Clinical Research Directory

Repetitive Transcranial Magnetic Stimulation Treatment of Stimulant Use Disorder

The purpose of this study is to establish a new treatment (repetitive transcranial stimulation (rTMS)) for Veterans with stimulant use disorder (SUD). Despite the large public health burden imposed by SUD, there is currently no FDA-approved or widely recognized effective somatic treatment. This placebo controlled study will test the effectiveness of rTMS in the treatment of SUD, and explore biomarkers that may guide patient selection for rTMS treatment and predict treatment response.

LDART for Stimulant Use Disorder

The goal of this study is to evaluate the feasibility, acceptability, and preliminary efficacy of a digital intervention called LDART in adults with stimulant use disorder.

Developing and Testing Innovative Care Pathways for Screening and Treatment of OUD/PTSD in Jails

Opioid overdose is the leading cause of death among people recently released from incarceration. Recent evidence also shows a rise in stimulant use among justice-involved populations, as well as growing rates of concurrent opioid and stimulant use. Yet, while there is growing research on opioid use disorder (OUD), stimulant use disorder (STUD), and substance use treatment in jails and prisons, studies find that few people who are referred to community substance use treatment actually initiate treatment after release. But, emerging research suggests that therapy for posttraumatic stress disorder (PTSD), a common and deleterious OUD and STUD comorbidity, could profoundly increase the likelihood of engagement with substance use treatment; however, this has not been tested in jails, and acceptable, appropriate, and feasible ways to identify and link people with probable PTSD and OUD/STUD in this setting to treatment are required to be able to examine this possibility. Therefore, this 4-year R33 aims to 1) describe engagement in and examine the implementation outcomes of an innovative approach to identifying and referring people with probable PTSD and OUD/STUD to needed treatment services and 2) the effectiveness and implementation outcomes of two competing models of subsequent trauma-focused therapy initiation timing (i.e., immediate initiation of therapy vs initiation upon community reentry) among people who demonstrate need for OUD/STUD services and who accept referral. To address Aim 1, the investigators will assess the implementation context for and subsequently implement a screening, brief intervention, and referral to treatment model that was adapted to identify and address the substance use and mental health needs of adults with probable PTSD and OUD/STUD in the jail setting (SBIRT-J) in the Pulaski County Regional Detention Facility; the investigators will describe engagement in and examine the implementation outcomes of the SBIRT-J model via a summative evaluation guided by the Consolidated Framework for Implementation Research. Specifically, there will be a survey and interview jail stakeholders (e.g., jail leadership, officers) to understand perceptions of the acceptability, appropriateness, and feasibility of the SBIRT-J model as well as SBIRT-J implementation determinants (i.e., barriers and facilitators), and use administrative data to understand the degree to which SBIRT-J is adopted during active enrollment in the R33 Aim 2 research trial and sustained in the 6 months after enrollment end. Fidelity to the SBIRT-J model will also be monitored and reported. To address Aim 2, the investigators will conduct a patient-randomized Hybrid type I implementation-effectiveness trial in which adults who are identified as having probable PTSD and OUD/STUD through the SBIRT-J model and who consent to participate in the trial are randomly assigned to either immediate initiation of therapy for PTSD in jail or initiation of PTSD therapy upon release. The primary effectiveness outcome will be post-release substance use treatment initiation by 6-months post-release from jail; secondary and exploratory outcomes will include substance use treatment readiness and retention, OUD/STUD severity, PTSD symptoms, victimization, overdose, and additional drug use. Participants in the effectiveness portion of the trial (N = 338; \~50% female) will be enrolled from the largest jail in Arkansas. Jail stakeholders will also be enrolled to provide implementation-related data. The overall goal is to translate research to practice to increase the provision of high-quality care for justice-involved persons with probable PTSD and OUD/STUD. Indeed, this study will be the first trial of a treatment for PTSD in jails as a method for improving OUD/STUD outcomes, providing foundational information on PTSD as a novel intervention target for meeting the needs of a particularly vulnerable population and providing the implementation data to inform rapid scale-up, if effective.

RESTORE Study R61 Phase: Recovery and Engagement for Stimulant Users on Re-entry

Justice-involved individuals face disproportionately high rates of stimulant use disorder and HIV, along with disrupted access to HIV treatment and prevention services like ART and PrEP. Contingency management (CM) is the most effective intervention for stimulant use, but its use in justice-involved populations has been limited by logistical and structural barriers. DynamiCare is an FDA-approved mobile app that delivers behavioral CM and has shown promise in reducing stimulant use, but its impact on HIV-related outcomes remains unknown. The RESTORE study (Recovery and Engagement for Stimulant Users on Re-entry) will evaluate whether combining DynamiCare with patient navigation (DynamiCare-plus) improves PrEP/ART initiation and reduces stimulant use among individuals recently released from justice settings. The R61 phase will assess feasibility, acceptability, and preliminary effectiveness among 40 participants. If milestones are met, the R33 phase will scale to a randomized controlled trial with 252 participants to assess effectiveness, implementation, and cost. This scalable, mobile approach has the potential to address a critical gap in care for a highly vulnerable population.

Optimizing Transcranial Magnetic Stimulation for Stimulant Use Disorder

The study will recruit 50 adults with stimulant use disorder currently in treatment and abstinent for at least 2 weeks. The study will also recruit up to 10 healthy controls (adults without StUD) for initial study configuration. The study will consist of five steps that are expected to be completed over two lab visits. Step 1: The 3T MRI scan will provide accurate prefrontal cortex anatomy for using neuronavigation for TMS. In addition, the study will use an analysis of resting fMRI connectivity to determine the location in the left DLPFC that has the maximum connectivity with the incentive-salience network. Step 2: The study will use the data collected at the MRI to select the individual TMS location. EEG will be used to collect TEPs in response to single pulse TMS at the left DLPFC. Participants will then be randomized to one of three conditions: A) TMS unsynchronized with EEG, B) TMS synchronized with EEG theta frequency trough, and C) TMS synchronized with EEG theta frequency peak. The stimulation will be applied with an intensity of up to 120% of the resting motor threshold (which is a safe and common practice; Rossi et al., 2021). The intensity can be decreased for individual participants. Step 3: Following randomization, the study will administer a pre-iTBS assessment. Step 4: The study will compare brain and behavioral responses before and after the iTBS session with TMS and EEG synchronization as assigned by their randomized group. Step 5: The study will administer a post-iTBS assessment.

Emotional Brain Training for Addiction Medicine Treatment - A Pilot Study

The goal of this clinical trial is to determine whether Emotional Brain Training (EBT), a behavioral modification method, can help manage stress and health problems related to addiction. EBT teaches skills to deactivate harmful circuits (automatic reactions) and activate healing circuits to quickly shift mood from negative to positive. Participants in the EBT group will receive focused, intensive instruction on using these skills to rewire unwanted brain circuits, with the aim of achieving lasting improvements in emotional health and quality of life. The study will assess whether EBT is an effective tool when added to standard of care (SOC), which includes medications for addiction treatment (MAT). Researchers will compare changes in stress, anxiety, and cravings after 8 weeks of EBT plus SOC versus SOC alone. Participants: * will either continue receiving standard treatments (SOC) at the Addiction Recovery Clinic (ARC) at SAC Health in San Bernardino * or receive both EBT and SOC at ARC * in the SOC group will continue monthly visits at ARC and weekly counseling * in the EBT plus SOC group will continue monthly visits and weekly counseling at ARC, along with weekly EBT group sessions by telephone * will complete online assessments at weeks 0, 4, and 8 Upon completion of the study, all participants will resume SOC

Behavioral Effects of Drugs (Inpatient): 43 (Opioids, Cocaine, n-Acetylcysteine)

The overarching hypotheses of this protocol are that (1) persistent brain glutamate changes induced by chronic opioid use will exacerbate use of cocaine during opioid physical dependence and withdrawal and (2) n-acetylcysteine (NAC) will ameliorate glutamatergic dysregulation, and thus will reduce both opioid and cocaine demand. These hypotheses will be tested with two specific aims. Specific Aim 1. Determine the reinforcing effects of cocaine in individuals with comorbid opioid and cocaine use disorder with physiological dependence on opioids during NAC maintenance. All subjects will be maintained on oral hydromorphone. They will also be randomly assigned to receive placebo or oral NAC (2.4 g/day), stratified by sex. After dose stabilization, experimental sessions will be conducted in which subjects complete hypothetical cocaine purchase tasks during opioid maintenance and opioid withdrawal. The hypotheses are: 1) cocaine purchasing will be greater during opioid withdrawal and 2) NAC maintenance will attenuate cocaine purchasing across opioid maintenance and withdrawal periods. Specific Aim 2. Evaluate glutamate functionality during periods of opioid maintenance and withdrawal in individuals with comorbid opioid and cocaine use disorder and physiological dependence on opioids during NAC maintenance. Subjects will undergo magnetic resonance spectroscopy to evaluate brain glutamate changes as a function of opioid maintenance/withdrawal state and NAC maintenance. The hypotheses are: 1) glutamate levels will be elevated during opioid withdrawal and 2) NAC maintenance will ameliorate elevated glutamate levels.

Continuum of Care in Hospitalized Patients With Opioid/Stimulant Use Disorder and Infectious Complications From Drug Use

This is a two-group randomized controlled trial conducted at five hospitals across the U.S. designed to test the effectiveness of an Integrated infectious diseases/Substance Use Disorder outpatient clinic (IC) compared to treatment as usual aimed at reducing infection related readmissions and improving health outcomes in people hospitalized with an infection related to injecting opioids or stimulants.

Contingency Management for Opioid and Stimulant Use Disorders in Primary Care

Contingency management (CM) is a behavioral intervention that involves incentivizing participants for target behaviors in a clinical setting. When applied to the treatment of substance use disorders, it has demonstrated efficacy in reducing the number of urine toxicology screens positive for illicit substances and increased engagement in treatment programs. However, there is a need to translate CM treatment to primary care settings. This study will implement and assess a CM program for patients with opioid use disorder, with or without comorbid stimulant use disorder, initiating outpatient addiction medicine services at a family medicine residency clinic. Eligible patients will earn monetary incentives for attending addiction medicine appointments and abstaining from substances during outpatient treatment. Data gathered from this pilot program will be used to improve patient outcomes, treatment, and retention for persons receiving medications for opioid use disorder (MOUDs) in a primary care setting.

Orexin Receptor Antagonism and Sleep in Stimulant Use Disorder

The purpose of this study is to determine the effects of suvorexant (SUVO), on sleep, stress, and drug craving during early abstinence from stimulants and to determine the effects of treatment (SUVO vs. treatment as usual (TAU)) on post-treatment (Days 13-30) residential program length of stay (LOS) and completion rate.

reSET for the Treatment of Stimulant Use in HIV Clinics: Care Optimization Supporting Treatment Adherence (COSTA)

The purpose of this study is to find out if reSET, an FDA authorized mobile therapeutic, is effective in treating stimulant use disorder and helping keep HIV viral load suppression stable among men who have sex with men who are living with HIV and have a stimulant use disorder.

Smartphone Services for Stimulant Use Disorder

This study is testing two approaches to treating Stimulant Use Disorder, or problems with cocaine, crack, methamphetamine, etc. Stimulant Use Disorder is a national epidemic in the U.S. but there is no FDA-approved medication to treat it. There is a behavioral approach that has been found to be the most effective treatment for Stimulant Use Disorder, but this study is testing whether this can be delivered by a smartphone service, remotely, such as at home.

Mirtazapine for the Treatment of Methamphetamine Use in Opioid Use Disorder Patients Receiving Medication Assisted Treatment

This project will evaluate the ability of Mirtazapine (MZP), a pharmacologically unique medication with a growing body of evidence to support its efficacy and safety for the treatment of methamphetamine (MA) use among medication for opioid use disorder (MOUD) patients, to significantly decrease MA use and related health-impairing behaviors. MZP has already successfully been used in the treatment of methamphetamine (detailed further below and in the Appendices). The investigators hypothesize that those assigned to the MZP plus treatment as usual (TAU) MZP+TAU arm will demonstrate significantly increased rates of biochemically verified abstinence from MA and other substances of abuse and experience improvements in health impairing behaviors relative to the placebo (PLO)+TAU arm across the 10-week treatment and follow-up periods.

PEX010-Assisted Therapy for Stimulant Use Disorder: A Safety, Feasibility and Efficacy Study

The goal of this clinical trial is to learn if PEX010 is effective for the treatment of Stimulant Use Disorder in adults. The study will also assess the safety and feasibility of administering PEX010 to this population. The main questions it aims to answer are: Does PEX010 reduce stimulant use? What medical problems do participants experience when taking PEX010? Researchers will compare an active PEX010 dose containing 25 mg psilocybin to an active placebo arm, to see if PEX010 works to reduce stimulant use. Participants will: Take PEX010 or the active placebo once during the study, engage in cognitive behavioural therapy, and visit the clinic twice weekly for study intervention and follow-up assessments.