AbstractObjectives:No head-to-head trial has compared the efficacy of adalimumab vs etanercept and infliximab for psoriatic arthritis (PsA). This study implements a matching-adjusted indirect comparison technique to address that gap.Methods:Patient-level data from a placebo-controlled trial of adalimumab (ADEPT) were re-weighted to match average baseline characteristics from pivotal published trials of etanercept and infliximab. ADEPT patients were re-weighted by odds of enrollment in comparator trials, estimated using logistic regression. Matched-on characteristics included PsA duration, age, gender, severity, active psoriasis, and concomitant treatment. After matching, placebo-adjusted treatment arms were compared at weeks 12 (or 14) and 24. Outcomes included ACR20/50/70, PsARC, HAQ, and modified TSS. PASI50/75/90 were compared for patients with active psoriasis. Cost per responder (CPR) was assessed in the US and Germany using matching-adjusted end-points and drug list prices. Statistical significance was assessed using weighted t-tests.Results:After matching, adalimumab-treated patients had greater placebo-adjusted rates of ACR70 and PASI50/75/90 at week 24 compared with etanercept (all p?<?0.05). Adalimumab patients had a higher placebo-adjusted rate of ACR70 than infliximab at week 14 (p?=?0.034). Adalimumab treatment had lower CPR for ACR70 and PASI50/75/90 compared with etanercept at week 24, in both the US and Germany (all p?<?0.02). Adalimumab had lower CPR than infliximab for all outcomes at week 24 (all p?<?0.05).Conclusion:Adalimumab is associated with higher ACR70 and PASI50/75/90 response rates than etanercept at week 24 and a higher ACR70 response rate than infliximab at week 14. Adalimumab has significant advantages over etanercept and infliximab in CPR across multiple end-points.Key limitations:The matching-adjusted indirect comparison method cannot account for unobserved differences in patient characteristics across trials, and only a head-to-head randomized clinical trial can fully avoid the limitations of indirect comparisons. CPR findings are limited to the US and German markets, and may not be generalizable to other markets with different relative pricing. 相似文献
Objective:This study examined the proportion and magnitude of dose escalation nationally and regionally among rheumatoid arthritis (RA) patients treated with TNF-blockers and estimated the costs of TNF-blocker therapy.Methods:This retrospective cohort study used claims data from US commercially-insured adult RA patients who initiated adalimumab, etanercept, or infliximab therapy between 2005–2009. Biologic-naïve patients enrolled in the health plan for ≥6 months before and ≥12 months after therapy initiation were followed for 12 months. Dose escalation was assessed using three methods: (1) average weekly dose?>?recommended label dose, (2) average ending dispensed dose?>?maintenance dose, and (3) average dose after maintenance dose?>?maintenance dose. Annual cost of therapy included costs for mean dose and drug administration fees.Results:Overall, 1420 etanercept, 874 adalimumab, and 454 infliximab patients were included. A significantly lower proportion of etanercept-treated patients had dose escalation using the average weekly dose (3.9% vs 21.4% adalimumab and 69.6% infliximab; p?0.0001), average ending dispensed dose (1.1% vs 10.6% adalimumab and 63.0% infliximab; p?0.0001), and average dose after maintenance dose methods (2.8% vs 15.7% adalimumab and 69.6% infliximab; p?0.0001). Regional dose escalation rates and magnitudes of escalation were directionally consistent with national rates. Etanercept had the lowest cost per treated RA patient ($19,690) compared to adalimumab ($23,020) and infliximab ($24,030).Limitations:Exclusion of patients not on continuous TNF-blocker therapy limits the generalizability; however, ~50% of patients were persistent on therapy for 12 months. The study population comprised RA patients in commercial health plans, thus the results may not be generalizable to Medicare or uninsured populations.Conclusions:In this retrospective study, etanercept patients had the lowest proportions and magnitudes of dose escalation across all methods compared to adalimumab and infliximab patients nationally and regionally. Mean annual cost was lowest for etanercept-treated patients. 相似文献
AbstractObjective:To calculate annual cost per treated patient of tumor necrosis factor (TNF) inhibitors etanercept, adalimumab, and infliximab for common approved indications, based on actual TNF-inhibitor use in clinical practice.Methods:Adults with ≥1 claim for etanercept, adalimumab, or infliximab between January 2005 and March 2009 were identified from the IMS LifeLink? Health Plan Claims Database. Patients new to therapy or continuing therapy (i.e., a prior claim for a TNF-inhibitor) were analyzed separately. Included patients had been enrolled from 180 days before the first TNF-inhibitor claim (index date) through 360 days after the index date and had a diagnosis during the pre-index period for rheumatoid arthritis, psoriasis, psoriatic arthritis, or ankylosing spondylitis. Patients with Crohn’s disease, ulcerative colitis, or juvenile idiopathic arthritis were excluded. Annual costs were calculated using wholesale acquisition costs for the TNF-inhibitor and Medicare Physician Fee Schedule for drug administration. Costs from restarting or switching TNF-inhibitor therapy during the first year were included.Results:A total of 27,704 patients (11,528 new, 16,176 continuing) had claims for etanercept, adalimumab, or infliximab, most commonly (65%) for treatment of rheumatoid arthritis. The most commonly used agent was etanercept (14,777 patients; 53%), followed by adalimumab (6862 patients; 25%) and infliximab (6065 patients; 22%). Annual cost per treated patient was etanercept $14,873, adalimumab $17,766, and infliximab $21,256 across all indications. Annual cost per treated patient by disease was (etanercept/adalimumab/infliximab): rheumatoid arthritis ($14,314/$17,700/$20,390), psoriasis ($17,182/$17,682/$23,935), psoriatic arthritis ($15,030/$18,483/$24,974), and ankylosing spondylitis ($14,254/$16,925/$23,056). New and continuing patients showed similar results, with etanercept having the lowest costs.Limitations:This analysis is limited to three TNF-inhibitors and a US managed-care population.Conclusions:Based on this analysis of real-world use of TNF-inhibitors among patients in nationwide clinical practice settings, the annual TNF-inhibitor cost per treated patient was lowest for etanercept across all indications. 相似文献
Aims: To conduct a lifetime cost-effectiveness analysis (CEA) of rasburicase compared with standard of care (SOC) for tumor lysis syndrome (TLS) in children with hematologic malignancies from the Chinese healthcare system perspective.
Materials and methods: The CEA was performed using a decision tree model with a lifetime horizon. The model explores the cost-effectiveness of rasburicase vs SOC for both preventing TLS and treating established TLS among pediatric patients with acute myeloid leukemia (AML), acute lymphoid leukemia (ALL), and non-Hodgkin’s lymphoma (NHL). Both the prophylaxis-use model and treatment-use model incorporate long-term health states of the diseases: survival without TLS and death. The efficacy data of rasburicase and SOC were obtained from published literature. Drug costs, healthcare resource utilization (HRU), and adverse event (AE) management costs were obtained via a published study with clinical experts. Costs in US dollar and quality-adjusted life year (QALY) are reported, and incremental cost-effectiveness ratios (ICERs) were also calculated. Uncertainties due to parameter fluctuations in the model were assessed through one-way sensitivity analysis and probabilistic sensitivity analysis (PSA).
Results: During TLS prevention, compared with SOC, the ICER of rasburicase treatment in China are $17,580.04/QALY, $5,783.45/QALY, and $5,391.00/QALY for pediatric patients with AML, ALL, and NHL, respectively. For the established TLS treatment, compared with SOC, the ICERs of rasburicase treatment are $2,031.18/QALY, $1,142.93/QALY, and $990.37/QALY for pediatric patients with AML, ALL, and NHL, respectively.
Limitations: The clinical data for SOC are based on the published study in China, and the rasburicase prevention or treatment failure rate was either calculated based on the risk ratio or directly from the clinical study among non-Chinese pediatric patients. Another study limitation was the lack of utility data for pediatric patients with TLS and without TLS. Thus, the utility scores of pediatric cancer survivors were used as an alternative.
Conclusion: Rasburicase is estimated to be a cost-effective alternative to SOC in the prevention and treatment of TLS among Chinese pediatric patients with AML, ALL, and NHL. 相似文献
AbstractObjective:To estimate annual biologic response modifier (BRM) cost per treated patient with rheumatoid arthritis, psoriasis, psoriatic arthritis, and/or ankylosing spondylitis receiving etanercept, abatacept, adalimumab, certolizumab, golimumab, infliximab, rituximab, or ustekinumab.Methods:This was a cohort study of 69,349 commercially insured individuals in a nationwide claims database with one of these conditions that had a claim for one of these BRMs between January 2008 and December 2010 (the index BRM/index date). Cost per treated patient was calculated as the total BRM acquisition and administration cost to the payer in the first year after the index date (including costs of other BRMs after switching) divided by the number of patients who received the index BRM. Etanercept was selected as the reference for comparisons.Results:Etanercept was the most commonly used index BRM (n?=?32,298; 47%), followed by adalimumab (n?=?20,582; 30%), infliximab (n?=?11,157; 16%), abatacept (n?=?2633; 4%), rituximab (n?=?1359; 2%), golimumab (n?=?687; <1%), ustekinumab (n?=?388; <1%), and certolizumab (n?=?245; <1%). Using etanercept as the reference, the cost per treated patient in the first year across all four conditions was 102% for adalimumab and 108% for infliximab. Newer BRMs had costs relative to etanercept that were 90% to 102% for rheumatoid arthritis, 132% for psoriasis, 100% for psoriatic arthritis, and 94% for ankylosing spondylitis.Limitations:Potential study limitations were the lack of clinical information (e.g., disease severity, treatment outcomes) or indirect costs, the inability to compare costs of newer BRMs across all four conditions, and much smaller sample sizes for newer BRMs.Conclusions:Of the BRMs that are approved for indications within all four conditions studied, etanercept had the lowest cost per treated patient when assessed across all four conditions. 相似文献