About this trial
This project will define the prevalence of brain health (i.e., normal cognitive, neuromotor, behavioral function) in living professional football retirees and group-matched controls through a comprehensive assessment of clinical, neuroimaging, and biomarker measures.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Professional football retiree aged 29-59
Played a minimum of 3 professional football seasons, with a minimum of 3 games in each season
Fluent in English (translations are not available/validated for most neuropsychological tests)
Age 29-59 male
Disqualifiers
Played organized football beyond high school
History of severe TBI
Current unstable cardiovascular disorder
Prior history of psychosis (such as schizophrenia), or other major neurological disorder that would interfere with testing, in the opinion of the primary investigator.
Trial population
1. Professional Football Players: There will be 2 cohorts of former professional football players in this group: (a) random sample, and (b) non-random sample. 1. Random-Sample participants Recruitment of random-sample former professional football players will be conducted via collaboration with the Football Players Health Study (FPHS) at Harvard University. Subjects for the Brain Health Initiative (BHI) will include a random sample of enrollees in the FPHS who meet basic eligibility for BHI. 2. Non-Random participants: We will also enroll a non-random cohort of former professional football players that will be comprised of volunteers. 2. Controls: There will be 3 cohorts of unexposed controls in this group: (a) friends of former players, (b) brothers or former players, and (c) general population. Football players will be invited to refer friend(s) and/or brother(s), but it is not required for participation.
Trial design
Case-control
Prospective
Treatments tested in this trial
Cognitive/Neuropsychological Testing
Diagnostic testComprehensive testing of cognitive function and brain health.
Vestibular/Ocular-Motor Testing
Diagnostic testA series of tests and questionnaires that asses vestibular function, balance, ocular-motor coordination, and reflexes.
Sleep Evaluation
Diagnostic testA full assessment of sleep health, including insomnia (duration, frequency, daytime consequences) and other sleep disorders such as obstructive sleep apnea. Overnight sleep study is included.
MRI, High-Resolution
Diagnostic testA high-resolution MRI to provide qualitative and quantitative assessments of brain structure.
Health & Physical Exam
Diagnostic testParticipants will undergo an executive history and physical exam of all body systems.
Physical Function
Diagnostic testThese assessments will involve a series of tests and questionnaires that focus on physical function.
Blood Testing and Biomarker Analysis
Diagnostic testA blood draw will be performed to measure standard clinical labs as part of a full history and physical, as well as additional analysis of biomarkers indicative of brain health. An optional lumbar puncture will be performed and CSF samples (20-30 mL) stored in the NCTC Biorepository until shipment to the CLIA-certified laboratory. Both CSF and blood samples will be analyzed for t-tau, p-tau, and Aβ42 and stored for future testing,
Applanation Tonometry
Diagnostic testHearth health is evaluated through testing of arterial stiffness and pulse wave reflections using a high fidelity applanation tonometer.
PET brain imaging
Diagnostic testPET imaging of the brain using tau and amyloid ligands.
[C-11]6-OH-BTA-1
DrugPET imaging of the brain using an amyloid ligand.
[F-18]AV-1451
DrugPET imaging of the brain using a tau ligand.
Treatment groups
Trial outcomes
Primary outcomes
Rates of Brain Health versus Cognitive Impairment
The diagnosis of cognitive impairment is based on the ADRC National Alzheimer's Coordinating Center (NACC) criteria for mild cognitive impairment. This criteria is adjudicated following a comprehensive neuropsychological exam, and includes: (1) Self- or informant-reported cognitive complaint, (2) Objective cognitive impairment, (3) Preserved independence in functional abilities, and (4) No dementia.
Secondary outcomes
Clinical Syndromes of Neurodegeneration
The determination of trauma-related neurodegeneration will be based on: 1) presence of cognitive deficits, and/or neuromotor manifestations, and/or behavioral/mood-related symptoms; 2) PET scans demonstrating abnormal amyloid and/or tau deposition; 3) quantitative MR evidence of cortical volume loss and/or white matter injury; and 4) elevated CSF tau/Aβ42 ratio. These multiple measures will be combined to arrive at a single overall outcome measure. This will be adjudicated at a blinded Diagnostic Consensus Conference comprised of experts from each field.
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
David Okonkwo, MD, PhD
Lead sponsor
University of Pittsburgh
Sponsor institution
National Football League
Collaborator
Avid Radiopharmaceuticals, Inc.
Collaborator
Harvard University
Collaborator