated with shorter life and others with longer lifespan, but the effects depend both on the genetic background and on the environmental conditions. The following is a general overview of the important functional aspects of HLA in health and diseases.
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Affiliation(s)
- Y M Mosaad
- Clinical Immunology Unit, Clinical Pathology Department & Mansoura Research Center for Cord Stem Cell (MARC_CSC), Mansoura Faculty of Medicine, Mansoura University, Mansoura, Egypt
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Dai CS, Chu CC, Chen SF, Sun CY, Lin M, Lee CC. Association between human leucocyte antigen subtypes and risk of end stage renal disease in Taiwanese: a retrospective study. BMC Nephrol 2015; 16:177. [PMID: 26518904 PMCID: PMC4627610 DOI: 10.1186/s12882-015-0165-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 10/14/2015] [Indexed: 02/06/2023] Open
Abstract
Background End stage renal disease (ESRD) is prevalent in Taiwan. Human leukocyte antigens (HLA) have been found to be associated with the pathogenesis of autoimmune diseases, allergies and inflammatory bowel diseases, and there are emerging evidences of correlations between HLA genotypes and renal diseases such as diabetic nephropathy, IgA nephropathy, and glomerulonephritis. The aim of this study is to investigate detailed HLA subtypes in a case-control study of Taiwanese individuals. Methods The polymorphisms of HLA class I and II antigens in ESRD patients and a healthy control group were retrospectively analyzed. The information of 141 ESRD patients was obtained from the medical record of the Keelung branch of Chang Gung Memorial Hospital and was compared to the HLA type of a control group comprized of 190 healthy unrelated Taiwanese from one of our previous studies. In order to standardize the HLA designation of prior low-resolution typings with the more advanced DNA based typings, all HLA-A, −B and -DR were analyzed using a low resolution serologic equivalent. Results The current work suggests that HLA-DR3 (odds ratio = 1.91, 95 % CI = 1.098–3.324, P = 0.024, Pc = 0.312) and HLA-DR11 (odds ratio = 2.06, 95 % CI = 1.133–3.761, P = 0.021, Pc = 0.273) may represent susceptibility risk factors for the development of ESRD in Taiwanese individuals. On the other hand, HLA-DR8 (odds ratio = 0.47, 95 % CI = 0.236–0.920, p = 0.027. Pc = 0.351) may be a protective factor. HLA-A and -B antigens did not show any contribution of progression to ESRD. However, we note that the significance of all these findings is lost when the results are corrected for multiple comparisons according to Bonferroni. Further investigation with a larger group of patients and control is needed to resolve this issue. Conclusions HLA typing might be a useful clinical method for screening patients with high risk of progression to ESRD.
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Affiliation(s)
- Ciou-Sia Dai
- Department of Internal Medicine, Division of Nephrology, Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Chen-Chung Chu
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan. .,Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li, Taiwan.
| | - Shin-Fan Chen
- Department of Internal Medicine, Division of Nephrology, Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Chiao-Yin Sun
- Department of Internal Medicine, Division of Nephrology, Chang Gung Memorial Hospital, Keelung, Taiwan.
| | - Marie Lin
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan.
| | - Chin-Chan Lee
- Department of Internal Medicine, Division of Nephrology, Chang Gung Memorial Hospital, Keelung, Taiwan. .,Department of Nephrology, Chang Gung Memorial Hospital, Keelung, Taiwan.
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Chen HH, Tsai LJ, Lee KR, Chen YM, Hung WT, Chen DY. Genetic association of complement component 2 polymorphism with systemic lupus erythematosus. ACTA ACUST UNITED AC 2015; 86:122-33. [DOI: 10.1111/tan.12602] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 05/29/2015] [Accepted: 06/09/2015] [Indexed: 12/24/2022]
Affiliation(s)
- H.-H. Chen
- Institute of Molecular Medicine; National Tsing Hua University; Hsinchu Taiwan
| | - L.-J. Tsai
- Graduate Institute of Clinical Medicine; Taipei Medical University; Taipei Taiwan
| | - K.-R. Lee
- Institute of Molecular Medicine; National Tsing Hua University; Hsinchu Taiwan
| | - Y.-M. Chen
- Division of Allergy, Immunology and Rheumatology; Taichung Veterans General Hospital; Taichung Taiwan
- Institute of Microbiology and Immunology; Chung Shan Medical University; Taichung Taiwan
- Institute of Biomedical Science; National Chung Hsing University; Taichung Taiwan
- Rong Hsing Research Center for Translational Medicine; National Chung Hsing University; Taichung Taiwan
| | - W.-T. Hung
- Division of Allergy, Immunology and Rheumatology; Taichung Veterans General Hospital; Taichung Taiwan
- Institute of Microbiology and Immunology; Chung Shan Medical University; Taichung Taiwan
| | - D.-Y. Chen
- Institute of Molecular Medicine; National Tsing Hua University; Hsinchu Taiwan
- Division of Allergy, Immunology and Rheumatology; Taichung Veterans General Hospital; Taichung Taiwan
- Institute of Microbiology and Immunology; Chung Shan Medical University; Taichung Taiwan
- Institute of Biomedical Science; National Chung Hsing University; Taichung Taiwan
- Rong Hsing Research Center for Translational Medicine; National Chung Hsing University; Taichung Taiwan. Faculty of Medicine; National Yang Ming University; Taipei Taiwan
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Peñaranda-Parada E, Quintana G, Yunis JJ, Mantilla R, Rojas W, Panqueva U, Caminos JE, Garces MF, Sanchez E, Rondón-Herrera F, de Jesús Iglesias-Gamarra A. Clinical, serologic, and immunogenetic characterization (HLA-DRB1) of late-onset lupus erythematosus in a Colombian population. Lupus 2015; 24:1293-9. [PMID: 26022697 DOI: 10.1177/0961203315588576] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 04/23/2015] [Indexed: 11/15/2022]
Abstract
INTRODUCTION Late-onset systemic lupus erythematosus (SLE) represents a specific subgroup that is defined as onset after 50 years of age. Late-onset lupus may have a different clinical course and serological findings, which may delay diagnosis and timely treatment. OBJECTIVES The objective of this paper is to determine the clinical, serologic, and immunogenetic differences among Colombian patients with late-onset SLE versus conventional SLE patients. METHODOLOGY This was a cross-sectional study in a Colombian population. Patients and their medical records were analyzed from the services of Rheumatology in Bogotá and met the criteria for SLE, according to the American College of Rheumatology (ACR) revised criteria for the classification of SLE.In a reference group of late-onset SLE patients (98 participants, with an onset after 50 years of age) and a group of conventional SLE patients (72 participants, with an onset of age of 49 years or less), multiple clinical variables (age, clinical criteria for lupus, alopecia, weight loss, fever, Raynaud's phenomenon) and multiple serological variables (blood count, blood chemistry profile, autoantibodies) were analyzed. Additionally, the HLA class II (DRB1) of all the patients was genotyped, including an additional group of patients without the autoimmune disease. Statistical analysis was performed using the STATA 10.0 package. RESULTS In the group of late-onset lupus, there was a higher frequency of pleurisy (p = 0.002), pericarditis (p = 0.026), dry symptoms (p = 0.029), lymphopenia (p = 0.007), and higher titers of rheumatoid factor (p = 0.001) compared with the group of conventional SLE. Late-onset SLE patients had a lower seizure frequency (p = 0.019), weight loss (p = 0.009), alopecia (p < 0.001), and Raynaud's phenomenon (p = 0.013) compared to the conventional SLE group. In late-onset SLE, HLA DR17 (DR3) was found more frequently compared with individuals without autoimmune disease (OR 3.81, 95% CI 1.47 to 10.59) (p = 0.0016). CONCLUSION In the Colombian SLE population analyzed, there may be a probable association of several clinical and serologic variants, which would allow the differentiation of variables in the presentation of the disease among patients with late-onset SLE vs. conventional SLE.
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Affiliation(s)
| | - G Quintana
- Rheumatology Unit, National University of Colombia, Bogotá, Colombia
| | - J J Yunis
- Unit of Genetics, National University of Colombia, Bogotá, Colombia
| | - R Mantilla
- Rheumatology Unit, National University of Colombia, Bogotá, Colombia
| | - W Rojas
- Rheumatology Unit, National University of Colombia, Bogotá, Colombia
| | - U Panqueva
- Rheumatology Unit, National University of Colombia, Bogotá, Colombia
| | - J E Caminos
- Unit of Biochemistry, National University of Colombia, Bogotá, Colombia
| | - M F Garces
- Unit of Biochemistry, National University of Colombia, Bogotá, Colombia
| | - E Sanchez
- Unit of Biochemistry, National University of Colombia, Bogotá, Colombia
| | - F Rondón-Herrera
- Rheumatology Unit, National University of Colombia, Bogotá, Colombia
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Niu Z, Zhang P, Tong Y. Value of HLA-DR genotype in systemic lupus erythematosus and lupus nephritis: a meta-analysis. Int J Rheum Dis 2014; 18:17-28. [PMID: 25546242 DOI: 10.1111/1756-185x.12528] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM Human leukocyte antigen (HLA)-DRB1 allele polymorphisms have been reported to be associated with systemic lupus erythematosus (SLE) susceptibility, but the results of these previous studies have been inconsistent. The purpose of the present study was to systematically summarize and explore whether specific HLA-DRB1 alleles confer susceptibility or resistance to SLE and lupus nephritis. METHODS This review was guided by the preferred reporting items for systematic reviews and meta-analyses (PRISMA) approach. A comprehensive search was made for articles from PubMed, Medline, Elsevier Science, Springer Link and Cochrane Library database. A total of 25 case-control studies on the relationship between gene polymorphism of HLA-DRB l and SLE were performed and data were analyzed and processed using Review Manager 5.2 and Stata 11.0. RESULTS At the allelic level, HLA-DR4, DR11 and DR14 were identified as protective factors for SLE (0.79 [0.69,0.91], P < 0.001; 0.72 [0.60, 0.85], P < 0.0001; 0.47 [0.59, 0.95], P < 0.05, respectively). HLA-DR3, DR9, DR15 were potent risk factors for SLE (1.88 [1.58, 2.23], P < 0.001; 1.24 [1.07, 1.45], P < 0.05; 1.25 [1.10, 1.43], P < 0.001, respectively). However, HLA-DR8 was not statistically significant between the SLE group and control group (OR, 1.11 [0.96, 1.30], P > 0.05). DR4 and 11 (OR, 0.55 [0.39, 0.79], P < 0.01; 0.60 [0.37, 0.96], P < 0.05, respectively) conferred a significant protective effect for lupus nephritis. DR3 and DR15 (OR, 2.00 [1.49, 2.70], P < 0.05; 1.60 [1.21, 2.12], P < 0.001, respectively) were at a high risk of developing lupus nephritis. HLA-DR8, DR9 and DR14 (OR, 1.47 [0.9, 2.33], P > 0.05; 0.90 [0.64, 1.27], P > 0.05; 0.61 [0.36, 1.03], P > 0.05, respectively) were not statistically significant between the lupus nephritis and control groups. CONCLUSIONS The HLA-DR4, DR11, DR14 alleles might be protective factors for SLE and HLA-DR3, DR9, DR15 were potent risk factors. In addition, HLA-DR4 and DR11 alleles might be protective factors for lupus nephritis and DR3 and DR15 suggest a risk role. These results proved that HLA-DR3, DR15, DR4 and DR11 might be identified as predictors for lupus nephritis and SLE.
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Affiliation(s)
- Zhili Niu
- Department of Laboratory Science, Renmin Hospital of Wuhan University, Wuhan, Hu Bei, China
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Caucasian origin of disease associated HLA haplotypes in chinese blood donors with IgA deficiency. J Clin Immunol 2014; 34:157-62. [PMID: 24402621 DOI: 10.1007/s10875-013-9983-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 12/20/2013] [Indexed: 02/07/2023]
Abstract
PURPOSE Selective immunoglobulin A deficiency (IgAD) is the most common primary immunodeficiency in Caucasians with a prevalence of 1:600. However, the prevalence of IgAD is markedly lower in East Asian countries but no genetic studies have been performed on IgAD individuals in the Mongoloid population. METHODS We investigated the prevalence of IgAD in a large number of Chinese blood donors (n = 39,015) in Shanghai, China. We measured immunoglobulin class, IgG subclass and anti-IgA serum levels among the IgAD donors. These donors were subsequently tissue typed and the allele frequency was compared with the Shanghai bone marrow donor HLA registry. RESULTS Seventeen IgAD Chinese blood donors were identified, giving a prevalence of 1: 2,295. Two previously identified IgAD blood donor samples were added in the subsequent tests. Most IgAD donors had serum IgG levels above the normal range with no major IgG subclass deficiency and one donor was weakly positive for anti-IgA. Two-thirds of the Chinese IgAD donors carried Caucasian IgAD associated risk haplotypes, including DRB1*0301-DQB1*0201, DRB1*0701-DQB1*0202 and DRB1*0102-DQB1*0501, giving a significantly higher frequency of these haplotypes as compared to the Shanghai bone marrow donor HLA registry. CONCLUSIONS The prevalence of IgAD in Chinese in this study is markedly lower than in Caucasians. This is the first study to investigate the genetics of IgAD in the Mongoloid population and two-thirds of the Chinese IgAD donors showed a mixture of Caucasian IgAD risk haplotypes. The low prevalence of IgAD could potentially be due to the low frequency of the disease associated risk haplotypes in China.
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Liu X, Wu Y, Yang Y, Wang J, Tao Y, Fu P, Hu Z. Identical twins:one with anti-glomerular basement membrane glomerulonephritis,the other with systemic lupus erythematosus. BMC Nephrol 2013; 14:277. [PMID: 24359316 PMCID: PMC3878216 DOI: 10.1186/1471-2369-14-277] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 11/25/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Anti-glomerular basement membrane (GBM) glomerulonephritis and systemic lupus erythematosus (SLE) are both disorders of the immune system; however, they are known as distinct diseases. Till now no clinical evidence suggests the genetic relationship between these two diseases. Herein, we present two identical twins; one was diagnosed as anti-GBM glomerulonephritis, the other SLE. This is the first clinical report on the genetic relationship between these two diseases. CASE PRESENTATION A 25-year-old female was admitted complaining of intermittent gross hematuria for 6 months and elevated serum creatinine for 1 month. She denied hemoptysis. Laboratory examinations showed hemoglobin 7.4 g/dL, serum creatinine 7.15 mg/dL and albumin 2.8 g/dL. Urinalysis showed hematuria (484 RBCs per high-power field) and proteinuria 4+. Antinuclear antibody, complement levels and ANCAs were all normal. Renal ultrasound showed normal-sized kidneys without obstruction or masses. Serum anti-GBM antibody assay showed 119.70 RU/mL (normal range, <20 RU/mL). Chest X-ray was normal. She was diagnosed as anti-GBM glomerulonephritis and received plasma exchange (2000-3000 ml plasma/exchange, 5 turns), methylprednisolone 0.5 g for three days, plus cyclophosphamide. Although serum anti-GBM antibodies decreased gradually to a normal range, her renal function did not improve. One month later, her identical twin sister was diagnosed as SLE based on malar erythema, arthralgia, antinuclear antibody positive with liter 1:1000, and Anti-Smith (Sm) antibody ++. Anti-GBM antibody and complements were within normal ranges. Further study showed these twins were HLA-DRB1*1501 homozygotes. CONCLUSION The presence of identical twins having anti-GBM nephritis and SLE respectively provides clinical evidence to support that anti-GBM nephritis and lupus may share a common genetic background to some extent, while environment may contribute to disease evolution in part.
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Affiliation(s)
| | | | | | | | | | | | - Zhangxue Hu
- Department of Nephrology, Chengdu, Sichuan Province, China.
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Sun C, Wei L, Luo F, Li Y, Li J, Zhu F, Kang P, Xu R, Xiao L, Liu Z, Xu P. HLA-DRB1 alleles are associated with the susceptibility to sporadic Parkinson's disease in Chinese Han population. PLoS One 2012; 7:e48594. [PMID: 23139797 PMCID: PMC3490875 DOI: 10.1371/journal.pone.0048594] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Accepted: 09/26/2012] [Indexed: 12/19/2022] Open
Abstract
Immune disorders may play an important role in the pathogenesis of Parkinson's disease (PD). Recently, polymorphisms in the HLA-DR region have been found to be associated with sporadic PD in European ancestry populations. However, polymorphisms in the HLA complex are highly variable with ethnic and geographic origin. To explore the relationships between polymorphisms of the HLA-DR region and sporadic PD in Chinese Han population, we genotyped 567 sporadic PD patients and 746 healthy controls in two independent series for the HLA-DRB1 locus with Polymerase chain reaction-sequence based typing(PCR-SBT). The χ(2) test was used to evaluate the distribution of allele frequencies between the patients and healthy controls. The impact of HLA-DRB1 alleles on PD risk was estimated by unconditional logistic regression. We found a significant higher frequency of HLA-DRB1*0301 in sporadic PD patients than in healthy controls and a positive association, which was independent of onset age, between HLA-DRB1*0301 and PD risk. Conversely, a lower frequency of HLA-DRB1*0406 was found in sporadic PD patients than in healthy controls, with a negative association between HLA-DRB1*0406 and PD risk. Furthermore, a meta-analysis involving 195205 individuals was conducted to summarize the frequencies of these two alleles in populations from various ethnic regions, we found a higher frequency of HLA-DRB1*0301, but a lower frequency of HLA-DRB1*0406 in European ancestry populations than that in Asians, this was consistent with the higher prevalence of sporadic PD in European ancestry populations. Based on these results, we speculate that HLA-DRB1 alleles are associated with the susceptibility to sporadic PD in Chinese Han population, among them HLA-DRB1*0301 is a risk allele while the effect of HLA-DRB1*0406 deserves debate.
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Affiliation(s)
- Congcong Sun
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Lei Wei
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People’s Republic of China
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Feifei Luo
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People’s Republic of China
- Department of Neurology, The Third People’s Hospital of Chengdu, Chengdu, People’s Republic of China
| | - Yi Li
- Department of Neurology, Department of Neurology, Red-Cross Hospital in Guangzhou, Guangzhou, People’s Republic of China
| | - Jiaobiao Li
- Department of Neurology, HeYuan City Hospital, Guangdong, People’s Republic of China
| | - Feiqi Zhu
- Department of Neurology, Yuebei People's Hospital of Shantou University Medical College, Guangdong, People’s Republic of China
| | - Ping Kang
- Department of Neurology, The First People’s Hospital of Shaoguan, Guangdong, People’s Republic of China
| | - Rensi Xu
- Department of Neurology, The First Affiliated Hospital of NanChang University, NanChang, People’s Republic of China
| | - LuLu Xiao
- Department of Tissue Typing Center, Nanfang Hospital of Southern Medical University, Guangzhou, People’s Republic of China
| | - Zhuolin Liu
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Pingyi Xu
- Department of Neurology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, People’s Republic of China
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Louthrenoo W, Kasitanon N, Wichainun R, Wangkaew S, Sukitawut W, Ohnogi Y, Hong GH, Kuwata S, Takeuchi F. The genetic contribution of HLA-DRB5*01:01 to systemic lupus erythematosus in Thailand. Int J Immunogenet 2012; 40:126-30. [DOI: 10.1111/j.1744-313x.2012.01145.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 06/25/2012] [Accepted: 07/04/2012] [Indexed: 11/29/2022]
Affiliation(s)
- W. Louthrenoo
- Division of Rheumatology; Department of Internal Medicine; Faculty of Medicine; Chiang Mai University; Chiang Mai; Thailand
| | - N. Kasitanon
- Division of Rheumatology; Department of Internal Medicine; Faculty of Medicine; Chiang Mai University; Chiang Mai; Thailand
| | - R. Wichainun
- Division of Rheumatology; Department of Internal Medicine; Faculty of Medicine; Chiang Mai University; Chiang Mai; Thailand
| | - S. Wangkaew
- Division of Rheumatology; Department of Internal Medicine; Faculty of Medicine; Chiang Mai University; Chiang Mai; Thailand
| | - W. Sukitawut
- Division of Rheumatology; Department of Internal Medicine; Faculty of Medicine; Chiang Mai University; Chiang Mai; Thailand
| | - Y. Ohnogi
- Department of Internal Medicine (Allergy and Rheumatology); Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - G. H. Hong
- Department of Internal Medicine (Allergy and Rheumatology); Faculty of Medicine; University of Tokyo; Tokyo; Japan
| | - S. Kuwata
- Third Department of Internal Medicine; Teikyo University Chiba Medical Center; Teikyo University School of Medicine; Chiba; Japan
| | - F. Takeuchi
- Department of Internal Medicine (Allergy and Rheumatology); Faculty of Medicine; University of Tokyo; Tokyo; Japan
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The beneficial role of vitamin D in systemic lupus erythematosus (SLE). Clin Rheumatol 2012; 31:1423-35. [DOI: 10.1007/s10067-012-2033-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 07/04/2012] [Indexed: 02/06/2023]
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Denny JC, Ritchie MD, Basford MA, Pulley JM, Bastarache L, Brown-Gentry K, Wang D, Masys DR, Roden DM, Crawford DC. PheWAS: demonstrating the feasibility of a phenome-wide scan to discover gene-disease associations. Bioinformatics 2010; 26:1205-10. [PMID: 20335276 PMCID: PMC2859132 DOI: 10.1093/bioinformatics/btq126] [Citation(s) in RCA: 780] [Impact Index Per Article: 55.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
MOTIVATION Emergence of genetic data coupled to longitudinal electronic medical records (EMRs) offers the possibility of phenome-wide association scans (PheWAS) for disease-gene associations. We propose a novel method to scan phenomic data for genetic associations using International Classification of Disease (ICD9) billing codes, which are available in most EMR systems. We have developed a code translation table to automatically define 776 different disease populations and their controls using prevalent ICD9 codes derived from EMR data. As a proof of concept of this algorithm, we genotyped the first 6005 European-Americans accrued into BioVU, Vanderbilt's DNA biobank, at five single nucleotide polymorphisms (SNPs) with previously reported disease associations: atrial fibrillation, Crohn's disease, carotid artery stenosis, coronary artery disease, multiple sclerosis, systemic lupus erythematosus and rheumatoid arthritis. The PheWAS software generated cases and control populations across all ICD9 code groups for each of these five SNPs, and disease-SNP associations were analyzed. The primary outcome of this study was replication of seven previously known SNP-disease associations for these SNPs. RESULTS Four of seven known SNP-disease associations using the PheWAS algorithm were replicated with P-values between 2.8 x 10(-6) and 0.011. The PheWAS algorithm also identified 19 previously unknown statistical associations between these SNPs and diseases at P < 0.01. This study indicates that PheWAS analysis is a feasible method to investigate SNP-disease associations. Further evaluation is needed to determine the validity of these associations and the appropriate statistical thresholds for clinical significance. AVAILABILITY The PheWAS software and code translation table are freely available at http://knowledgemap.mc.vanderbilt.edu/research.
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Affiliation(s)
- Joshua C Denny
- Department of Biomedical Informatics, Vanderbilt University, Nashville, TN, USA.
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