Development of the Monoclonal Antibody Figitumumab, Targeting the Insulin-like Growth Factor-1 Receptor, for the Treatment of Patients with Non–Small-Cell Lung Cancer

Figitumumab (CP-751,871) is a fully human immunoglobulin G2 monoclonal antibody highly potent and specific against the insulin-like growth factor-1 receptor. Figitumumab has an effective half-life of approximately 20 days, and it has been well tolerated in clinical studies when given alone or in combination with chemotherapy and targeted agents. Mild to moderate asymptomatic hyperglycemia is observed with figitumumab therapy, but it is generally manageable and well tolerated. Because of its extended half-life and absence of dose-limiting toxicity and hypersensitivity, figitumumab compares well to other compounds in its class. Furthermore, recent data suggest that figitumumab might be active in combination with platinum doublets for the treatment of chemotherapy-naive Non–Small-cell lung cancer (NSCLC). This article discusses the results to date of the figitumumab development program and the rationale for further testing of this agent as a therapeutic option for the treatment of patients with NSCLC.