Aflibercept vs. Ranibizumab: cost-effectiveness of treatment for wet age-related macular degeneration in Sweden.

Abstract:

PURPOSE:Monthly dosing with ranibizumab (RBZ) is needed to achieve maximal visual gains in patients with neovascular ('wet') age-related macular degeneration (wAMD). In Sweden, dosing is performed as needed (RBZ PRN), resulting in suboptimal efficacy. Intravitreal aflibercept (IVT-AFL) every 2 months after three initial monthly doses was clinically equivalent to RBZ monthly dosing (RBZ q4) in wAMD clinical trials. We assessed the cost-effectiveness of IVT-AFL versus RBZ q4 and RBZ PRN in Sweden. METHODS:A Markov model compared IVT-AFL to RBZ q4 or RBZ PRN over 2 years. Health states were based on visual acuity in better-seeing eye; a proportion discontinued treatment monthly or upon visual acuity <20/400. Parameters were estimated from trial data, published literature or expert opinion. Analyses were performed from a societal perspective with a lifetime horizon. The model calculated costs, quality-adjusted life years (QALYs) and incremental cost-effectiveness ratios (ICERs), discounted 3% annually. Deterministic and probabilistic sensitivity analyses were performed. RESULTS:Lifetime cost of IVT-AFL was 578 400 SEK, compared with 565 700 SEK for RBZ PRN and 686 600 SEK for RBZ q4. Compared with RBZ PRN, the ICER of IVT-AFL was 27 000 SEK/QALY gained. RBZ q4 cost 20.4 million SEK/QALY gained versus IVT-AFL. Results were sensitive to IVT-AFL efficacy, but IVT-AFL had a 100% probability of being cost-effective versus both RBZ PRN and RBZ q4 at a willingness-to-pay threshold of 500 000 SEK. CONCLUSION:Results suggest, in Sweden, at parity price level, IVT-AFL is less costly than RBZ q4, while demonstrating similar efficacy; IVT-AFL is cost-effective versus RBZ PRN.

journal_name

Acta Ophthalmol

journal_title

Acta ophthalmologica

authors

Panchmatia HR,Clements KM,Hulbert E,Eriksson M,Wittrup-Jensen K,Nilsson J,Weinstein MC

doi

10.1111/aos.12964

subject

Has Abstract

pub_date

2016-08-01 00:00:00

pages

441-8

issue

5

eissn

1755-375X

issn

1755-3768

journal_volume

94

pub_type

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