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Beyond VEGF-The Weisenfeld Lecture.

Joan W Miller

    Investigative Ophthalmology & Visual Science
    |December 28, 2016
    PubMed
    Summary

    Advances in age-related macular degeneration (AMD) treatment show anti-VEGF therapy is effective but not a cure. Targeting lipid accumulation with statins shows promise for drusen regression and improved vision in AMD patients.

    Area of Science:

    • Ophthalmology
    • Retinal Diseases
    • Macular Degeneration

    Background:

    • Vascular endothelial growth factor (VEGF) inhibitors revolutionized age-related macular degeneration (AMD) treatment, controlling neovascularization.
    • Long-term studies reveal continued degenerative processes and potential atrophic changes with anti-VEGF therapy.
    • Neuroprotection strategies aim to prevent retinal atrophy by blocking apoptotic and necrotic cell death pathways.

    Discussion:

    • Current AMD treatments, including anti-VEGF and neuroprotection, do not address the disease's root cause: abnormal lipid accumulation.
    • Lipid retention in Bruch's membrane and the retinal pigmented epithelium (RPE) is implicated in early AMD and drusen formation.
    • Targeting lipid removal presents a novel therapeutic strategy for AMD.

    Key Insights:

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    • High-dose statin therapy demonstrated significant drusen regression and improved visual acuity in a case study and pilot trial.
    • These preliminary findings suggest statins may be a viable approach to manage lipid accumulation in AMD.
    • Further investigation into statin therapy for AMD is warranted based on these encouraging results.

    Outlook:

    • Future AMD treatments must be biologically driven, requiring deeper understanding of pathogenic mechanisms.
    • Promising therapeutic targets include neuroprotection, immune pathways (inflammation, complement, inflammasomes), and lipid/lipoprotein management.
    • Improved phenotyping and classification are crucial for advancing AMD therapy due to disease heterogeneity.