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01.12.2015 | Research article | Ausgabe 1/2015 Open Access

BMC Urology 1/2015

Cost-effectiveness of a fixed-dose combination of solifenacin and oral controlled adsorption system formulation of tamsulosin in men with lower urinary tract symptoms associated with benign prostatic hyperplasia

Zeitschrift:
BMC Urology > Ausgabe 1/2015
Autoren:
Jameel Nazir, Lars Heemstra, Anke van Engen, Zalmai Hakimi, Cristina Ivanescu
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​s12894-015-0031-8) contains supplementary material, which is available to authorized users.

Competing interests

Zalmai Hakimi is employed by Astellas Pharma Global Development and Jameel Nazir is employed by Astellas Pharma Europe Ltd. Lars Heemstra, Anke van Engen, and Cristina Ivanescu are employed by Quintiles Consulting.

Authors’ contributions

All authors contributed to the design of the study, interpretation of the data, critically revised the publication for important intellectual content; and approved the final version for publication. L, A and C collected the data and performed the analyses. All authors have read and approved this manuscript.

Abstract

Background

Storage symptoms, associated with benign prostatic hyperplasia (BPH), often co-exist with voiding symptoms in men with lower urinary tract symptoms (LUTS). Storage symptoms are likely to be most bothersome, and may not be adequately resolved by treatment with α-blocker or antimuscarinic monotherapy. A recent randomised controlled phase 3 trial (NEPTUNE) demonstrated that a fixed-dose combination (FDC) of solifenacin 6 mg plus an oral controlled absorption system (OCAS™) formulation of tamsulosin (TOCAS, 0.4 mg) improved storage symptoms, as well as quality of life, compared with TOCAS alone in men with moderate-to-severe storage symptoms and voiding symptoms. This analysis aimed to assess the cost-effectiveness of a FDC tablet of solifenacin 6 mg plus TOCAS relative to tolterodine plus tamsulosin given concomitantly, from the perspective of the UK National Health Service (NHS).

Methods

A Markov model was developed for men aged ≥45 years with LUTS/BPH who have moderate-to-severe storage symptoms and voiding symptoms. The model calculated cost-effectiveness over an analytical time horizon of 1 year and estimated total treatment costs, quality adjusted life years (QALYs) and incremental cost-effectiveness ratio.

Results

The FDC tablet of solifenacin 6 mg plus TOCAS was associated with lower total annual costs (£860 versus £959) and increased QALYs (0.839 versus 0.836), and was therefore dominant compared with tolterodine plus tamsulosin. Time horizon, discontinuation or withdrawal rates, drug cost and utility values were the main drivers of cost-effectiveness. The probability that the FDC tablet of solifenacin 6 mg plus TOCAS is cost-effective was 100% versus tolterodine plus tamsulosin, at a willingness-to-pay threshold of £20,000/QALY gained.

Conclusions

The FDC tablet of solifenacin 6 mg plus TOCAS provides important clinical benefits and is a cost-effective treatment strategy in the UK NHS compared with tolterodine plus tamsulosin for men with both storage and voiding LUTS/BPH.
Zusatzmaterial
Additional file 1: Table S1. Key model assumptions [18,23,28,44-46]. Table S2. Alternative utility weights per health state.
Literatur
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