Economic evaluation of cinacalcet in the treatment of secondary hyperparathyroidism in Italy
Abstract
BACKGROUND: Imbalanced levels of parathyroid hormone (PTH), serum calcium (Ca) and phosphorous (P) are associated with an increased risk of cardiovascular (CV) death and fracture in dialysis patients with secondary hyperparathyroidism (SHPT). The calcimimetic agent cinacalcet can attenuate the mineral and hormonal imbalances characteristic of SHPT and may improve outcomes in such patients. Here we describe a cost-utility analysis of cinacalcet for SHPT in dialysis patients in Italy.
METHODS: We developed a probabilistic Markov model to simulate the effect of cinacalcet on Ca, P and PTH levels in dialysis patients with SHPT, based on data from a European, multicentre, open-label study. The model then correlated these levels with mortality and morbidity (CV events, fractures and parathyroidectomies) using data from the literature, and incorporated Italian data for dialysis, drugs and management of events according to the national cost structure. The simulation horizon was patient lifetime; simulated treatment alternatives were standard treatment (mainly vitamin D sterols and phosphate binders) and cinacalcet + standard treatment. A 3.5% discount rate was applied to life expectancy (LE), quality-adjusted life-expectancy (QALE), costs and times below the upper ranges (time in range [TiR]) recommended by the National Kidney Foundation - Kidney Disease Outcomes Quality initiative for PTH, Ca, P and Ca × P. Utilities were derived from the published literature and took into account…
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