Publications by authors named "Andreas H Gerards"

Objective: The aim of the current study was to evaluate the 2-year cost-utility ratio between tapering conventional synthetic disease-modifying antirheumatic drugs (csDMARD) first followed by the tumour necrosis factor (TNF)-inhibitor, or vice versa, in patients with rheumatoid arthritis (RA).

Methods: Two-year data of the Tapering strategies in Rheumatoid Arthritis trial were used. Patients with RA, who used both a csDMARD and a TNF-inhibitor and had a well-controlled disease (disease activity score ≤2.

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Objectives: To compare responsiveness and longitudinal validity of Disease Activity Score 28 (DAS28), Disease Activity index for PSoriatic Arthritis (DAPSA), Composite Psoriatic Disease Activity Index (CPDAI), Psoriatic ArthritiS Disease Activity Score (PASDAS), GRAppa Composite scorE (GRACE) and Minimal Disease Activity (MDA) in usual care PsA patients, within 1 year after diagnosis.

Methods: Data collected in the Dutch southwest early PsA cohort (DEPAR) were used. Responsiveness was assessed using effect size (ES), standardized response mean (SRM), and discrimination between different general health states.

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Objective: Enthesitis is a manifestation of psoriatic arthritis (PsA), but its symptoms are difficult to interpret clinically. We investigated the associations of ultrasonographic changes in entheses with clinical characteristics in patients with PsA, and compared enthesis changes of patients aged 35 to 60 years with healthy volunteers of that age.

Methods: Consecutive patients with PsA participated in this cross-sectional study, irrespective of enthesitis complaints and age.

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Background: In a cohort of patients with newly diagnosed psoriatic arthritis (PsA) who received usual care, we investigated the impact of time elapsed to minimal disease activity (MDA) on health-related quality of life (HRQoL), work productivity, and radiographic damage throughout the first year after diagnosis.

Methods: Data collected in the Dutch southwest early PsA cohort (DEPAR) study were analyzed. These three-monthly data encompassed disease activity, HRQOL was measured with the Short Form 36 (SF36) Physical Component Scale (SF36-PCS) and Mental Component Scale, and productivity was measured with the Productivity Cost Questionnaire.

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Objective: Acute anterior uveitis (AAU) is common in ankylosing spondylitis (AS). Golimumab (GOL), a tumor necrosis factor-α inhibitor (TNFi), has proven to be effective in the treatment of AS. To date, the effect of GOL on the incidence of AAU in AS is unknown.

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Objective: Psoriatic arthritis (PsA) is a multifaceted disease. Affecting joints, skin, entheses, and dactylitis, its effect on health-related quality of life (HRQOL) could be substantial. We aim to assess HRQOL in patients newly diagnosed with PsA and analyze its associations with disease manifestations.

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Objective: Treat-to-target strategies have improved outcomes in rheumatic diseases. In psoriatic arthritis (PsA), the proposed targets are the multidimensional target minimal disease activity (MDA) and the articular target Disease Activity index for PsA (DAPSA). The aim of this study was to compare the disease burden of PsA in patients with low disease activity according to the 2 definitions, MDA and DAPSA low disease activity (DAPSA-LDA), 1 year after diagnosis.

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Objective: Ultrasonography (US) can be used for treatment decisions in RA patients. This study investigated the added value of US to clinical variables in predicting flare in RA patients with longstanding low disease activity when stopping TNF inhibitors (TNFi).

Methods: Cox models with and without using US added to clinical variables were developed in the Potential Optimization of Expediency of TNFi-UltraSonography study.

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Objectives: Although RA patients achieve clinical remission, risk of flare still exists. Given the association between US synovitis and increased risk of flare, it is of clinical interest whether these patients report a different health status. Therefore, our aim was to evaluate the frequency of US remission in RA patients in clinical remission and to compare the health status of RA patients in clinical remission with those who were also in US remission.

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Objective: To evaluate direct and indirect costs per quality adjusted life year (QALY) for different initial treatment strategies in very early RA.

Methods: The 1-year data of the treatment in the Rotterdam Early Arthritis Cohort trial were used. Patients with a high probability (>70%) according to their likelihood of progressing to persistent arthritis, based on the prediction model of Visser, were randomized into one of following initial treatment strategies: (A) initial triple DMARD therapy (iTDT) with glucocorticoids (GCs) intramuscular (n = 91); (B) iTDT with an oral GC tapering scheme (n = 93); and (C) initial MTX monotherapy (iMM) with GCs similar to B (n = 97).

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Objective: In this study we aimed to evaluate the effect of lowering the cut point of the 2010 criteria to identify more patients with RA among early inflammatory arthritis patients.

Methods: We included early arthritis patients from the Rotterdam Early Arthritis Cohort with at least one joint with clinical synovitis and symptoms for <1 year, with no other explanation for their symptoms. The demographic and clinical characteristics of each patient were recorded at baseline.

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Introduction: Flares in patients with rheumatoid arthritis are suggested to sometimes spontaneously resolve. Targeted therapy could then entail possible overtreatment. We aimed to determine the flare prevalence in patients who are treated-to-target and to evaluate associations between flares and patient-reported outcomes and radiographic progression.

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Objective: To investigate if erythrocyte-methotrexate-polyglutamate (MTX-PG) concentrations in patients with rheumatoid arthritis (RA) are associated with disease activity or adverse events.

Methods: We used a longitudinal study design with two cohorts. The derivation cohort included 102 and the validation cohort included 285 patients with RA on MTX.

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Introduction: Ultrasonography (US) might have an added value to clinical examination in diagnosing early rheumatoid arthritis (RA) and assessing remission of RA. We aimed to clarify the added value of US in RA in these situations performing a systematic review.

Methods: A systematic literature search was performed for RA, US, diagnosis and remission.

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Introduction: To investigate whether accelerated hand bone mineral density (BMD) loss is associated with progressive joint damage in hands and feet in the first year of rheumatoid arthritis (RA) and whether it is an independent predictor of subsequent progressive total joint damage after 4 years.

Methods: In 256 recent-onset RA patients, baseline and 1-year hand BMD was measured in metacarpals 2-4 by digital X-ray radiogrammetry. Joint damage in hands and feet were scored in random order according to the Sharp-van der Heijde method at baseline and yearly up to 4 years.

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Objectives: To determine the efficacy of subsequent disease modifying antirheumatic drug (DMARD) therapies after initial methotrexate (MTX) failure in patients with recent onset rheumatoid arthritis (RA), treated according to the DAS for 2 years.

Methods: In groups 1 and 2 of the BeSt study, 244 RA patients were initially treated with MTX 15-25 mg/week. Patients who discontinued MTX because of insufficient clinical response (disease activity score, DAS >2.

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Mycophenolic acid (MPA) and methotrexate (MTX) are immunosuppressive drugs used for the treatment of various immunological disorders. MPA is an inhibitor of inosine monophosphate dehydrogenase and MTX is a folate antagonist that inhibits tetrahydrofolate reductase. Production of T cell cytokines in whole blood cultures, as well as in PBMC cultures, is inhibited by a low concentration of both drugs.

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