Clinical Research Directory

Critical Hyperacute Assessment Research On Neurobiomarker Kinetics in Acute Brain Injury

Traumatic brain injury (TBI) and other conditions that reduce blood flow to the brain - such as cardiac arrest (CA) - are life-threatening medical emergencies. When brain cells are damaged, they release specific proteins into the bloodstream. These proteins, called neurobiomarkers, can be measured in blood samples and may help doctors assess the severity of brain injury, guide treatment, and predict patient outcomes. A major gap in current knowledge is how these neurobiomarkers behave during the very first minutes and hours after injury - the so-called "hyperacute" phase - especially when patients are still being treated by paramedics or have just arrived at the emergency department (ED). It is not yet clear whether biomarker levels rise immediately at the moment of injury or gradually over time, and how quickly they can be reliably detected. The CHARON study investigates the time-dependent kinetics of key neurobiomarkers - including S100B, glial fibrillary acidic protein (GFAP), neuron-specific enolase (NSE), ubiquitin carboxy-terminal hydrolase L1 (UCH-L1), neurofilament light chain (NFL), and Tau proteins- during the hyperacute phase of acute brain injury. In addition to these proteins, microRNAs, polar metabolites, and lipid metabolites are also examined as potential biomarkers. The study enrolls three groups of participants: * Patients with severe traumatic brain injury and/or polytrauma treated in the prehospital setting and admitted to the ED with T1 (highest priority) triage classification. * Patients with CA treated (resuscitated) in the prehospital setting. * Patients with severe traumatic brain injury enrolled at hospital (ED) admission. Serial blood samples are collected at multiple time points, beginning during prehospital care and continuing through the first 24 hours of hospital admission. No experimental treatments are given - all participants receive standard medical care. By analyzing biomarker concentration and kinetics across all three groups and correlating findings with neurological outcome at 30 days, the investigators aim to identify the most clinically effective neurobiomarkers for early diagnosis and prognosis of acute brain injury. The study is a prospective multi-center investigation conducted at emergency departments, intensive care units, and ambulance services across Hungary.

HITT for the Identification of Mild Traumatic Brain Injury

Rebion has developed a device, the Rebion trauma tool (referred to as the head and intraocular trauma tool, or "HITT"), that detects ocular fixation and alignment using a binocular retinal scan. Preliminary data obtained from hospitalized patients with a clinically-confirmed traumatic brain injury (TBI) and uninjured controls indicates that the device can detect changes in ocular fixation, alignment, and saccades that are related to brain injury. This study seeks to evaluate the ability of the Rebion trauma tool to assess perturbations in eye movements resulting from TBI. The study will enroll 100 TBI patients and 100 controls.

Head and Intraocular Trauma Tool for the Identification of Mild Traumatic Brain Injury

Rebion has developed a device, the Rebion trauma tool (referred to as the head and intraocular trauma tool, or "HITT"), that detects ocular fixation and alignment using a binocular retinal scan. Preliminary data obtained from hospitalized patients with a clinically-confirmed traumatic brain injury (TBI) and uninjured controls indicates that the device can detect changes in ocular fixation, alignment, and saccades that are related to brain injury. This study seeks to evaluate the ability of the Rebion trauma tool to assess perturbations in eye movements resulting from TBI. The study will enroll 100 TBI patients and 100 controls.

Multimodal Assessment and Prognosis in Disorders of Consciousness After Severe Brain Injury (CyDoC-MAP)

After a severe brain injury some patients survive but cannot communicate, and deciding early which of them are likely to recover consciousness remains one of the hardest problems in neurocritical care. Bedside examination alone misclassifies a substantial proportion of these patients. CyDoC-MAP is a single-centre, prospective, observational cohort study conducted at Nicosia General Hospital, the sole trauma referral centre for Cyprus. It enrols patients aged 16 years or older who are intubated within 24 hours of a moderate-to-severe traumatic brain injury or a haemorrhagic stroke (intracerebral or subarachnoid haemorrhage), and who are subsequently classified as being in a vegetative state / unresponsive wakefulness syndrome (VS/UWS) or a minimally conscious state (MCS) on the Coma Recovery Scale-Revised (CRS-R). Four assessment modalities are recorded: (1) the CRS-R, performed at least twice with an interval of at least 48 hours; (2) serum neuron-specific enolase (NSE) sampled within 24 hours of intubation; (3) the bispectral index (BIS), recorded at least twice with an interval of at least 48 hours, after five minutes of standardised noxious and auditory stimulation; and (4) in the traumatic subgroup only, 1.5 T magnetic resonance imaging performed 7-28 days after injury and graded 1-4 by lesion depth by two independent raters. Level of consciousness is reassessed with the CRS-R 6 to 12 months after the index event, and the total CRS-R score (0-23) at that reassessment is the primary outcome. The primary aim is to estimate the strength of the association between the bispectral index recorded on the ward and that later CRS-R score, and to quantify what the bispectral index adds beyond the baseline clinical assessment. The number of eligible patients at a single national centre does not support the development of a prognostic model; the study is designed to produce effect-size estimates with confidence intervals that will inform a subsequent multicentre study. The study is purely observational. No intervention is administered, no study procedure alters clinical management, and transfer to rehabilitation is never delayed for research purposes.

Wellness and Quality of Life Perceptions of People With Traumatic Brain Injury

Telerehabilitation is a service delivery method that has grown substantially in recent years. It has both advantages and disadvantages in comparison to clinic-based services. For example, telerehabilitation is advantageous for people residing in locations in which specialized rehabilitation services are scarce; however, it has the disadvantage of being dependent on reliable internet connections that are not available in all locations. Also, some people prefer the privacy afforded by receiving treatment in their home, but other people prefer the interaction with other clients with similar challenges afforded by attending sessions in clinic-based settings. Other questions about advantages and disadvantages of telerehabilitation remain unexplored. One such question is the focus of this research and concerns the effect of receiving post-acute telerehabilitation services versus clinic-based services on the general well-being and quality of life experienced by people with traumatic brain injury. The study purpose is to compare changes in wellness and quality of life occurring over a four-month period during which people with traumatic brain injury receive post-acute services either via telerehabilitation or at an outpatient facility.

The HOME Program for Individuals With Traumatic Brain Injury and Family Members

This purpose of this study is to evaluate an innovative rehabilitation intervention for persons with chronic TBI-related symptoms (1 year or more post injury) and their families. The primary study aims are to 1) test the intervention's effects on patients' community reintegration, quality of life, and ability to manage self-identified TBI problems at the completion of the intervention and 2) test the intervention's effects on family caregivers' depressive symptoms, burden, and met family needs at the completion of the intervention. Based on the person-environment fit framework, HOME (Home-based Occupational-therapy and Management of the Environment) for Us is a 4-month, 8-session intervention delivered by occupational therapists in the home. HOME targets the home environment (physical and social) to realign environmental demands to individual strengths and deficits. HOME engages persons with TBI and family caregivers in strategies to manage chronic TBI symptoms or related difficulties. It educates family members to reinforce and maintain intervention strategies, and addresses family needs. HOME is distinct from standard TBI rehabilitation with respect to who (persons with TBI and families), what (targeting the environment for intervention), when (chronic phase), and where (the home). Patients with chronic TBI symptoms and their family caregivers represent a growing but underserved population. This study has the potential to benefit over 5.3 million persons who live with disabilities from TBI and their family caregivers and to transform the paradigm of care for TBI.

Socio-Cultural Level, Health Literacy, and Parental CT Demand in Paediatric Minor Head Trauma

Minor head trauma is one of the most frequent reasons for paediatric emergency department visits worldwide. The PECARN (Paediatric Emergency Care Applied Research Network) clinical decision rule stratifies children with minor head trauma into low-, intermediate-, and high-risk categories for clinically important traumatic brain injury (ciTBI) and provides evidence-based guidance on computed tomography (CT) ordering. Despite its high diagnostic accuracy, real-world CT utilisation frequently diverges from PECARN recommendations. Non-clinical family-level factors - including socio-cultural characteristics and health literacy - may drive part of this divergence, particularly through their influence on whether families explicitly request CT imaging. This prospective observational cohort study will enrol 200 children with minor head trauma presenting to the emergency department of SBU Bursa Yuksek Ihtisas EAH, Bursa, Turkey. The primary aim is to determine whether family socio-cultural level (composite index incorporating education, occupation, income, and housing; scored 0-10) and health literacy (Newest Vital Sign-Turkish, NVS-TR) independently predict parental demand for CT imaging. Secondary aims include determining whether parental CT demand and family socio-cultural characteristics predict CT ordering by the treating physician, describing PECARN algorithm adherence patterns in this setting, and examining parental health-seeking behaviour at 7-day telephone follow-up.

Scale-Up Evaluation Trial of the Diabetes Prevention Program to Improve Obesity and Cardiometabolic Health After Traumatic Brain Injury

The Investigators have proposed targeted efforts to address the feasibility, effectiveness, fidelity, and evaluation of the GLB-TBI Evidence Based Intervention (EBI) in a real world setting at a CDC-recognized site

Proteomics of Brain Trauma-associated Elevated Intracranial Pressure (ICP)

The specific aim of this research is to determine if the blood from brain-injured patients contains reproducible protein markers that appear prior to elevations in intracranial pressure (ICP).

Automated Robotic TCD in Traumatic Brain Injury

This study's objective is to determine the safety, feasibility and efficacy of prolonged automated robotic TCD monitoring in critically ill patients with severe TBI across multiple clinical sites with varying levels of TCD availability and experience

The DIAGNOSE CTE Research Project-II

Each year, millions of people are exposed to repetitive head impacts (RHI) through contact sports. RHI can result in concussions and asymptomatic non-concussions to confer risk for Alzheimer's disease (AD) and related dementias (ADRD) including chronic traumatic encephalopathy (CTE). Presently, a diagnosis of CTE can only be rendered at autopsy and it has been neuropathological diagnosed in several hundreds of American football players particularly those who played at elite levels (college and professional). The ability to make an accurate diagnosis of CTE is needed to facilitate research on risk factors, mechanisms, prevention, and treatment. In 2015, the investigators were awarded a NINDS funded 7-year U01 known as the DIAGNOSE CTE Research Project (NCT02798185) designed to develop biomarkers, characterize the clinical presentation, and examine genetic and RHI risk factors for CTE. This current 5-year NIH funded multicenter study DIAGNOSE CTE Research Project-II will build on and extend those findings.

Light Therapy to Improve Sleep in TBI: Sleep-active Biomarkers and Glymphatic Function

This is a clinical trial designed to examine how improved sleep through morning bright light therapy is improving downstream key physiologic processes related to brain health, i.e., mitochondrial function, systemic inflammation, and glymphatic function. All proposed methodology is already approved in other IRB applications.

mTBI Identification and Monitoring Through Retinal Scanning

Rebion has developed a device, the Rebion trauma tool (referred to as the head and intraocular trauma tool, or "HITT"), that detects ocular fixation and alignment using a binocular retinal scan. Preliminary data obtained from hospitalized patients with a clinically-confirmed traumatic brain injury (TBI) and uninjured controls indicates that the device can detect changes in ocular fixation, alignment, and saccades that are related to brain injury. This study seeks to evaluate the ability of the Rebion trauma tool to assess perturbations in eye movements resulting from TBI. The study will enroll 60 TBI patients and 20 controls.

Mild TBI Assessment & Rehabilitation

One of the most pressing concerns within the VA currently is the provision of interventions that address the cognitive as well as emotional problems faced by Veterans with mild TBI and comorbid conditions. When completed, these studies will inform us whether training core attentional self-regulatory control functions via personally-relevant activities will be effective in improving daily life for Veterans with mild TBI and comorbid conditions. The study design will provide a test not only of potential benefits for real life functioning, but also determine to what extent these benefits are related to actual changes in cognitive/behavioral performance and brain networks corresponding to these functions. This project will provide a foundation for future studies to investigate the neural mechanisms that support improvements of cognition and behavior in mTBI.

Buspirone and Melatonin for Depression Following Traumatic Brain Injury

Traumatic brain injuries (TBIs) are common. Post-TBI depression is associated with anxiety, aggression, fatigue, distractibility, anger, irritability, and rumination. The current research group conducted a pilot clinical trial, which investigated the novel treatment combination of buspirone and melatonin (B+MEL) in outpatients with clinical depression. Compared to placebo, B+MEL was associated with a significant improvement in depressive symptoms. Depression following TBI may be different from clinical depression. The B+MEL combination has never been studied in patients with post-TBI depression. The B+MEL has shown promise in ameliorating cognitive difficulties in people with depression. Because cognitive problems are typical in people with post-TBI depression, we plan to measure the effect of the B+MEL combination on cognitive ability in post-TBI depression. Additionally, we are interested in measuring functional magnetic resonance imaging changes before and after treatment with B+MEL in order to gain insight into the brain mechanisms of our hypothesized clinical symptom changes. The goals of the proposed pilot research project are to assess changes in symptoms in patients with post-TBI depression following Buspirone + Melatonin combination (B+MEL), and the corresponding brain mechanisms underlying these hypothesized changes by measuring: 1) depressive symptoms; 2) cognitive symptoms; 3) functional magnetic resonance imaging.

Brain Oxygen Optimization in Severe TBI, Phase 3

BOOST3 is a randomized clinical trial to determine the comparative effectiveness of two strategies for monitoring and treating patients with traumatic brain injury (TBI) in the intensive care unit (ICU). The study will determine the safety and efficacy of a strategy guided by treatment goals based on both intracranial pressure (ICP) and brain tissue oxygen (PbtO2) as compared to a strategy guided by treatment goals based on ICP monitoring alone. Both of these alternative strategies are used in standard care. It is unknown if one is more effective than the other. In both strategies the monitoring and goals help doctors adjust treatments including the kinds and doses of medications and the amount of intravenous fluids given, ventilator (breathing machine) settings, need for blood transfusions, and other medical care. The results of this study will help doctors discover if one of these methods is more safe and effective.

The Feasibility of Home-Based Measurement of Circadian Timing for Veterans With TBI and Insomnia

Veterans with traumatic brain injury (TBI) frequently experience insomnia, which is linked with delayed TBI recovery, more severe functional impairment, and exacerbation of disabling TBI after-effects such as depression, chronic pain, and fatigue. Current research suggests that TBI can impact numerous systems involved in sleep, suggesting that insomnia can have various causes and that a "one-size-fits-all" approach to treatment is likely inadequate. As such, it is necessary to determine which Veterans may benefit from standard evidence-based treatments, such as Cognitive Behavior Therapy for Insomnia, and which may require enhanced treatments targeting specific underlying mechanisms. An emerging body of evidence has established a link between circadian rhythm disruption and post-TBI insomnia. A mismatch between circadian and desired sleep timing (i.e., "circadian misalignment") is common following TBI, as evidenced by disruptions of key circadian rhythms involved in sleep regulation (e.g., melatonin production), as well as the onset of circadian rhythm sleep-wake disorders. Importantly, circadian-driven sleep disturbances require specialized treatments that target circadian rhythms (i.e., "chronotherapies"), such as timed sleep windows or enhanced light exposure, as standard treatment approaches can fail to address or even exacerbate the underlying circadian misalignment. Thus, circadian misalignment represents a novel and modifiable treatment target and has the potential to improve functional outcomes in Veterans with TBI and insomnia. Detection of circadian misalignment and optimal use of chronotherapies require the ability to measure circadian phase (i.e., timing of the central circadian clock). However, current sleep medicine in TBI is hampered by a lack of pragmatic options for measuring circadian phase. This is because laboratory dim light melatonin onset (DLMO), the gold standard measure of circadian phase, is time and cost prohibitive, requiring specialized sample (e.g., saliva) collection facilities and placing substantial burden on the patient. Recently, novel methods of DLMO measurement have been developed that may enhance the accessibility and practicality of circadian phase assessment, although, as of yet, they have not been used in Veterans with TBI. The proposed single-arm, longitudinal study seeks to evaluate the feasibility of two methods of measuring DLMO in the home environment of Veterans with TBI and insomnia: 1) direct measurement of self-collected salivary melatonin; and 2) indirect estimation of DLMO using activity and light-exposure data collected through actigraphy. Additionally, this study seeks to explore the relationships between circadian misalignment, sleep disturbance, and functional impairment in Veterans with TBI. The specific aims of this study are to: Aim 1) evaluate the feasibility of two methods of home DLMO measurement (i.e., self-collected salivary melatonin and actigraphy data) in Veterans with TBI and insomnia; and Aim 2) examine associations between circadian misalignment (i.e., the difference in timing between DLMO and attempted sleep onset), sleep disturbance, and functional impairment. Veterans with TBI and insomnia will be asked to wear a wrist-based actigraphy device for one week, which will collect data on light exposure and sleep-wake states. They will then be asked to self-collect seven hourly saliva samples under dim light conditions in their own home and mail them to a testing facility using a provided pre-paid shipping label. Saliva samples will be used to directly measure DLMO and actigraphy data will be used to indirectly estimate DLMO using established mathematical models of the human circadian pacemaker. Evaluating the feasibility of home DLMO measurement is a crucial first step for enhancing precision sleep medicine for Veterans with TBI and insomnia. Findings will inform the development and testing of tailored sleep interventions for use with this patient population.

HOme-Based Self-management and COgnitive Training CHanges Lives (HOBSCOTCH) -Post-Traumatic Epilepsy (PTE)

The purpose of this study is to assess the ability of the home-based intervention, HOBSCOTCH-PTE, to improve the quality of life and cognitive function in Service Members, Veterans and civilians with post traumatic epilepsy (PTE). This study will also assess the ability of the HOBSCOTCH-PTE program to improve quality of life in caregivers of PTE patients and to reduce caregiver burden.

Brain Injury Education and Outpatient Navigation-1stBIEN

Traumatic brain injury (TBI) is a significant problem for U.S. Hispanic children. Compared to non-Hispanic children, Hispanic children have higher long-term disability and lower health related quality of life, even though differences are not present at hospital discharge. Rehabilitation decreases disability, but needs timely initiation, and long treatments in hospitals, community healthcare facilities and schools. Parents play a key role in their child's recovery. Hispanic parents face additional barriers to initiate and maintain outpatient treatments. They report knowledge gaps in TBI-education, community, and school support systems; language and health literacy barriers. The investigators developed, a bilingual bicultural theory-based program for Hispanic families consisting of Brain Injury Education and outpatient care Navigation (1st BIEN). It integrates in-person education enriched by video content delivered through mobile phones, with navigation during transitions to outpatient care and school return. The pilot established feasibility and acceptability of the program. This randomized control trial will determine efficacy to maintain long-term adherence to rehabilitation and reduce disability. It will enroll 150 parent-child dyads: children (6-17 y), with mild-complicated, moderate-severe TBI in 5 centers in Washington, Texas, Dallas, Utah and Oregon and their parents. Intervention group parents receive: One in-person education session, plus bi-weekly videos tailored to the child's TBI and therapies; and, 3-months of bilingual outpatient care navigation. Attention control parents receive one in person-education session, monthly well-child texts and usual institutional follow up care. Primary outcome is treatment adherence at 6 months post-discharge measured by percentage of follow-up appointments attended during the prescribed time at hospitals, and community care facilities. Secondary outcomes are functional status of the child using PROMIS parental report measures; and parental health literacy, self-efficacy, and mental health at 3, 6, and 12 months after discharge. Child's academic performance will be assessed using school records. The study evaluates a flexible and scalable intervention using mobile phones to aid transitions of care, improve treatment adherence and TBI outcomes. It addresses the needs of an understudied population and can serve as a model for TBI family centered care for at risk groups.

Traumatic Injury Clinical Trial Evaluating Tranexamic Acid in Children: An Efficacy Study

Trauma is the leading cause of death and disability in children in the United States. The objective of this study is to evaluate the benefits and harms of tranexamic acid (TXA; a drug that stops bleeding) in severely injured children with hemorrhagic brain and/or torso injuries. Using thromboelastography, we will measure baseline fibrinolysis to assess for treatment effects of TXA at different levels of fibrinolysis.

Morning Bright Light to Improve Sleep Quality in Veterans

One of the principal complicating factors associated with traumatic brain injury (TBI) is sleep-wake disturbances (e.g., insomnia, excessive daytime sleepiness, and circadian rhythm sleep disorders). Morning bright light therapy (MBLT) has been shown to improve sleep quality in a variety of conditions, but little has been done investigating the utility of MBLT in improving sleep in Veterans with TBI. This proposal aims to determine the effect of MBLT on sleep quality in Veterans with TBI. Veterans with and without TBI will be recruited from the VA Portland Health Care System. Baseline questionnaires and 7 days of actigraphy will be collected prior to engaging in 60 minutes of MBLT daily for 4 weeks, during which actigraphy will also be collected continuously. Post-MBLT questionnaire data will be collected, and follow-up questionnaire data will be collected at 3 months post-MBLT.

Remotely Supervised tDCS+ for Complex Attention in mTBI (Cognetric)

The proposed study will evaluate a new approach to cognitive rehabilitation of mTBI using a brain stimulation technique called "Remotely Supervised Transcranial Direct Current Stimulation combined with Cognitive Training" (RS-tDCS+) which has shown promise for improving complex attention in both healthy and clinical populations. RS-tDCS+ is a home-based, low-risk, non-invasive technique that is designed to boost cognitive training by enhancing learning and the brain's ability to reorganize connections. This study will evaluate RS-tDCS+ for improving complex attention in Active Duty Service Members (ADSM) and Veterans with a history of mTBI. Different tests of complex attention and symptom questionnaires will be used to determine the effects of real versus sham (placebo) RS-tDCS+. Second, the investigators will investigate electrical and connectivity changes in the brain associated with RS-tDCS+ using electroencephalogram (EEG) and magnetic resonance imaging (MRI). Third, the investigators will investigate the lasting effects of any observed changes by evaluating participants at 1 and 6 weeks post-treatment. Lastly, the investigators will explore the impact of individual differences (e.g., PTSD, depression, sleep quality, time since injury, baseline impairment, age, sex, ADSM versus Veteran) on treatment outcome.

NEUROBALANCE Training to Improve Postural Control in Individuals With Traumatic Brain Injury

Our proposed study, \"NEUROBALANCE,\" aims to evaluate the effectiveness of a combined intervention involving robotic balance training and noninvasive brain stimulation in improving balance functions in individuals with chronic traumatic brain injury (TBI). The study will recruit 45 participants who have had a TBI for over six months and experience persistent balance deficits. Participants will be randomized into three groups: (1) robotic balance training with active brain stimulation, (2) robotic balance training with sham brain stimulation, and (3) standard-of-care rehabilitation. The study will involve 12 training sessions over four weeks, with assessments conducted at baseline, post-training, and two months post-training to evaluate balance recovery and retention. The primary focus is understanding how this intervention affects brain and muscle activity during balance tasks and how these changes translate into functional improvements in clinical outcome measures of balance function. Additionally, participant feedback on brain stimulation and exercise engagement will be collected to inform future studies. This research is particularly relevant to military service members, as TBI and balance impairments are common among this population. The findings may guide the development of personalized training protocols and contribute to broader rehabilitation strategies.

Mobile Subthreshold Exercise Program for Concussion--R01

Approximately 1.9 million youth sustain a concussion each year, and up to 30% experience persistent post-concussive symptoms (PPCS) such as headache, dizziness, and difficulty focusing that continue for weeks or months. PPCS results in greater utilization of sub-specialty care and can impact immediate and long-term social development, cognitive function and academic success. Previous recommendations for treating PPCS have focused on cognitive and physical rest, but more recently guidelines have shifted based on new research suggesting the benefit of rehabilitative exercise for PPCS. The rationale behind using exercise to treat youth with concussion is that gradually increasing physical activity facilitates return to full function. Rehabilitative exercise has since become one of the most common approaches to treating youth with PPCS, but access is challenging since most programs require weekly centralized visits with a concussion specialist. To bridge this gap, the investigators developed a telehealth-delivered approach to treat PPCS, utilizing physical activity trackers (Fitbits) and weekly video conferences with trained research staff. They then conducted a series of pilot studies with this approach, finding excellent feasibility, acceptability, and evidence for more rapid declines in concussive symptoms compared to controls. The investigators also found preliminary evidence that mechanisms behind this intervention may stem from both physiologic processes due to increased moderate-to-vigorous physical activity (MVPA) and psychologic processes such as reducing fear- avoidance of concussive symptoms. They now propose a fully-powered randomized controlled trial (RCT) to asses the efficacy of the "Mobile Subthreshold Exercise Program" (M-STEP) for treating youth with PPCS.