A 10-Week, Open-Label, Flexible Dose Adaptive Study Evaluating the Efficacy of Vortioxetine in Subjects With Panic Disorder

The primary objective of the study is to evaluate the efficacy of Vortioxetine (5, 10, or 20mg) over a period of 10 weeks in subjects with PD, with or without Agoraphobia. The efficacy of Vortioxetine will be evaluated using the Mean Change from Baseline in the Panic Disorder Severity Scale (PDSS) score and the reduction in occurrence of panic attacks as measured by item 1 in the PDSS Scale after 10 weeks of treatment with Vortioxetine. This study is an open-label, adaptive study with flexible dose strategies lasting 10 weeks. Approximately 20 male and female subjects over the age of 18aged 18-60 years who currently meet DSM-IV criteria for PD with or without Agoraphobia or who have a PDSS score \> 8 at Baseline will be enrolled in this study.