Disclosed herein are siRNA compositions and methods useful for inhibiting expression of vascular endothelial growth factor (VEGF) isoforms. Such compositions and methods further involve siRNA capable of selectively targeting angiogenic VEGF isoforms while selectively sparing anti-angiogenic isoforms. Diseases which involve angiogenesis stimulated by overexpression of VEGF, such as diabetic retinopathy, age related macular degeneration and many types of cancer, can be treated by administering small interfering RNAs as disclosed.
