An Open-label, Phase 1 Dose Escalation Study of Oral ASP8273 in Subjects With Non-Small-Cell Lung Cancer (NSCLC) Who Have Epidermal Growth Factor Receptor (EGFR) Mutations

The purpose of this study is to assess the safety and tolerability of ASP8273 and to determine the maximum tolerated dose (MTD) and/or recommended Phase 2 dose (RP2D). This study will also determine the pharmacokinetics (PK) of ASP8273, evaluate the potential inhibition of CYP3A4 by ASP8273 and the antitumor activity of ASP8273 as well as determine the effect of food on the bioavailability of ASP8273.