![CTE Found in Nearly All Donated NFL Brains Dr Ann McKee CTE Found in Nearly All Donated NFL Brains Dr Ann McKee](https://www.brainline.org/sites/default/files/research/CTE%20Found%20in%20Nearly%20All%20Donated%20NFL%20Brains_McKee.jpg)
Chronic traumatic encephalopathy (CTE) is a progressive degenerative brain disease associated with repetitive head trauma. Currently, CTE can only be confirmed post-mortem. In a new study from JAMA, researchers examined the brains of 202 deceased former football players and talked to their family members to identify pathological and clinical features of CTE.
In a convenience sample of 202 deceased players of American football from a brain donation program, CTE was neuropathologically diagnosed in 177 players across all levels of play (87%), including 110 of 111 former National Football League players (99%).
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