This study looks at how safe and effective a new medicine called **ABBV-932** is for people with Generalized Anxiety Disorder (**GAD**). GAD is a condition where people feel very worried and anxious most of the time. Usually, doctors treat GAD with medicines called **antidepressant therapies (ADTs)**. However, sometimes these don't work well enough. In this study, people will continue taking their ADTs and add either ABBV-932 or a placebo (a pill with no medicine) for 6 weeks. A placebo is used to compare effects against the real medicine. There is a 1 in 3 chance of getting the placebo. After 6 weeks, there will be a 4-week follow-up to see how people are doing. About 315 adults will participate in this study, which will happen at many hospitals and clinics. During the study, doctors will check how people are feeling, do blood tests, and ask questions to see how the medicine is working.

• The study lasts for 10 weeks (6 weeks of treatment + 4 weeks follow-up).
• Participants may have more doctor visits than usual.
• There might be more side effects than regular treatment.