- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03398070
Neuroimaging Biomarkers of Prognosis in Motor Functional Neurological Disorders
Study Overview
Detailed Description
Functional Neurological Disorder (FND) (Conversion Disorder) is a poorly understood and prevalent somatoform disorder, making up 16% of outpatient neurology referrals. Patients with motor FND (mFND) are difficult to treat, result in major morbidity, and are costly to the US. An estimated $256 billion is spent annually treating this population. mFND includes Nonepileptic Seizures (NES), Functional Movement Disorders (FMD) and Functional Weakness (FW). An impediment to managing mFND is the lack of a neurobiological understanding for this disorder. The diagnosis of mFND is currently based on qualitative aspects of behaviors, which may be difficult to interpret, and the absence of findings characteristic of other neuropsychiatric disorders on laboratory studies such as electroencephalography (EEG) and magnetic resonance imaging (MRI).
A major step forward would be the identification of neuroimaging biomarkers for mFND. mFND is understudied compared to other disorders, but recent studies point to distributed neurocircuit alterations associated with mFND. This project aims to advance our biological understanding of mFND by investigating neuroimaging biomarkers linked to prognosis. An improved understanding of the pathophysiology of mFND will provide a critical step in elucidating diagnostic, prognostic and treatment response biomarkers.
Aim:
Identify structural and functional biomarkers of prognosis at 6-months in patients with motor functional neurological disorders receiving an updated standard of care.
H1: Favorable mFND prognosis at 6 months post initial evaluation will be predicted by the degree of preserved baseline gray matter in limbic-paralimbic regions, particularly those part of the salience network.
H2: Favorable mFND prognosis at 6 months post initial evaluation will be predicted by the degree of preserved baseline resting-state functional connectivity in limbic/paralimbic areas, particularly those part of the salience network.
H3: Favorable mFND prognosis at 6 months will correlate with the degree of preserved baseline cingulum bundle and cingulum-insular tract integrity.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Contact
- Name: David L Perez, MD, MMSc
- Phone Number: 617-724-7243
- Email: dlperez@partners.org
Study Locations
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Massachusetts
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Boston, Massachusetts, United States, 02114
- Massachusetts General Hospital
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Sampling Method
Study Population
Description
Inclusion Criteria:
- clinically established motor functional neurological disorder, including individuals with functional movement disorders, functional limb weakness and psychogenic nonepileptic seizures
Exclusion Criteria:
- active suicidality
- major medical/neurological comorbidities with known central nervous system (CNS) consequences
- active drug use or alcohol dependence
- known history of a primary psychotic disorder
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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Motor Functional Neurological Disorder.
The cohort will consist of patients with clinically established motor functional neurological disorder, which includes individuals with functional movement disorders, psychogenic nonepileptic seizures and functional limb weakness. Patients will be receiving the standard of care within the Massachusetts General Hospital (MGH) Functional Neurological Disorders Clinic. The updated standard of care that patient's receive in the MGH Functional Neurological Disorders Clinic includes the following:
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The standard of care interventions for Functional Neurological Disorders (FND) include:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Gray Matter Volume Biomarkers of 6 Month Prognosis as Measured by Voxel Based Morphometry - Within Group Comparison
Time Frame: baseline and 6 months
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Correcting for multiple comparisons in structural analyses, baseline structural grey matter volumes in limbic/paralimbic regions (particularly those affiliated with the salience network), would relate to clinical outcome in individuals receiving the standard of care at 6 months. Analyses reported refer to change in either mental health or physical health scores and baseline gray matter volume. The number presented is the peak voxel z-score as also reported in Supplementary Table 4 of the published manuscript. Z-scores are presented in absolute values (with the lowest value being 0). A higher z-score represents a stronger correlation between a given gray matter volume value (at the peak voxel) and the measure of interest (in case mental health or physical health scores). The entry under "row title" specifies if the association is a "positive" vs a "negative" association. |
baseline and 6 months
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Resting State Functional Connectivity Strength Biomarkers of 6 Month Prognosis - Within Group Comparison
Time Frame: baseline and 6 months
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Correcting for multiple comparisons in resting state connectivity analyses, baseline functional connectivity strength (t-statistic scores) across limbic/paralimbic regions (particularly those affiliated with the salience network), would relate to clinical outcome in individuals receiving the standard of care at 6 months. Here, we tested if link-step connectivity from primary motor areas or amygdala nuclei related to change in clinical outcome. Specifically, we are providing the t-statistic for the connectivity strength between left centromedial amygdala to right anterior insula. Functional connectivity strength is based on the correlation of low frequency brain oscillations measured at rest. A large t-statistic value reflects greater connectivity between brain voxels. |
baseline and 6 months
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The Integrity of Specific White Matter Tracts (Fractional Anisotropy) as Measured by Diffusion Tensor Imaging (DTI) Tractography Will Relate to 6-month Prognosis
Time Frame: baseline and 6 months
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Baseline integrity of the cingulum bundle and cingulate-insular tracts, as measured by fractional anisotropy, would relate to 6 month prognosis in patients with Functional Neurological Disorders (FND) receiving the standard of care. Outcome was not assessed - no time to analyze data given prior challenges with the pandemic. Unable to report data in any table as the white matter images have not been analyzed. |
baseline and 6 months
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Collaborators and Investigators
Sponsor
Publications and helpful links
General Publications
- Diez I, Ortiz-Teran L, Williams B, Jalilianhasanpour R, Ospina JP, Dickerson BC, Keshavan MS, LaFrance WC Jr, Sepulcre J, Perez DL. Corticolimbic fast-tracking: enhanced multimodal integration in functional neurological disorder. J Neurol Neurosurg Psychiatry. 2019 Aug;90(8):929-938. doi: 10.1136/jnnp-2018-319657. Epub 2019 Mar 8.
- Perez DL, Williams B, Matin N, Mello J, Dickerson BC, LaFrance WC Jr, Keshavan MS. Anterior hippocampal grey matter predicts mental health outcome in functional neurological disorders: an exploratory pilot study. J Neurol Neurosurg Psychiatry. 2018 Nov;89(11):1221-1224. doi: 10.1136/jnnp-2017-317305. Epub 2018 Jan 11. No abstract available.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 1K23MH111983-01A1 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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