A Two-Part Phase 1 Study to Investigate the Safety and Tolerability of Supratherapeutic Dose of Zanubrutinib and Effect of Zanubrutinib on Cardiac Repolarization in Healthy Subjects

This is a Two-Part Phase 1 Study. Part A: This is a randomized, placebo-controlled, double blind, single dose study to evaluate the safety and tolerability of a single oral supratherapeutic dose of zanubrutinib in eight (8) subjects. Part B: This is a randomized, placebo and positive-controlled, double-blind, 4-way crossover study being conducted in about 28 subjects to investigate the effect of a single therapeutic dose of zanubrutinib, a supratherapeutic dose of zanubrutinib and placebo on cardiac repolarization. Open-label Moxifloxacin (400 mg), a fluoroquinolone broad spectrum antibiotic will be used as a positive control.