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Santos VC, Grecco M, Pereira KMC, Terzian CCN, Andrade LEC, Silva NP. Fc gamma receptor IIIb polymorphism and systemic lupus erythematosus: association with disease susceptibility and identification of a novel FCGR3B*01 variant. Lupus 2016; 25:1237-43. [PMID: 26946294 DOI: 10.1177/0961203316636952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 02/11/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The objective of this study was to evaluate the association between Fc gamma receptor IIIb polymorphism and susceptibility to systemic lupus erythematosus and clinical traits of the disease. METHODS Genomic DNA was obtained from 303 consecutive systemic lupus erythematosus patients and 300 healthy blood donors from the southeastern region of Brazil. The polymorphic region of the FCGR3B gene was sequenced and the alleles FCGR3B*01, FCGR3B*02 and FCGR3B*03 were analyzed. RESULTS The FCGR3B*01 allele was more frequent in systemic lupus erythematosus patients (43.1%) while the FCGR3B*02 allele prevailed among controls (63.7%) (P = 0.001). The FCGR3B*03 allele was found equally in both groups. The FCGR3B*01/*01 (20.7%) and FCGR3B*01/*02 (41.1%) genotypes were more frequent among systemic lupus erythematosus patients (P = 0.028 and P = 0.012, respectively) while the FCGR3B*02/*02 genotype was more frequent in controls (45.5%) (P < 0.001). One variant of the FCGR3B*01 allele previously described in Germany was found in only one control. A new variant of the FCGR3B*01 allele with two substitutions (A227G/G277A) was found in one control. Three variants of the FCGR3B*02 allele previously described in African-Americans, Brazilians, Chinese and Japanese were found in ten 10 patients and two controls. In addition, several single nucleotide polymorphisms at non-polymorphic positions were identified in both patients and controls. CONCLUSION Susceptibility to systemic lupus erythematosus was associated with the FCGR3B*01 allele, as well as with the FCGR3B*01/*01 and FCGR3B*01/*02 genotypes. No association was found between FCGR3B genotypes and clinical manifestations, disease severity or the presence of autoantibodies.
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Affiliation(s)
- V C Santos
- Disciplina de Reumatologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - M Grecco
- Disciplina de Reumatologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - K M C Pereira
- Disciplina de Reumatologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - C C N Terzian
- Disciplina de Hematologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - L E C Andrade
- Disciplina de Reumatologia, Universidade Federal de São Paulo, São Paulo, Brazil
| | - N P Silva
- Disciplina de Reumatologia, Universidade Federal de São Paulo, São Paulo, Brazil
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Ho RC, Ong H, Thiaghu C, Lu Y, Ho CS, Zhang MW. Genetic Variants That Are Associated with Neuropsychiatric Systemic Lupus Erythematosus. J Rheumatol 2016; 43:541-51. [PMID: 26773105 DOI: 10.3899/jrheum.150884] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/15/2015] [Indexed: 12/15/2022]
Abstract
OBJECTIVE While genetic risks have been implicated in systemic lupus erythematosus (SLE), the involvement of various genotypes in neuropsychiatric SLE (NPSLE) remains uncertain. The present metaanalysis aimed to combine data from different studies and evaluate the association between each genotype and the risk of developing NPSLE. METHODS Studies were searched and retrieved from online databases (PubMed, EMBASE, BIOSIS, and ScienceDirect). Case-control studies were chosen if they reported genotype frequencies of the γ Fc region (FCγR) receptors II-A, III-A, and III-B; tumor necrosis factor-α (TNF-α); mannan-binding lectin (MBL); integrin alpha M (ITGAM); interleukin (IL) 1, IL-1β, and IL-6; IL-10 promoter; and vitamin D genes. The OR were used to assess the strength of this association between patients with NPSLE and SLE. RESULTS A total of 33 studies were considered in this metaanalysis. The results suggest that these genotypes demonstrated a significant association with NPSLE: the homozygous FCγR IIIa 158 FF genotype (OR 1.89, p = 0.03 for FF vs VV + FV), heterozygous FCγR IIIb NA1/2 genotype (OR 2.14, p = 0.03 for NA1/2 vs NA1/1; OR 1.81, p = 0.04 for NA1/2 vs NA1/1 + NA2/2), and homozygous ITGAM rs1143679 HH genotype (OR 3.39, p = 0.04 for HH vs RH; OR 3.11, p = 0.048 for HH vs RR + RH). Polymorphisms of the TNF-α, MBL2, IL-1, IL-1β, IL-6, IL-10 promoter, and vitamin D receptor genes did not show a statistically significant association with the risk of developing NPSLE (p > 0.05). CONCLUSION This metaanalysis indicates that polymorphisms in the pathways of immune complex clearance, such as the FcγRIIIa, FcγRIIIb, and ITGAM genotypes, are potential susceptibility genes for NPSLE.
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Affiliation(s)
- Roger C Ho
- From the Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Institute of Mental Health, Singapore; Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine, Hangzhou, China.R.C. Ho, FRCPC, Assistant Professor, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; H. Ong, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; C. Thiaghu, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Y. Lu, PhD, Assistant Professor, Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine; C.S. Ho, MRCPsych, Specialist Registrar, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; M.W. Zhang, MRCPsych, Specialist Registrar, Institute of Mental Health
| | - Huiyi Ong
- From the Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Institute of Mental Health, Singapore; Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine, Hangzhou, China.R.C. Ho, FRCPC, Assistant Professor, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; H. Ong, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; C. Thiaghu, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Y. Lu, PhD, Assistant Professor, Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine; C.S. Ho, MRCPsych, Specialist Registrar, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; M.W. Zhang, MRCPsych, Specialist Registrar, Institute of Mental Health
| | - Chandra Thiaghu
- From the Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Institute of Mental Health, Singapore; Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine, Hangzhou, China.R.C. Ho, FRCPC, Assistant Professor, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; H. Ong, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; C. Thiaghu, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Y. Lu, PhD, Assistant Professor, Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine; C.S. Ho, MRCPsych, Specialist Registrar, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; M.W. Zhang, MRCPsych, Specialist Registrar, Institute of Mental Health
| | - Yanxia Lu
- From the Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Institute of Mental Health, Singapore; Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine, Hangzhou, China.R.C. Ho, FRCPC, Assistant Professor, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; H. Ong, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; C. Thiaghu, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Y. Lu, PhD, Assistant Professor, Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine; C.S. Ho, MRCPsych, Specialist Registrar, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; M.W. Zhang, MRCPsych, Specialist Registrar, Institute of Mental Health.
| | - Cyrus S Ho
- From the Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Institute of Mental Health, Singapore; Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine, Hangzhou, China.R.C. Ho, FRCPC, Assistant Professor, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; H. Ong, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; C. Thiaghu, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Y. Lu, PhD, Assistant Professor, Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine; C.S. Ho, MRCPsych, Specialist Registrar, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; M.W. Zhang, MRCPsych, Specialist Registrar, Institute of Mental Health
| | - Melvyn W Zhang
- From the Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Institute of Mental Health, Singapore; Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine, Hangzhou, China.R.C. Ho, FRCPC, Assistant Professor, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; H. Ong, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; C. Thiaghu, MBBS, Medical Officer, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; Y. Lu, PhD, Assistant Professor, Department of Clinical Psychology and Psychiatry/School of Public Health, Zhejiang University College of Medicine; C.S. Ho, MRCPsych, Specialist Registrar, Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore; M.W. Zhang, MRCPsych, Specialist Registrar, Institute of Mental Health
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Relle M, Weinmann-Menke J, Scorletti E, Cavagna L, Schwarting A. Genetics and novel aspects of therapies in systemic lupus erythematosus. Autoimmun Rev 2015; 14:1005-18. [PMID: 26164648 DOI: 10.1016/j.autrev.2015.07.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 07/06/2015] [Indexed: 02/06/2023]
Abstract
Autoimmune diseases, such as rheumatoid arthritis, multiple sclerosis, autoimmune hepatitis and inflammatory bowel disease, have complex pathogeneses and the factors which cause these disorders are not well understood. But all have in common that they arise from a dysfunction of the immune system, interpreting self components as foreign antigens. Systemic lupus erythematosus (SLE) is one of these complex inflammatory disorders that mainly affects women and can lead to inflammation and severe damage of virtually any tissue and organ. Recently, the application of advanced techniques of genome-wide scanning revealed more genetic information about SLE than previously possible. These case-control or family-based studies have provided evidence that SLE susceptibility is based (with a few exceptions) on an individual accumulation of various risk alleles triggered by environmental factors and also help to explain the discrepancies in SLE susceptibility between different populations or ethnicities. Moreover, during the past years new therapies (autologous stem cell transplantation, B cell depletion) and improved conventional treatment options (corticosteroids, traditional and new immune-suppressants like mycophenolate mofetile) changed the perspective in SLE therapeutic approaches. Thus, this article reviews genetic aspects of this autoimmune disease, summarizes clinical aspects of SLE and provides a general overview of conventional and new therapeutic approaches in SLE.
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Affiliation(s)
- Manfred Relle
- First Department of Medicine, University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany
| | - Julia Weinmann-Menke
- First Department of Medicine, University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany
| | - Eva Scorletti
- Division of Rheumatology, IRCCS Fondazione Policlinico San Matteo, Lombardy, Pavia, Italy
| | - Lorenzo Cavagna
- Division of Rheumatology, IRCCS Fondazione Policlinico San Matteo, Lombardy, Pavia, Italy
| | - Andreas Schwarting
- First Department of Medicine, University Medical Center of the Johannes-Gutenberg University Mainz, Mainz, Germany; Acura Centre of Rheumatology Rhineland-Palatinate, Bad Kreuznach, Germany.
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