Repurposing Fenofibrate for Early Diabetic Retinopathy: A Systemic and Disease-Modifying Approach.

Abstract

Objective: Diabetic retinopathy (DR) remains a major cause of blindness worldwide, highlighting the need for accessible treatments that prevent its onset and progression. This review explores the potential of repurposing fenofibrate, a traditional lipid-lowering drug, as a systemic, disease-modifying therapy for DR.

Methods: This narrative synthesis of clinical and molecular studies was conducted to evaluate therapeutic impact of fenofibrate on DR. Evidence from trials was integrated with recent mechanistic data to clarify lipid-independent pathways of fenofibrate in retinal protection.

Results: Fenofibrate significantly reduced the progression of DR independent of serum lipid levels. Mechanistic insights indicate both PPAR-α-dependent and -independent actions that collectively protect retinal microvasculature. These include suppression of inflammation, reduction of oxidative stress, enhancement of endothelial function, and preservation of blood-retinal barrier integrity. The convergence of clinical and molecular evidence suggests that fenofibrate may exert direct retinal benefits beyond its metabolic effects.

Conclusions: Fenofibrate represents a practical, systemic therapy capable of halting early DR progression. By targeting underlying pathogenic mechanisms, it offers a preventative approach that complements current late-stage ocular interventions and may reduce the global burden of diabetes-related vision loss.