- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04360681
Lofexidine Combined With Buprenorphine for Reducing Symptoms of PTSD and OU Relapse in Veterans
Lofexidine Combined With Buprenorphine for Reducing Symptoms of Post-Traumatic Stress Disorder (PTSD) and Opioid Use Relapse in Veterans
Study Overview
Status
Intervention / Treatment
Detailed Description
The aim of this clinical trial is to evaluate the efficacy of Lucemyra™ (lofexidine; LFX), an alpha-2-adrenergic receptor (α2-AR) agonist, as a medication for the prevention of opiate relapse and the alleviation of post-traumatic stress disorder (PTSD) symptoms in opiate-dependent veterans.
Primary Endpoints :
For OUD:
Drug-Taking Behavior (% abstinent from illicit opioid use from Week 5 to Week 12 of the active treatment phase) is the primary efficacy endpoint for monitoring the effects of treatment on OUD, which is measured by both urine drug screen (UDS; opioids are detectable for 1-4 days) and timeline follow-back (TLFB) interviews of drug/alcohol use.
For PTSD:
The primary efficacy endpoint for monitoring the effects of treatment on PTSD symptoms is mean change scores on the PTSD Checklist for Diagnostic and Statistical Manual of Mental Disorders (DSM-5) (PCL-5), which is recommended by the Department of Veterans Affairs and the Department of Defense (VA/DoD) Clinical Practice Guideline as a quantitative measure of a patient's PTSD symptoms and response to treatment over time.
Secondary Endpoints:
For OUD:
Drug-Taking Behavior (≥ 80% abstinent between Week 5 to Week 12), treatment duration (days in treatment), and scores on the Subjective Opiate Withdrawal Scale (SOWS), the Clinical Opiate Withdrawal Scale (COWS), and the Opioid Craving Visual Analog Scale (OC-VAS) are secondary efficacy endpoints for monitoring the effects of treatment on symptoms on OUD.
For PTSD:
The secondary efficacy endpoints for monitoring the effects of treatment on core symptoms of PTSD are CAPS-5 change score (between screening and Week 12).
Population:
120 veteran participants will be recruited from within the MEDVAMC. The study population will consist of veterans diagnosed with OUD and potential or provisional PTSD who are seeking treatment.
Phase:
This is a Phase 2 randomized, double-blind, placebo-controlled, single-site, parallel groups, 12-week treatment study
Duration:
Enrollment period of 24 months. Participant duration is 18 weeks (consisting of 4 weeks screening, a 12-week treatment period, and a 2-week follow-up).
Study Type
Enrollment (Estimated)
Phase
- Phase 2
Contacts and Locations
Study Contact
- Name: Adetola Vaughan
- Phone Number: 713-794-8912
- Email: adetola.vaughan@va.gov
Study Contact Backup
- Name: Christopher D Verrico, PhD
- Phone Number: 26020 713-791-1414
- Email: verrico@bcm.edu
Study Locations
-
-
Texas
-
Houston, Texas, United States, 77030
- Recruiting
- Michael E. DeBakey Veterans Affairs Medical Center
-
Contact:
- Christopher D. Verrico, PhD
- Phone Number: 26020 713-791-1414
- Email: verrico@bcm.edu
-
Contact:
- Thomas R. Kosten, MD
- Phone Number: 713-794-7032
- Email: kosten@bcm.edu
-
Principal Investigator:
- Christopher D. Verrico, PhD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Male or female, 18 to 65 years of age, capable of reading and understanding English, and able to provide written informed consent (i.e. no persons who are imprisoned, of minor age, diagnosed with dementia, diagnosed with a terminal illness, or who otherwise require a surrogate to provide informed consent).
- Be on a stable dose of BUP maintenance therapy for at least 7 days at the same maintenance dose. Veterans or non-Veterans who are not currently on a stable dose of BUP maintenance therapy will be referred to the Substance Dependence Treatment Program at the MEDVAMC or the Addiction Clinic at BTGH and invited to screen for this study once BUP treatment is stable.
- Have a positive urine toxicology screen for BUP.
- Has a previous diagnosis of PTSD documented in CPRS or meets criteria for current PTSD as assessed by the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5).
- Have hematology and chemistry laboratory tests within 3 months of study entry that are within normal (± 15%) limits, except liver function test results, which can be 5X the upper limit of normal.
- Have a medical history and physical examination demonstrating no clinically significant contraindications for study participation within 3 months of study entry.
Exclusion Criteria:
DSM-5 criteria for substance use disorders (SUDs) other than OUD, nicotine, or cannabis, or stimulants [assessed by UDS and the Mini-International Neuropsychiatric Interview (MINI)].
*Note that because the MINI assesses for SUDs over the past 12 months, potential participants will only be excluded if they both meet DSM-5 criteria for a SUD and have a positive UDS for that substance on study day 1. If a participant both meets DSM-5 criteria for a SUD and has a positive UDS at the screening visit, they will be informed that to be enrolled in the study they must have a negative UDS at their first study visit (i.e., prior to being enrolled).
- Self-reported use of methadone in the last 14 days.
- Be undergoing significant opioid withdrawal, as assessed by the COWS (defined as >12 on the COWS).
- Increased risk of suicide that necessitates inpatient treatment or warrants therapy excluded by the protocol, and/or current suicidal plan, per investigator clinical judgement, based on interview and defined on the Columbia Suicidality Severity Rating Scale (C-SSRS).
- Females of child-bearing potential must be using medically acceptable birth control (e.g. oral, implantable, injectable, or transdermal contraceptives; intrauterine device; double-barrier method) AND not be pregnant OR have plans for pregnancy or breastfeeding during the study.
Use of any of the following medications within 30 days prior to enrollment (self-report on Prior/Concomitant Medications (Meds) form):
- Benzodiazepines, barbiturates, or other CNS depressants
- Methadone or any other prescription analgesics, except BUP or BUP/naloxone
- Opioid antagonists such as naltrexone, except naloxone in combination with BUP
- Tricyclic antidepressants, which may reduce the efficacy of imidazoline derivatives
- Drugs that have been associated with QT prolongation, including:
i. Antiarrhythmics: amiodarone, ajmaline, quinidine, disopyramide, procainamide, sotalol, ibutilide, dofetilide, etc.
ii. Antimicrobials
- Fluoroquinolones: ciprofloxacin, levofloxacin, gatifloxacin, moxifloxacin, etc.
- Macrolides: erythromycin, roxithromycin, azithromycin, clarithromycin, etc.
Antifungals: ketoconazole, itraconazole, etc. iii. Antipsychotics: haloperidol, thioridazine, ziprasidone, clozapine, quetiapine*, risperidone*, olanzapine, etc.
f. Any other medications that might seriously and adversely interact with either LFX or BUP or have contraindication(s) to these medications
- The following medications will be permissible at the discretion of the study physician:
- Bupropion a. Allowable dosage of up to 150mg daily (this is well below the therapeutic dose for depression, but is given for smoking cessation)
Quetiapine
a. Allowable dosage 25mg -150 mg daily (typically given at night for sleep and well below the antipsychotic dosage of 400 mg or more)
Risperidone
- Allowable dosage 0.25mg- 1mg daily (below the antipsychotic dose of 2-8 mg daily) Prospective participants must be on a steady dose of the medication to be considered.
7. Prescription of any of the following medications within 30 days prior to enrollment (review of EDC patient chart):
a. Inducers or inhibitors of cytochrome P-450 3A4 (CYP3A4), the main metabolic enzyme of BUP: i. Antiretrovirals or other strong CYP3A4 inhibitors: boceprevir, cobicistat, conivaptan, danoprevir and ritonavir, elvitegravir and ritonavir, grapefruit juice, indinavir and ritonavir, itraconazole, ketoconazole, lopinavir and ritonavir, paritaprevir and ritonavir and ombitasvir and/or dasabuvir, posaconazole, ritonavir, saquinavir and ritonavir, telaprevir, tipranavir and ritonavir, troleandomycin, voriconazole, clarithromycin, diltiazem, idelalisib, nefazodone, nelfinavir, etc.
ii. Moderate CYP3A4 inhibitors: aprepitant, cimetidine, ciprofloxacin, clotrimazole, crizotinib, cyclosporine, dronedarone, erythromycin, fluconazole, fluvoxamine, imatinib, tofisopam, verapamil, etc.
iii. Anticonvulsants or other strong CYP3A4 inducers: carbamazepine, enzalutamide, mitotane, phenytoin, rifampin, St. John's wort, etc.
8. Clinically significant abnormal ECG (such as second- or third-degree heart block, QTc interval ≥500 msec, uncontrolled arrhythmia), and/or history of a myocardial infarction.
9. Heart rate < 55 bpm or symptomatic bradycardia.
10. Systolic blood pressure < 90 mmHg, and/or diastolic blood pressure < 60 mmHg, and/or symptomatic hypotension.
11. Have a history of seizure disorder or severe traumatic brain injury (TBI); per the Ohio State TBI assessment.
12. Self-reported HIV/AIDS, active tuberculosis, and/or active syphilis.
13. Have significant hepatic, pancreatic (e.g., Type I diabetes), gastrointestinal or renal (that would affect absorption, metabolism or excretion of the study drug), endocrine, cardiac, neurological, psychiatric, pulmonary, hematologic, or other disorders (self-reported during Medical History assessment) that a study clinician believes would make study participation unsafe, treatment compliance difficult, or otherwise be determined by the PI to not be a good study candidate.
The following conditions will be permissible at the discretion of the study physician:
i. Type I &II diabetes- participants must meet the following criteria:
1. Participants must be receiving MAT for at least 6 months 2. Hemoglobin A1c levels must be stable and relatively low 3 months prior to study entry and at the time of screening ii. Pancreatitis
1. There must be 12 months between enrollment and last pancreatitis episode iii. Hepatitis
1. Lab work submitted 3 months prior to study entry and at the time of screening should exhibit no elevations in liver functioning tests beyond 3X the upper limit of normal
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Lofexidine (LFX)
LFX starting dosage is two 0.2 mg LFX tablet taken orally 2 times daily (i.e., 0.8 mg/day).
At study visit 2 (Day 3), the dosage is increased to 1.2mg/day (3 tablets, BID).
At visit 3 (Day 5), the dose is increased to the target dose of 1.6mg/day (4 tablets, BID).
Participants enter the flexible dosing period at visit 4, at which point the LFX dose can be maintained at 1.6 mg/day or decreased to 1.2 mg/day based on symptoms and the clinical judgement of the investigator.
The flexible dosing period extends through to visit 6, however, doses will be adjusted during the study as needed.
|
BID dosing, and a max daily dose of 1.6 mg/day
Other Names:
|
Placebo Comparator: Placebo (PLB)
A placebo drug will be employed as the comparison group to active study drug.
|
Placebo
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Opioid Use
Time Frame: 12 weeks
|
Drug-Taking Behavior (% abstinent from illicit opioid use from Week 5 to Week 12 of the active treatment phase) is the primary efficacy endpoint for monitoring the effects of treatment on OUD, which is measured by both urine drug screen (UDS; opioids are detectable for 1-4 days) and timeline follow-back (TLFB) interviews of drug/alcohol use.
|
12 weeks
|
PTSD Symptoms (Checklist)
Time Frame: 12 weeks
|
The primary efficacy endpoint for monitoring the effects of treatment on PTSD symptoms is mean change scores on the PTSD Checklist for DSM-5 (PCL-5), which is recommended by the Department of Veterans Affairs and the Department of Defense (VA/DoD) Clinical Practice Guideline as a quantitative measure of a patient's PTSD symptoms and response to treatment over time.
|
12 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Opioid Withdrawal
Time Frame: 12 weeks
|
Scores on opiate withdrawal scales, including the Subjective Opiate Withdrawal Scale (SOWS) and the Clinical Opiate Withdrawal Scale (COWS), are secondary efficacy endpoints.
A lower total SOWS score (range: 0-64) indicates a more favorable clinical outcome.
A COWS score of 5 to 12 is considered mild, 13 to 24 is moderate, 25 to 36 is moderately severe, and a score exceeding 36 is considered severe withdrawal.
These scales are completed
|
12 weeks
|
PTSD Symptoms
Time Frame: 12 weeks
|
CAPS-5 change score (between screening and Week 12) is a key secondary efficacy endpoint for PTSD
|
12 weeks
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Christopher D. Verrico, PhD, Baylor College of Medicine
- Principal Investigator: Thomas R Kosten, MD, Baylor College of Medicine
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
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
Additional Relevant MeSH Terms
- Mental Disorders
- Chemically-Induced Disorders
- Substance-Related Disorders
- Trauma and Stressor Related Disorders
- Narcotic-Related Disorders
- Stress Disorders, Traumatic
- Stress Disorders, Post-Traumatic
- Opioid-Related Disorders
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Peripheral Nervous System Agents
- Sensory System Agents
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Narcotic Antagonists
- Lofexidine
Other Study ID Numbers
- AS170014-A6
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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