Identifying Biomarkers That Distinguish PTSD and mTBI Using Advanced Magnetic Resonance Spectroscopy

Brain Injuries Clinical Trial

Official title: Identifying Biomarkers That Distinguish Post-Traumatic Stress Disorder and Mild Traumatic Brain Injury Using Advanced Magnetic Resonance Spectroscopy

Status Completed

Clinical Trial Summary

The purpose of this study is to develop a new test to help diagnose mild traumatic brain injury (mTBI) and post-traumatic stress disorder (PTSD) in soldiers. Chemicals in the brain will be measured using a Magnetic Resonance Spectroscopy (MRS) scan. In the study, the investigators will compare the information they obtain from scans of participants with mTBI, PTSD or both, to scans from healthy volunteers to understand the differences between these groups. If the results can tell the difference between participants with mTBI and PTSD, the investigators should be able to help safely diagnose patients in the future.

Clinical Trial Description

Soldiers from the US Army, with well characterized diagnosis of mTBI or PTSD, will be recruited in the first year as will age-matched healthy controls from the military and civilian populations. MRI, single voxel MRS, and two-dimensional correlated spectroscopy (2D COSY) MRS will be acquired from each participant at the Brigham and Women's Hospital (BWH). This data will be anonymized and transferred to the Draper Laboratories. Biomarkers for each disease will be identified by comparison with control data. These biomarkers will then be fed into classifiers that will then be validated with a similar cohort acquired in the second year. The second cohort of subjects will then be incorporated into the classifier algorithms for a stronger and more robust classification from which a diagnostic test will emerge. To test this diagnostic evaluation the data analysis by both BWH and Draper labs will be blinded to the characterization of the participants and from the MRS results, the investigators will predict if the participant has mTBI, PTSD, both, or neither. Finally, all data will then be fused into the algorithms to provide a final classifier. The results of the final classifier will then be correlated with clinical, neuropsychological, and neuroanatomical indices of mTBI and PTSD. These correlations will provide the most complete biochemical analysis of mTBI and PTSD which may lead to insight into alternate pathways for drug development. ;

Related Conditions & MeSH terms

• Brain Injuries
• Post-Traumatic Stress Disorders
• Stress Disorders, Post-Traumatic
• Stress Disorders, Traumatic

• NCT number: NCT02927288
• Study type: Observational
• Source: Brigham and Women's Hospital
• Status: Completed
• Phase: N/A
• Start date: January 2012
• Completion date: September 2017