title: Serum 14-3-3η is a novel marker that complements current serological measurements to enhance detection of patients with rheumatoid arthritis.
abstract: OBJECTIVE
  Serum 14-3-3η is a novel joint-derived proinflammatory mediator implicated in the pathogenesis of rheumatoid arthritis (RA). In our study, we assessed the diagnostic utility of 14-3-3η and its association with standard clinical and serological measures.
  
  
  METHODS
  A quantitative ELISA was used to assess 14-3-3η levels. Early (n=99) and established patients with RA (n=135) were compared to all controls (n=385), including healthy subjects (n=189). The sensitivity, specificity, positive and negative predictive values of 14-3-3η, and the likelihood ratios (LR) for RA were determined through receiver-operator curve analysis. The incremental value of adding 14-3-3η to anticitrullinated protein antibody (ACPA) and rheumatoid factor (RF) in diagnosing early and established RA was assessed.
  
  
  RESULTS
  Serum 14-3-3η differentiated established patients with RA from healthy individuals and all controls (p<0.0001). A serum 14-3-3η cutoff of ≥0.19 ng/ml delivered a sensitivity and specificity of 77% and 93%, respectively, with corresponding LR positivity of 10.4. At this cutoff in early RA, 64% of patients with early RA were positive for 14-3-3η, with a corresponding specificity of 93% (LR+ of 8.6), while 59% and 57% were positive for ACPA or RF, respectively. When ACPA, RF, and 14-3-3η positivity were used in combination, 77 of the 99 patients (78%) with early RA were positive for any 1 of the 3 markers. Serum 14-3-3η did not correlate with C-reactive protein, erythrocyte sedimentation rate, or Disease Activity Score, but patients who were 14-3-3η-positive had significantly worse disease.
  
  
  CONCLUSIONS
  Serum 14-3-3η is a novel RA mechanistic marker that is highly specific, associated with worse disease, and complements current markers, enabling a more accurate diagnosis of RA.
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp. walter.maksymowych@ualberta.ca.
authors.forename: Walter P
authors.initials: WP
authors.lastname: Maksymowych
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Stanley J
authors.initials: SJ
authors.lastname: Naides
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Vivian
authors.initials: V
authors.lastname: Bykerk
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Katherine A
authors.initials: KA
authors.lastname: Siminovitch
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Dirkjan
authors.initials: D
authors.lastname: van Schaardenburg
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Maarten
authors.initials: M
authors.lastname: Boers
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Robert
authors.initials: R
authors.lastname: Landewé
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Désirée
authors.initials: D
authors.lastname: van der Heijde
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Paul-P
authors.initials: PP
authors.lastname: Tak
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Mark C
authors.initials: MC
authors.lastname: Genovese
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Weinblatt
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Edward C
authors.initials: EC
authors.lastname: Keystone
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Olga S
authors.initials: OS
authors.lastname: Zhukov
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Rania W
authors.initials: RW
authors.lastname: Abolhosn
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Joanna M
authors.initials: JM
authors.lastname: Popov
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Karin
authors.initials: K
authors.lastname: Britsemmer
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Arno W
authors.initials: AW
authors.lastname: van Kuijk
authors.affiliation: From the University of Alberta, Edmonton, Alberta; Augurex Life Sciences Corp., North Vancouver, British Columbia; Mount Sinai Hospital, Toronto, Ontario, Canada; Quest Diagnostics Nichols Institute, San Juan Capistrano; Stanford University Medical Center, Palo Alto, California; Hospital for Special Surgery, New York, New York; Brigham and Women's Hospital, Boston, Massachusetts, USA; Vrije Universiteit University Medical Center; Academic Medical Center/University of Amsterdam; Jan van Breemen Research Institute, Reade organization, Amsterdam; the Department of Rheumatology, Leiden University Medical Center, Leiden, the Netherlands; University of Cambridge, Cambridge; GlaxoSmithKline, Stevenage, UK.W.P. Maksymowych, MD, Professor of Medicine, University of Alberta; S.J. Naides, MD, Quest Diagnostics Nichols Institute; V. Bykerk, MD, Hospital for Special Surgery; K.A. Siminovitch, MD, Mount Sinai Hospital; D. van Schaardenburg, MD, Jan van Breemen Research Institute; M. Boers, MD, Vrije Universiteit University Medical Center; R. Landewé, MD, Academic Medical Center/University of Amsterdam; D. van der Heijde, MD, Department of Rheumatology, Leiden University Medical Center; P-P. Tak, MD, Academic Medical Center/University of Amsterdam, University of Cambridge, GlaxoSmithKline; M.C. Genovese, MD, Stanford University Medical Center; M.E. Weinblatt, MD, Brigham and Women's Hospital; E.C. Keystone, MD, Mount Sinai Hospital; O.S. Zhukov, MS; R.W. Abolhosn, BS; J.M. Popov, MD, PhD, Quest Diagnostics Nichols Institute; K. Britsemmer, MD, Jan van Breemen Research Institute; A.W. van Kuijk, MD, Academic Medical Center/University of Amsterdam; A. Marotta, PhD, Augurex Life Sciences Corp.
authors.forename: Anthony
authors.initials: A
authors.lastname: Marotta
mesh_terms: D048948:14-3-3 Proteins / Q000097:blood*; D000328:Adult; D019540:Area Under Curve; D001172:Arthritis, Rheumatoid / Q000097:blood* / Q000503:physiopathology*; D015415:Biomarkers / Q000097:blood; D002170:Canada; D016022:Case-Control Studies; D015331:Cohort Studies; D018450:Disease Progression; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D011379:Prognosis; D012372:ROC Curve; D012016:Reference Values; D012217:Rheumatoid Factor / Q000097:blood; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D018709:Statistics, Nonparametric
chemical_list: D048948:14-3-3 Proteins; D015415:Biomarkers; D012217:Rheumatoid Factor
keywords: ANTICITRULLINATED PROTEIN ANTIBODIES; BIOMARKER; C-REACTIVE PROTEIN; RHEUMATOID ARTHRITIS; RHEUMATOID FACTOR; SERUM 14-3-3η