Dataset Information

Patterns of Systemic Treatment for Psoriatic Arthritis in the US: 2004-2015.

ABSTRACT:

Objective

To examine trends in the use of systemic disease-modifying antirheumatic drugs (DMARDs) among patients with psoriatic arthritis (PsA) in the US.

Methods

Using claims data (2004-2015) from a large US commercial health plan, we identified patients with PsA who initiated DMARD therapy. We examined baseline patient characteristics and initial treatment patterns. We then assessed changes in the DMARD regimen over the 12-month period after the first DMARD initiation date. Using Poisson regression, we estimated age- and sex-adjusted incidence rates of treatment changes in each calendar year.

Results

We identified 9,222 PsA patients who initiated DMARD therapy (42.8% biologic DMARDs [bDMARDs] and 57.2% conventional synthetic DMARDs [csDMARDs]). Initiators of bDMARDs were younger than those initiating csDMARDs (mean ± SD age 48 ± 13 versus 52 ± 14 years) and generally had fewer comorbidities, but a higher proportion of bDMARD initiators received nonsystemic treatments for psoriasis at baseline. Methotrexate was the most frequently used DMARD, constituting 80.6% of csDMARD initiations. Etanercept (49.1%) was the most commonly prescribed bDMARD, followed by adalimumab (34.4%). During the 12-month followup after the first DMARD initiation, 20.1% of bDMARD initiators and 31.1% of csDMARD initiators had their initial DMARD regimen modified, with an increasing trend in treatment modifications over the 11-year study period (P = 0.03). Overall, 5.3% of patients discontinued treatment, but the rates of discontinuation decreased over time (P < 0.001).

Conclusion

In this large cohort of PsA patients with DMARD initiation, more than 40% were treated with a bDMARD. We found an increasing trend in treatment modification after use of the initial DMARD and a decreasing trend in complete DMARD discontinuation over the past decade.

SUBMITTER: Lee MP

PROVIDER: S-EPMC5811404 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Patterns of Systemic Treatment for Psoriatic Arthritis in the US: 2004-2015.

Lee Moa P MP Lii Joyce J Jin Yinzhu Y Desai Rishi J RJ Solomon Daniel H DH Merola Joseph F JF Kim Seoyoung C SC

Arthritis care & research 20180323 5

<h4>Objective</h4>To examine trends in the use of systemic disease-modifying antirheumatic drugs (DMARDs) among patients with psoriatic arthritis (PsA) in the US.<h4>Methods</h4>Using claims data (2004-2015) from a large US commercial health plan, we identified patients with PsA who initiated DMARD therapy. We examined baseline patient characteristics and initial treatment patterns. We then assessed changes in the DMARD regimen over the 12-month period after the first DMARD initiation date. Usin ...[more]

PMID: 28804988

Similar Datasets

Project description:INTRODUCTION:We compared treatment switch patterns and healthcare costs among biologic-naive patients with psoriatic arthritis (PsA) who initiated apremilast or biologics. METHODS:A 1:2 propensity score match was used to adjust administrative claims data for adults initiating apremilast or biologics from January 1, 2014, to September 30, 2016, for possible selection bias. Patients had at least 12 months of pre- and post-index continuous enrollment in the Optum Clinformatics™ Data Mart database. Outcomes included switch frequency, days to switch, adherence on index treatment, and healthcare costs (total and per patient per month). Switch rate was defined as the proportion of patients who switched to a new treatment after initiation of the index treatment, and days to switch was calculated as the days between initiation of the index treatment and initiation of the new treatment. Adherence was calculated using the proportion of days covered and the medication possession ratio. The t test and chi-square, Kaplan-Meier, and Wilcoxon rank-sum tests were used to evaluate differences between the cohorts. RESULTS:Patient characteristics and switch rates were similar between the matched apremilast (n?=?170) and biologic (n?=?327) cohorts. After matching, patient characteristics were similar between the matched cohorts. The 12-month switch rates were similar for patients initiating apremilast versus those on biologics (17.7% vs. 25.1%, P?=?0.06). This trend was similar at 6 months (7.7% vs. 13.2%, P?=?0.07) and 18 months (24.4% vs. 29.3%, P?=?0.33). Regardless of treatment switching, 12-month total healthcare costs were lower with apremilast versus biologics (all: $28,423 vs. $41,178, P?<?0.0001; switched: $39,803 vs. $51,517, P?=?0.0040; did not switch: $25,984 vs. $37,717, P?<?0.0001). CONCLUSIONS:Biologic-naive patients with PsA who initiated apremilast had switch rates similar to biologic users and significantly lower healthcare costs, regardless of treatment switching.

Project description:IntroductionPsoriatic arthritis (PsA) is an immune-mediated chronic inflammatory arthropathy associated with impaired physical function and reduced quality of life. Biologic therapies that target tumor necrosis factor (anti-TNF) have significantly improved clinical outcomes. Partial, non- and transient responses remain common comprising significant unmet clinical need. New therapies with novel modes of action are urgently required.ObjectivesThe interleukin (IL)-17 pathway has recently been attributed a critical role in the pathogenesis of spondyloarthritides. Herein, we review data from clinical studies with secukinumab, a novel fully human IgG1κ anti-IL-17A monoclonal antibody (mAb), in patients with active PsA.ResultsAcross two pivotal phase 3 studies, secukinumab provided significant and sustained reductions in the signs and symptoms of PsA, inhibition of radiographic progression, and improved patient-reported outcomes and measures of quality of life. The primary efficacy endpoint, a ≥20% improvement from baseline according to the American College of Rheumatology 20 (ACR20) response at Week 24, was significantly higher in patients treated with secukinumab compared with placebo, with improvements sustained through at least 52 weeks. Clinical benefits were seen with secukinumab regardless of concomitant methotrexate treatment and in patients who were either anti-TNF-naïve or who were inadequate responders to anti-TNF therapy. Secukinumab was well-tolerated, with a safety profile consistent with that previously reported in psoriasis trials. The most common adverse events were nasopharyngitis, upper respiratory tract infections, and headache.ConclusionSecukinumab offers an effective new addition to the available treatment options for PsA. Regulatory submissions have been filed worldwide, with the first approvals recently obtained in Japan and Europe. Future studies are required to define the optimal timing and strategic use of this novel treatment modality.FundingNovartis Pharma.

Dataset Information

Patterns of Systemic Treatment for Psoriatic Arthritis in the US: 2004-2015.

Objective

Methods

Results

Conclusion

Publications

Patterns of Systemic Treatment for Psoriatic Arthritis in the US: 2004-2015.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets