Wet AMD is the leading cause of blindness in the developed world in people aged over 50 years. It is caused by the abnormal growth and leakage of blood vessels at the back of the eye, which causes degeneration of the retina and vision loss.

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Opthea’s technology is centered on two members of the Vascular Endothelial Growth Factor (VEGF) family of proteins, VEGF-C and VEGF-D, and their activation of VEGF receptors. These proteins promote blood vessel development (angiogenesis) by binding and activating VEGFR-2 and VEGFR-3, and lymphatic vessel development (lymphangiogenesis), by activation of VEGFR-3.

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Both wet AMD and DME are associated with vascular dysfunction and fluid accumulation at the back of the eye in a region of the central retina or ‘macula’ that is needed for sharp, central vision. Vessel growth and vascular leakage are primarily driven by members of the vascular endothelial growth factor (VEGF) family, which comprises 5 members including VEGF-A, VEGF-B, VEGF-C, VEGF-D and placenta growth factor (PlGF).

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OPT-302, blocks two members of the vascular endothelial growth factor family, namely VEGF-C and VEGF-D, which cause blood vessels to grow and leak. Aberrant blood vessel growth and vascular leakage are hallmarks of several eye diseases including wet age-related macular degeneration (wet AMD) and diabetic macular edema (DME).

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