Laura C Coates1,2, Ennio Lubrano1,2, Fabio Massimo Perrotta1,2, Paul Emery1,2, Philip G Conaghan1,2, Philip S Helliwell3,4. 1. From the Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals National Health Service (NHS) Trust, Leeds; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise, Campobasso, Italy. 2. L.C. Coates, MBChB, MRCP ( UK), PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust, and Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; E. Lubrano, MD, PhD, Associate Professor of Rheumatology and Consultant Rheumatologist, Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise; F.M. Perrotta, MD, Clinical Research Fellow, Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise; P. Emery, MA, MD, FRCP, FRCPE, Professor of Rheumatology, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust; P.G. Conaghan, MB BS, PhD, FRACP, FRCP, Professor of Musculoskeletal Medicine, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust; P.S. Helliwell, MA, MD, Senior Lecturer, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust. 3. From the Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds; Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals National Health Service (NHS) Trust, Leeds; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise, Campobasso, Italy. p.helliwell@leeds.ac.uk. 4. L.C. Coates, MBChB, MRCP ( UK), PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust, and Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; E. Lubrano, MD, PhD, Associate Professor of Rheumatology and Consultant Rheumatologist, Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise; F.M. Perrotta, MD, Clinical Research Fellow, Dipartimento di Medicina e Scienze della Salute "Vincenzo Tiberio," Università degli Studi del Molise; P. Emery, MA, MD, FRCP, FRCPE, Professor of Rheumatology, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust; P.G. Conaghan, MB BS, PhD, FRACP, FRCP, Professor of Musculoskeletal Medicine, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust; P.S. Helliwell, MA, MD, Senior Lecturer, PhD, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust. p.helliwell@leeds.ac.uk.
Abstract
OBJECTIVE: Recommendations regarding "treat to target" in psoriatic arthritis (PsA) have stated that the target should be remission or inactive disease. Potential definitions include very low disease activity (VLDA), PsA Disease Activity Score (PASDAS) near remission, Disease Activity Index for PsA (DAPSA) or clinical DAPSA (cDAPSA) remission. Our aim was to investigate the proportion of patients who fulfill these definitions and how much residual active disease remained. METHODS: This analysis used 2 datasets: first, trial data from the Tight Control of PsA (TICOPA) study, which included 206 patients with recent-onset (< 2 yrs) PsA receiving standard and biological disease-modifying antirheumatic drugs (DMARD); and second, an observational clinical dataset from Italy of patients receiving biological DMARD. Proportions achieving each of the 4 potential targets were calculated in each dataset and comparisons between treatment groups were performed in the TICOPA dataset. Levels of residual disease were established for key clinical domains of PsA. RESULTS: All measures could differentiate the TICOPA trial treatment groups (p < 0.03). Lower proportions of patients fulfilled the VLDA criteria compared to DAPSA or cDAPSA remission. PASDAS results were different between the cohorts. Residual active disease was low across all definitions although higher levels were seen in DAPSA and cDAPSA compared to VLDA, particularly for psoriasis. In all measures, the proportion with elevated C-reactive protein was similar and low. CONCLUSION: VLDA appears the most stringent measure. It ensures that significant active arthritis, enthesitis, and psoriasis are not present, in contrast with DAPSA and PASDAS, in which composite scores can "hide" active disease in some domains.
OBJECTIVE: Recommendations regarding "treat to target" in psoriatic arthritis (PsA) have stated that the target should be remission or inactive disease. Potential definitions include very low disease activity (VLDA), PsA Disease Activity Score (PASDAS) near remission, Disease Activity Index for PsA (DAPSA) or clinical DAPSA (cDAPSA) remission. Our aim was to investigate the proportion of patients who fulfill these definitions and how much residual active disease remained. METHODS: This analysis used 2 datasets: first, trial data from the Tight Control of PsA (TICOPA) study, which included 206 patients with recent-onset (< 2 yrs) PsA receiving standard and biological disease-modifying antirheumatic drugs (DMARD); and second, an observational clinical dataset from Italy of patients receiving biological DMARD. Proportions achieving each of the 4 potential targets were calculated in each dataset and comparisons between treatment groups were performed in the TICOPA dataset. Levels of residual disease were established for key clinical domains of PsA. RESULTS: All measures could differentiate the TICOPA trial treatment groups (p < 0.03). Lower proportions of patients fulfilled the VLDA criteria compared to DAPSA or cDAPSA remission. PASDAS results were different between the cohorts. Residual active disease was low across all definitions although higher levels were seen in DAPSA and cDAPSA compared to VLDA, particularly for psoriasis. In all measures, the proportion with elevated C-reactive protein was similar and low. CONCLUSION: VLDA appears the most stringent measure. It ensures that significant active arthritis, enthesitis, and psoriasis are not present, in contrast with DAPSA and PASDAS, in which composite scores can "hide" active disease in some domains.
Entities:
Keywords:
OUTCOME MEASURES; PSORIATIC ARTHRITIS; TREAT TO TARGET
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