RGS2 and panic disorder: Genetic variants within the RGS2 gene have been associated with different neuropsychiatric diseases such as anxiety disorders across multiple levels of assessment (childhood temperament, adult personality, and brain function; Smoller et al., 2008; Le-Niculescu et al., 2011; Gottschalk and Domschke, 2017) and panic disorder (Hohoff et al., 2015).