Despite promising results showed by pre-clinical studies, anti-VEGF monotherapy such as bevacizumab, sunitinib and aflibercept among others have only provided limited benefits in certain tumor types including advanced-stage renal cell carcinoma, hepatocellular carcinoma and colorectal carcinoma and have not shown efficacy in pancreatic adenocarcinoma, prostate cancer, breast cancer or melanoma [287]. The gene discussed is VEGFA; the disease is neoplasm.