Indolinone derivatives have in common the presence of a hydrogen bond between the C-2 carbonyl and a hydrogen donor in a side chain, generally a pyrrole ring. Indolinone displays very promising antitumor properties by inhibiting various kinase families.
EyePoint Pharmaceuticals announced on December 4th announced positive topline results of its Phase 2 DAVIO 2 trial of EYP-1901, an investigational sustained delivery maintenance treatment for wet age-related macular degeneration (wet AMD) combining vorolanib, a selective tyrosine kinase inhibitor with bioerodible Durasert E™. Vorolanib brings a new mechanistic approach to the treatment of VEGF-mediated retinal diseases as a pan-VEGF receptor blocker, blocking all VEGF isoforms. Vorolanib features reduced off-target binding and at clinically relevant doses does not inhibit Tie-2, a critical pathway associated with vascular stability, which may result in an improved efficacy. Further, in an in-vivo model of retinal detachment, vorolanib demonstrated neuroprotection, and potential antifibrotic benefits.