CGC-11047 is a polyamine analog designed to halt cell growth and induce apoptosis of cancer cells. In preclinical models CGC-11047 significantly inhibited tumor development in both lung and prostate cancer models when administered as a single agent. In the lung cancer model, CGC-11047 potentiated the antitumor effect of cisplatin. Although potent activity was observed with CGC-11047 and bevacizumab when administered as single agents in the prostate cancer model, the combination arm significantly enhanced antitumor activity compared with either agent alone. In all experiments, CGC-11047 was well tolerated with no adverse effects on bodyweight gain.