This is a Phase 1 open-label, parallel-group study in healthy subjects. Subjects in Part A will receive a single dose of BGB-3111 before and during consecutive daily doses of strong cytochrome P450 CYP3A inducer, rifampin, to investigate its effect on the pharmacokinetics of BGB-3111. Following an interim data analysis, subjects in Part B will receive a single dose of BGB-3111 before and during consecutive daily doses of strong CYP3A inhibitor, itraconazole, to investigate its effect on the pharmacokinetics of BGB-3111.