The strategy for combining therapeutic agents in cancer treatments has been successful in multiple tumor types, including NSCLC. Erlotinib and bevacizumab target different pathways involved in tumor growth. Nonclinical studies have demonstrated that the combination of bevacizumab and erlotinib results in greater efficacy than either agent alone. Furthermore, because there is little to no overlap in toxicity profile between the two agents, the combination is expected to be well tolerated and may provide even greater benefit for patients who are unable to receive cytotoxic therapy.