Journal
EXPERT OPINION ON PHARMACOTHERAPY
Volume 20, Issue 15, Pages 1879-1891Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14656566.2019.1636031
Keywords
Age-related macular degeneration; vascular endothelial growth factor; abicipar pegol; brolucizumab; conbercept; X-82; Tie-2 receptor; faricimab; nesvacumab; gene therapy; RGX-314; ADVM-022
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Introduction: Investigational anti-VEGF treatments for neovascular age-related macular degeneration (nAMD) aim to improve visual outcomes and reduce treatment burden; these include long-acting agents, combination strategies, topical agents, sustained-release, and genetic therapies. Areas covered: The authors provide a comprehensive review of investigational therapies for nAMD, focusing on therapies currently in clinical trial. Expert opinion: Long-acting anti-VEGF agents have demonstrated promising results in phase 3 studies, and include Brolucizumab, a single-chain antibody fragment, and Abicipar, a designed ankyrin repeat protein (DARPin). Other unique anti-VEGF agents in current trials include Conbercept - a fusion protein of the VEGF receptor domains, KSI-301 - an anti-VEGF antibody biopolymer conjugate, and OPT-302 - an inhibitor of VEGF-C/D. Strategies to activate the Tie-2 receptor, some in combination with VEGF inhibition, are of interest, with recent trials of Faricimab, ARP-1536, and nesvacumab. Topical anti-VEGF +/- anti-PDGF agents, such as pazopanib, squalamine lactate, regorafenib, and LHA510 have shown limited efficacy and/or have not been advanced, although PAN-90806 continues to advance with promising initial results. Sustained-release anti-VEGF treatments, to address treatment burden, include the ranibizumab Port Delivery System, GB-102, NT-503, hydrogel depot, Durasert, and ENV1305. Similarly, genetic therapies, including RGX-314 and ADVM-022, aim to provide sustained anti-VEGF expression from the retina.
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