Reductions in radiographic progression in early RA over 25-years: changing contribution from RF in 2 multi-centre UK inception cohorts

Carpenter, Lewis and Norton, Sam and Nikiphorou, Elena and Jayakumar, Keeranur and McWilliams, Daniel F. and Rennie, Kirsten L. and Dixey, Josh and Kiely, Patrick D.W. and Walsh, David A. and Young, Adam (2017) Reductions in radiographic progression in early RA over 25-years: changing contribution from RF in 2 multi-centre UK inception cohorts. Arthritis Care & Research . ISSN 2151-4658 (In Press)

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Abstract

Objectives: To assess 5-year progression of erosions and Joint Space Narrowing (JSN), and their associations with RF status in two large, multi-centre early-RA cohorts spanning 25-years.

Methods: Radiographic joint damage was recorded using the Sharp/van der Heijde (SvdH) method in the Early RA Study (ERAS) 1986-2001, and the Early RA Network (ERAN) 2002-2013. Mixed-effects negative-binomial regression estimated changes in radiographic damage over 5-years, including erosions and JSN separately. Rheumatoid Factor (RF), along with age, sex and baseline markers of disease activity were controlled for.

Results: 1,216 patients from ERAS and 446 from ERAN had radiographic data. Compared to ERAS, ERAN patients had a lower mean total SvdH score at baseline (ERAN=6.2 vs. ERAS=10.5, p<0.001), and mean annual rate of change (ERAN=2.5 vs. ERAS=6.9 per year, p<0.001). 74% of ERAS and 27% of ERAN patients progressed ≥5 units. Lower scores at baseline in ERAN were largely driven by reductions in JSN (ERAS=3.9 vs. ERAN=1.2, p<0.001), along with erosions (ERAS=1.9 vs. ERAN=0.8, p<0.001). RF was associated with greater progression in each cohort, but the absolute difference in mean annual rate of change for RF positive patients was substantially higher for ERAS (RF+= 8.6 vs. RF-= 5.1, p<0.001), relative to ERAN (RF+= 2.0 vs. RF-= 1.9, p=0.855).

Conclusion: Radiographic progression has significantly reduced between the two cohorts, associated with lower baseline damage and other factors, including changes in early DMARD use. The impact of RF status as a prognostic marker of clinically meaningful change in radiographic progression has markedly diminished in the context of more modern treatment. This article is protected by copyright. All rights reserved.

Item Type: Article
Additional Information: This is the peer reviewed version of the following article: eductions in radiographic progression in early RA over 25-years: Changing contribution from RF in 2 multi-centre UK inception cohorts / Lewis Carpenter, Sam Norton, Elena Nikiphorou, Keeranur Jayakumar, Daniel F McWilliams, Kirsten L Rennie, Josh Dixey, Patrick Kiely, David Andrew Walsh, Adam Young MD and on behalf of ERAS & ERAN, which has been published in final form at [http:dx.doi.org/10.1002/acr.23217. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Schools/Departments: University of Nottingham, UK > Faculty of Medicine and Health Sciences > School of Medicine > Division of Rheumatology, Orthopaedics and Dermatology
Identification Number: 10.1002/acr.23217
Depositing User: McWilliams, Daniel
Date Deposited: 20 Mar 2017 11:32
Last Modified: 20 Mar 2017 11:35
URI: http://eprints.nottingham.ac.uk/id/eprint/41376

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