About CTE

The CTE Center is part of the Boston University Alzheimer’s Disease Center (BU ADC), established in 1996 as one of 29 centers in the US funded by the National Institutes of Health to advance research on Alzheimer’s disease and related conditions. In collaboration with other NIH-funded ADC’s and the non-profit Concussion Legacy Foundation formerly known as the Sports Legacy Institute, CTE Center conducts high-impact, innovative research on Chronic Traumatic Encephalopathy and other long-term consequences of repetitive brain trauma in athletes and military personnel. The mission of the CTE Center is to conduct state-of-the-art research on CTE, including its neuropathology and pathogenesis, clinical presentation, genetics and other risk factors, biomarkers, methods of detection during life, and methods of prevention and treatment.

Click here to learn more about the research going on at the CTE Center

The Clinical Research Program is located at:
BU School of Medicine in the Robinson Complex, Suite 7800, Boston, MA 02118
Map and Directions to the BU Medical Campus
Directions from the BU School of Medicine Main Entrance to the CTE Center Offices

The CLF-BU CTE Brain Bank is located at:
The Bedford Veterans Administration Medical Center, 200 Springs Rd, Bedford, MA 01730
Please view our facility map to see the locations of our parking lots, handicapped parking areas, and facility buildings.

Chronic Traumatic Encephalopathy (CTE) is a progressive degenerative disease of the brain found in athletes (and others) with a history of repetitive brain trauma, including symptomatic concussions as well as asymptomatic subconcussive hits to the head. CTE has been known to affect boxers since the 1920s. However, recent reports have been published of neuropathologically confirmed CTE in retired professional football players and other athletes who have a history of repetitive brain trauma. This trauma triggers progressive degeneration of the brain tissue, including the build-up of an abnormal protein called tau.  These changes in the brain can begin months, years, or even decades after the last brain trauma or end of active athletic involvement.  The brain degeneration is associated with memory loss, confusion, impaired judgment, impulse control problems, aggression, depression, and, eventually, progressive dementia.

In both sets of photographs, above, the brain tissue has been immunostained for tau protein, which appears as a dark brown color. Tau immunostained sections of medial temporal lobe from 3 individuals

  • Top left: Whole brain section from a 65 year old control subject showing no tau protein deposition
  • Bottom left: Microscopic section from 65 year old control subject also shows no tau protein deposition
  • Top middle: Whole brain section from John Grimsley showing abundant tau protein deposition in the amygdala and adjacent temporal cortex
  • Bottom middle: Microscopic section showing numerous tau positive neurofibrillary tangles and neurites in the amygdala
  • Top right: Whole brain section from a 73 year old world champion boxer with severe dementia showing very severe tau protein deposition in the amygdala and thalamus
  • Bottom right: Microscopic section from a 73 year old world champion boxer with severe dementia showing extremely dense tau positive neurofibrillary tangles and neurites in the amygdala

To read the CTE Center’s seminal medical journal article reviewing all pathologically described cases of CTE in the literature through 2009 [PDF]