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Lookup NU author(s): Professor John IsaacsORCiD
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Objective. Non-adherence to DMARDs is common, but little is known about adherence to biologic therapies and its relationship to treatment response. The purpose of this study was to investigate the association between self-reported non-adherence to s.c. anti-TNF therapy and response in individuals with RA.Methods. Participants about to start s.c. anti-TNF therapy were recruited to a large UK multicentre prospective observational cohort study. Demographic information and disease characteristics were assessed at baseline. Self-reported non-adherence, defined as whether the previous due dose of biologic therapy was reported as not taken on the day agreed with the health care professional, was recorded at 3 and 6 months following the start of therapy. The 28-joint DAS (DAS28) was recorded at baseline and following 3 and 6 months of therapy. Multivariate linear regression was used to examine these relationships.Results. Three hundred and ninety-two patients with a median disease duration of 7 years [interquartile range (IQR) 3-15] were recruited. Adherence data were available in 286 patients. Of these, 27% reported non-adherence to biologic therapy according to the defined criteria at least once within the first 6-month period. In multivariate linear regression analysis, older age, lower baseline DAS28 and ever non-adherence at either 3 or 6 months from baseline were significantly associated with a poorer DAS28 response at 6 months to anti-TNF therapy.Conclusion. Patients with RA who reported not taking their biologic on the day agreed with their health care professional showed poorer clinical outcomes than their counterparts, emphasizing the need to investigate causes of non-adherence to biologics.
Author(s): Bluett J, Morgan C, Thurston L, Plant D, Hyrich KL, Morgan AW, Wilson AG, Isaacs JD, Cordingley L, Barton A, BRAGGSS
Publication type: Article
Publication status: Published
Journal: Rheumatology
Year: 2015
Volume: 54
Issue: 3
Pages: 494-499
Print publication date: 01/03/2015
Online publication date: 10/09/2014
Acceptance date: 08/07/2014
ISSN (print): 1462-0324
ISSN (electronic): 1462-0332
Publisher: Oxford University Press
URL: http://dx.doi.org/10.1093/rheumatology/keu358
DOI: 10.1093/rheumatology/keu358
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