
A former NFL player who killed 6 had 'unusually severe' stage 2 CTE that can change behavior, expert says
CNN
A former NFL player who fatally shot six people before taking his own life in South Carolina this year had "unusually severe" stage 2 CTE, a brain disease linked to head injuries, a Boston University neuropathologist said.
During a Tuesday news conference, Dr. Ann McKee said Phillip Adams, 32, had an extraordinary amount of chronic traumatic encephalopathy (CTE) pathology in both frontal lobes of the brain.
The disease is characterized by an unusual buildup of a protein called tau. Severity of the disease is categorized in four stages based on the amount and location of the tau buildup in the brain. Stage 4 is the most severe.
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