Publications by authors named "Alphons J L de Jong"

Objectives: The aim of this study was to identify the factors that play a role for patients with RA when considering dose reduction (i.e. gradual tapering until discontinuation) of biological DMARDs (bDMARDs), and to determine their relative importance.

View Article and Find Full Text PDF

Objective: To evaluate drug survival, effectiveness, pharmacokinetics, immunogenicity, and safety in daily practice after transitioning treatment from original reference infliximab (Remicade [REM]) to a biosimilar infliximab (CT-P13 [Remsima; Inflectra]) in patients with rheumatoid arthritis, psoriatic arthritis, or ankylosing spondylitis.

Methods: Of the initial 222 REM-treated patients, 192 agreed to transition to CT-P13 and were included in this multicenter prospective cohort study. Changes in the Disease Activity Score in 28 joints using the C-reactive protein level (DAS28-CRP) and the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and changes in the CRP levels, infliximab trough levels, and anti-infliximab antibody levels were assessed after 6 months, and adverse events (AEs) were documented.

View Article and Find Full Text PDF

Background: The aim of this study was to examine the measurement properties of the Dutch SF-36 version 2 (SF-36v2) health survey in patients with rheumatoid arthritis (RA).

Methods: Scaling assumptions, internal reliability, and internal construct validity were examined using available data from 1884 RA patients included in the Dutch Rheumatoid Arthritis Monitoring (DREAM) registry. External construct validity and responsiveness to change were examined using baseline and 6-month follow-up data from a subset of 387 early RA patients participating in the DREAM remission induction cohort.

View Article and Find Full Text PDF

Objective: The treatment of patients with fibromyalgia (FM), a high-prevalence chronic pain condition with a high impact on both patients and society, poses a great challenge to clinicians due to a lack of effective treatments. In view of the large individual variability in outcome, selecting patients at risk of long-term dysfunction and offering tailored treatment may be promising for beneficial treatment effects.

Methods: High-risk patients were selected and classified into 2 groups (pain-persistence and pain-avoidance groups) and subsequently randomized in groups to either a treatment condition (TC) or a waiting list control condition (WLC).

View Article and Find Full Text PDF

Recent developments in chronic pain research suggest that effectiveness of cognitive-behavioral therapy (CBT) may be optimized when applying early, customized treatments to patients at risk. For this purpose, a randomized, controlled trial with tailor-made treatment modules was conducted among patients with relatively early rheumatoid arthritis (RA disease duration of <8 years), who had been screened for psychosocial risk profiles. All participants received standard medical care from a rheumatologist and rheumatology nurse consultant.

View Article and Find Full Text PDF