Lung cancer remains the leading cause of cancer-related mortality in men and women worldwide. Non-small cell lung cancer (NSCLC) accounts for approximately 80% of all lung cancer. The development of targeted therapies has changed the approach to treating NSCLC significantly over the past decade with targeted therapies generally possessing safety advantages over traditional cytotoxic regimens. However, combination paradigms and resistance patterns complicate the use of these agents. CRLX101 is a nanoparticle comprised of camptothecin (CPT) conjugated to a cyclodextrin-based polymer. CRLX101 is designed to increase the exposure of tumor cells to CPT while minimizing side effects.