First-in-Patient Study for Sing le Dose of M201-A Hydrochloride Injection in Japanese Patients With Paroxysmal Atrial Fibrillation

"Active Substance: M201-A Route of administration: continuous intravenous injection~Step 1: Continuous Intravenous Injection administered with single dose of M201-A hydrochloride or placebo 0.4 mg/kg in 50 mL, controlled with a syringe driver at a rate of 2.5 mL/min for 20 minutes Step 2: Continuous Intravenous Injection administered with single dose of M201-A hydrochloride or placebo 0.6 mg/kg in 50 mL, controlled with a syringe driver at a rate of 2.5 mL/min for 20 minutes (Based on recommendations of an independent data monitoring committee; data and safety monitoring board, it will be decided that dosage is 0.20 mg/kg or 0.40 mg/kg. If appropriate, Step 2 will not be conducted.)"

"Saline Placebo: M201-A Placebo Route of administration: continuous intravenous injection~Step 1: Continuous Intravenous Injection administered with single dose of M201-A hydrochloride or placebo 0.4 mg/kg in 50 mL, controlled with a syringe driver at a rate of 2.5 mL/min for 20 minutes Step 2: Continuous Intravenous Injection administered with single dose of M201-A hydrochloride or placebo 0.6 mg/kg in 50 mL, controlled with a syringe driver at a rate of 2.5 mL/min for 20 minutes (Based on recommendations of an independent data monitoring committee; data and safety monitoring board, it will be decided that dosage is 0.20 mg/kg or 0.40 mg/kg. If appropriate, Step 2 will not be conducted.)"