COLUMBIA, S.C. (AP) — The brain of the former NFL player who killed five people in South Carolina before fatally shooting himself will be tested for a degenerative disease that has affected a number of pro athletes. Chronic traumatic encephalopathy has been shown to cause violent mood swings and other cognitive disorders. York County Coroner Sabrina Gast told McClatchy Newspapers on Friday that she had gotten approval from Phillip Adams’ family for the procedure to be included as part of his autopsy. The Medical University of South Carolina will be working with Boston University, which has a CTE Center. According to its website, the center conducts research on the long-term effects of repetitive brain trauma in athletes and military personnel.