Anxiety Disorders (Pediatric)

October 17, 2016

Bionomics issued results of a single-center, double-blinded, placebo and lorazepam-controlled, four-way, cross-over, phase II clinical trial of BNC210 conducted in 24 patients with untreated generalized anxiety disorder (GAD). The objective of the study was to evaluate the capacity of BNC210 to engage brain systems relevant to anxiety while resting and in response to anxiety-related tasks. The co-primary endpoints were a change in cerebral perfusion measured by arterial spin labelling and a change in task-related brain activity, specifically in the amygdala as measured by functional Magnetic Resonance Imaging (fMRI) during the Emotional Faces Task (EFT). The results of the study show that BNC210 induced statistically significant changes in cerebral perfusion (300mg BNC210, p<0.05) and also significantly reduced amygdala activation in response to fearful faces during the EFT (300mg BNC210, p<0.05). In comparison, lorazepam exerted a modest suppressive effect on amygdala activation during performance of the EFT (1.5mg lorazepam, p=0.069). A secondary endpoint of the trial was to determine the effect of BNC210 on defensive behaviour using the Joystick Operated Runway Task (JORT) which uses a force-sensing interface to obtain an objective measure of the intensity of threat avoidance motivation. BNC210 administration was associated with a significant decrease in the intensity of threat avoidance behaviour (300mg BNC210, p=0.007; 2,000mg BNC210, p=0.033). BNC210 outperformed lorazepam in this regard (1.5mg lorazepam, p=0.165).