Arthritis prevention in the pre-clinical phase of RA with abatacept (the APIPPRA study): a multi-centre, randomised, double-blind, parallel-group, placebo-controlled clinical trial protocol

Al-Laith, M. et al. (2019) Arthritis prevention in the pre-clinical phase of RA with abatacept (the APIPPRA study): a multi-centre, randomised, double-blind, parallel-group, placebo-controlled clinical trial protocol. Trials, 20(1), 429. (doi: 10.1186/s13063-019-3403-7) (PMID:31307535) (PMCID:PMC6633323)

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Trial design: We present a study protocol for a multi-centre, randomised, double-blind, parallel-group, placebo-controlled trial that seeks to test the feasibility, acceptability and effectiveness of a 52-week period of treatment with the first-in-class co-stimulatory blocker abatacept for preventing or delaying the onset of inflammatory arthritis. Methods: The study aimed to recruit 206 male or female subjects from the secondary care hospital setting across the UK and the Netherlands. Participants who were at least 18 years old, who reported inflammatory sounding joint pain (clinically suspicious arthralgia) and who were found to be positive for serum autoantibodies associated with rheumatoid arthritis (RA) were eligible for enrolment. All study subjects were randomly assigned to receive weekly injections of investigational medicinal product, either abatacept or placebo treatment over the course of a 52-week period. Participants were followed up for a further 52 weeks. The primary endpoint was defined as the time to development of at least three swollen joints or to the fulfilment of the 2010 American College of Rheumatology/European League Against Rheumatism (ACR/EULAR) classification criteria for RA using swollen but not tender joints, whichever endpoint was met first. In either case, swollen joints were confirmed by ultrasonography. Participants, care givers, and those assessing the outcomes were all blinded to group assignment. Clinical assessors and ultrasonographers were also blinded to each other’s assessments for the duration of the study. Conclusions: There is limited experience of the design and implementation of trials for the prevention of inflammatory joint diseases. We discuss the rationale behind choice and duration of treatment and the challenges associated with defining the “at risk” state and offer pragmatic solutions in the protocol to enrolling subjects at risk of RA.

Item Type:Articles
Additional Information:The APIPPRA study is funded through an IMI101–328 Immunoscience Investigator research grant awarded to King’s College London by Bristol-Myers Squibb.
Keywords:Abatacept, antibodies to citrullinated protein antigens, at risk, autoantibodies, double-blind, intervention, placebo-controlled, pre-clinical phase, randomised, rheumatoid arthritis.
Glasgow Author(s) Enlighten ID:McInnes, Professor Iain
Authors: Al-Laith, M., Jasenecova, M., Abraham, S., Bosworth, A., Bruce, I. N., Buckley, C. D., Ciurtin, C., D'Agostino, M.-A., Emery, P., Gaston, H., Isaacs, J. D., Filer, A., Fisher, B. A., Huizinga, T. W.J., Ho, P., Jacklin, C., Lempp, H., McInnes, I. B., Pratt, A. G., Östor, A., Raza, K., Taylor, P. C., van Schaardenburg, D., Shivapatham, D., Wright, A. J., Vasconcelos, J. C., Kelly, J., Murphy, C., Prevost, A. .T., and Cope, A. P.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Trials
Publisher:BioMed Central
ISSN (Online):1745-6215
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Trials 20(1):429
Publisher Policy:Reproduced under a Creative Commons License

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