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Guo T, Long Y, Shen Q, Guo W, Duan W, Ouyang X, Peng H. Clinical profiles of SS-ILD compared with SS-NILD in a Chinese population: a retrospective analysis of 735 patients. Ann Med 2021; 53:1340-1348. [PMID: 34402690 PMCID: PMC8382016 DOI: 10.1080/07853890.2021.1965205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 08/02/2021] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Interstitial lung disease (ILD) is a serious complication in patients with Sjögren's syndrome (SS). Most studies on primary SS (pSS) with ILD are limited in sample size, and studies on secondary SS (sSS) with ILD are rare. This study aimed to elucidate both primary and secondary SS-associated ILD (SS-ILD) based on a large cohort. METHODS The medical records of hospitalized patients diagnosed with SS at the Second Xiangya Hospital of Central South University from January 2010 to May 2020 were retrospectively reviewed. Clinical manifestations, medical history, biological results and imaging data were collected. RESULTS Of the 735 SS patients enrolled in this study, 563 (76.6%) were diagnosed with pSS, 172 (23.4%) were diagnosed with sSS. Additionally, 316 (43.0%) were diagnosed with SS-ILD. No significant difference was found between the pSS and sSS groups concerning the incidence of ILD (p = .718). Factors associated with SS-ILD were older age (p < .001), male sex (p = .032), female sex at menopause (p = .002), Raynaud's phenomenon (p < .001), low levels of albumin (p = .010) and respiratory symptoms (p < .001). The SS-ILD group showed higher counts of platelets (p < .001). The three most frequent high-resolution CT (HRCT) findings of SS-ILD were irregular linear opacities (42.7%), grid shadows (30.7%) and pleural thickening (28.5%). NSIP (56.3%) was the most frequent HRCT pattern. Compared with pSS patients with ILD (pSS-ILD) patients, sSS patients with ILD (sSS-ILD) patients had a higher incidence of proteinuria (p < .001) and hypercreatinaemia (p = .013), a higher level of erythrocyte sedimentation rate (ESR) (p = .003), low levels of complement 3 (C3) (p = .013), lymphocytes (p = .009) and leukocytes (p = .024), and worse DLCO (%Pred) (p = .035). CONCLUSIONS ILD is a common pulmonary involvement in both pSS patients and sSS patients. Older age, male sex, female sex at menopause, Raynaud's phenomenon, low albumin levels and respiratory symptoms are risk factors associated with SS-ILD. NSIP is important HRCT feature of SS-ILD. sSS-ILD patients showed worse laboratory results and pulmonary function.KEY MESSAGEOlder age, male sex, female sex at menopause, Raynaud's phenomenon, low albumin levels and respiratory symptoms are risk factors associated with SS-ILD.SS-ILD patients show higher counts of platelets and less purpura.sSS-ILD patients have worse laboratory results and pulmonary function.
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Affiliation(s)
- Ting Guo
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
| | - Yaomei Long
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
| | - Qinxue Shen
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
| | - Wei Guo
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
| | - Wang Duan
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
| | - Xiaoli Ouyang
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
| | - Hong Peng
- Department of Respiratory and Critical Care Medicine, The Second Xiangya Hospital of Central-South University, Changsha, China
- Research Unit of Respiratory Disease, Central-South University, Changsha, China
- The Respiratory Disease Diagnosis and Treatment Center of Hunan Province, Changsha, China
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Azuma A, Chung L, Behera D, Chung M, Kondoh Y, Ogura T, Okamoto M, Swarnakar R, Zeng X, Zou H, Meng X, Gahlemann M, Alves M, Kuwana M. Efficacy and safety of nintedanib in Asian patients with systemic sclerosis-associated interstitial lung disease: Subgroup analysis of the SENSCIS trial. Respir Investig 2020; 59:252-259. [PMID: 33223487 DOI: 10.1016/j.resinv.2020.10.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 10/14/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND OBJECTIVE In the SENSCIS trial in patients with systemic sclerosis-associated interstitial lung disease (SSc-ILD), nintedanib reduced the rate of decline in forced vital capacity (FVC) (mL/year) over 52 weeks by 44% in comparison with placebo, with manageable adverse events in most patients. We analyzed the efficacy and safety of nintedanib in patients of Asian race. METHODS Patients with SSc-ILD were randomized to receive nintedanib or placebo. The outcomes over 52 weeks were analyzed in Asian versus non-Asian patients. RESULTS Of the 288 patients in each treatment group, 62 (21.5%) in the nintedanib group and 81 (28.1%) in the placebo group were Asian; 90.2% of the Asian patients were enrolled in Asian countries. In the placebo group, the rate of FVC decline over 52 weeks was consistent between Asian and non-Asian patients (-99.9 and -90.6 mL/year, respectively). The effect of nintedanib on reducing the rate of FVC decline over 52 weeks was consistent between Asian (difference, 44.3 mL/year [95% CI: -32.8, 121.4]) and non-Asian patients (difference, 39.0 mL/year [95% CI: -5.1, 83.1]) (treatment-by-time-by-subgroup interaction, p = 0.91). Diarrhea was the most frequent adverse event and was reported in similar proportions of Asian and non-Asian patients in the nintedanib group (80.6% and 74.3%, respectively) and placebo group (28.4% and 32.9%, respectively). CONCLUSIONS In patients with SSc-ILD, nintedanib had a consistent benefit on slowing the progression of SSc-ILD in Asian and non-Asian patients, with a similar adverse event profile. TRIAL REGISTRATION ClinicalTrials.gov NCT02597933.
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Affiliation(s)
- Arata Azuma
- Department of Pulmonary Medicine and Oncology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan.
| | - Lorinda Chung
- Departments of Medicine and Dermatology, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Digambar Behera
- Department of Pulmonary Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Melody Chung
- Department of Medicine, Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA
| | - Yasuhiro Kondoh
- Department of Respiratory Medicine and Allergy, Tosei General Hospital, Japan
| | - Takashi Ogura
- Department of Respiratory Medicine, Kanagawa Cardiovascular and Respiratory Centre, Yokohama, Japan
| | - Masaki Okamoto
- Department of Internal Medicine, Division of Respirology, Neurology, and Rheumatology, Kurume University School of Medicine, Japan
| | - Rajesh Swarnakar
- Department of Respiratory Medicine, Getwell Hospital and Research Institute, Nagpur, Maharashtra, India
| | - Xiaofeng Zeng
- Department of Rheumatology, Peking Union Medical College Hospital, Beijing, China
| | - Heijan Zou
- Division of Rheumatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Xianhua Meng
- Boehringer Ingelheim (China) Investment Co., Ltd, Shanghai, China
| | | | | | - Masataka Kuwana
- Department of Allergy and Rheumatology, Nippon Medical School Graduate School of Medicine, Tokyo, Japan
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Chen S, Wang Q, Wu CY, Wu QJ, Li Y, Wu ZY, Li P, Sun F, Zheng WJ, Deng CW, Zhang FC, Li YZ. A single-nucleotide polymorphism of CCL21 rs951005 T>C is associated with susceptibility of polymyositis and such patients with interstitial lung disease in a Chinese Han population. Clin Exp Rheumatol 2015; 33:639-646. [PMID: 26320593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Accepted: 01/22/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVES Our objective was to better understand the roles of single nucleotide polymorphisms (SNPs) in the CCL21, ERBB3, and TERT genes region in the development of idiopathic inflammatory myopathies (IIMs), we explored the associations between SNPs in the mentioned three genes and IIMs susceptibility in a Chinese Han population. METHODS Chinese polymyositis (PM) patients (n =291), dermatomyositis (DM) patients (n=526) and ethnically-matched healthy controls (n =968) were genotyped for the CCL21 region SNPs (rs951005 and rs2492358), ERBB3 (rs2292239 and rs11171739), and TERT (rs2853676 and rs10069690), by using the Sequenom MassArray system. RESULTS Our study indicated strong allele and genotype associations between rs951005 (OR: 1.65, 95%CI: 1.18-2.30, Pc=0.015; Pc=0.041, respectively) in CCL21 gene and PM patients. Additionally, rs951005 was associated with interstitial lung disease (ILD) in PM patients (Pc =0.01), and was associated with PM patients in additive model. However, the Chinese Han PM/DM patients and controls had statistically similar frequencies of alleles, genotypes and different genetic models (additive, dominant, and recessive) of ERBB3 and TERT polymorphisms. CONCLUSIONS This was the first study to demonstrate that the CCL21 gene SNP (rs951005) might confer genetic predisposition to PM patients or such patients with ILD in a Chinese Han population.
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Affiliation(s)
- Si Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qian Wang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chan Yuan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qing Jun Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Yuan Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Zi Yan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Ping Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Fei Sun
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Wen Jie Zheng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chui Wen Deng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Feng Chun Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Yong Zhe Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
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Chen S, Wang Q, Wu Z, Li Y, Li P, Sun F, Zheng W, Wu Q, Wu C, Deng C, Zhang F, Li Y. Genetic association study of TNFAIP3, IFIH1, IRF5 polymorphisms with polymyositis/dermatomyositis in Chinese Han population. PLoS One 2014; 9:e110044. [PMID: 25337792 PMCID: PMC4206287 DOI: 10.1371/journal.pone.0110044] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 09/05/2014] [Indexed: 11/25/2022] Open
Abstract
Background Single-nucleotide polymorphisms (SNPs) in the TNFAIP3, IFIH1, and IRF5 genes have been associated with several auto-inflammation diseases, while the susceptibility between these genes and idiopathic inflammatory myopathies (IIMs) were not reported. This study aimed to investigate whether TNFAIP3, IFIH1, and IRF5 gene polymorphisms confer susceptibility for the IIMs in Chinese Han population. Methods A large case–control study of Chinese subjects with polymyositis (PM) (n = 298) and dermatomyositis (DM) (n = 530) was accomplished. 968 healthy and ethnically matched controls were available for comparison. Six SNPs in the TNFAIP3 region (rs2230926 and rs5029939), the IFIH1 gene (rs1990760 and rs3747517) and the IRF5 region (rs4728142 and rs729302) were assessed and genotyped using the Sequenom MassArray iPLEX platform. Results Our study indicated a strong allele association was observed in PM/DM and PM patients for rs2230926 (OR: 1.61, 95%CI: 1.20–2.16, Pc = 7.5×10−3; OR: 1.88, 95%CI: 1.30–2.74, Pc = 4.0×10−3, respectively) and rs5029939 (OR: 1.64, 95%CI: 1.21–2.21, Pc = 6.0×10−3; OR: 1.88, 95%CI: 1.28–2.76, Pc = 5.5×10−3,respectively). And rs2230926 and rs5029939 were significantly associated with interstitial lung disease (ILD) in PM/DM and PM patients (Pc = 0.04 and Pc = 0.016; Pc = 0.02 and Pc = 0.03, respectively). In addition, rs4728142 allele and genotype had significant association with PM/DM patients (Pc = 0.026 and Pc = 0.048, respectively). Further analysis with three logistic regression genetic models revealed statistically significant difference in the genotypic distribution in the PM/DM, PM or DM patients when the additive and dominant models were used. Conclusions This was the first study to reveal TNFAIP3 and IRF5 polymorphisms were associated with PM/DM patients or these patients with ILD, indicating that TNFAIP3 and IRF5 might be the susceptibility gene for PM/DM patients in Chinese Han population.
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Affiliation(s)
- Si Chen
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qian Wang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Ziyan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Yuan Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Ping Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Fei Sun
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Wenjie Zheng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Qingjun Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chanyuan Wu
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Chuiwen Deng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
| | - Fengchun Zhang
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
- * E-mail: (FZ); (YL)
| | - Yongzhe Li
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China
- * E-mail: (FZ); (YL)
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Ju JH, Kim SI, Lee JH, Lee SI, Yoo WH, Choe JY, Chung SH, Lee J, Lee YH, Lee SS, Yoon HJ, Yoon CH, Kim HY, Park SH. Risk of interstitial lung disease associated with leflunomide treatment in Korean patients with rheumatoid arthritis. ACTA ACUST UNITED AC 2007; 56:2094-6. [PMID: 17530652 DOI: 10.1002/art.22666] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ji Hyeon Ju
- The Catholic University of Korea, Seoul, South Korea
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Sato S, Hirakata M, Kuwana M, Nakamura K, Suwa A, Inada S, Mimori T, Ikeda Y. Clinical characteristics of Japanese patients with anti-PL-7 (anti-threonyl-tRNA synthetase) autoantibodies. Clin Exp Rheumatol 2005; 23:609-15. [PMID: 16173235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
OBJECTIVE The clinical and laboratory features of seven Japanese patients with anti-aminoacyl-tRNA synthetase (ARS) autoantibodies against PL-7 (anti-threonyl-tRNA synthetase) were analyzed and compared with previously published findings. METHODS Serum samples from 1,135 Japanese patients with various autoimmune diseases were screened for anti-PL-7 antibodies using RNA and protein immunoprecipitation assays. The patients whose sera contained anti-PL-7 antibodies were assessed regarding clinical symptoms and clinical course. RESULTS Sera from seven patients were found to have anti-PL-7 antibodies. These autoantibodies were associated with polymyositis/dermatomyositis (PM/DM) and/or interstitial lung disease (ILD). The clinical diagnoses of these seven patients were PM - systemic sclerosis (SSc) overlap (5 patients), DM (1 patient) and idiopathic pulmonary fibrosis (IPF) (1 patient). All patients had ILD with a chronic course and six also had arthritis (85%) and five sclerodactyly (71%). CONCLUSIONS These results indicate that anti-PL-7 autoantibodies are closely associated with PM-SSc overlap as well as ILD, arthritis and sclerodactyly in our series of Japanese patients.
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Affiliation(s)
- S Sato
- Department of Internal Medicine, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, Japan.
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Kuwana M, Kaburaki J, Arnett FC, Howard RF, Medsger TA, Wright TM. Influence of ethnic background on clinical and serologic features in patients with systemic sclerosis and anti-DNA topoisomerase I antibody. Arthritis Rheum 1999; 42:465-74. [PMID: 10088769 DOI: 10.1002/1529-0131(199904)42:3<465::aid-anr11>3.0.co;2-y] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To investigate the effect of ethnicity on clinical and serologic expression in patients with systemic sclerosis (SSc) and anti-DNA topoisomerase I (anti-topo I) antibody. METHODS Clinical and serologic features, as well as HLA class II allele frequencies, were compared among 47 North American white, 15 North American black, 43 Japanese, and 12 Choctaw Native American SSc patients with anti-topo I antibody. RESULTS The frequency of progressive pulmonary interstitial fibrosis was lower, and cumulative survival rates were better in white compared with black and Japanese patients. Sera of white and black patients frequently recognized the portion adjacent to the carboxyl terminus of topo I, sera of Japanese patients preferentially recognized the portion adjacent to the amino terminus of topo I, and sera of Choctaw patients recognized both portions of topo I. Anti-RNA polymerase II and anti-SSA/Ro antibodies were present together with anti-topo I antibody more frequently in sera of Japanese patients than in sera of white patients. The HLA-DRB1 alleles associated with anti-topo I antibody differed; i.e., DRB1*1101-*1104 in whites and blacks, DRB1*1502 in Japanese, and DRB1*1602 in Choctaws. Multivariate analysis showed that ethnic background was an independent determinant affecting development of severe lung disease as well as survival. CONCLUSION Clinical and serologic features in SSc patients were strongly influenced by ethnic background. The variability of disease expression in the 4 ethnic groups suggests that multiple factors linked to ethnicity, including genetic and environmental factors, modulate clinical manifestations, disease course, and autoantibody status in SSc.
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MESH Headings
- Adult
- Aged
- Alleles
- Antibodies, Antinuclear/analysis
- Antibodies, Antinuclear/immunology
- Antibody Specificity
- Asian People
- B-Lymphocytes/immunology
- DNA Topoisomerases, Type I/immunology
- Disease Progression
- Epitopes/immunology
- Female
- HLA-DQ Antigens/genetics
- HLA-DQ Antigens/immunology
- HLA-DQ beta-Chains
- HLA-DR Antigens/genetics
- HLA-DR Antigens/immunology
- HLA-DRB1 Chains
- Histocompatibility Antigens Class II/analysis
- Histocompatibility Antigens Class II/immunology
- Humans
- Immunoglobulin A/blood
- Immunoglobulin G/blood
- Immunoglobulin M/blood
- Indians, North American
- Japan
- Lung Diseases, Interstitial/ethnology
- Lung Diseases, Interstitial/immunology
- Lung Diseases, Interstitial/mortality
- Male
- Middle Aged
- Multivariate Analysis
- Prognosis
- Random Allocation
- Scleroderma, Systemic/ethnology
- Scleroderma, Systemic/immunology
- Scleroderma, Systemic/mortality
- Survival Analysis
- White People
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Affiliation(s)
- M Kuwana
- University of Pittsburgh School of Medicine, Pennsylvania, USA
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