HMPL-689 Drug Interaction Study With CYP3A Inhibitor/CYP2C9 Inhibitor/CYP3A Inducer/PPI

A phase 1, open-label, 4-part, 2-period, fixed-sequence study to assess the effect of Itraconazole, a strong CYP3A inhibitor, the effect of Fluconazole, a moderate CYP3A/2C9 inhibitor, the effect of Rifampin, a strong CYP3A inducer, and the effect of Rabeprazole, a proton pump inhibitor on the pharmacokinetics (PK) of a single oral dose of HMPL-689 in study participants. The secondary objective is to evaluate the safety of a single oral dose of HMPL-689 administered with and without Itraconazole, Fluconazole, Rifampin, or Rabeprazole in study participants.