A Study of TAK-279 in Healthy Adults on the Effect on ECG Measurements

The main aim of this study is to find out how more than one dose of TAK-279 changes the heart-rate corrected QT (QTc) interval of healthy adults. A QTc interval is a measurement on an electrocardiogram (ECG) and shows the time when the heart contracts until it finishes relaxing. Other aims are to learn about the effect of several doses of TAK-279 on other ECG measurements of healthy adults, how the body of a healthy adult processes TAK-279 and moxifloxacin (pharmacokinetics), and to learn about the side effects of TAK-279 and how well it is tolerated when given to healthy adults. The participants will be given TAK-279 and moxifloxacin or a placebo for 7 days. During the study, participants will need to stay at the clinic for 10 days.