A Thorough QT (TQT) Study of CHF5993 pMDI in Healthy Volunteers (HV)

The main purpose of this study is to evaluate the effect of a single supratherapeutic dose of inhaled BDP/FF/GB on cardiovascular safety. The secondary purposes of the study are to: 1) evaluate the effect of a single supratherapeutic dose of inhaled BDP/FF/GB and GB on cardiovascular safety; 2) establish assay sensitivity by demonstrating the effect of a single oral dose of 400 mg moxifloxacin on cardiovascular safety; 3) determine the pharmacokinetics (PK) of single, inhaled therapeutic and supratherapeutic BDP/FF/GB doses and supratherapeutic GB dose; 4) determine if there is a relationship between the duration of the QTc intervals and the plasma concentrations of the B17MP (beclomethasone 17monopropionate active metabolite of BDP), FF and GB following the administration of BDP/FF/GB and GB pMDIs; 5) generate additional safety and tolerability information.