Economic Evaluation of Micafungin versus Caspofungin for the Treatment of Candidaemia and Invasive Candidiasis.

Economic Evaluation of Micafungin versus Caspofungin for the Treatment of Candidaemia and Invasive Candidiasis.

Intern Med J. 2013 Mar 6;

Authors: Neoh CF, Liew D, Slavin MA, Marriott D, Chen SC, Morrissey O, Stewart K, Kong DC

Abstract
BACKGROUND: Micafungin demonstrated non-inferiority to caspofungin as definitive therapy for candidaemia and invasive candidiasis (IC) in a major randomised clinical trial. The aim of this study was to investigate if micafungin is a cost-saving option compared to caspofungin for treating candidaemia and IC. METHODS: A decision analytical model was constructed to capture downstream consequences of using either agent as initial therapy for candidaemia and IC. The main outcomes were treatment success and treatment failure (i.e. death, mycological persistence, emergent infection, clinical failure but microbiological success). Outcome probabilities and treatment pathways were derived from the literature. Cost inputs were from the latest Australian resources and resource use was estimated by expert panel. The analysis was from the Australian hospital perspective. Sensitivity analyses using Monte Carlo simulation were conducted. RESULTS: Micafungin (AU$52,816) was associated with a lower total cost than caspofungin (AU$52,976), with a net cost-saving of $160 per patient. This was primarily due to the lower cost associated with alternative antifungal treatment in the micafungin arm. Hospitalisation was the main cost driver for both arms. The model outcome was most sensitive to the proportion of treatment success in the micafungin arm. Uncertainty analysis demonstrated micafungin had a 58% chance of being cost-saving compared to caspofungin. CONCLUSIONS: Micafungin was cost-equivalent to caspofungin in treating candidaemia and IC, with variation in drug acquisition cost the critical factor.

PMID: 23461421 [PubMed - as supplied by publisher]

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