 The purpose of this study is to evaluate the potential inhibitory effects of ceritinib on the CYP3A4- and CYP2C9-mediated metabolism of the probe drugs midazolam and warfarin, respectively, when administered simultaneously as a cocktail. The results obtained from this drug interaction study will provide guidance that will enable an update to the ceritinib labeling and will help guide recommendations for administration of co-medications in future clinical trials. 