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Aaron Hernandez found to have severe CTE; family is suing NFL, Patriots

Researchers at Boston University determined that former New England Patriots tight end Aaron Hernandez had stage 3 chronic traumatic encephalopathy, or CTE, and according to Hernandez’s lawyer, it was the most advanced case they had seen in a player as young as Hernandez.

Hernandez, who was in a Massachusetts prison serving a life sentence for committing murder but was acquitted of committing two others, killed himself in his cell in April. He was 27.

In this April 1, 2015 file photo, former New England Patriots player Aaron Hernandez is led into the courtroom at Bristol County Superior Court in Fall River, Mass., for his murder trial in the 2013 killing of Odin Lloyd. Hernandez’s lawyer said Thursday Hernandez’s brain showed severe signs of the degenerative brain disease CTE. (AP)

Hernandez’s brain was examined by Dr. Ann McKee, who is director of the CTE Center at Boston University and also chief of neuropathology at the VA Boston Healthcare System, as well as a second neuropathologist from VA Boston. McKee has developed categories to describe the severity of CTE, which can only be found posthumously: stage 3, which she found in Hernandez, involves cognitive impairment and trouble with executive functions, like planning and organizing. Additionally, they found early brain atrophy and large perforations of the septum pellucidum, a central membrane of the brain.

According to a statement from McKee’s team at the CTE Center and Boston University, the photo below shows “the classic features of CTE in the brain of Mr. Hernandez. There is severe deposition of tau protein in the frontal lobes of the brain (top row). The bottom row shows microscopic deposition of tau protein in nerve cells around small blood vessels, a unique feature of CTE.”

Cross-sections of the brain of Aaron Hernandez, showing areas of tau protein buildup. (BU CTE)

McKee’s team thanked Hernandez’s family for donating his brain. Attorney Jose Baez announced the findings at a Thursday press conference, where he also announced that he would be suing the NFL and Patriots in federal court on behalf of Hernandez’s now-4-year-old daughter Avielle.

There was no mention of how much money Baez is seeking from the two organizations, nor why other groups, like the University of Florida, where Hernandez played for three years, or Bristol Central High School in Connecticut, where he played as a prep standout.

A fourth-round draft pick in 2010, Hernandez was a dynamic offensive weapon for the Patriots when he was healthy, but trouble had long followed him, and it seemed to intensify over the final few years of his brief, tormented life. Hernandez never seemed to recover from his father’s death when he was 16. In 2015, he was convicted of killing a friend, Odin Lloyd, two years earlier; just a few days before killing himself, he was acquitted in the deaths of two other men, Safiro Furtado and Daniel Abreu, whom he was accused of killing near a Boston nightclub where all three had been earlier on the evening of Furtado and Abreu’s death.

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