BMAL1 and post-traumatic stress disorder: The CA1 zone is also a key region involved in the pathogenesis of one of the most well-known stress-related diseases—post traumatic stress disorder (PTSD)—and the increase in the fear extinction time corresponds to the symptom of re-experiencing in this disorder, thereby indicating the predisposition of mice with the Q31L mutation in the Disc1 gene to PTSD-like behavior including due to BMAL1 dysregulation [54,55].