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  • Title: The cost-effectiveness of levodopa/carbidopa intestinal gel compared to standard care in advanced Parkinson's disease.
    Author: Lowin J, Sail K, Baj R, Jalundhwala YJ, Marshall TS, Konwea H, Chaudhuri KR.
    Journal: J Med Econ; 2017 Nov; 20(11):1207-1215. PubMed ID: 28895769.
    Abstract:
    BACKGROUND: Parkinson's disease (PD) is an incurable, progressive neurological condition, with symptoms impacting movement, walking, and posture that eventually become severely disabling. Advanced PD (aPD) has a significant impact on quality-of-life (QoL) for patients and their caregivers/families. Levodopa/carbidopa intestinal gel (LCIG) is indicated for the treatment of advanced levodopa-responsive PD with severe motor fluctuations and hyper-/dyskinesia when available combinations of therapy have not given satisfactory results. AIMS: To determine the cost-effectiveness of LCIG vs standard of care (SoC) for the treatment of aPD patients. METHODS: A Markov model was used to evaluate LCIG vs SoC in a hypothetical cohort of 100 aPD patients with severe motor fluctuations from an Irish healthcare perspective. Model health states were defined by Hoehn & Yahr (H&Y) scale-combined with amount of time in OFF-time-and death. SoC comprised of standard oral therapy ± subcutaneous apomorphine infusion and standard follow-up visits. Clinical efficacy, utilities, and transition probabilities were derived from published studies. Resource use was estimated from individual patient-level data from Adelphi 2012 UK dataset, using Irish costs, where possible. Time horizon was 20 years. Costs and outcomes were discounted at 4%. Both one-way and probabilistic sensitivity analyses were conducted. RESULTS: The incremental cost-effectiveness ratio for LCIG vs SOC was €26,944/quality adjusted life year (QALY) (total costs and QALYs for LCIG vs SoC: €537,687 vs €514,037 and 4.37 vs 3.49, respectively). LCIG is cost-effective at a payer threshold of €45,000. The model was most sensitive to health state costs. CONCLUSION: LCIG is a cost-effective treatment option compared with SoC in patients with aPD.
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