| Completed | 2a | 163 | US | CERC-501, Kappa Opioid Receptor Antagonist; LY2456302, placebo | Duke University, Yale University, Baylor College of Medicine, Indiana University, Icahn School of Medicine at Mount Sinai, Case Western Reserve University | ANXIETY DISORDERS (or Anxiety and Phobic Neuroses) | 11/17 | 12/17 | | |