In developed countries,
age-related macular degeneration (AMD) is the leading cause of irreversible
blindness in individuals over the age of 65 years.
Vascular endothelial growth factor (
VEGF) plays a vital role in the formation of neovascular AMD.
VEGF regulates angiogenesis, enhances vascular permeability, and drives the formation of
choroidal neovascularization. As a result of the introduction of anti-
VEGF drugs, the incidence of
blindness from neovascular AMD has greatly reduced. Anti-
VEGF drugs are used as a first-line treatment for neovascular AMD. The most recent anti-
VEGF drug is
conbercept, also named KH902, which was approved for the treatment of neovascular AMD by the China Food and Drug Administration in December 2013. In this review, recent clinical information regarding the use of
conbercept to treat neovascular AMD is summarized.
Conbercept is a soluble receptor decoy that blocks all
isoforms of
VEGF-A,
VEGF-B,
VEGF-C, and PlGF, which has a high binding affinity to
VEGF and a long half-life in vitreous. Preclinical studies have demonstrated its anti-angiogenesis activity in both ocular neovascular disease models and
tumor models. Clinical trials of
conbercept have shown its superior efficacy and safety. Patients respond well even with 3-month treatment intervals following loading doses once a month for 3 months. The potential
therapeutic effect of
conbercept on the treatment of
polypoidal choroidal vasculopathy, a special type of neovascular AMD, is also promising. In summary,
conbercept is a new treatment option for ophthalmologists and their patients and may help address the limitations of current anti-
VEGF drugs.