Jiaxing Antigon Biotechnology Co. Ltd.

Currently, there is only one treatment which only need one single oral dose for influenza in children five years above (Baloxavir marboxil) in China. This study will test a medicine for influenza in children younger than 5 year of age to see if it is safe and effective.
This is a multicenter, randomized, double-blind, controlled Phase III clinical study.
The study evaluates the pharmacokinetics, safety and efficacy of ADC189 tablets/granules following a single oral dose in children aged 2 to 11 years with influenza.

This study aims to answer how repeat doses of itraconazole impact the pharmacokinetics, safety, and tolerability of single doses of ADC189 in healthy adults.
Participants in this study will complete screening assessments within 14 days before the first dose of ADC189. Participants will be admitted to the clinical pharmacology center (CPC) and complete 2 periods of treatments. On Day 1 and 26, each participant will receive a single oral dose of ADC189 (45mg), under fasting condition On Day 22, all participants will receive oral doses of itraconazole 200 mg (bid), after meal. From Day 23 to Day 25, and Day 26-D39, participants will receive itraconazole 200 mg(qd). Blood and safety assessments will continue for 336-hours after dosing on Day 1 and Day 26. Participants will receive a telephone follow-up on D47 (±3) days for a final visit.

This study aims to evaluate the pharmacokinetics, pharmacodynamics, safety, and tolerability of ADC189 in subjects with hepatic impairment compared with subjects with normal hepatic function.