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3. Reconciling Healthcare Professional and Patient Perspectives in the Development of Disease Activity and Response Criteria in Connective Tissue Disease Related Interstitial Lung Diseases

Author

Saketkoo, La, Mittoo, S, Frankel, S, Lesage, D, Sarver, C, Phillips, K, Strand, V, Matteson, El, OMERACT Baughman RP, Brown, Kk, Christmann, Rb, Dellaripa, P, Denton, Cp, Distler, O, Fischer, A, Flaherty, K, Huscher, D, Khanna, D, Kowal Bielecka, O, Merkel, Pa, Oddis, Cv, Pittrow, D, Sandorfi, N, Seibold, Jr, Swigris, J, Wells, A, Antoniou, K, Castelino, Fv, Christopher Stine, L, Collard, Hr, Cottin, V, Danoff, S, Hedlund, R, Highland, Kb, Hummers, L, Lynch, Da, Kim, Ds, Ryu, Jh, Miller, Fw, Nichols, K, Proudman, Sm, Richeldi, L, Shah, Aa, van den Assum, P, Aggarwal, R, Ainslie, G, Alkassab, F, Allanore, Y, Anderson, Me, Andonopoulos, Ap, Antin Ozerkis, D, Arrobas, A, Ascherman, Dp, Assassi, S, Baron, M, Bathon, Jm, Baughman, Rp, Behr, J, Beretta, L, Bingham, Co, Binnie, M, Birring, Ss, Boin, F, Bongartz, T, Bourdin, A, Bouros, D, Brasington, R, Bresser, P, Buch, Mh, Burge, Ps, Carmona, L, Carreira, Pe, Carvalho, Cr, Catoggio, Lj, Chan, Km, Chapman, J, Chatterjee, S, Chua, F, Chung, L, Conron, M, Corte, T, Cosgrove, G, Costabel, U, Cox, G, Crestani, B, Crofford, Lj, Csuka, Me, Curbelo, P, Czirják, L, Daniil, Z, D'Arsigny, Cl, Davis, Gs, de Andrade JA, Dellaripa, Pf, De Vuyst, P, Dempsey, Oj, Derk, Ct, Distler, J, Dixon, Wg, Downey, G, Doyle, Mk, Drent, M, Durairaj, L, Emery, P, Espinoza, Lr, Farge, D, Fathi, M, Fell, Cd, Fessler, Bj, Fitzgerald, Je, Flaherty, Kr, Foeldvari, I, Fox, Ga, Frech, Tm, Freitas, S, Furst, De, Gabrielli, A, García Vicuña, R, Georgiev, Ob, Gerbino, A, Gillisen, A, Gladman, Dd, Glassberg, M, Gochuico, Br, Gogali, A, Goh, Ns, Goldberg, A, Goldberg, Hj, Gourley, Mf, Griffing, L, Grutters, Jc, Gunnarsson, R, Hachulla, E, Hall, Fc, Harari, S, Herrick, Al, Herzog, El, Hesselstrand, R, Highland, K, Hirani, N, Hodgson, U, Hollingsworth, Hm, Homer, Rj, Hoyles, Rk, Hsu, Vm, Hubbard, Rb, Hunzelmann, N, Isasi, Me, Isasi, Es, Jacobsen, S, Jimenez, Sa, Johnson, Sr, Jones, Ch, Kahaleh, B, Kairalla, Ra, Kalluri, M, Kalra, S, Kaner, Rj, Kinder, Bw, Kiter, G, Klingsberg, Rc, Kokosi, M, Kolb, Mr, Kowal Bielecka OM, Kur Zalewska, J, Kuwana, M, Lake, Fr, Lally, Ev, Lasky, Ja, Laurindo, Im, Able, L, Lee, P, Leonard, Ct, Lien, Dc, Limper, Ah, Liossis, Sn, Lohr, Km, Loyd, Je, Lundberg, Ie, Mageto, Yn, Maher, Tm, Mahmud, Th, Manganas, H, Marie, I, Marras, Tk, Martinez, Ja, Martinez, Fj, Mathieu, A, Matucci Cerinic, M, Mayes, Md, Mckown, Km, Medsger, Ta, Meehan, Rt, Mendes, Ac, Meyer, Kc, Millar, Ab, Moğulkoc, N, Molitor, Ja, Morais, A, Mouthon, L, Müller, V, Müller Quernheim, J, Nadashkevich, O, Nador, R, Nash, P, Nathan, Sd, Navarro, C, Neves, S, Noth, I, Nunes, H, Olson, Al, Opitz, Cf, Padilla, M, Pappas, D, Parfrey, H, Pego Reigosa JM, Pereira, Ca, Perez, R, Pope, Je, Porter, Jc, Renzoni, Ea, Riemekasten, G, Riley, Dj, Rischmueller, M, Rodriguez Reyna TS, Rojas Serrano, J, Roman, J, Rosen, Gd, Rossman, M, Rothfield, N, Sahn, Sa, Sanduzzi, A, Scholand, Mb, Selman, M, Senécal, Jl, Seo, P, Shah, A, Silver, Rm, Solomon, Jj, Steen, V, Stevens, W, Strange, C, Sussman, R, Sutton, Ed, Sweiss, Nj, Tornling, G, Tzelepis, Ge, Undurraga, A, Vacca, A, Vancheri, Carlo, Varga, J, Veale, Dj, Volkov, S, Walker, Ua, Wells, Au, Wencel, M, Wesselius, Lj, Wickremasinghe, M, Wilcox, P, Wilsher, Ml, Wollheim, Fa, Wuyts, Wa, Yung, G, Zanon, P, Zappala, Cj, Groshong, Sd, Leslie, Ko, Myers, Jl, Padera, Rf, Desai, Sr, Goldin, J, Kazerooni, Ea, Klein, Js, and Keen, Kj

Subjects
Male, medicine.medical_specialty, Delphi Technique, Consensus Development Conferences as Topic, Health Personnel, Immunology, Context (language use), Disease, Severity of Illness Index, Article, Idiopathic pulmonary fibrosis, Rheumatology, medicine, Immunology and Allergy, Humans, Disease management (health), Intensive care medicine, Connective Tissue Diseases, Randomized Controlled Trials as Topic, business.industry, Interstitial lung disease, Disease Management, respiratory system, Focus Groups, medicine.disease, Comorbidity, Connective tissue disease, respiratory tract diseases, Clinical trial, Treatment Outcome, Patient Satisfaction, Physical therapy, Quality of Life, ÍNDICE DE GRAVIDADE DA DOENÇA, Interdisciplinary Communication, business, Lung Diseases, Interstitial
Abstract

Interstitial lung diseases (ILD), including those related to connective tissue disease (CTD), and idiopathic pulmonary fibrosis (IPF) carry high morbidity and mortality. Great efforts are under way to develop and investigate meaningful treatments in the context of clinical trials. However, efforts have been challenged by a lack of validated outcome measures and by inconsistent use of measures in clinical trials. Lack of consensus has fragmented effective use of strategies in CTD-ILD and IPF, with a history of resultant difficulties in obtaining agency approval of treatment interventions. Until recently, the patient perspective to determine domains and outcome measures in CTD-ILD and IPF had never been applied. Efforts described here demonstrate unequivocally the value and influence of patient involvement on core set development. Regarding CTD-ILD, this is the first OMERACT working group to directly address a manifestation/comorbidity of a rheumatic disease (ILD) as well as a disease not considered rheumatic (IPF). The OMERACT 11 proceedings of the CTD-ILD Working Group describe the forward and lateral process to include both the medical and patient perspectives in the urgently needed identification of a core set of preliminary domains and outcome measures in CTD-ILD and IPF.

Published
2014

4. Exposure to ACE inhibitors prior to the onset of scleroderma renal crisis-results from the international scleroderma renal crisis survey

Author

Hudson, M. Baron, M. Tatibouet, S. Furst, D.E. Khanna, D. Hummers, L. Hachulla, E. Medsger, T. Steen, V. Alkassab, F. Johnson, S. Midtvedt, O. Szucs, G. Schiopu, E. Carreira, P.E. Derk, C.T. Distler, O. Inanc, M. Khalidi, N. Mahmud, T.H. Mayes, M.D. McKown, K. Proudman, S. Rudnicka, L. Seigel, S. Stein, J. Valentini, G. Yavuz, S. Arbillaga, H. Hazel, B. Schulz, J. Baker, M. Becker, M. Cabane, J. Chow, A. Christmann, R. Clements, P. Csuka, M.E. Hanke, K. Kötter, I. Jacobsen, S. Kur, J. Lally, E.V. Ligier, S. Mittoo, S. Peschken, C. De La Pena-Lefebvre, P.G. Queyrel, V. Silver, R. Simms, R. Sondergaard, K. Troyanov, Y. Turi, M.C. Varga, J. Vlachoyiannopoulos, P.G. Voskuyl, A.E. Yeadon, C. Westhovens, R.

Abstract

Objective: To determine whether exposure to angiotensin-converting enzyme (ACE) inhibitors prior to the onset of scleroderma renal crisis (SRC) leads to worse outcomes of SRC. Methods: Prospective cohort study of incident SRC subjects. The exposure of interest was ACE inhibitors prior to the onset of SRC. The outcomes of interest were death or dialysis during the first year after the onset of SRC. Results: A total of 87 subjects with incident SRC were identified and 1-year follow-up data were obtained in 75 (86%) subjects. Overall, 27 (36%) subjects died within the first year and an additional 19 (25%) remained on dialysis 1 year after the onset of SRC. In adjusted analyses, exposure to ACE inhibitors prior to the onset of SRC was associated with an increased risk of death (hazard ratio 2.42, 95% CI 1.02, 5.75, p < 0.05 in the primary analysis and 2.17, 95% CI 0.88, 5.33, p = 0.09 after post-hoc adjustment for pre-existing hypertension). Conclusion: Overall, the 1-year outcomes of SRC were poor. Prior exposure to ACE inhibitors was associated with an increased risk of death after the onset of SRC, although there was uncertainty around the magnitude of the risk and the possibility of residual confounding could not be ruled out. Further studies will be needed to confirm these findings. © 2014 Elsevier Inc.

Published
2014

5. Connective tissue disease related interstitial lung diseases and idiopathic pulmonary fibrosis: Provisional core sets of domains and instruments for use in clinical trials

Author

Saketkoo, La, Mittoo, S, Huscher, D, Khanna, D, Dellaripa, Pf, Distler, O, Flaherty, Kr, Frankel, S, Oddis, Cv, Denton, Cp, Fischer, A, Kowal Bielecka OM, Lesage, D, Merkel, Pa, Phillips, K, Pittrow, D, Swigris, J, Antoniou, K, Baughman, Rp, Castelino, Fv, Christmann, Rb, Christopher Stine, L, Collard, Hr, Cottin, V, Danoff, S, Highland, Kb, Hummers, L, Shah, Aa, Kim, Ds, Lynch, Da, Miller, Fw, Proudman, Sm, Richeldi, L, Ryu, Jh, Sandorfi, N, Sarver, C, Wells, Au, Strand, V, Matteson, El, Brown, Kk, Seibold, Jr, Aggarwal, R, Ainslie, G, Alkassab, F, Allanore, Y, Descartes, P, Anderson, Me, Andonopoulos, Ap, Antin Ozerkis, D, Arrobas, A, Ascherman, Dp, Assassi, S, Baron, M, Bathon, Jm, Behr, J, Beretta, L, Bingham, Co, Binnie, M, Birring, Ss, Boin, F, Bongartz, T, Bourdin, A, Bouros, D, Brasington, R, Bresser, P, Buch, Mh, Burge, Ps, Carmona, L, Carreira, Pe, Carvalho, Cr, Catoggio, Lj, Chan, Km, Chapman, J, Chatterjee, S, Chua, F, Chung, L, Conron, M, Corte, T, Cosgrove, G, Costabel, U, Cox, G, Crestani, B, Crofford, Lj, Csuka, Me, Curbelo, P, László, C, Daniil, Z, D'Arsigny, Cl, Davis, Gs, de Andrade JA, De Vuyst, P, Dempsey, Oj, Derk, Ct, Distler, J, Dixon, Wg, Downey, G, Doyle, Mk, Drent, M, Durairaj, L, Emery, P, Espinoza, Lr, Farge, D, Fathi, M, Fell, Cd, Fessler, Bj, Fitzgerald, Je, Fox, Ga, Foeldvari, I, Frech, Tm, Freitas, S, Furst, De, Gabrielli, A, García Vicuña, R, Georgiev, Ob, Gerbino, A, Gillisen, A, Gladman, Dd, Glassberg, M, Gochuico, Br, Gogali, A, Goh, Ns, Goldberg, A, Goldberg, Hj, Gourley, Mf, Griffing, L, Grutters, Jc, Gunnarsson, R, Hachulla, E, Hall, Fc, Harari, S, Herrick, Al, Herzog, El, Hesselstrand, R, Hirani, N, Hodgson, U, Hollingsworth, Hm, Homer, Rj, Hoyles, Rk, Hsu, Vm, Hubbard, Rb, Hunzelmann, N, Isasi, Me, Isasi, Es, Jacobsen, S, Jimenez, Sa, Johnson, Sr, Jones, Ch, Kahaleh, B, Kairalla, Ra, Kalluri, M, Kalra, S, Kaner, Rj, Kinder, Bw, Klingsberg, Rc, Kokosi, M, Kolb, Mr, Kur Zalewska, J, Kuwana, M, Lake, Fr, Lally, Ev, Lasky, Ja, Laurindo, Im, Able, L, Lee, P, Leonard, Ct, Lien, Dc, Limper, Ah, Liossis, Sn, Lohr, Km, Loyd, Je, Lundberg, Ie, Mageto, Yn, Maher, Tm, Mahmud, Th, Manganas, H, Marie, I, Marras, Tk, Antônio Baddini Martinez, J, Martinez, Fj, Mathieu, A, Matucci Cerinic, M, Mayes, Md, Mckown, Km, Medsger, Ta, Meehan, Rt, Cristina, Ma, Meyer, Kc, Millar, Ab, Moğulkoc, N, Molitor, Ja, Morais, A, Luc Mouthon, P, Müller, V, Müller Quernheim, J, Nadashkevich, O, Nador, R, Nash, P, Nathan, Sd, Navarro, C, Neves, S, Noth, I, Nunes, H, Olson, Al, Opitz, Cf, Padilla, M, Pappas, D, Parfrey, H, Pego Reigosa JM, Pereira, Ca, Perez, R, Pope, Je, Porter, Jc, Renzoni, Ea, Riemekasten, G, Riley, Dj, Rischmueller, M, Rodriguez Reyna TS, Rojas, Serrano, Roman, J, Rosen, Gd, Rossman, M, Rothfield, N, Sahn, Sa, Sanduzzi, A, Scholand, Mb, Selman, M, Senécal, Jl, Seo, P, Silver, Rm, Solomon, Jj, Steen, V, Stevens, W, Strange, C, Sussman, R, Sutton, Ed, Sweiss, Nj, Tornling, G, Tzelepis, Ge, Undurraga, A, Vacca, A, Vancheri, Carlo, Varga, J, Veale, Dj, Volkov, S, Walker, Ua, Wencel, M, Wesselius, Lj, Wickremasinghe, M, Wilcox, P, Wilsher, Ml, Wollheim, Fa, Wuyts, Wa, Yung, G, Zanon, P, Zappala, Cj, Groshong, Sd, Leslie, Ko, Myers, Jl, Padera, Rf, Desai, Sr, Goldin, J, Kazerooni, Ea, Klein, Js, Cenac, Sl, Grewal, Hk, Christensen, Am, Ferguson, S, Tran, M, Keen, K. J., Costabel, Ulrich (Beitragende*r), Raynauds & Scleroderma Association, Arthritis Research UK, The Scleroderma Society, and British Lung Foundation

Subjects
Lung Diseases, Connective tissue disease associated lung disease, CTD-ILD Special Interest Group, International Cooperation, Respiratory System, Medizin, Rheumatoid lung disease, Idiopathic pulmonary fibrosis, Quality of life, QUALITY-OF-LIFE, CYCLOPHOSPHAMIDE, SCLERODERMA LUNG, Registries, Connective Tissue Diseases, Societies, Medical, Randomized Controlled Trials as Topic, Interstitial lung disease, respiratory system, Connective tissue disease, Interstitial Fibrosis, medicine.anatomical_structure, Life Sciences & Biomedicine, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Consensus, Clinical Sciences, END-POINT, Interstitial Lung Disease, Systemic disease and lungs, Medical, medicine, Humans, ENSAIO CLÍNICO CONTROLADO RANDOMIZADO, VALIDITY, Intensive care medicine, Lung, Science & Technology, COUGH, business.industry, Clinical study design, MORTALITY, SYSTEMIC-SCLEROSIS, 1103 Clinical Sciences, Congresses as Topic, medicine.disease, GEORGES RESPIRATORY QUESTIONNAIRE, respiratory tract diseases, Clinical trial, IPF, Physical therapy, Interstitial, Societies, business, Lung Diseases, Interstitial
Abstract

Rationale: Clinical trial design in interstitial lung diseases (ILDs) has been hampered by lack of consensus on appropriate outcome measures for reliably assessing treatment response. In the setting of connective tissue diseases (CTDs), some measures of ILD disease activity and severity may be confounded by non-pulmonary comorbidities. Methods: The Connective Tissue Disease associated Interstitial Lung Disease (CTD-ILD) working group of Outcome Measures in Rheumatology-a non-profit international organisation dedicated to consensus methodology in identification of outcome measures-conducted a series of investigations which included a Delphi process including >248 ILD medical experts as well as patient focus groups culminating in a nominal group panel of ILD experts and patients. The goal was to define and develop a consensus on the status of outcome measure candidates for use in randomised controlled trials in CTD-ILD and idiopathic pulmonary fibrosis (IPF). Results: A core set comprising specific measures in the domains of lung physiology, lung imaging, survival, dyspnoea, cough and health-related quality of life is proposed as appropriate for consideration for use in a hypothetical 1-year multicentre clinical trial for either CTD-ILD or IPF. As many widely used instruments were found to lack full validation, an agenda for future research is proposed. Conclusion: Identification of consensus preliminary domains and instruments to measure them was attained and is a major advance anticipated to facilitate multicentre RCTs in the field.

Published
2014
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7. Utility of B-type natriuretic peptides in the assessment of patients with systemic sclerosis-associated pulmonary hypertension in the PHAROS registry.

Author

Chung L, Fairchild RM, Furst DE, Li S, Alkassab F, Bolster MB, Csuka ME, Derk CT, Domsic RT, Fischer A, Frech TM, Gomberg-Maitland M, Gordon JK, Hinchcliff M, Hsu V, Hummers LK, Khanna D, Medsger TAJ, Molitor JA, Preston IR, Schiopu E, Shapiro L, Hant F, Silver R, Simms R, Varga J, Steen VD, and Zamanian RT

Subjects
Aged, Disease Progression, Female, Hemodynamics, Humans, Hypertension, Pulmonary blood, Hypertension, Pulmonary physiopathology, Male, Middle Aged, Peptide Fragments blood, Prospective Studies, Registries, Scleroderma, Systemic blood, Hypertension, Pulmonary diagnosis, Natriuretic Peptide, Brain blood, Scleroderma, Systemic complications
Abstract

Objectives: To assess the utility of B-type natriuretic peptide (BNP) and N-terminal pro-BNP (NT-proBNP) in detecting and monitoring pulmonary hypertension (PH) in systemic sclerosis (SSc)., Methods: PHAROS is a multicenter prospective cohort of SSc patients at high risk for developing pulmonary arterial hypertension (SSc-AR-PAH) or with a definitive diagnosis of SSc-PH. We evaluated 1) the sensitivity and specificity of BNP≥64 and NT-proBNP≥210 pg/mL for the detection of SSc-PAH and/ or SSc-PH in the SSc-AR-PAH population; 2) baseline and longitudinal BNP and NT-proBNP levels as predictors of progression to SSc-PAH and/or SSc-PH; 3) baseline BNP≥180, NT-proBNP≥553 pg/mL, and longitudinal changes in BNP and NT-proBNP as predictors of mortality in SSc-PH diagnosed patients., Results: 172 SSc-PH and 157 SSc-AR- PAH patients had natriuretic peptide levels available. Median BNP and NT-proBNP were significantly higher in the SSc-PH versus SSc-AR-PAH group. The sensitivity and specificity for SSc-PAH detection using baseline BNP≥64 pg/mL was 71% and 59%; and for NT-proBNP≥210 pg/mL, 73% and 78%. NT-proBNP showed stronger correlations with haemodynamic indicators of right ventricular dysfunction than BNP. Baseline creatinine, RVSP > 40 mmHg, and FVC%:DLco% ratio ≥1.8 were associated with progression from SSc-AR-PAH to SSc-PH but no association with individual or combined baseline BNP and NT-proBNP levels was observed. Baseline and follow-up BNP or NT-proBNP levels were not predictive of death, however, a composite BNP/NT-proBNP group predicted mortality (HR 3.81 (2.08-6.99), p<.0001)., Conclusions: NT-proBNP may be more useful than BNP in the detection and monitoring of PAH in SSc patients, but additional studies are necessary.

Published
2017

8. Survival and predictors of mortality in systemic sclerosis-associated pulmonary arterial hypertension: outcomes from the pulmonary hypertension assessment and recognition of outcomes in scleroderma registry.

Author

Chung L, Domsic RT, Lingala B, Alkassab F, Bolster M, Csuka ME, Derk C, Fischer A, Frech T, Furst DE, Gomberg-Maitland M, Hinchcliff M, Hsu V, Hummers LK, Khanna D, Medsger TA Jr, Molitor JA, Preston IR, Schiopu E, Shapiro L, Silver R, Simms R, Varga J, Gordon JK, and Steen VD

Subjects
Aged, Familial Primary Pulmonary Hypertension, Female, Humans, Hypertension, Pulmonary drug therapy, Hypertension, Pulmonary etiology, Longitudinal Studies, Male, Middle Aged, Prospective Studies, United States epidemiology, Hypertension, Pulmonary mortality, Registries, Scleroderma, Systemic complications
Abstract

Objective: To assess cumulative survival rates and identify independent predictors of mortality in patients with incident systemic sclerosis (SSc)-associated pulmonary arterial hypertension (PAH) who had undergone routine screening for PAH at SSc centers in the US., Methods: The Pulmonary Hypertension Assessment and Recognition of Outcomes in Scleroderma registry is a prospective registry of SSc patients at high risk for PAH or with definite pulmonary hypertension diagnosed by right-sided heart catheterization within 6 months of enrollment. Only patients with World Health Organization group I PAH (mean pulmonary artery pressure >25 mm Hg and pulmonary capillary wedge pressure <15 mm Hg without significant interstitial lung disease) were included in these analyses., Results: In total, 131 SSc patients with incident PAH were followed for a mean ± SD of 2.0 ± 1.4 years. The 1-, 2-, and 3-year cumulative survival rates were 93%, 88%, and 75%, respectively. On multivariate analysis, age >60 years (hazard ratio [HR] 3.0, 95% confidence interval [95% CI] 1.1- 8.4), male sex (HR 3.9, 95% CI 1.1-13.9), functional class (FC) IV status (HR 6.5, 95% CI 1.8 -22.8), and diffusing capacity for carbon monoxide (DLCO) <39% predicted (HR 4.2, 95% CI 1.3-13.8) were significant predictors of mortality., Conclusion: This is the largest study describing survival in patients with incident SSc-associated PAH followed up at multiple SSc centers in the US who had undergone routine screening for PAH. The survival rates were better than those reported in other recently described SSc-associated PAH cohorts. Severely reduced DLCO and FC IV status at the time of PAH diagnosis portended a poor prognosis in these patients.

Published
2014
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9. Immunochip analysis identifies multiple susceptibility loci for systemic sclerosis.

Author

Mayes MD, Bossini-Castillo L, Gorlova O, Martin JE, Zhou X, Chen WV, Assassi S, Ying J, Tan FK, Arnett FC, Reveille JD, Guerra S, Teruel M, Carmona FD, Gregersen PK, Lee AT, López-Isac E, Ochoa E, Carreira P, Simeón CP, Castellví I, González-Gay MÁ, Zhernakova A, Padyukov L, Alarcón-Riquelme M, Wijmenga C, Brown M, Beretta L, Riemekasten G, Witte T, Hunzelmann N, Kreuter A, Distler JH, Voskuyl AE, Schuerwegh AJ, Hesselstrand R, Nordin A, Airó P, Lunardi C, Shiels P, van Laar JM, Herrick A, Worthington J, Denton C, Wigley FM, Hummers LK, Varga J, Hinchcliff ME, Baron M, Hudson M, Pope JE, Furst DE, Khanna D, Phillips K, Schiopu E, Segal BM, Molitor JA, Silver RM, Steen VD, Simms RW, Lafyatis RA, Fessler BJ, Frech TM, Alkassab F, Docherty P, Kaminska E, Khalidi N, Jones HN, Markland J, Robinson D, Broen J, Radstake TR, Fonseca C, Koeleman BP, and Martin J

Subjects
Alleles, Autophagy-Related Protein 5, Carrier Proteins genetics, Case-Control Studies, DEAD-box RNA Helicases genetics, Endodeoxyribonucleases genetics, Female, Genome-Wide Association Study, Genotype, HLA Antigens genetics, Humans, Interleukin-12 Subunit p35 genetics, Linkage Disequilibrium, Logistic Models, Male, Microchip Analytical Procedures, Microtubule-Associated Proteins genetics, Polymorphism, Single Nucleotide, Proto-Oncogene Proteins genetics, Risk Factors, White People genetics, Chromosomes, Human, Pair 11 genetics, Chromosomes, Human, Pair 3 genetics, Genetic Loci, Genetic Predisposition to Disease, Scleroderma, Systemic genetics
Abstract

In this study, 1,833 systemic sclerosis (SSc) cases and 3,466 controls were genotyped with the Immunochip array. Classical alleles, amino acid residues, and SNPs across the human leukocyte antigen (HLA) region were imputed and tested. These analyses resulted in a model composed of six polymorphic amino acid positions and seven SNPs that explained the observed significant associations in the region. In addition, a replication step comprising 4,017 SSc cases and 5,935 controls was carried out for several selected non-HLA variants, reaching a total of 5,850 cases and 9,401 controls of European ancestry. Following this strategy, we identified and validated three SSc risk loci, including DNASE1L3 at 3p14, the SCHIP1-IL12A locus at 3q25, and ATG5 at 6q21, as well as a suggested association of the TREH-DDX6 locus at 11q23. The associations of several previously reported SSc risk loci were validated and further refined, and the observed peak of association in PXK was related to DNASE1L3. Our study has increased the number of known genetic associations with SSc, provided further insight into the pleiotropic effects of shared autoimmune risk factors, and highlighted the power of dense mapping for detecting previously overlooked susceptibility loci., (Copyright © 2014 The American Society of Human Genetics. Published by Elsevier Inc. All rights reserved.)

Published
2014
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