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Funding
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This research is a 5-year observational, longitudinal registry study with no treatment or medication provided as part of participation. Individuals with current or lifetime stimulant use disorder, in addition to healthy control individuals, may be eligible to participate in this study. A variety of assessments and tasks including Magnetic Resonance Imaging (MRI), Electroencephalography (EEG), blood draws, urine drug screens, and both self-report and clinician-rated assessments will be used to assess biomarkers in this population. This study has a visit schedule of four in-person visits and eight remote visits per year.
This project is a five-year observational study that will use a variety of assessments and tasks to phenotype participants with lifetime or current Stimulant Use Disorder as well as healthy control individuals. The data collection will include collecting urine samples for diagnostic tracking, socio-demographic and lifestyle factors, clinical and behavioral assessments, blood-based biomarkers, genomics, cell-based assays, EEG, and MRI to establish phenotypic biosignature subtypes over the longitudinal timeline.
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| Measure | Description | Time Frame |
|---|---|---|
| Stimulant Use | The primary outcome measure is maintaining a naturalistic database of stimulant use disorders using urine drug screens and self-reported use through the Timeline follow-back questionnaires. | 5 years |
| Measure | Description | Time Frame |
|---|---|---|
| Demographic Differences in Stimulant Use | Based on racial, ethnic, and socioeconomic status, compare the demographic disparity of the stimulant use disorder compared to healthy controls. | 5 years |
| Longitudinal changes from baseline in self-reported stress assessed by Perceived Stress Scale |
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Inclusion Criteria:
Exclusion Criteria:
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Approximately 1,000 adults who meet eligibility criteria for Stimulant Use Disorder, as confirmed by the MINI and supplement. Additionally, 500 healthy control individuals will be enrolled. Current stimulant use disorder will be supported by a urine sample positive for stimulants (such as amphetamines, methamphetamine, cocaine, 3,4-Methylenedioxymethamphetamine, or prescription stimulants).
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| Name | Affiliation | Role |
|---|---|---|
| Madhukar Trivedi, M.D. | Professor | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| UT Southwestern Medical Center | Dallas | Texas | 75247 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 32555667 | Background | Ronsley C, Nolan S, Knight R, Hayashi K, Klimas J, Walley A, Wood E, Fairbairn N. Treatment of stimulant use disorder: A systematic review of reviews. PLoS One. 2020 Jun 18;15(6):e0234809. doi: 10.1371/journal.pone.0234809. eCollection 2020. | |
| 33894219 | Background | Cao KX, Ma ML, Wang CZ, Iqbal J, Si JJ, Xue YX, Yang JL. TMS-EEG: An emerging tool to study the neurophysiologic biomarkers of psychiatric disorders. Neuropharmacology. 2021 Oct 1;197:108574. doi: 10.1016/j.neuropharm.2021.108574. Epub 2021 Apr 22. |
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Biospecimen collection occurs 4x/year and includes Urine Screening for Disease, Blood Sample for Laboratory Testing (CMP, CBC, hs-CRP, and disease serology), and Blood Sample for Storage.
Venous blood samples for measurement of biomarkers will be collected from all participants. The whole blood collection tubes include anticoagulant tubes containing EDTA, ACD, lithium heparin, or sodium citrate, coagulant tubes, and specialty research tubes such as PAXGene tubes containing enzyme inhibition solutions. Serum, plasma, and cellular fractions will be isolated from whole blood. Urine and saliva samples are also collected for research purposes. Genetic information (including DNA and RNA) will be obtained from whole blood or isolated cells.
Participants' perceived level of stress will be assessed with the Perceived Stress Scale (PSS), a 10-item self-administered scale that is used to measure an individual's level of perceived stress in the past month. The PSS score is obtained by summing across items (responses to the four positively stated items first need to be reversed). Individual scores on the PSS can range from 0 to 40 where higher scores indicate higher levels of perceived stress. |
| 5 years |
| Longitudinal changes from baseline in symptom tracking assessed by the Concise Associated Symptom Tracking Scale (CAST-IRR) | Participants' associated mood symptoms will be assessed using a 10-item version of the Concise Associated Symptom Tracking Scale Self-Report (CAST-IRR), a self-report scale that assesses irritability. Each individual item is rated on a 5-point Likert scale with responses of "strongly disagree," "disagree," "neither agree nor disagree," "agree," and "strongly agree" corresponding to scores of 1, 2, 3, 4, and 5, respectively, and a total score of 5-50. An increased score indicates higher irritability levels. | 5 years |
| Longitudinal changes from baseline in quality of life assessed by the Quality-of-Life Enjoyment and Satisfaction Questionnaire Short Form (Q-LES-Q-SF) | The Quality-of-Life Enjoyment and Satisfaction Questionnaire Short Form (Q-LES-Q-SF) is a 16-item self-administered questionnaire that captures degree of enjoyment and satisfaction experienced by an individual over the past week. Each question is rated on a 5-point scale from 1 (Very Poor) to 5 (Very Good). Scores from the individual items are added together and reported as a percentage maximum possible score. | 5 years |
| Longitudinal changes from baseline in productivity assessed by Work Productivity and Activity Impairment-Specific Health Problem Questionnaire (WPAI-SHP) | The Work Productivity and Activity Impairment-Specific Health Problem Questionnaire (WPAI-SHP) Version 2.0 will be used to assess work impairment due to substance use disorder. Six items comprise the measure, with the first item asking about whether participants are currently employed/working for pay. If so, participants complete five additional items, which include how many hours from work are missed due to substance use disorder (SUD), productivity while working and ability to do regular daily activities besides work. The latter two items are scored on a scale of 0 (SUD had no effect on work) to 10 (SUD completely prevented me from working). | 5 years |
| Longitudinal changes from baseline in symptoms of mania assessed by the Altman Self-Rating Mania scale (ASRM). | The Altman Self-Rating Mania Scale (ASRM) is a 5-item self-administered scale designed to assess the presence and/or severity of manic symptoms. Each item on the measure is rated on a 5-point scale (i.e., 1 to 5) with response categories having different anchors depending on the item. The ASRM score ranges from 5-25 with higher scores indicating greater severity of manic symptoms. A cutoff score of 6 or higher indicates a high probability of a manic or hypomanic condition. A score of 5 or lower is less likely to be associated with significant symptoms of mania. | 5 years |
| Longitudinal changes from baseline sleep quality assessed by the Pittsburgh Sleep Quality Index (PSQI) | The Pittsburgh Sleep Quality Index (PSQI) is a 19-item self-report questionnaire which assesses sleep quality and disturbances over a 1-month time interval. The 19-items are grouped into seven "component" scores: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction. Each of these seven subcategories is weighted equally on a 0-3 scale, which are then combined to yield a global PSQI score with a range of 0-21. A higher PSQI score indicates more acute sleep disturbances. | 5 years |
| Longitudinal changes from baseline on proteomic, metabolomic, transcriptomic, and epigenomic factors assessed using fluid-based biomarkers | Comparison of Longitudinal changes in fluid-based biomarkers as measured by proteomic methods, metabolomics methods, transcriptomic methods, genomic methods, and epigenomic methods in patients with Stimulant Use Disorder versus Healthy Controls. | 5 years |
| Longitudinal changes from baseline Electroencephalogram (EEG) metrics | The EEG includes pre-treatment alpha and theta EEG power and source localization measures of theta activity in the rostral Anterior Cingulate Cortex, the Loudness Dependency of Auditory Evoked Potentials, and assessment of psychomotor slowing (measured during reaction time, word fluency, implicit emotion processing or regulation, and reward learning tasks), cognitive control (as measured by interference and post-error adjustments), working memory, and reward-conditioned learning. The EEG metrics will be measured in terms of Alpha (8-13 Hz), beta (13-30 Hz), delta (0.5-4 Hz), and theta (4-7 Hz) waves and compared with baseline every 3 months for 5 years. | Baseline and every three months for five years |
| Longitudinal changes from baseline Magnetic Resonance Imaging (MRI) metrics | The Structural MRI measures cortical thickness. Structural MRI volume differences of the brain region will be measured and compared to the baseline every 6 months. The Functional MRI measures resting state intracerebral connectivity. Changes in functional connectivity will be assessed from baseline to every 6 months for 5-years during enrollment period. Pulsed Arterial Spin Labeling (PASL), a measure of regional cerebral blood flow, will be assessed through changes in the cerebral metabolic oxygen rate measure from baseline to every 6 months for 5-years during enrollment period. Diffusion Tensor Imaging (DTI) will assess changes in the white matter connectivity measure from baseline to every 6 months for 5 years during enrollment period. Magnetic Resonance Spectroscopy (MRS) will assess changes in the neurochemistry of glutamate and GABA from baseline to every 6 months for 5 years during enrollment period. | Baseline and every six months for five years |
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