Besides association with panic disorder, a number of susceptibility genes have been found to associate with other subtypes within anxiety disorders as well, such as the serotonin system in OCD and neuroticism [134-139], MAOA in generalized anxiety disorder and neuroticism [140, 141], COMT in neuroticism and phobic anxiety [141, 142] and BDNF in anxiety-related personality traits [143, 144].
