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Furderer ML, Berhe B, Chen TC, Wincovitch S, Jiang X, Tayebi N, Sidransky E, Han TU. A Comparative Biochemical and Pathological Evaluation of Brain Samples from Knock-In Murine Models of Gaucher Disease. Int J Mol Sci 2024; 25:1827. [PMID: 38339105 PMCID: PMC10855869 DOI: 10.3390/ijms25031827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/26/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Gaucher disease (GD) is a lysosomal storage disorder stemming from biallelic mutations in GBA1, characterized by glucocerebrosidase dysfunction and glucocerebroside and glucosylsphingosine accumulation. Since phenotypes of murine models of GD often differ from those in patients, the careful characterization of Gba1 mutant mice is necessary to establish their ability to model GD. We performed side-by-side comparative biochemical and pathologic analyses of four murine Gba1 models with genotypes L444P/L444P (p.L483P/p.L483P), L444P/null, D409H/D409H (p.D448H/p.D448H) and D409H/null, along with matched wildtype mice, all with the same genetic background and cage conditions. All mutant mice exhibited significantly lower glucocerebrosidase activity (p < 0.0001) and higher glucosylsphingosine levels than wildtype, with the lowest glucocerebrosidase and the highest glucosylsphingosine levels in mice carrying a null allele. Although glucocerebrosidase activity in L444P and D409H mice was similar, D409H mice showed more lipid accumulation. No Gaucher or storage-like cells were detected in any of the Gba1 mutant mice. Quantification of neuroinflammation, dopaminergic neuronal loss, alpha-synuclein levels and motor behavior revealed no significant findings, even in aged animals. Thus, while the models may have utility for testing the effect of different therapies on enzymatic activity, they did not recapitulate the pathological phenotype of patients with GD, and better models are needed.
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Affiliation(s)
- Makaila L. Furderer
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; (M.L.F.); (B.B.); (T.C.C.); (N.T.)
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Bahafta Berhe
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; (M.L.F.); (B.B.); (T.C.C.); (N.T.)
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Tiffany C. Chen
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; (M.L.F.); (B.B.); (T.C.C.); (N.T.)
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Stephen Wincovitch
- Advanced Imaging & Analysis Core, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Xuntian Jiang
- Washington University Metabolomics Facility, Washington University School of Medicine, St. Louis, MO 63110, USA;
| | - Nahid Tayebi
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; (M.L.F.); (B.B.); (T.C.C.); (N.T.)
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Ellen Sidransky
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; (M.L.F.); (B.B.); (T.C.C.); (N.T.)
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Tae-Un Han
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA; (M.L.F.); (B.B.); (T.C.C.); (N.T.)
- Aligning Science Across Parkinson’s (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
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Han TU, Sam R, Sidransky E. Small Molecule Chaperones for the Treatment of Gaucher Disease and GBA1-Associated Parkinson Disease. Front Cell Dev Biol 2020; 8:271. [PMID: 32509770 PMCID: PMC7248408 DOI: 10.3389/fcell.2020.00271] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Accepted: 03/30/2020] [Indexed: 12/15/2022] Open
Abstract
Parkinson disease, the second most common movement disorder, is a complex neurodegenerative disorder hallmarked by the accumulation of alpha-synuclein, a neural-specific small protein associated with neuronal synapses. Mutations in the glucocerebrosidase gene (GBA1), implicated in the rare, autosomal recessive lysosomal disorder Gaucher disease, are the most common known genetic risk factor for Parkinson disease. Insights into the inverse relationship between glucocerebrosidase and alpha-synuclein have led to new therapeutic approaches for the treatment of Gaucher disease and GBA1-associated Parkinson disease. Unlike the current drugs used to treat Gaucher disease, which are highly expensive and do not cross the blood-brain-barrier, new small molecules therapies, including competitive and non-competitive chaperones that enhance glucocerebrosidase levels are being developed to overcome these limitations. Some of these include iminosugars, ambroxol, other competitive glucocerebrosidase inhibitors, and non-inhibitory chaperones or activators that do not compete for the active site. These drugs, which have been shown in different disease models to increase glucocerebrosidase activity, could have potential as a therapy for Gaucher disease and GBA1- associated Parkinson disease. Some have been demonstrated to reduce α-synuclein levels in pre-clinical studies using cell-based or animal models of GBA1-associated Parkinson disease, and may also have utility for idiopathic Parkinson disease.
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Affiliation(s)
- Tae-Un Han
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Richard Sam
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
| | - Ellen Sidransky
- Medical Genetics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, United States
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Barnes TD, Wozniak DF, Gutierrez J, Han TU, Drayna D, Holy TE. A Mutation Associated with Stuttering Alters Mouse Pup Ultrasonic Vocalizations. Curr Biol 2016; 26:S0960-9822(16)30179-8. [PMID: 27151663 PMCID: PMC5063665 DOI: 10.1016/j.cub.2016.02.068] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/18/2016] [Accepted: 02/29/2016] [Indexed: 12/11/2022]
Abstract
A promising approach to understanding the mechanistic basis of speech is to study disorders that affect speech without compromising other cognitive or motor functions. Stuttering, also known as stammering, has been linked to mutations in the lysosomal enzyme-targeting pathway, but how this remarkably specific speech deficit arises from mutations in a family of general "cellular housekeeping" genes is unknown. To address this question, we asked whether a missense mutation associated with human stuttering causes vocal or other abnormalities in mice. We compared vocalizations from mice engineered to carry a mutation in the Gnptab (N-acetylglucosamine-1-phosphotransferase subunits alpha/beta) gene with wild-type littermates. We found significant differences in the vocalizations of pups with the human Gnptab stuttering mutation compared to littermate controls. Specifically, we found that mice with the mutation emitted fewer vocalizations per unit time and had longer pauses between vocalizations and that the entropy of the temporal sequence was significantly reduced. Furthermore, Gnptab missense mice were similar to wild-type mice on an extensive battery of non-vocal behaviors. We then used the same language-agnostic metrics for auditory signal analysis of human speech. We analyzed speech from people who stutter with mutations in this pathway and compared it to control speech and found abnormalities similar to those found in the mouse vocalizations. These data show that mutations in the lysosomal enzyme-targeting pathway produce highly specific effects in mouse pup vocalizations and establish the mouse as an attractive model for studying this disorder.
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Affiliation(s)
- Terra D Barnes
- Department of Neuroscience, Washington University School of Medicine in St. Louis, Campus Box 8108, 660 S. Euclid Avenue, St. Louis, MO 63110-1093, USA.
| | - David F Wozniak
- Department of Psychiatry, Campus Box 8134, and the Taylor Family Institute for Innovative Psychiatric Research, Campus Box 8108, Washington University School of Medicine in St. Louis, 660 S. Euclid Avenue, St. Louis, MO 63110-1093, USA
| | - Joanne Gutierrez
- National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tae-Un Han
- National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
| | - Dennis Drayna
- National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD 20892, USA
| | - Timothy E Holy
- Department of Neuroscience, Washington University School of Medicine in St. Louis, Campus Box 8108, 660 S. Euclid Avenue, St. Louis, MO 63110-1093, USA
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Han TU, Lee HS, Kang C, Bae SC. Association of joint erosion with SLC22A4 gene polymorphisms inconsistently associated with rheumatoid arthritis susceptibility. Autoimmunity 2015; 48:313-7. [PMID: 25707686 DOI: 10.3109/08916934.2015.1016219] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Two single-nucleotide polymorphisms (SNPs) in SLC22A4 encoding an organic cation/zwitterion transporter protein, rs2073838 (commonly called slc2F1) and rs3792876 (slc2F2), had been associated with susceptibility to rheumatoid arthritis (RA) in two Japanese and one recent Chinese studies but not in other two Japanese and six Caucasian studies. In this study, the two SNPs were genotyped for 2313 Korean participants and their associations with RA susceptibility and severity were examined. SNP association with RA susceptibility was tested among 1304 RA patients and 1009 healthy controls, and association with joint erosion among 1063 erosive and 241 non-erosive RA patients. Meta-analysis for RA susceptibility association was additionally performed using 10 previous studies and the current one. The two SNPs were almost perfectly correlated with each other (r(2 )= 0.98), and therefore only slc2F1 was tested for association. RA susceptibility association was not found in Koreans (p = 0.93), but still significant in meta-analysis of six Asian studies including this Korean study (p = 0.00036, odds ratio = 1.1) or all 11 studies additionally including five Caucasian studies (p = 0.00021, odds ratio = 1.1). In contrast, an association was found for RA severity in Koreans. The minor allele A was marginally associated with 1.5-fold increased risk of joint erosion among RA patients afflicted for ≤11 years (p = 0.025) or ≤7 years (p = 0.029), though not among patients with longer-standing RA. Accordingly, SLC22A4 was associated with joint erosion in not-very-longstanding RA, although RA susceptibility association was weak and its clinical significance was uncertain.
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Affiliation(s)
- Tae-Un Han
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology , Daejeon , Korea and
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Han TU, Park J, Domingues CF, Moretti-Ferreira D, Paris E, Sainz E, Gutierrez J, Drayna D. A study of the role of the FOXP2 and CNTNAP2 genes in persistent developmental stuttering. Neurobiol Dis 2014; 69:23-31. [PMID: 24807205 DOI: 10.1016/j.nbd.2014.04.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 04/09/2014] [Accepted: 04/27/2014] [Indexed: 11/24/2022] Open
Abstract
A number of speech disorders including stuttering have been shown to have important genetic contributions, as indicated by high heritability estimates from twin and other studies. We studied the potential contribution to stuttering from variants in the FOXP2 gene, which have previously been associated with developmental verbal dyspraxia, and from variants in the CNTNAP2 gene, which have been associated with specific language impairment (SLI). DNA sequence analysis of these two genes in a group of 602 unrelated cases, all with familial persistent developmental stuttering, revealed no excess of potentially deleterious coding sequence variants in the cases compared to a matched group of 487 well characterized neurologically normal controls. This was compared to the distribution of variants in the GNPTAB, GNPTG, and NAGPA genes which have previously been associated with persistent stuttering. Using an expanded subject data set, we again found that NAGPA showed significantly different mutation frequencies in North Americans of European descent (p=0.0091) and a significant difference existed in the mutation frequency of GNPTAB in Brazilians (p=0.00050). No significant differences in mutation frequency in the FOXP2 and CNTNAP2 genes were observed between cases and controls. To examine the pattern of expression of these five genes in the human brain, real time quantitative reverse transcription PCR was performed on RNA purified from 27 different human brain regions. The expression patterns of FOXP2 and CNTNAP2 were generally different from those of GNPTAB, GNPTG and NAPGA in terms of relatively lower expression in the cerebellum. This study provides an improved estimate of the contribution of mutations in GNPTAB, GNPTG and NAGPA to persistent stuttering, and suggests that variants in FOXP2 and CNTNAP2 are not involved in the genesis of familial persistent stuttering. This, together with the different brain expression patterns of GNPTAB, GNPTG, and NAGPA compared to that of FOXP2 and CNTNAP2, suggests that the genetic neuropathological origins of stuttering differ from those of verbal dyspraxia and SLI.
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Affiliation(s)
- Tae-Un Han
- National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - John Park
- National Institute of Neurological Disorders and Stroke, NIH, Bethesda, MD 20892, USA
| | - Carlos F Domingues
- National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA; Department of Genetics, Institute of Bioscience, São Paulo State University (UNESP), Botucatu, São Paulo 18618-000, Brazil
| | - Danilo Moretti-Ferreira
- Department of Genetics, Institute of Bioscience, São Paulo State University (UNESP), Botucatu, São Paulo 18618-000, Brazil
| | - Emily Paris
- National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Eduardo Sainz
- National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Joanne Gutierrez
- National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA
| | - Dennis Drayna
- National Institute on Deafness and Other Communication Disorders, NIH, Bethesda, MD 20892, USA.
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Han TU, Cho SK, Kim T, Joo YB, Bae SC, Kang C. Association of an activity-enhancing variant of IRAK1 and an MECP2-IRAK1 haplotype with increased susceptibility to rheumatoid arthritis. ACTA ACUST UNITED AC 2013; 65:590-8. [DOI: 10.1002/art.37804] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 11/15/2012] [Indexed: 01/21/2023]
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Bang SY, Han TU, Choi CB, Sung YK, Bae SC, Kang C. Peptidyl arginine deiminase type IV (PADI4) haplotypes interact with shared epitope regardless of anti-cyclic citrullinated peptide antibody or erosive joint status in rheumatoid arthritis: a case control study. Arthritis Res Ther 2010; 12:R115. [PMID: 20537173 PMCID: PMC2911908 DOI: 10.1186/ar3051] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2010] [Revised: 05/10/2010] [Accepted: 06/10/2010] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Anti-cyclic citrullinated peptide autoantibodies (anti-CCP) are the most specific serologic marker for rheumatoid arthritis (RA). Genetic polymorphisms in a citrullinating (or deiminating) enzyme, peptidyl arginine deiminase type IV (PADI4) have been reproducibly associated with RA susceptibility in several populations. We investigated whether PADI4 polymorphisms contribute to anti-CCP-negative as well as -positive RA, whether they influence disease severity (erosive joint status), and whether they interact with two major risk factors for RA, Human Leukocyte Antigen-DRB1 (HLA-DRB1) shared epitope (SE) alleles and smoking, depending on anti-CCP and erosive joint status. METHODS All 2,317 unrelated Korean subjects including 1,313 patients with RA and 1,004 unaffected controls were genotyped for three nonsynonymous (padi4_89, padi4_90, and padi4_92) and one synonymous (padi4_104) single-nucleotide polymorphisms (SNPs) in PADI4 and for HLA-DRB1 by direct DNA sequence analysis. Odds ratios (OR) were calculated by multivariate logistic regression. Interaction was evaluated by attributable proportions (AP), with 95% confidence intervals (CI). RESULTS A functional haplotype of the three fully correlated nonsynonymous SNPs in PADI4 was significantly associated with susceptibility to not only anti-CCP-positive (adjusted OR 1.73, 95% CI 1.34 to 2.23) but also -negative RA (adjusted OR 1.75, 95% CI 1.15 to 2.68). A strong association with both non-erosive (adjusted OR 1.62, 95% CI 1.29 to 2.05) and erosive RA (adjusted OR 1.62, 95% CI 1.14 to 2.31) was observed for PADI4 haplotype. Gene-gene interactions between the homozygous RA-risk PADI4 haplotype and SE alleles were significant in both anti-CCP-positive (AP 0.45, 95% CI 0.20 to 0.71) and -negative RA (AP 0.61, 95% CI 0.29 to 0.92). Theses interactions were also observed for both non-erosive (AP 0.48, 95% CI 0.25 to 0.72) and erosive RA (AP 0.46, 95% CI 0.14 to 0.78). In contrast, no interaction was observed between smoking and PADI4 polymorphisms. CONCLUSIONS A haplotype of nonsynonymous SNPs in PADI4 contributes to development of RA regardless of anti-CCP or erosive joint status. The homozygous PADI4 haplotype contribution is affected by gene-gene interactions with HLA-DRB1 SE alleles.
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Affiliation(s)
- So-Young Bang
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, 17 Hangdang-dong Seongdong-gu, Seoul 133-792, South Korea
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Cho SK, Han TU, Kim K, Bang SY, Bae SC, Kang C. CD244 is not associated with susceptibility to rheumatoid arthritis and systemic lupus erythematosus in a Korean population. ACTA ACUST UNITED AC 2009; 60:3153-4. [PMID: 19790054 DOI: 10.1002/art.24850] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Han TU, Bang SY, Kang C, Bae SC. TRAF1polymorphisms associated with rheumatoid arthritis susceptibility in Asians and in Caucasians. ACTA ACUST UNITED AC 2009; 60:2577-84. [DOI: 10.1002/art.24759] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Cha S, Choi CB, Han TU, Kang CP, Kang C, Bae SC. Association of anti-cyclic citrullinated peptide antibody levels with PADI4 haplotypes in early rheumatoid arthritis and with shared epitope alleles in very late rheumatoid arthritis. ACTA ACUST UNITED AC 2007; 56:1454-63. [PMID: 17469103 DOI: 10.1002/art.22570] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Anti-cyclic citrullinated peptide (anti-CCP) antibodies are rheumatoid arthritis (RA)-specific serologic markers. RA susceptibility has been associated with HLA-DRB1 shared epitope (SE) alleles and single-nucleotide polymorphism (SNP) haplotypes in the peptidyl arginine deiminase 4 gene (PADI4). This study was undertaken to determine whether anti-CCP levels are associated with PADI4 haplotypes and/or SE alleles in Korean patients with RA. METHODS Three nonsynonymous SNPs in PADI4 (padi4_89, padi4_90, and padi4_92) and SE alleles were genotyped, and serum anti-CCP levels were measured, in 311 patients with nonerosive or erosive RA. The relationships between anti-CCP levels and PADI4 haplotypes and/or SE alleles were analyzed statistically. RESULTS Anti-CCP levels were significantly higher in patients carrying the PADI4 RA risk haplotype than in patients who did not have the risk haplotype, among anti-CCP-positive patients with RA with a disease duration of <or=34 months (P = 0.041), but not among patients with a longer disease duration or among those who had erosive RA versus nonerosive RA. In contrast, the levels were significantly higher in SE carriers than in noncarriers among patients with RA with a disease duration of >or=141 months (P = 0.0037) and among those who had erosive RA (P = 0.000098), but not among patients who had a shorter disease duration or those who had nonerosive RA. CONCLUSION The PADI4 RA risk haplotype is associated with increased anti-CCP levels in RA patients with disease of short duration, and PADI4 may play a role in early RA. In contrast, SE alleles are associated with increased anti-CCP levels in RA patients with very longstanding disease and in patients with erosive RA, suggesting that SE alleles play a role in very late RA.
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Affiliation(s)
- Seongwon Cha
- Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
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