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Zalesak M, Danisovic L, Harsanyi S. Psoriasis and Psoriatic Arthritis-Associated Genes, Cytokines, and Human Leukocyte Antigens. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:815. [PMID: 38792999 PMCID: PMC11123327 DOI: 10.3390/medicina60050815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/26/2024]
Abstract
In recent years, research has intensified in exploring the genetic basis of psoriasis (PsO) and psoriatic arthritis (PsA). Genome-wide association studies (GWASs), including tools like ImmunoChip, have significantly deepened our understanding of disease mechanisms by pinpointing risk-associated genetic loci. These efforts have elucidated biological pathways involved in PsO pathogenesis, particularly those related to the innate immune system, antigen presentation, and adaptive immune responses. Specific genetic loci, such as TRAF3IP2, REL, and FBXL19, have been identified as having a significant impact on disease development. Interestingly, different genetic variants at the same locus can predispose individuals to either PsO or PsA (e.g., IL23R and deletion of LCE3B and LCE3C), with some variants being uniquely linked to PsA (like HLA B27 on chromosome 6). This article aims to summarize known and new data on the genetics of PsO and PsA, their associated genes, and the involvement of the HLA system and cytokines.
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Affiliation(s)
- Marek Zalesak
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 811 08 Bratislava, Slovakia (L.D.)
| | - Lubos Danisovic
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 811 08 Bratislava, Slovakia (L.D.)
- National Institute of Rheumatic Diseases, Nábrežie Ivana Krasku 4, 921 12 Piestany, Slovakia
| | - Stefan Harsanyi
- Institute of Medical Biology, Genetics and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, Sasinkova 4, 811 08 Bratislava, Slovakia (L.D.)
- National Institute of Rheumatic Diseases, Nábrežie Ivana Krasku 4, 921 12 Piestany, Slovakia
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Gruber C, Lee A, Buta S, Khattri S, Gottlieb AB, Frost JM, Bowcock AM, Ho HE, Bogunovic D. IL4Rα and IL17A Blockade Rescue Autoinflammation in SOCS1 Haploinsufficiency. J Clin Immunol 2023; 44:36. [PMID: 38157076 PMCID: PMC11218038 DOI: 10.1007/s10875-023-01635-z] [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: 08/29/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
By inhibition of JAK-STAT signaling, SOCS1 acts as a master regulator of the cytokine response across numerous tissue types and cytokine pathways. Haploinsufficiency of SOCS1 has recently emerged as a monogenic immunodysregulatory disease with marked clinical variability. Here, we describe a patient with severe dermatitis, recurrent skin infections, and psoriatic arthritis that harbors a novel heterozygous mutation in SOCS1. The variant, c.202_203delAC, generates a frameshift in SOCS1, p.Thr68fsAla*49, which leads to complete loss of protein expression. Unlike WT SOCS1, Thr68fs SOCS1 fails to inhibit JAK-STAT signaling when expressed in vitro. The peripheral immune signature from this patient was marked by a redistribution of monocyte sub-populations and hyper-responsiveness to multiple cytokines. Despite this broad hyper-response across multiple cytokine pathways in SOCS1 haploinsufficiency, the patient's clinical disease was markedly responsive to targeted IL4Rα- and IL17-blocking therapy. In accordance, the mutant allele was unable to regulate IL4Rα signaling. Further, patient cells were unresponsive to IL4/IL13 while on monoclonal antibody therapy. Together, this study reports a novel SOCS1 mutation and suggests that IL4Rα blockade may serve as an unexpected, but fruitful therapeutic target for some patients with SOCS1 haploinsufficiency.
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Affiliation(s)
- Conor Gruber
- Center for Inborn Errors of Immunity, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Angelica Lee
- Center for Inborn Errors of Immunity, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Sofija Buta
- Center for Inborn Errors of Immunity, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Saakshi Khattri
- Department of Dermatology, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Alice B Gottlieb
- Department of Dermatology, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Jacqueline M Frost
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Anne M Bowcock
- Department of Dermatology, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
- Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
- Department of Genetics & Genomics, Icahn School of Medicine at Mount Sinai Hospital, New York, NY, USA
| | - Hsi-En Ho
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Dusan Bogunovic
- Center for Inborn Errors of Immunity, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Ren Y, Wang L, Dai H, Qiu G, Liu J, Yu D, Liu J, Lyu CZ, Liu L, Zheng M. Genome-wide association analysis of anti-TNF-α treatment response in Chinese patients with psoriasis. Front Pharmacol 2022; 13:968935. [PMID: 36059983 PMCID: PMC9437453 DOI: 10.3389/fphar.2022.968935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 07/28/2022] [Indexed: 11/22/2022] Open
Abstract
Background: TNF-α inhibitors are effective biological agents for treating psoriasis, but the treatment responses differ across patients. This study aimed to identify genetic biomarkers of anti-TNF-α response in Chinese psoriasis patients using a genome-wide association approach. Methods: We recruited two independent cohorts of Chinese psoriasis patients administered etanercept biosimilar (with or without methotrexate). We identified 61 and 87 good responders (PASI improvement ≥75%), 19 and 10 poor responders (PASI improvement <50%) after 24 weeks treatment in the two cohorts, respectively. Then we performed genome-wide association studies (GWAS) on anti-TNF-α response in each cohort independently, followed by a fixed-effects inverse-variance meta-analysis in the 148 good and 29 poor responders. Results: We tested genetic associations with >3 million genetic variants in either cohort. Meta-analysis identified significant associations within seven loci at p < 10−5, which also showed consistent association evidence in the two cohorts. These seven loci include rs2431355 (OR = 6.65, p = 4.46 × 10−7, IQGAP2-F2RL2 on 5q13.3), rs11801616 (OR = 0.11, p = 1.75 × 10−6, SDC3 on 1p35.2), rs3754679 (OR = 0.17, p = 7.71 × 10−6, CNOT11 on 2q11.2), rs13166823 (OR = 0.09, p = 3.71 × 10−6, IRF1-AS1 on 5q31.1), rs10220768 (OR = 5.49, p = 1.48 × 10−6, NPAP1 on 15q11.2), rs4796752 (OR = 5.56, p = 1.49 × 10−6, KRT31 on 17q21.2), and rs13045590 (OR = 0.08, p = 9.67 × 10−7, CTSZ on 20q13.3). Of the seven SNPs, six SNPs showed significant eQTL effect (p < 1 × 10−6) for several genes in multiple tissues. Conclusion: These results suggest novel biological mechanisms and potential biomarkers for the response to anti-TNF therapies. These findings warrant further validation.
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Affiliation(s)
- Yunqing Ren
- Department of Dermatology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Ling Wang
- Genome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore
| | - Huatuo Dai
- Department of Dermatology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Guiying Qiu
- Department of Dermatology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jipeng Liu
- Department of Dermatology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
| | - Dianhe Yu
- Department of Dermatology, The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang, China
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jianjun Liu
- Genome Institute of Singapore, Agency for Science, Technology and Research, Singapore, Singapore
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Cheng-Zhi Lyu
- Department of Dermatology, Dalian Dermatosis Hospital, Dalian, China
| | - Lunfei Liu
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Department of Dermatology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang, China
- *Correspondence: Lunfei Liu, ; Min Zheng,
| | - Min Zheng
- Department of Dermatology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- *Correspondence: Lunfei Liu, ; Min Zheng,
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Kocaaga A, Kocaaga M. Psoriasis: An Immunogenetic Perspective. Glob Med Genet 2022; 9:82-89. [PMID: 35707771 PMCID: PMC9192173 DOI: 10.1055/s-0042-1743259] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/29/2021] [Indexed: 11/09/2022] Open
Abstract
Psoriasis is an erythematous-squamous dermatosis with a polygenic inheritance history. Both environmental and genetic factors play a role in the etiology of the disease. Over the past two decades, numerous linkage analyzes and genome-wide association studies have been conducted to investigate the role of genetic variation in disease pathogenesis and progression. To date, >70 psoriasis susceptibility loci have been identified, including HLA-Cw6, IL12B, IL23R, and LCE3B/3C. Some genetic markers are used in clinical diagnosis, prognosis, treatment, and personalized new drug development that can further explain the pathogenesis of psoriasis. This review summarizes the immunological mechanisms involved in the etiopathogenesis of psoriasis and recent advances in susceptibility genes and highlights new potential targets for therapeutic intervention.
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Affiliation(s)
- Ayca Kocaaga
- Department of Medical Genetics, Eskişehir City Hospital, Eskisehir, Turkey
| | - Mustafa Kocaaga
- Department of Medical Microbiology, Yunus Emre State Hospital, Eskisehir, Turkey
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Bridgewood C, Newton D, Bragazzi N, Wittmann M, McGonagle D. Unexpected connections of the IL-23/IL-17 and IL-4/IL-13 cytokine axes in inflammatory arthritis and enthesitis. Semin Immunol 2021; 58:101520. [PMID: 34799224 DOI: 10.1016/j.smim.2021.101520] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 11/03/2021] [Indexed: 12/14/2022]
Abstract
The IL-23/IL-17 cytokine axis is related to spondyloarthropathy (SpA) pattern diseases that target the skin, eye, gut and joints. These share overlapping target tissues with Th2 type or allergic diseases, including the skin, eye and gut but SpA diseases exhibit distinct microanatomical topography, molecular characteristics, and clinical features including uveitis, psoriasis, apical pulmonary involvement, lower gastrointestinal involvement with colitis, and related arthritides including psoriatic arthritis and ankylosing spondylitis. Inflammatory arthritis is conspicuously absent from the Th2 diseases which are characterised IL-4/IL-13 dependent pathway activation including allergic rhino-conjunctivitis, atopic eczema, allergic asthma and food allergies. This traditional understanding of non-overlap of musculoskeletal territory between that atopic diseases and the IL-17 -mediated SpA diseases is undergoing a critical reappraisal with the recent demonstration of IL-4/IL-13 blockade, may be associated with the development of SpA pattern arthritis, psoriasiform skin disease and occasional anterior uveitis. Given the known plasticity within Th paradigm pathways, these findings suggest dynamic Th2 cytokine and Th17 cytokine counter regulation in vivo in humans. Unexpected, this is the case in peripheral enthesis and when the IL-4/13 immunological brake on IL-23/17 cytokines is removed, a SpA phenotype may emerge. We discuss hitherto unexpected observations in SpA, showing counter regulation between the Th17 and Th2 pathways at sites including the entheses that collectively indicate that the emergent reverse translational therapeutic data is more than coincidental and offers new insights into the "Th paradigms" in atopy and SpA.
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Affiliation(s)
- Charlie Bridgewood
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK.
| | - Darren Newton
- Division of Haematology and Immunology, Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, UK
| | - Nicola Bragazzi
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK
| | - Miriam Wittmann
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK; National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), Leeds Teaching Hospitals, Leeds, UK
| | - Dennis McGonagle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK; National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), Leeds Teaching Hospitals, Leeds, UK
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Mazrier H, Vogelnest LJ, Taylor RM, Williamson P. Altered plasma cytokines in dogs with atopic dermatitis. Vet Dermatol 2021; 33:131-e38. [PMID: 34817106 PMCID: PMC9299684 DOI: 10.1111/vde.13044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 08/06/2021] [Accepted: 09/01/2021] [Indexed: 01/28/2023]
Abstract
BACKGROUND Canine (Canis lupus familiaris) atopic dermatitis (AD) shares similar clinical signs to human AD. The abnormal immune response of AD is orchestrated by T lymphocytes, and may include variable involvement of cytokines, regulatory T (Treg) cells, eosinophils, mast cells and other immune components. Helper T (Th)2 cytokines often predominate initially, followed by Th1 cytokines in more chronic phases. HYPOTHESIS/OBJECTIVES Pro-inflammatory and Treg cytokines have been shown to play a role in human AD, yet their importance is not clear in canine AD. Hence, this study aimed to measure the concentrations of cytokines/chemokines not traditionally associated with Th1/Th2 response. ANIMALS Canine AD patients (n = 27), compared to control dogs (n = 11). METHODS AND MATERIALS A total of 19 plasma cytokines were assayed using canine specific multiplex immuno-assays. RESULTS The plasma concentrations of CXC Motif Chemokine Ligand 8 (CXCL8), interleukin (IL)-7 and IL-15 cytokines were elevated in canine AD patients, compared to control dogs. In addition, stem-cell factor (SCF) concentrations were reduced in the plasma of canine AD patients compared to control dogs. Distinct cytokine profiles were found in dogs belonging to the Staffordshire breeds, a group with increased risk of AD. In particular, granulocyte-macrophage colony-stimulating factor (GM-CSF) had significantly elevated concentrations. CONCLUSIONS AND CLINICAL RELEVANCE Some of the plasma cytokine alterations in canine AD described here, particularly of IL-7, have not been reported previously. Monitoring these distinctive cytokine alterations could be useful for diagnosis and monitoring of canine AD in dogs.
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Affiliation(s)
- Hamutal Mazrier
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW, 2006, Australia
| | - Linda J Vogelnest
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW, 2006, Australia
| | - Rosanne M Taylor
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW, 2006, Australia
| | - Peter Williamson
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW, 2006, Australia.,School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, NSW, 2006, Australia
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Verbenko DA, Karamova AE, Artamonova OG, Deryabin DG, Rakitko A, Chernitsov A, Krasnenko A, Elmuratov A, Solomka VS, Kubanov AA. Apremilast Pharmacogenomics in Russian Patients with Moderate-to-Severe and Severe Psoriasis. J Pers Med 2020; 11:jpm11010020. [PMID: 33383665 PMCID: PMC7823747 DOI: 10.3390/jpm11010020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 12/18/2020] [Accepted: 12/25/2020] [Indexed: 12/14/2022] Open
Abstract
One of the target drugs for plaque psoriasis treatment is apremilast, which is a selective phosphodiesterase 4 (PDE4) inhibitor. In this study, 34 moderate-to-severe and severe plaque psoriasis patients from Russia were treated with apremilast for 26 weeks. This allowed us to observe the effectiveness of splitting patient cohorts based on clinical outcomes, which were assessed using the Psoriasis Area Severity Index (PASI). In total, 14 patients (41%) indicated having an advanced outcome with delta PASI 75 after treatment; 20 patients indicated having moderate or no effects. Genome variability was investigated using the Illumina Infinium Global Screening Array. Genome-wide analysis revealed apremilast therapy clinical outcome associations at three compact genome regions with undefined functions situated on chromosomes 2, 4, and 5, as well as on a single single-nucleotide polymorphism (SNP) on chromosome 23. Pre-selected SNP sets were associated with psoriasis vulgaris analysis, which was used to identify four SNP-associated targeted therapy efficiencies: IL1β (rs1143633), IL4 (IL13) (rs20541), IL23R (rs2201841), and TNFα (rs1800629) genes. Moreover, we showed that the use of the global polygenic risk score allowed for the prediction of onset psoriasis in Russians. Therefore, these results can serve as a starting point for creating a predictive model of apremilast therapy response in the targeted therapy of patients with psoriasis vulgaris.
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Affiliation(s)
- Dmitry A. Verbenko
- State Research Center of Dermatovenereology and Cosmetology, Korolenko St., 3, bldg 6, 107076 Moscow, Russia; (A.E.K.); (O.G.A.); (D.G.D.); (V.S.S.); (A.A.K.)
- Correspondence:
| | - Arfenya E. Karamova
- State Research Center of Dermatovenereology and Cosmetology, Korolenko St., 3, bldg 6, 107076 Moscow, Russia; (A.E.K.); (O.G.A.); (D.G.D.); (V.S.S.); (A.A.K.)
| | - Olga G. Artamonova
- State Research Center of Dermatovenereology and Cosmetology, Korolenko St., 3, bldg 6, 107076 Moscow, Russia; (A.E.K.); (O.G.A.); (D.G.D.); (V.S.S.); (A.A.K.)
| | - Dmitry G. Deryabin
- State Research Center of Dermatovenereology and Cosmetology, Korolenko St., 3, bldg 6, 107076 Moscow, Russia; (A.E.K.); (O.G.A.); (D.G.D.); (V.S.S.); (A.A.K.)
| | - Alexander Rakitko
- Genotek Ltd., Nastavnicheskiipereulok 17/1, 105120 Moscow, Russia; (A.R.); (A.C.); (A.K.); (A.E.)
| | - Alexandr Chernitsov
- Genotek Ltd., Nastavnicheskiipereulok 17/1, 105120 Moscow, Russia; (A.R.); (A.C.); (A.K.); (A.E.)
| | - Anna Krasnenko
- Genotek Ltd., Nastavnicheskiipereulok 17/1, 105120 Moscow, Russia; (A.R.); (A.C.); (A.K.); (A.E.)
| | - Artem Elmuratov
- Genotek Ltd., Nastavnicheskiipereulok 17/1, 105120 Moscow, Russia; (A.R.); (A.C.); (A.K.); (A.E.)
| | - Victoria S. Solomka
- State Research Center of Dermatovenereology and Cosmetology, Korolenko St., 3, bldg 6, 107076 Moscow, Russia; (A.E.K.); (O.G.A.); (D.G.D.); (V.S.S.); (A.A.K.)
| | - Alexey A. Kubanov
- State Research Center of Dermatovenereology and Cosmetology, Korolenko St., 3, bldg 6, 107076 Moscow, Russia; (A.E.K.); (O.G.A.); (D.G.D.); (V.S.S.); (A.A.K.)
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Genetic polymorphism in psoriasis and its meaning for the treatment efficacy in the future. Postepy Dermatol Alergol 2018; 35:331-337. [PMID: 30206443 PMCID: PMC6130130 DOI: 10.5114/ada.2018.77661] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/16/2017] [Indexed: 12/24/2022] Open
Abstract
The concept of personalized medicine is a new individualized approach which helps application of the targeted therapy. In fact, tailored medicine is mostly present in the field of life-threatening diseases such as oncology. However, skin diseases as such might be regarded as a potential area of implementation of this approach in the future. Stratified medicine in polygenetic and heterogeneous diseases, such as psoriasis, is more complex. Rapid development of science and novel molecular techniques led to better understanding of molecular pathogenetic pathways of many diseases including psoriasis. Identification of the particular immunopathogenetic pathways led to further development of targeted therapies such as biologic drugs. Actually the goal of individualized therapy is to determine the identical homogenous subgroups of patients, according to a biomarker, in which the response to that therapy will be the best and will carry the lowest risk of side effects. This review attempts to analyze the associations between polymorphisms of certain genes and the increased risk of developing psoriasis or psoriatic arthritis. The review of literature has also included the studies investigating the associations between gene polymorphisms and response to biologic therapy in psoriasis and psoriatic arthritis patients.
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Wang R, Lu YL, Huang HT, Qin HM, Lan Y, Wang JL, Wang CF, Wei YS. Association of interleukin 13 gene polymorphisms and plasma IL 13 level with risk of systemic lupus erythematosus. Cytokine 2018; 104:92-97. [DOI: 10.1016/j.cyto.2017.09.034] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 09/26/2017] [Accepted: 09/28/2017] [Indexed: 02/08/2023]
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10
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Xu X, Zhang HY. The Immunogenetics of Psoriasis and Implications for Drug Repositioning. Int J Mol Sci 2017; 18:ijms18122650. [PMID: 29292715 PMCID: PMC5751252 DOI: 10.3390/ijms18122650] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/22/2017] [Accepted: 12/04/2017] [Indexed: 12/21/2022] Open
Abstract
Psoriasis is a genetically-regulated, T lymphocyte-mediated autoimmune skin disease that causes systemic damage, seriously affecting patient quality of life and survival. Psoriasis treatments, which aim to control the disease’s development, are greatly limited because its etiology and pathogenesis have not yet been fully elucidated. A large number of studies have demonstrated that immunogenetic elements are the most important factors responsible for psoriasis susceptibility. This paper delineates the immunogenetic mechanisms of psoriasis and provides useful information with regards to performing drug repositioning for the treatment of psoriasis.
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Affiliation(s)
- Xuan Xu
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China.
| | - Hong-Yu Zhang
- Hubei Key Laboratory of Agricultural Bioinformatics, College of Informatics, Huazhong Agricultural University, Wuhan 430070, China.
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Talamonti M, D’Adamio S, Bianchi L, Galluzzo M. The Role of Pharmacogenetics in Chronic Plaque Psoriasis: Update of the Literature. Mol Diagn Ther 2017; 21:467-480. [DOI: 10.1007/s40291-017-0274-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Prieto-Pérez R, Llamas-Velasco M, Cabaleiro T, Solano-López G, Márquez B, Román M, Ochoa D, Talegón M, Daudén E, Abad-Santos F. Pharmacogenetics of ustekinumab in patients with moderate-to-severe plaque psoriasis. Pharmacogenomics 2017; 18:157-164. [DOI: 10.2217/pgs-2016-0122] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Aim/Materials & methods: Few studies have evaluated the influence of pharmacogenetics in psoriatic patients treated with ustekinumab. We evaluated 121 polymorphisms to study a possible association between these SNPs and the response to ustekinumab (PASI75 at 4 months; n = 69). Results/Conclusion: The adjusted results (false discovery rate) showed an association between five SNPs in TNFRSF1A, HTR2A, NFKBIA, ADAM33 and IL13 genes, and poor response to ustekinumab. Furthermore, six SNPs in CHUK, C17orf51, ZNF816A, STAT4, SLC22A4 and Corf72 genes were associated with better response to ustekinumab. However, there was no significant association between response to ustekinumab and SNPs in HLA-C as it has been recently described. Finally, a higher weight was obtained in nonresponders than responders (p = 0.018). Further studies would be necessary to be closer to personalized medicine.
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Affiliation(s)
- Rocío Prieto-Pérez
- Clinical Pharmacology Service, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - Mar Llamas-Velasco
- Dermatology Service, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - Teresa Cabaleiro
- Clinical Pharmacology Service, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
| | - Guillermo Solano-López
- Dermatology Service, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - Beatriz Márquez
- Clinical Biochemistry Service, Hospital Universitario Gregorio Marañón, Madrid, Spain
| | - Manuel Román
- Clinical Pharmacology Service, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - Dolores Ochoa
- Clinical Pharmacology Service, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - María Talegón
- Clinical Pharmacology Service, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - Esteban Daudén
- Dermatology Service, Hospital Universitario de la Princesa, Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
| | - Francisco Abad-Santos
- Clinical Pharmacology Service, Hospital Universitario de la Princesa, Instituto Teófilo Hernando, Universidad Autónoma de Madrid (UAM), Instituto de Investigación Sanitaria la Princesa (IP), Madrid, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Salud Carlos III, Madrid, Spain
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Polymorphisms Associated with Age at Onset in Patients with Moderate-to-Severe Plaque Psoriasis. J Immunol Res 2015; 2015:101879. [PMID: 26613086 PMCID: PMC4647058 DOI: 10.1155/2015/101879] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 09/15/2015] [Indexed: 11/17/2022] Open
Abstract
Psoriasis is a chronic skin disease in which genetics play a major role. Although many genome-wide association studies have been performed in psoriasis, knowledge of the age at onset remains limited. Therefore, we analyzed 173 single-nucleotide polymorphisms in genes associated with psoriasis and other autoimmune diseases in patients with moderate-to-severe plaque psoriasis type I (early-onset, <40 years) or type II (late-onset, ≥40 years) and healthy controls. Moreover, we performed a comparison between patients with type I psoriasis and patients with type II psoriasis. Our comparison of a stratified population with type I psoriasis (n = 155) and healthy controls (N = 197) is the first to reveal a relationship between the CLMN, FBXL19, CCL4L, C17orf51, TYK2, IL13, SLC22A4, CDKAL1, and HLA-B/MICA genes. When we compared type I psoriasis with type II psoriasis (N = 36), we found a significant association between age at onset and the genes PSORS6, TNF-α, FCGR2A, TNFR1, CD226, HLA-C, TNFAIP3, and CCHCR1. Moreover, we replicated the association between rs12191877 (HLA-C) and type I psoriasis and between type I and type II psoriasis. Our findings highlight the role of genetics in age of onset of psoriasis.
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Budu-Aggrey A, Bowes J, Barton A. Identifying a novel locus for psoriatic arthritis. Rheumatology (Oxford) 2015; 55:25-32. [PMID: 26255310 PMCID: PMC4676906 DOI: 10.1093/rheumatology/kev273] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Indexed: 12/26/2022] Open
Abstract
A number of studies have identified genetic risk loci for PsA, the majority of which also confer risk for psoriasis. The stronger heritability of PsA in comparison with psoriasis suggests that there should be risk loci that are specific for PsA. Identifying such loci could potentially inform therapy development to provide more effective treatments for PsA patients, especially with a considerable proportion being non-responsive to current therapies. Evidence of a PsA-specific locus has been previously found at HLA-B27 within the MHC region. A recent study has provided evidence of non-HLA risk loci that are specific for PsA at IL23R, PTPN22 and on chromosome 5q31. Functional characterization of these loci will provide further understanding of the pathways underlying PsA, and enable us to apply genetic findings for patient benefit.
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Affiliation(s)
- Ashley Budu-Aggrey
- Arthritis Research UK Centre for Genetics and Genomics, The University of Manchester, NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust and University of Manchester, Manchester Academy of Health Sciences and
| | - John Bowes
- Arthritis Research UK Centre for Genetics and Genomics, The University of Manchester
| | - Anne Barton
- Arthritis Research UK Centre for Genetics and Genomics, The University of Manchester, NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust and University of Manchester, Manchester Academy of Health Sciences and The Kellgren Centre for Rheumatology, Central Manchester Foundation Trust, NIHR Manchester Biomedical Research Centre, Manchester, UK
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15
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Abstract
Psoriasis vulgaris is a common, chronic inflammatory skin disease with a complex etiology involving genetic risk factors and environmental triggers. Here we describe the many known genetic predispositions of psoriasis with respect to immune genes and their encoded pathways in psoriasis susceptibility. These genes span an array of functions that involve antigen presentation (HLA-Cw6, ERAP1, ERAP2, MICA), the IL-23 axis (IL12Bp40, IL23Ap19, IL23R, JAK2, TYK2), T-cell development and T-cells polarization (RUNX1, RUNX3, STAT3, TAGAP, IL4, IL13), innate immunity (CARD14, c-REL, TRAF3IP2, DDX58, IFIH1), and negative regulators of immune responses (TNIP1, TNFAIP3, NFKBIA, ZC3H12C, IL36RN, SOCS1). The contribution of some of these gene products to psoriatic disease has also been revealed in recent years through targeting of key immune components, such as the Th17/IL-23 axis which has been highly successful in disease treatment. However, many of the genetic findings involve immune genes with less clear roles in psoriasis pathogenesis. This is particularly the case for those genes involved in innate immunity and negative regulation of immune specific pathways. It is possible that risk alleles of these genes decrease the threshold for the initial activation of the innate immune response. This could then lead to the onslaught of the pathogenic adaptive immune response known to be active in psoriatic skin. However, precisely how these various genes affect immunobiology need to be determined and some are speculated upon in this review. These novel genetic findings also open opportunities to explore novel therapeutic targets and potentially the development of personalized medicine, as well as discover new biology of human skin disease.
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Affiliation(s)
- Jamie L Harden
- The Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY 10065, USA; Dermira, Inc. Menlo Park, CA 94025, USA
| | - James G Krueger
- The Laboratory for Investigative Dermatology, The Rockefeller University, New York, NY 10065, USA
| | - Anne M Bowcock
- National Heart and Lung Institute, Imperial College, London SW3 6LY, UK.
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16
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Kang Z, Li Q, Fu P, Yan S, Guan M, Xu J, Xu F. Correlation of KIF3A and OVOL1, but not ACTL9, with atopic dermatitis in Chinese pediatric patients. Gene 2015; 571:249-51. [PMID: 26127003 DOI: 10.1016/j.gene.2015.06.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 04/17/2015] [Accepted: 06/25/2015] [Indexed: 10/23/2022]
Abstract
Atopic dermatitis (AD) is the most common chronic inflammatory skin disease in Chinese pediatric patients. To date, the genetic susceptibility to AD in this population has not been fully clarified. Three single nucleotide polymorphisms have previously been associated with AD in Europeans, rs2897442 (KIF3A), rs479844 (OVOL1) and rs2164983 (ACTL9). To verify the correlation between AD and these three SNPs in the Chinese pediatric population, we conducted a case-control study including 235 pediatric patients with AD and 200 health controls. We confirmed the correlation between rs2897442 and rs479844 and AD in this population at both the genotype and allele levels. Statistical analysis showed that the C allele of rs2897442 is associated with an increased risk of developing AD, while the A allele of rs479844 is associated with a reduced risk. No correlation between rs2164983 and AD was identified. Our study indicates that KIF3A and OVOL1 are involved in the development of AD in the Chinese pediatric population.
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Affiliation(s)
- Zhihua Kang
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China
| | - Qiao Li
- Department of Dermatology, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China
| | - Pan Fu
- Department of Microbiology, Children's Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China
| | - Shuxian Yan
- Department of Dermatology, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China
| | - Ming Guan
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China; Central Laboratory, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China
| | - Jinhua Xu
- Department of Dermatology, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China.
| | - Feng Xu
- Department of Dermatology, Huashan Hospital, Shanghai Medical School, Fudan University, Shanghai 200040, PR China.
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Discovery in genetic skin disease: the impact of high throughput genetic technologies. Genes (Basel) 2014; 5:615-34. [PMID: 25093584 PMCID: PMC4198921 DOI: 10.3390/genes5030615] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 07/07/2014] [Accepted: 07/14/2014] [Indexed: 11/21/2022] Open
Abstract
The last decade has seen considerable advances in our understanding of the genetic basis of skin disease, as a consequence of high throughput sequencing technologies including next generation sequencing and whole exome sequencing. We have now determined the genes underlying several monogenic diseases, such as harlequin ichthyosis, Olmsted syndrome, and exfoliative ichthyosis, which have provided unique insights into the structure and function of the skin. In addition, through genome wide association studies we now have an understanding of how low penetrance variants contribute to inflammatory skin diseases such as psoriasis vulgaris and atopic dermatitis, and how they contribute to underlying pathophysiological disease processes. In this review we discuss strategies used to unravel the genes underlying both monogenic and complex trait skin diseases in the last 10 years and the implications on mechanistic studies, diagnostics, and therapeutics.
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Girolomoni G, Griffiths CEM, Krueger J, Nestle FO, Nicolas JF, Prinz JC, Puig L, Ståhle M, van de Kerkhof PCM, Allez M, Emery P, Paul C. Early intervention in psoriasis and immune-mediated inflammatory diseases: A hypothesis paper. J DERMATOL TREAT 2014; 26:103-12. [DOI: 10.3109/09546634.2014.880396] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Abstract
Previous genetic epidemiological studies of psoriasis and alopecia areata demonstrated strong heritability in first-degree relatives and in twins. In recent years, these two conditions have emerged as two skin diseases that are starting to yield their secrets through genome-wide association studies. Both diseases manifest prominent human leukocyte antigen (HLA) associations, psoriasis primarily with major histocompatibility complex (MHC) Class 1, specifically HLA-Cw6, and alopecia areata primarily with MHC Class II. Despite these differences in HLA associations, both diseases have in common a prominent role for CD8+ lymphocytes. The purpose of this brief review is to present the recent developments in the genetics of psoriasis.
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Affiliation(s)
- James T Elder
- Department of Dermatology, University of Michigan Medical School and Ann Arbor VA Hospital, Ann Arbor, Michigan, USA
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20
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Feng YY, Sun LD, Zhang C, Zuo XB, Kang XJ, Wu WD, Zhang DZ, Wu XJ, Zhang XJ, Pu XM. Genetic variants of the genes encoding zinc finger protein 313 and interleukin-13 confer a risk for psoriasis in a Chinese Uygur population. Clin Exp Dermatol 2013; 38:768-74. [PMID: 23617596 DOI: 10.1111/ced.12049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2012] [Indexed: 11/29/2022]
Abstract
BACKGROUND Recent work using genome–wide association studies (GWAS) in Chinese Han and white populations have discovered several novel psoriasis susceptibility genes. AIM To examine whether the risk loci for psoriasis identified in previous GWAS in a white population are also associated with psoriasis in a Chinese Uygur population in Xinjiang. METHODS Genotyping analysis of eight single-nucleotide polymorphisms (SNPs) associated with psoriasis was performed for 539 patients with psoriasis and 749 controls, all of Chinese Uygur descent, using a commercial assay. RESULTS Two SNPs had an association with psoriasis in this Chinese Uygur population: SNP rs495337 in the gene encoding for zinc finger protein 313 (P < 0.001; OR = 0.80) and SNP rs20541 of the gene encoding for interleukin-13 (P < 0.001; OR = 0.82). In subgroup analyses, the two SNPs were significantly associated (P < 0.05) with type I psoriasis, Rs495337 showed statistically difference between positive family history of psoriasis patients and controls whereas rs20541 might preferentially associated with negative family history psoriasis patients. Interestingly, using multifactor dimensionality reduction, a significant two-locus interaction was seen between rs495337 and rs20541, with a crossvalidation consistency of 4/5 and average balanced prediction (accuracy 55.5%, P < 0.001). CONCLUSIONS ZNF313 and IL-13 are associated with risk for psoriasis in a Chinese Uygur population, and there is an effect of interaction between the two genes on this risk.
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21
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Alfaro E, Dhruva A, Langford DJ, Koetters T, Merriman JD, West C, Dunn LB, Paul SM, Cooper B, Cataldo J, Hamolsky D, Elboim C, Kober K, Aouizerat BE, Miaskowski C. Associations between cytokine gene variations and self-reported sleep disturbance in women following breast cancer surgery. Eur J Oncol Nurs 2013; 18:85-93. [PMID: 24012192 PMCID: PMC3946647 DOI: 10.1016/j.ejon.2013.08.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 07/27/2013] [Accepted: 08/04/2013] [Indexed: 11/19/2022]
Abstract
PURPOSE OF THE RESEARCH To attempt to replicate the associations found in our previous study of patients and family caregivers between interleukin 6 (IL6) and nuclear factor kappa beta 2 (NFKB2) and sleep disturbance and to identify additional genetic associations in a larger sample of patients with breast cancer. METHODS AND SAMPLE Patients with breast cancer (n = 398) were recruited prior to surgery and followed for six months. Patients completed a self-report measure of sleep disturbance and provided a blood sample for genomic analyses. Growth mixture modeling was used to identify distinct latent classes of patients with higher and lower levels of sleep disturbance. KEY RESULTS Patients who were younger and who had higher comorbidity and lower functional status were more likely to be in the high sustained sleep disturbance class. Variations in three cytokine genes (i.e., IL1 receptor 2 (IL1R2), IL13, NFKB2) predicted latent class membership. CONCLUSIONS Polymorphisms in cytokine genes may partially explain inter-individual variability in sleep disturbance. Determination of high risk phenotypes and associated molecular markers may allow for earlier identification of patients at higher risk for developing sleep disturbance and lead to the development of more targeted clinical interventions.
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Affiliation(s)
- Emely Alfaro
- School of Nursing, University of California, San Francisco, CA, USA
| | - Anand Dhruva
- School of Medicine, University of California, San Francisco, CA, USA
| | - Dale J Langford
- School of Nursing, University of California, San Francisco, CA, USA
| | - Theresa Koetters
- School of Nursing, University of California, San Francisco, CA, USA
| | - John D Merriman
- School of Nursing, University of California, San Francisco, CA, USA
| | - Claudia West
- School of Nursing, University of California, San Francisco, CA, USA
| | - Laura B Dunn
- School of Medicine, University of California, San Francisco, CA, USA
| | - Steven M Paul
- School of Nursing, University of California, San Francisco, CA, USA
| | - Bruce Cooper
- School of Nursing, University of California, San Francisco, CA, USA
| | - Janine Cataldo
- School of Nursing, University of California, San Francisco, CA, USA
| | - Deborah Hamolsky
- School of Nursing, University of California, San Francisco, CA, USA
| | | | - Kord Kober
- School of Nursing, University of California, San Francisco, CA, USA
| | - Bradley E Aouizerat
- School of Nursing, University of California, San Francisco, CA, USA; Institute for Human Genetics, University of California, San Francisco, CA, USA
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22
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Genetics of psoriasis and pharmacogenetics of biological drugs. Autoimmune Dis 2013; 2013:613086. [PMID: 24069534 PMCID: PMC3771250 DOI: 10.1155/2013/613086] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Accepted: 07/19/2013] [Indexed: 11/17/2022] Open
Abstract
Psoriasis is a chronic inflammatory disease of the skin. The causes of psoriasis are unknown, although family and twin studies have shown genetic factors to play a key role in its development. The many genes associated with psoriasis and the immune response include TNFα, IL23, and IL12. Advances in knowledge of the pathogenesis of psoriasis have enabled the development of new drugs that target cytokines (e.g., etanercept, adalimumab, and infliximab, which target TNFα, and ustekinumab, which targets the p40 subunit of IL23 and IL12). These drugs have improved the safety and efficacy of treatment in comparison with previous therapies. However, not all patients respond equally to treatment, possibly owing to interindividual genetic variability. In this review, we describe the genes associated with psoriasis and the immune response, the biological drugs used to treat chronic severe plaque psoriasis, new drugs in phase II and III trials, and current knowledge on the implications of pharmacogenomics in predicting response to these treatments.
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23
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Abstract
We present a comprehensive toolkit for post-processing, visualization and advanced analysis of GWAS results. In the spirit of comparable tools for gene-expression analysis, we attempt to unify and simplify several procedures that are essential for the interpretation of GWAS results. This includes the generation of advanced Manhattan and regional association plots including rare variant display as well as novel interaction network analysis tools for the investigation of systems-biology aspects. Our package supports virtually all model organisms and represents the first cohesive implementation of such tools for the popular language R. Previous software of that range is dispersed over a wide range of platforms and mostly not adaptable for custom work pipelines. We demonstrate the utility of this package by providing an example workflow on a publicly available dataset.
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Correlations between psoriasis and inflammatory bowel diseases. BIOMED RESEARCH INTERNATIONAL 2013; 2013:983902. [PMID: 23971052 PMCID: PMC3736484 DOI: 10.1155/2013/983902] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 06/27/2013] [Indexed: 01/21/2023]
Abstract
For a long time the relationship between inflammatory bowel diseases (IBDs) and psoriasis has been investigated by epidemiological studies. It is only starting from the 1990s that genetic and immunological aspects have been focused on. Psoriasis and IBD are strictly related inflammatory diseases. Skin and bowel represent, at the same time, barrier and connection between the inner and the outer sides of the body. The most important genetic correlations involve the chromosomal loci 6p22, 16q, 1p31, and 5q33 which map several genes involved in innate and adaptive immunity. The genetic background represents the substrate to the common immune processes involved in psoriasis and IBD. In the past, psoriasis and IBD were considered Th1-related disorders. Nowadays the role of new T cells populations has been highlighted. A key role is played by Th17 and T-regs cells as by the balance between these two cells types. New cytokines and T cells populations, as IL-17A, IL-22, and Th22 cells, could play an important pathogenetic role in psoriasis and IBD. The therapeutic overlaps further support the hypothesis of a common pathogenesis.
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25
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Prieto-Pérez R, Cabaleiro T, Daudén E, Abad-Santos F. Gene polymorphisms that can predict response to anti-TNF therapy in patients with psoriasis and related autoimmune diseases. THE PHARMACOGENOMICS JOURNAL 2013; 13:297-305. [DOI: 10.1038/tpj.2012.53] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 10/24/2012] [Accepted: 11/16/2012] [Indexed: 02/08/2023]
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26
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Jabbari A, Petukhova L, Cabral RM, Clynes R, Christiano AM. Genetic basis of alopecia areata: a roadmap for translational research. Dermatol Clin 2012; 31:109-17. [PMID: 23159180 DOI: 10.1016/j.det.2012.08.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alopecia areata (AA) is a recurrent autoimmune type of hair loss that affects about 5.3 million people in the United States alone. Despite being the most prevalent autoimmune disease, the molecular and cellular mechanisms underlying this complex disease are still poorly understood, and rational treatments are lacking. Further efforts are necessary to clearly pinpoint the causes and molecular pathways leading to this disease and to find evidence-based treatments for AA. The authors focus on the central role of genetics for gaining insight into disease pathogenesis and setting the stage for the rational development of novel effective therapeutic approaches.
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Affiliation(s)
- Ali Jabbari
- Department of Dermatology, Russ Berrie Medical Science Pavilion, Columbia University, 1150 Saint Nicholas Avenue, New York, NY 10032, USA
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27
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Bergboer JG, Zeeuwen PL, Schalkwijk J. Genetics of Psoriasis: Evidence for Epistatic Interaction between Skin Barrier Abnormalities and Immune Deviation. J Invest Dermatol 2012; 132:2320-2331. [DOI: 10.1038/jid.2012.167] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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28
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Abstract
Anti-TNF antibodies have acquired a prominent place in the management of IBD (including Crohn's disease and ulcerative colitis), rheumatologic conditions (such as rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis) and psoriasis. They have a good safety profile, especially when contraindications such as demyelinating disease, active infections and/or abscesses are ruled out, and when necessary precautions to prevent reactivation of tuberculosis are taken. However, with increasing use of these agents, paradoxical adverse events have been reported. Some of these features are shared with the underlying disease for which these drugs are given, making management of these conditions challenging. For example, anti-TNF therapy is used for the treatment of psoriasis, but psoriasiform lesions are sometimes observed in patients receiving therapy. Similarly, anti-TNF therapy is used for the treatment of rheumatologic diseases, but arthralgias and arthritis are sometimes observed in patients receiving anti-TNF agents. We review the paradoxical inflammation induced by anti-TNF agents in patients with IBD, provide hypotheses for the occurrence of this paradoxical inflammation and give practical advice on how to manage these patients.
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29
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Burkhardt J, Kirsten H, Wolfram G, Quente E, Ahnert P. Differential allelic expression of IL13 and CSF2 genes associated with asthma. Genet Mol Biol 2012; 35:567-74. [PMID: 23055793 PMCID: PMC3459404 DOI: 10.1590/s1415-47572012005000055] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Accepted: 05/11/2012] [Indexed: 11/21/2022] Open
Abstract
An important area of genetic research is the identification of functional mechanisms in polymorphisms associated with diseases. A highly relevant functional mechanism is the influence of polymorphisms on gene expression levels (differential allelic expression, DAE). The coding single nucleotide polymorphisms (SNPs) CSF2rs25882 and IL13rs20541 have been associated with asthma. In this work, we investigated whether the mRNA expression levels of CSF2 or IL13 were correlated with these SNPs. Samples were analyzed by mass spectrometry-based quantification of gene expression. Both SNPs influenced gene expression levels (CSF2rs25882: poverall = 0.008 and pDAE samples = 0.00006; IL13rs20541: poverall = 0.059 and pDAE samples = 0.036). For CSF2, the expression level was increased by 27.4% (95% CI: 18.5%–35.4%) in samples with significant DAE in the presence of one copy of risk variant CSF2rs25882-T. The average expression level of IL13 was increased by 29.8% (95% CI: 3.1%–63.4%) in samples with significant DAE in the presence of one copy of risk variant IL13rs20541-A. Enhanced expression of CSF2 could stimulate macrophages and neutrophils during inflammation and may be related to the etiology of asthma. For IL-13, higher expression could enhance the functional activity of the asthma-associated isoform. Overall, the analysis of DAE provides an efficient approach for identifying possible functional mechanisms that link disease-associated variants with altered gene expression levels.
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Affiliation(s)
- Jana Burkhardt
- Translational Centre for Regenerative Medicine, Universität Leipzig, Leipzig,Germany. ; Fraunhofer Institute for Cell Therapy and Immunology, Leipzig, Germany
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30
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Gervin K, Vigeland MD, Mattingsdal M, Hammerø M, Nygård H, Olsen AO, Brandt I, Harris JR, Undlien DE, Lyle R. DNA methylation and gene expression changes in monozygotic twins discordant for psoriasis: identification of epigenetically dysregulated genes. PLoS Genet 2012; 8:e1002454. [PMID: 22291603 PMCID: PMC3262011 DOI: 10.1371/journal.pgen.1002454] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Accepted: 11/17/2011] [Indexed: 01/25/2023] Open
Abstract
Monozygotic (MZ) twins do not show complete concordance for many complex diseases; for example, discordance rates for autoimmune diseases are 20%-80%. MZ discordance indicates a role for epigenetic or environmental factors in disease. We used MZ twins discordant for psoriasis to search for genome-wide differences in DNA methylation and gene expression in CD4(+) and CD8(+) cells using Illumina's HumanMethylation27 and HT-12 expression assays, respectively. Analysis of these data revealed no differentially methylated or expressed genes between co-twins when analyzed separately, although we observed a substantial amount of small differences. However, combined analysis of DNA methylation and gene expression identified genes where differences in DNA methylation between unaffected and affected twins were correlated with differences in gene expression. Several of the top-ranked genes according to significance of the correlation in CD4(+) cells are known to be associated with psoriasis. Further, gene ontology (GO) analysis revealed enrichment of biological processes associated with the immune response and clustering of genes in a biological pathway comprising cytokines and chemokines. These data suggest that DNA methylation is involved in an epigenetic dysregulation of biological pathways involved in the pathogenesis of psoriasis. This is the first study based on data from MZ twins discordant for psoriasis to detect epigenetic alterations that potentially contribute to development of the disease.
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Affiliation(s)
- Kristina Gervin
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Magnus D. Vigeland
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Morten Mattingsdal
- Research Unit, Sorlandet Hospital, Kristiansand, Norway
- Institute of Psychiatry, University of Oslo, Oslo, Norway
| | - Martin Hammerø
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Heidi Nygård
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Anne O. Olsen
- Department of Dermatology, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Ingunn Brandt
- Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway
| | - Jennifer R. Harris
- Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway
| | - Dag E. Undlien
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Robert Lyle
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
- * E-mail:
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Paternoster L, Standl M, Chen CM, Ramasamy A, Bønnelykke K, Duijts L, Ferreira MA, Alves AC, Thyssen JP, Albrecht E, Baurecht H, Feenstra B, Sleiman PMA, Hysi P, Warrington NM, Curjuric I, Myhre R, Curtin JA, Groen-Blokhuis MM, Kerkhof M, Sääf A, Franke A, Ellinghaus D, Fölster-Holst R, Dermitzakis E, Montgomery SB, Prokisch H, Heim K, Hartikainen AL, Pouta A, Pekkanen J, Blakemore AIF, Buxton JL, Kaakinen M, Duffy DL, Madden PA, Heath AC, Montgomery GW, Thompson PJ, Matheson MC, Le Souëf P, Pourcain BS, Smith GD, Henderson J, Kemp JP, Timpson NJ, Deloukas P, Ring SM, Wichmann HE, Müller-Nurasyid M, Novak N, Klopp N, Rodríguez E, McArdle W, Linneberg A, Menné T, Nohr EA, Hofman A, Uitterlinden AG, van Duijn CM, Rivadeneira F, de Jongste JC, van der Valk RJP, Wjst M, Jogi R, Geller F, Boyd HA, Murray JC, Kim C, Mentch F, March M, Mangino M, Spector TD, Bataille V, Pennell CE, Holt PG, Sly P, Tiesler CMT, Thiering E, Illig T, Imboden M, Nystad W, Simpson A, Hottenga JJ, Postma D, Koppelman GH, Smit HA, Söderhäll C, Chawes B, Kreiner-Møller E, Bisgaard H, Melén E, Boomsma DI, Custovic A, Jacobsson B, Probst-Hensch NM, Palmer LJ, Glass D, Hakonarson H, Melbye M, Jarvis DL, Jaddoe VWV, Gieger C, Strachan DP, Martin NG, Jarvelin MR, Heinrich J, Evans DM, Weidinger S. Meta-analysis of genome-wide association studies identifies three new risk loci for atopic dermatitis. Nat Genet 2011; 44:187-92. [PMID: 22197932 PMCID: PMC3272375 DOI: 10.1038/ng.1017] [Citation(s) in RCA: 254] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 11/01/2011] [Indexed: 02/07/2023]
Abstract
Atopic dermatitis (AD) is a commonly occurring chronic skin disease with high heritability. Apart from filaggrin (FLG), the genes influencing atopic dermatitis are largely unknown. We conducted a genome-wide association meta-analysis of 5,606 affected individuals and 20,565 controls from 16 population-based cohorts and then examined the ten most strongly associated new susceptibility loci in an additional 5,419 affected individuals and 19,833 controls from 14 studies. Three SNPs reached genome-wide significance in the discovery and replication cohorts combined, including rs479844 upstream of OVOL1 (odds ratio (OR) = 0.88, P = 1.1 × 10(-13)) and rs2164983 near ACTL9 (OR = 1.16, P = 7.1 × 10(-9)), both of which are near genes that have been implicated in epidermal proliferation and differentiation, as well as rs2897442 in KIF3A within the cytokine cluster at 5q31.1 (OR = 1.11, P = 3.8 × 10(-8)). We also replicated association with the FLG locus and with two recently identified association signals at 11q13.5 (rs7927894; P = 0.008) and 20q13.33 (rs6010620; P = 0.002). Our results underline the importance of both epidermal barrier function and immune dysregulation in atopic dermatitis pathogenesis.
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Affiliation(s)
- Lavinia Paternoster
- MRC CAiTE centre, School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - Marie Standl
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Chih-Mei Chen
- Hannover Medical School, Department for Paediatric Pneumology, Allergy and Neonatology, Hannover, Germany
| | - Adaikalavan Ramasamy
- Respiratory Epidemiology and Public Health, Imperial College London, United Kingdom
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, United Kingdom
- Department of Medical and Molecular Genetics, Kings College London, Guy’s Hospital, London, United Kingdom
| | - Klaus Bønnelykke
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood; Health Sciences, University of Copenhagen & Copenhagen University Hospital, Gentofte, Denmark
| | - Liesbeth Duijts
- The Generation R Study Group, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Division of Respiratory Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Alexessander Couto Alves
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, United Kingdom
| | - Jacob P Thyssen
- National Allergy Research Centre, Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Denmark
| | - Eva Albrecht
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Hansjörg Baurecht
- Department of Dermatology and Allergy, Technische Universität München, Munich, Germany
- ZAUM-Center for Allergy and Environment, Helmholtz-Zentrum and Technische Universität, Munich, Germany
- Graduate School of Information Science in Health, Technische Universität München, Munich, Germany
| | - Bjarke Feenstra
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Patrick MA Sleiman
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Pirro Hysi
- Department of Twin Research and Genetic Epidemiology, King’s College London
| | - Nicole M Warrington
- School of Women’s and Infants’ Health, The University of Western Australia, Western Australia, Australia
| | - Ivan Curjuric
- Swiss Tropical and Public Health Institute (SwissTPH), Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Ronny Myhre
- Norwegian Institute of Public Health, Department of Genes and Environment, Division of Epidemiology, Oslo, Norway
| | - John A Curtin
- The University of Manchester, Manchester Academic Health Science Centre, NIHR Translational Research Facility in Respiratory Medicine, University Hospital of South Manchester NHS Foundation Trust, Manchester, UK
| | | | - Marjan Kerkhof
- Department of Pediatric Pulmonology and Allergology, University Medical Center Groningen, University of Groningen, GRIAC research institute, Groningen, The Netherlands
| | - Annika Sääf
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - David Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University Kiel, Kiel, Germany
| | - Regina Fölster-Holst
- Department of Dermatology, Allergology, and Venerology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Emmanouil Dermitzakis
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, 1211 Switzerland
- Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - Stephen B Montgomery
- Department of Genetic Medicine and Development, University of Geneva Medical School, Geneva, 1211 Switzerland
- Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - Holger Prokisch
- Institute of Human Genetics, Technische Universität München, Munich, Germany
- Institute of Human Genetics, Helmholtz Zentrum München – German Research Center for Environmental Health, Neuherberg, Germany
| | - Katharina Heim
- Institute of Human Genetics, Helmholtz Zentrum München – German Research Center for Environmental Health, Neuherberg, Germany
| | | | - Anneli Pouta
- Department of Obstetrics and Gynaecology, University of Oulu
- Department of Children, Young People and Families, National Institute for Health and Welfare, Finland
| | - Juha Pekkanen
- Department of Environmental Health, National Institute for Health and Welfare (THL), Kuopio, Finland
| | | | | | - Marika Kaakinen
- Institute of Health Sciences, University of Oulu, Oulu, Finland Biocenter Oulu, University of Oulu, Oulu, Finland
| | - David L Duffy
- Queensland Institute of Medical Research, Brisbane, Australia
| | - Pamela A Madden
- Washington University School of Medicine, St Louis, United States
| | - Andrew C Heath
- Washington University School of Medicine, St Louis, United States
| | | | - Philip J Thompson
- Lung Institute of Western Australia (WA) and Centre for Asthma, Allergy and Respiratory Research, University of WA, Perth, Australia
| | - Melanie C Matheson
- Centre for Molecular, Environmental, Genetic and Analytic Epidemiology, University of Melbourne, Melbourne, Australia
| | - Peter Le Souëf
- School of Paediatrics and Child Health, Princess Margaret Hospital for Children, Perth, Australia
| | - AAGC collaborators
- Australian Asthma Genetics Consortium, a full list of collaborators is included in the Supplementary Note
| | - Beate St Pourcain
- The School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - George Davey Smith
- MRC CAiTE centre, School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - John Henderson
- The School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - John P Kemp
- MRC CAiTE centre, School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - Nicholas J Timpson
- MRC CAiTE centre, School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - Panos Deloukas
- Wellcome Trust Sanger Institute, Cambridge, United Kingdom
| | - Susan M Ring
- The School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - H-Erich Wichmann
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology, Ludwig-Maximilians-Universität, Munich, Germany
- Klinikum Grosshadern, Munich, Germany
| | - Martina Müller-Nurasyid
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Medical Informatics, Biometry and Epidemiology, Chair of Epidemiology and Chair of Genetic Epidemiology, Ludwig-Maximilians-Universität, Munich, Germany
- Department of Medicine I, University Hospital Grosshadern, Ludwig-Maximilians-Universität, Munich, Germany
| | - Natalija Novak
- Department of Dermatology and Allergy, University of Bonn Medical Center, Bonn, Germany
| | - Norman Klopp
- Unit for Molecular Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Elke Rodríguez
- Department of Dermatology and Allergy, Technische Universität München, Munich, Germany
- ZAUM-Center for Allergy and Environment, Helmholtz-Zentrum and Technische Universität, Munich, Germany
| | - Wendy McArdle
- University of Bristol, ALSPAC Laboratory, School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - Allan Linneberg
- Research Center for Prevention and Health, Glostrup University Hospital, Denmark
| | - Torkil Menné
- National Allergy Research Centre, Department of Dermato-Allergology, Gentofte Hospital, University of Copenhagen, Denmark
| | - Ellen A Nohr
- Institute of Public Health, Aarhus University, Denmark
| | - Albert Hofman
- The Generation R Study Group, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - André G Uitterlinden
- The Generation R Study Group, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | | | - Fernando Rivadeneira
- The Generation R Study Group, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Internal Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Johan C de Jongste
- Department of Pediatrics, Division of Respiratory Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ralf JP van der Valk
- The Generation R Study Group, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Division of Respiratory Medicine, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Matthias Wjst
- Comprehensive Pneumology Center and Institute of Lung Biology and Disease, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Rain Jogi
- Lung Clinic, Tartu University, Tartu, Estonia
| | - Frank Geller
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Heather A Boyd
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | | | - Cecilia Kim
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Frank Mentch
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Michael March
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, King’s College London
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King’s College London
| | - Veronique Bataille
- Department of Twin Research and Genetic Epidemiology, King’s College London
| | - Craig E Pennell
- School of Women’s and Infants’ Health, The University of Western Australia, Western Australia, Australia
| | - Patrick G Holt
- Telethon Institute for Child Health Research and Centre for Child Health Research, The University of Western Australia, Western Australia, Australia
| | - Peter Sly
- Queensland Children’s Medical Research Institute; University of Queensland; WHO Collaborating Centre for Research on Children’s Environmental Health, Queensland, Australia
| | - Carla MT Tiesler
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- Division of Metabolic Diseases and Nutritional Medicine, Dr von Hauner Children’s Hospital, Ludwig-Maximilians University Munich, Munich, Germany
| | - Elisabeth Thiering
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Thomas Illig
- Unit for Molecular Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Medea Imboden
- Swiss Tropical and Public Health Institute (SwissTPH), Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Wenche Nystad
- Norwegian Institute of Public Health, Division of Epidemiology, Oslo, Norway
| | - Angela Simpson
- The University of Manchester, Manchester Academic Health Science Centre, NIHR Translational Research Facility in Respiratory Medicine, University Hospital of South Manchester NHS Foundation Trust, Manchester, UK
| | - Jouke-Jan Hottenga
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Dirkje Postma
- Department of Pulmonology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Gerard H Koppelman
- Dpt of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children ’s Hospital, GRIAC research institute, University Medical Center Groningen, University of Groningen, The Netherlands
| | - Henriette A Smit
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, The Netherlands
| | - Cilla Söderhäll
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Bo Chawes
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood; Health Sciences, University of Copenhagen & Copenhagen University Hospital, Gentofte, Denmark
| | - Eskil Kreiner-Møller
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood; Health Sciences, University of Copenhagen & Copenhagen University Hospital, Gentofte, Denmark
| | - Hans Bisgaard
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood; Health Sciences, University of Copenhagen & Copenhagen University Hospital, Gentofte, Denmark
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Astrid Lindgren Children’s Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Dorret I Boomsma
- Department of Biological Psychology, VU University, Amsterdam, The Netherlands
| | - Adnan Custovic
- The University of Manchester, Manchester Academic Health Science Centre, NIHR Translational Research Facility in Respiratory Medicine, University Hospital of South Manchester NHS Foundation Trust, Manchester, UK
| | - Bo Jacobsson
- Norwegian Institute of Public Health, Department of Genes and Environment, Division of Epidemiology, Oslo, Norway
- Department of Obstetrics and Gynecology, Sahlgrenska University Hospital, Sahlgrenska Academy, Göteborg University, Sweden
| | - Nicole M Probst-Hensch
- Swiss Tropical and Public Health Institute (SwissTPH), Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Lyle J Palmer
- Ontario Institute for Cancer Research, Toronto; University of Toronto, Toronto, Canada
| | - Daniel Glass
- Department of Twin Research and Genetic Epidemiology, King’s College London
| | - Hakon Hakonarson
- The Center for Applied Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Pediatric, University of Pennsylvania School of Medicine, Philadelphia, PA, USA
| | - Mads Melbye
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Deborah L Jarvis
- Respiratory Epidemiology and Public Health, Imperial College London, United Kingdom
| | - Vincent WV Jaddoe
- The Generation R Study Group, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
- Department of Pediatrics, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Christian Gieger
- Institute of Genetic Epidemiology, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - The GOYA consortium
- The Genetics of Overweight Young Adults consortium, list of members in Supplementary Note
| | - David P Strachan
- Division of Population Health Sciences and Education, St George’s, University of London, London, UK
| | | | - Marjo-Riitta Jarvelin
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, United Kingdom
- Institute of Health Sciences, Biocenter, University of Oulu, Finland
- National Institute of Health and Welfare, Finland
| | - Joachim Heinrich
- Institute of Epidemiology I, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - David M Evans
- MRC CAiTE centre, School of Social & Community Medicine, University of Bristol, Bristol, UK
| | - Stephan Weidinger
- Department of Dermatology, Allergology, and Venerology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
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Coda AB, Sinha AA. Integration of genome-wide transcriptional and genetic profiles provides insights into disease development and clinical heterogeneity in Alopecia areata. Genomics 2011; 98:431-9. [DOI: 10.1016/j.ygeno.2011.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 08/22/2011] [Accepted: 08/31/2011] [Indexed: 12/22/2022]
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Abstract
Psoriasis is a common relapsing and remitting immune-mediated inflammatory disease that affects the skin and joints. This review focuses on current immunogenetic concepts, key cellular players, and axes of cytokines that are thought to contribute to disease pathogenesis. We highlight potential therapeutic targets and give an overview of the currently used immune-targeted therapies.
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Affiliation(s)
- Gayathri K Perera
- St. John's Institute of Dermatology, King's College London, London SE1 9RT, United Kingdom.
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34
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Tung JY, Do CB, Hinds DA, Kiefer AK, Macpherson JM, Chowdry AB, Francke U, Naughton BT, Mountain JL, Wojcicki A, Eriksson N. Efficient replication of over 180 genetic associations with self-reported medical data. PLoS One 2011; 6:e23473. [PMID: 21858135 PMCID: PMC3157390 DOI: 10.1371/journal.pone.0023473] [Citation(s) in RCA: 109] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Accepted: 07/18/2011] [Indexed: 12/20/2022] Open
Abstract
While the cost and speed of generating genomic data have come down dramatically in recent years, the slow pace of collecting medical data for large cohorts continues to hamper genetic research. Here we evaluate a novel online framework for obtaining large amounts of medical information from a recontactable cohort by assessing our ability to replicate genetic associations using these data. Using web-based questionnaires, we gathered self-reported data on 50 medical phenotypes from a generally unselected cohort of over 20,000 genotyped individuals. Of a list of genetic associations curated by NHGRI, we successfully replicated about 75% of the associations that we expected to (based on the number of cases in our cohort and reported odds ratios, and excluding a set of associations with contradictory published evidence). Altogether we replicated over 180 previously reported associations, including many for type 2 diabetes, prostate cancer, cholesterol levels, and multiple sclerosis. We found significant variation across categories of conditions in the percentage of expected associations that we were able to replicate, which may reflect systematic inflation of the effects in some initial reports, or differences across diseases in the likelihood of misdiagnosis or misreport. We also demonstrated that we could improve replication success by taking advantage of our recontactable cohort, offering more in-depth questions to refine self-reported diagnoses. Our data suggest that online collection of self-reported data from a recontactable cohort may be a viable method for both broad and deep phenotyping in large populations.
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Affiliation(s)
- Joyce Y Tung
- 23andMe, Inc., Mountain View, California, United States of America.
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35
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Ariza ME, Williams MV. A human endogenous retrovirus K dUTPase triggers a TH1, TH17 cytokine response: does it have a role in psoriasis? J Invest Dermatol 2011; 131:2419-27. [PMID: 21776007 DOI: 10.1038/jid.2011.217] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Psoriasis is a chronic inflammatory immune disease of the skin characterized by a complex interplay between multiple risk genes and their interactions with environmental factors. Recent haplotype analyses have suggested that deoxyuridine triphosphate nucleotidohydrolase (dUTPase) encoded by a human endogenous retrovirus K (HERV-K) may be a candidate gene for the psoriasis susceptibility 1 locus. However, no functional studies have been conducted to determine the role of HERV-K dUTPase in psoriasis. For this purpose, we constructed an HERV-K dUTPase wild-type sequence, as well as specific mutations reflecting the genotype characteristic of high- and low-risk haplotypes, purified the recombinant proteins, and evaluated whether they could modulate innate and/or adaptive immune responses. In this study, we demonstrate that wild-type and mutant HERV-K dUTPase proteins induce the activation of NF-κB through Toll-like receptor 2, independent of enzymatic activity. Proteome array studies revealed that treatment of human primary cells with wild-type and mutant HERV-K dUTPase proteins triggered the secretion of T(H)1 and T(H)17 cytokines involved in the formation of psoriatic plaques, including IL-12p40, IL-23, IL-17, tumor necrosis factor-α, IL-8, and CCL20, in dendritic/Langerhans-like cells and to a lesser extent in keratinocytes. These data support HERV-K dUTPase as a potential contributor to psoriasis pathophysiology.
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Affiliation(s)
- Maria-Eugenia Ariza
- Department of Environmental Health Sciences, Arnold School of Public Health, University of South Carolina, Columbia, South Carolina, USA.
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Chen H, Poon A, Yeung C, Helms C, Pons J, Bowcock AM, Kwok PY, Liao W. A genetic risk score combining ten psoriasis risk loci improves disease prediction. PLoS One 2011; 6:e19454. [PMID: 21559375 PMCID: PMC3084857 DOI: 10.1371/journal.pone.0019454] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 03/30/2011] [Indexed: 11/23/2022] Open
Abstract
Psoriasis is a chronic, immune-mediated skin disease affecting 2–3% of Caucasians. Recent genetic association studies have identified multiple psoriasis risk loci; however, most of these loci contribute only modestly to disease risk. In this study, we investigated whether a genetic risk score (GRS) combining multiple loci could improve psoriasis prediction. Two approaches were used: a simple risk alleles count (cGRS) and a weighted (wGRS) approach. Ten psoriasis risk SNPs were genotyped in 2815 case-control samples and 858 family samples. We found that the total number of risk alleles in the cases was significantly higher than in controls, mean 13.16 (SD 1.7) versus 12.09 (SD 1.8), p = 4.577×10−40. The wGRS captured considerably more risk than any SNP considered alone, with a psoriasis OR for high-low wGRS quartiles of 10.55 (95% CI 7.63–14.57), p = 2.010×10−65. To compare the discriminatory ability of the GRS models, receiver operating characteristic curves were used to calculate the area under the curve (AUC). The AUC for wGRS was significantly greater than for cGRS (72.0% versus 66.5%, p = 2.13×10−8). Additionally, the AUC for HLA-C alone (rs10484554) was equivalent to the AUC for all nine other risk loci combined (66.2% versus 63.8%, p = 0.18), highlighting the dominance of HLA-C as a risk locus. Logistic regression revealed that the wGRS was significantly associated with two subphenotypes of psoriasis, age of onset (p = 4.91×10−6) and family history (p = 0.020). Using a liability threshold model, we estimated that the 10 risk loci account for only11.6% of the genetic variance in psoriasis. In summary, we found that a GRS combining 10 psoriasis risk loci captured significantly more risk than any individual SNP and was associated with early onset of disease and a positive family history. Notably, only a small fraction of psoriasis heritability is captured by the common risk variants identified to date.
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Affiliation(s)
- Haoyan Chen
- Department of Dermatology, University of California San Francisco, San Francisco, California, United States of America
| | - Annie Poon
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, California, United States of America
- Institute for Human Genetics, University of California San Francisco, San Francisco, California, United States of America
| | - Celestine Yeung
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, California, United States of America
- Institute for Human Genetics, University of California San Francisco, San Francisco, California, United States of America
| | - Cynthia Helms
- Division of Human Genetics, Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Jennifer Pons
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, California, United States of America
- Institute for Human Genetics, University of California San Francisco, San Francisco, California, United States of America
| | - Anne M. Bowcock
- Division of Human Genetics, Department of Genetics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Pui-Yan Kwok
- Department of Dermatology, University of California San Francisco, San Francisco, California, United States of America
- Cardiovascular Research Institute, University of California San Francisco, San Francisco, California, United States of America
- Institute for Human Genetics, University of California San Francisco, San Francisco, California, United States of America
| | - Wilson Liao
- Department of Dermatology, University of California San Francisco, San Francisco, California, United States of America
- * E-mail:
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37
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Bowes J, Eyre S, Flynn E, Ho P, Salah S, Warren RB, Marzo-Ortega H, Coates L, McManus R, Ryan AW, Kane D, Korendowych E, McHugh N, FitzGerald O, Packham J, Morgan AW, Griffiths CEM, Bruce IN, Worthington J, Barton A. Evidence to support IL-13 as a risk locus for psoriatic arthritis but not psoriasis vulgaris. Ann Rheum Dis 2011; 70:1016-9. [PMID: 21349879 PMCID: PMC3086035 DOI: 10.1136/ard.2010.143123] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Objective There is great interest in the identification of genetic factors that differentiate psoriatic arthritis (PsA) from psoriasis vulgaris (PsV), as such discoveries could lead to the identification of distinct underlying aetiological pathways. Recent studies identified single nucleotide polymorphisms (SNPs) in the interleukin 13 (IL-13) gene region as risk factors for PsV. Further investigations in one of these studies found the effect to be primarily restricted to PsA, thus suggesting the discovery of a specific genetic risk factor for PsA. Given this intriguing evidence, association to this gene was investigated in large collections of PsA and PsV patients and healthy controls. Methods Two SNPs (rs20541 and rs1800925) mapping to the IL-13 gene were genotyped in 1057 PsA and 778 type I PsV patients using the Sequenom genotyping platform. Genotype frequencies were compared to those of 5575 healthy controls. Additional analyses were performed in phenotypic subgroups of PsA (type I or II PsV and in those seronegative for rheumatoid factor). Results Both SNPs were found to be highly associated with susceptibility to PsA (rs1800925 ptrend = 6.1×10−5 OR 1.33, rs20541 ptrend = 8.0×10−4 OR 1.27), but neither SNP was significantly associated with susceptibility to PsV. Conclusions This study confirms that the effect of IL-13 risk locus is specific for PsA, thus highlighting a key biological pathway that differentiates PsA from PsV. The identification of markers that differentiate the two diseases raises the possibility in future of allowing screening of PsV patients to identify those at risk of developing PsA.
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Affiliation(s)
- John Bowes
- Arthritis Research UK Epidemiology Unit, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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Rodríguez E, Eyerich K, Weidinger S. Genetik häufiger chronisch-entzündlicher Hauterkrankungen. Hautarzt 2011; 62:107-18. [DOI: 10.1007/s00105-010-2053-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Li Y, Shiffman D, Oberbauer R. Analysis of single nucleotide polymorphisms in case-control studies. Methods Mol Biol 2011; 719:219-234. [PMID: 21370086 DOI: 10.1007/978-1-61779-027-0_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Single nucleotide polymorphisms (SNPs) are the most common type of genetic variants in the human genome. SNPs are known to modify susceptibility to complex diseases. We describe and discuss methods used to identify SNPs associated with disease in case-control studies. An outline on study population selection, sample collection and genotyping platforms is presented, complemented by SNP selection, data preprocessing and analysis.
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Rybicki BA, Levin AM, McKeigue P, Datta I, Gray-McGuire C, Colombo M, Reich D, Burke RR, Iannuzzi MC. A genome-wide admixture scan for ancestry-linked genes predisposing to sarcoidosis in African-Americans. Genes Immun 2010; 12:67-77. [PMID: 21179114 PMCID: PMC3058725 DOI: 10.1038/gene.2010.56] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Genome-wide linkage and association studies have uncovered variants associated with sarcoidosis, a multi-organ granulomatous inflammatory disease. African ancestry may influence disease pathogenesis since African Americans are more commonly affected by sarcoidosis. Therefore, we conducted the first sarcoidosis genome-wide ancestry scan using a map of 1,384 highly ancestry informative single nucleotide polymorphisms genotyped on 1,357 sarcoidosis cases and 703 unaffected controls self-identified as African American. The most significant ancestry association was at marker rs11966463 on chromosome 6p22.3 (ancestry association risk ratio (aRR)= 1.90; p=0.0002). When we restricted the analysis to biopsy-confirmed cases, the aRR for this marker increased to 2.01; p=0.00007. Among the eight other markers that demonstrated suggestive ancestry associations with sarcoidosis were rs1462906 on chromosome 8p12 which had the most significant association with European ancestry (aRR=0.65; p=0.002), and markers on chromosomes 5p13 (aRR=1.46; p=0.005) and 5q31 (aRR=0.67; p=0.005), which correspond to regions we previously identified through sib pair linkage analyses. Overall, the most significant ancestry association for Scadding stage IV cases was to marker rs7919137 on chromosome 10p11.22 (aRR=0.27; p=2×10−5), a region not associated with disease susceptibility. In summary, through admixture mapping of sarcoidosis we have confirmed previous genetic linkages and identified several novel putative candidate loci for sarcoidosis.
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Affiliation(s)
- B A Rybicki
- Department of Biostatistics and Research Epidemiology, Henry Ford Hospital, Detroit, MI 48310, USA.
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Ellinghaus E, Ellinghaus D, Stuart PE, Nair RP, Debrus S, Raelson JV, Belouchi M, Fournier H, Reinhard C, Ding J, Li Y, Tejasvi T, Gudjonsson J, Stoll SW, Voorhees JJ, Lambert S, Weidinger S, Eberlein B, Kunz M, Rahman P, Gladman DD, Gieger C, Wichmann HE, Karlsen TH, Mayr G, Albrecht M, Kabelitz D, Mrowietz U, Abecasis GR, Elder JT, Schreiber S, Weichenthal M, Franke A. Genome-wide association study identifies a psoriasis susceptibility locus at TRAF3IP2. Nat Genet 2010; 42:991-5. [PMID: 20953188 DOI: 10.1038/ng.689] [Citation(s) in RCA: 291] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Accepted: 07/26/2010] [Indexed: 12/22/2022]
Abstract
Psoriasis is a multifactorial skin disease characterized by epidermal hyperproliferation and chronic inflammation, the most common form of which is psoriasis vulgaris (PsV). We present a genome-wide association analysis of 2,339,118 SNPs in 472 PsV cases and 1,146 controls from Germany, with follow-up of the 147 most significant SNPs in 2,746 PsV cases and 4,140 controls from three independent replication panels. We identified an association at TRAF3IP2 on 6q21 and genotyped two SNPs at this locus in two additional replication panels (the combined discovery and replication panels consisted of 6,487 cases and 8,037 controls; combined P = 2.36 × 10⁻¹⁰ for rs13210247 and combined P = 1.24 × 10⁻¹⁶ for rs33980500). About 15% of psoriasis cases develop psoriatic arthritis (PsA). A stratified analysis of our datasets including only PsA cases (1,922 cases compared to 8,037 controls, P = 4.57 × 10⁻¹² for rs33980500) suggested that TRAF3IP2 represents a shared susceptibility for PsV and PsA. TRAF3IP2 encodes a protein involved in IL-17 signaling and which interacts with members of the Rel/NF-κB transcription factor family.
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Affiliation(s)
- Eva Ellinghaus
- Institute of Clinical Molecular Biology, Christian-Albrechts-University, Kiel, Germany
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Carriers of rare missense variants in IFIH1 are protected from psoriasis. J Invest Dermatol 2010; 130:2768-72. [PMID: 20668468 DOI: 10.1038/jid.2010.214] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Testing of ∼25,000 putative functional single-nucleotide polymorphisms (SNPs) across the human genome in a genetic association study has identified three psoriasis genes, IL12B, IL23R, and IL13. We now report evidence for the association of psoriasis risk with missense SNPs in the interferon induced with helicase C domain 1 gene (IFIH1). The rare alleles of two independent SNPs were associated with decreased risk of psoriasis--rs35667974 (Ile923Val): odds ratio (OR) for minor allele carriers is 0.43, P=2.36 × 10(-5) (2,098 cases vs. 1,748 controls); and rs10930046 (His460Arg): OR for minor allele carriers is 0.51, P=6.47 × 10(-4) (2,098 cases vs. 1,744 controls). Compared to noncarriers, carriers of the 923Val and/or 460Arg variants were protected from psoriasis (OR=0.46, P=5.56 × 10(-8)). To our knowledge, these results suggest that IFIH1 is a previously unreported psoriasis gene.
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Duffin KC, Woodcock J, Krueger GG. Genetic variations associated with psoriasis and psoriatic arthritis found by genome-wide association. Dermatol Ther 2010; 23:101-13. [PMID: 20415816 DOI: 10.1111/j.1529-8019.2010.01303.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Psoriasis and psoriatic arthritis are immune disorders with a complex polygenic basis. HLA-Cw6, which lies in the major histocompatibility region on chromosome 6, is considered the major genetic determinant of psoriasis. Recent genome-wide association studies have identified new variants outside of the MHC with relevance to the immunology of psoriasis. Variants in or near genes that encode subunits of cytokines (IL12B, IL23A) or cytokine receptors (IL23R) are interesting given that the gene product of IL12B, p40, is the target of a recently approved monoclonal antibody therapy for psoriasis (ustekinumab). Association with psoriasis and psoriatic arthritis has been found in TNFAIP3 and TNFIP1, ubiquitin ligases in the NF-kappaB pathway, and IL13, a Th2 cytokine. Copy number variation of human beta-defensin and late cornified envelope genes also associate with psoriasis. Many of these genetic variations also associate with immune disorders considered psoriatic co-morbidities, including Crohn's disease and diabetes.
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Gudjonsson JE, Ding J, Johnston A, Tejasvi T, Guzman AM, Nair RP, Voorhees JJ, Abecasis GR, Elder JT. Assessment of the psoriatic transcriptome in a large sample: additional regulated genes and comparisons with in vitro models. J Invest Dermatol 2010; 130:1829-40. [PMID: 20220767 PMCID: PMC3128718 DOI: 10.1038/jid.2010.36] [Citation(s) in RCA: 173] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To further elucidate molecular alterations in psoriasis, we performed a gene expression study of 58 paired lesional and uninvolved psoriatic and 64 control skin samples. Comparison of involved psoriatic (PP) and normal (NN) skin identified 1,326 differentially regulated transcripts encoding 918 unique genes (549 up- and 369 downregulated), of which over 600 are to our knowledge previously unreported, including S100A7A, THRSP, and ELOVL3. Strongly upregulated genes included SERPINB4, PI3, DEFB4, and several S100-family members. Strongly downregulated genes included Wnt-inhibitory factor-1 (WIF1), beta-cellulin (BTC), and CCL27. Enriched gene ontology categories included immune response, defense response, and keratinocyte differentiation. Biological processes regulating fatty acid and lipid metabolism were enriched in the down-regulated gene set. Comparison of the psoriatic transcriptome to the transcriptomes of cytokine-stimulated cultured keratinocytes (IL-17, IL-22, IL-1alpha, IFN-gamma, TNF-alpha, and OSM) showed surprisingly little overlap, with the cytokine-stimulated keratinocyte expression representing only 2.5, 0.7, 1.5, 5.6, 5.0, and 1.9% of the lesional psoriatic dysregulated transcriptome, respectively. This comprehensive analysis of differentially regulated transcripts in psoriasis provides additional insight into the pathogenic mechanisms involved and emphasizes the need for more complex yet tractable experimental models of psoriasis.
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Affiliation(s)
- Johann E Gudjonsson
- Department of Dermatology, University of Michigan Medical School, Ann Arbor, Michigan 48109, USA.
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Schrodi SJ. Genome-wide association scan in psoriasis: new insights into chronic inflammatory disease. Expert Rev Clin Immunol 2010; 4:565-71. [PMID: 20476959 DOI: 10.1586/1744666x.4.5.565] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Evaluation of: Liu Y, Helms C, Liao W et al. A genome-wide association study of psoriasis and psoriatic arthritis identifies new disease loci. PLoS Genet. 4, e1000041 (2008). Genome-wide association scans have delivered on their promise of revealing susceptibility polymorphisms underlying common diseases. This comprehensive psoriasis study by Liu and colleagues reports confirmation of previously identified genes (HLA-C, IL12B and IL23R), identifies several novel psoriasis loci and is the first to report psoriatic arthritis association on a genome-wide scale. Along with other recent studies, this work gives further evidence that IL-23-mediated signaling is a key component of both psoriasis and psoriatic arthritis pathogenesis. Importantly, this study provides evidence of a single-nucleotide polymorphism (SNP), 35 kb upstream of HLA-C, which is stronger than Cw 0602 - the variant traditionally attributed to the MHC-linked psoriasis-susceptibility effect. Within this region, the authors also discovered an independent SNP with very strong predisposing effects. SNPs in the COG6 region and the USP8-TNFAIP8l3 region are among the novel psoriasis associations reported. In addition, a region showing linkage on chromosome 1q demonstrated association in the epidermal differentiation complex. Four SNPs over a 439-kb region on chromosome 4q27, where KIAA1109, ADAD1 and two cytokine-encoding genes (IL2 and IL21) reside, exhibit intriguing correlation with psoriatic arthritis, although the signal strength is moderate. These results, while still preliminary, may substantially expand our knowledge of psoriasis and psoriatic arthritis genetics, opening new avenues of chronic inflammatory disease research.
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Affiliation(s)
- Steven J Schrodi
- Statistical Genetics Group, Celera, Inc., 1401 Harbor Bay Parkway, Alameda, CA 94502, USA.
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Rácz E, Prens EP. Molecular pathophysiology of psoriasis and molecular targets of antipsoriatic therapy. Expert Rev Mol Med 2009; 11:e38. [PMID: 20003607 DOI: 10.1017/s146239940900129x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Psoriasis is a chronic inflammatory skin disease characterised by elevated red scaly plaques on specific body sites. Histologically, the plaques are defined by epidermal hyperplasia, epidermal and dermal infiltration by leukocytes, and changes in the dermal microvasculature. Differentiation and activation are disturbed in lesional psoriatic keratinocytes, and the pool of proliferating keratinocytes is increased, which is accompanied by enhanced production of proinflammatory cytokines, adhesion molecules and antimicrobial peptides. These changes in psoriatic keratinocytes are caused by altered expression of genes associated with epidermal differentiation, and by activation of signalling pathways involving signal transducer and activator of transcription 3 (STAT3), type I interferon (IFN) and mitogen-activated protein kinase (MAPK). The number of T cells, and myeloid and plasmacytoid dendritic cells (DCs) is markedly increased in psoriatic lesions. Myeloid DCs produce interleukin (IL)-23, tumour necrosis factor (TNF)-alpha and inducible nitric oxide synthase (iNOS), which are crucial cytokines in the pathogenesis of psoriasis. IL-23 stimulates the secretion of IL-22 by T helper 17 cells, and IL-22 induces epidermal hyperplasia. The crosstalk between keratinocytes and leukocytes via their proinflammatory cytokines creates the vicious circle of chronic skin inflammation seen in psoriasis. This suggests that optimal treatment of psoriasis needs to target pathogenic pathways in both leukocytes and keratinocytes.
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Affiliation(s)
- Emoke Rácz
- Department of Dermatology and Department of Immunology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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Neue Entwicklungen in der Psoriasisgenetik. MED GENET-BERLIN 2009. [DOI: 10.1007/s11825-009-0196-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Zusammenfassung
Psoriasis vulgaris (PsV) ist eine chronische, entzündliche Hauterkrankung mit einer multifaktoriellen Vererbung. Nachdem der stärkste genetische Risikofaktor, das HLA-Cw0602-Allel (bzw. ein Allel in starkem Kopplungsungleichgewicht), insbesondere für die frühere Manifestationsform (<40. Lebensjahr), schon seit langem bekannt ist, konnten innerhalb der letzten beiden Jahre durch genomweite Assoziationsstudien sowie Untersuchungen von Kopienzahlveränderungen zahlreiche weitere Suszeptibilitätsfaktoren identifiziert werden. Zu den am besten replizierten Befunden zählen Varianten in 3 Genen des Interleukin-23-Rezeptor-Signalwegs. Außerdem konnten mehrere Gene des NFκB-Signalwegs (nukleärer Faktor κB) sowie ein Gen, dessen Produkt immunmodulatorisch in der TH2-Zell-vermittelten (TH-Zelle: T-Helfer-Zelle) Antwort wirkt, identifiziert werden. Neben dieser Bestätigung von PsV als einer immunologisch bedingten Erkrankung weisen mit PsV assoziierte Kopienzahlveränderungen auf eine zusätzliche zugrunde liegende Barrierestörung hin. Dies sind zum einen eine reduzierte Kopienzahl zweier epidermal exprimierter Gene des Clusters der Late-cornified-Envelope-Gene auf Chromosom 1q und zum anderen eine erhöhte Kopienzahl eines β-Defensin-Clusters auf Chromosom 8p.
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Naka I, Nishida N, Patarapotikul J, Nuchnoi P, Tokunaga K, Hananantachai H, Tsuchiya N, Ohashi J. Identification of a haplotype block in the 5q31 cytokine gene cluster associated with the susceptibility to severe malaria. Malar J 2009; 8:232. [PMID: 19840389 PMCID: PMC2770543 DOI: 10.1186/1475-2875-8-232] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2009] [Accepted: 10/19/2009] [Indexed: 11/26/2022] Open
Abstract
Background It has been previously demonstrated that a single nucleotide polymorphism (SNP) in the IL13 promoter region, IL13 -1055T>C (rs1800925), was associated with susceptibility to severe malaria in Thais. In the present study, fine association mapping for a cytokine gene cluster including IL4, IL5, and IL13 on chromosome 5q31 was conducted using the same malaria subjects to refine the region containing a primary variant or a haplotype susceptible to severe malaria. Methods A total of 82 SNPs spanning 522 kb of the 5q31 region were analysed in 368 patients with Plasmodium falciparum malaria (203 mild malaria and 165 severe malaria patients). Results Only rs1881457 located in the promoter region of IL13, which is in linkage disequilibrium with rs1800925 (r2 = 0.73), showed a significant association with severe malaria after adjusting for multiple testing (P = 0.046 by permutation test). This SNP was in a haplotype block spanning 97 kb (from rs2069812 to rs2240032). The detected haplotype block contained the RAD50 gene and the promoter of IL13, but not the other genes. Conclusion A haplotype block in which a primary polymorphism associated with severe malaria is likely to be encoded was identified in Thai malaria patients.
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Affiliation(s)
- Izumi Naka
- Doctoral Programme in Life System Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Ibaraki, Japan.
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Affiliation(s)
- Frank O Nestle
- St. John's Institute of Dermatology, Federation of Clinical Immunology Societies Centre of Excellence at King's College London and Guy's and St. Thomas' Foundation Trust, London, United Kingdom.
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Association between IL13 polymorphisms and psoriatic arthritis is modified by smoking. J Invest Dermatol 2009; 129:2777-83. [PMID: 19554022 DOI: 10.1038/jid.2009.169] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Genetic and environmental factors influence the development of psoriasis (Ps) and psoriatic arthritis (PsA). Recently, we reported that three IL13 polymorphisms, rs1800925, rs20541, and rs848, on chromosome 5q31 conferred the risk for Ps. IL13 encodes IL-13, a Th2 cytokine, and rs1800925 and rs20541 confer risk of asthma. Further, smoking may increase the risk of developing Ps. We examined the association between IL13 polymorphisms, smoking, and PsA in two Ps sample sets genotyped for rs1800925, rs20541, and rs848. We found that the minor alleles (rs1800925*T, rs20541*A, and rs848*A) were significantly associated with protection from PsA versus controls, and that no association with Ps is seen when the PsA cases are excluded. This effect was strongest with rs1800925*T (odds ratio (OR) 0.40, P(allelic) 0.000067). The prevalence of PsA in cases with the rs1800925*CT or TT genotype is about half that of those with the CC genotype (15.5 vs 32.1%, P=0.0002). However, smoking appears to abrogate this effect (CT/TT/non-smoker, prevalence of PsA 13%, OR 0.20, P=0.0001; CT/TT/smoker, prevalence 38%, OR 0.88, P=0.74, CC/non-smoker, prevalence 42% (reference), CC/smoker prevalence 47%, OR 1.21, P=0.47). This study suggests that IL13 polymorphisms associate most strongly with PsA and that smoking may modulate this effect.
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