Glutamatergic Modulation to Facilitate Naltrexone Initiation in Opioid Dependence
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ClinicalTrials.gov Identifier: NCT02437344 |
Recruitment Status :
Completed
First Posted : May 7, 2015
Results First Posted : September 6, 2017
Last Update Posted : April 8, 2019
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Opioid dependence is a substantial problem associated with significant morbidity and mortality. Extended-release naltrexone has been found effective at reducing opioid use and maintaining abstinence, but its use has been limited by the difficulties encountered with treatment initiation, which involves detoxification from opioids and oral naltrexone titration. Improving the likelihood of a successful transition to naltrexone is therefore an important public health goal.
N-methyl-D-aspartate receptor (NMDA) antagonism has been found to alleviate the signs and symptoms of withdrawal from opioids, as well as to address adaptations associated with chronic opioid use, such as opioid-induced hyperalgesia (increased pain sensitivity). These benefits may persist for at least 72 hours after a single dose. NMDA antagonism may therefore facilitate a rapid transition to naltrexone by reducing discomfort, improving motivation, and ameliorating adaptations associated with drug dependence, such as craving and arousal.
The purpose of this trial is to assess the feasibility of NMDA antagonist-assisted naltrexone initiation in opioid dependent individuals. After administration of extended-release naltrexone, participants will be followed for 4 weeks, and transitioned to appropriate care subsequently (oral naltrexone, extended-release naltrexone).
Condition or disease | Intervention/treatment | Phase |
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Opioid Dependence | Drug: CI-581aa Drug: Naltrexone titration and XR-NTX initiation | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 16 participants |
Allocation: | N/A |
Intervention Model: | Single Group Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Glutamatergic Modulation to Facilitate Naltrexone Initiation in Opioid Dependence |
Study Start Date : | January 2015 |
Actual Primary Completion Date : | December 2016 |
Actual Study Completion Date : | December 2016 |

Arm | Intervention/treatment |
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Experimental: CI-581aa
CI-581aa will be administered 24 hours after last opioid use, and followed by naltrexone dosing
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Drug: CI-581aa
92 minute infusion of CI-581aa
Other Name: NMDA antagonist Drug: Naltrexone titration and XR-NTX initiation participants will be provided a titration of naltrexone that culminates in the injection of XR-NTX
Other Name: naltrexone |
- Successful Naltrexone Initiation [ Time Frame: 2 weeks ]The proportion of participants enrolled in the trial and receiving the infusion to receive XR-NTX
- Withdrawal: Subjective Opioid Withdrawal Scale (SOWS) Scores at Baseline and Administered Subsequently [ Time Frame: 4 days ]Subjective Opioid Withdrawal Scale (SOWS) is a scale out of 64 points assessing withdrawal severity that is administered serially, every several hours, over the course of the naltrexone initiation. The questionnaire assesses symptoms that the patient rates on a scale of 0 (not at all) to 4 (extremely). The difference in total (sum) scores between baseline and end-of-induction will be reported. Scores range from 0 to 64.

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Ages Eligible for Study: | 21 Years to 60 Years (Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Active opioid dependence, with at least one positive utox result; no history of opioid overdose; and not currently using methadone or buprenorphine
- Physically healthy
- No adverse reactions to study medications
- 21-60 years of age
- Capacity to consent and comply with study procedures
- Seeking treatment
Exclusion Criteria:
- Meets DSM IV criteria for current major depression, bipolar disorder, schizophrenia, any psychotic illness, including substance-induced psychosis, and current substance-induced mood disorder with HAMD > 12.
- Physiological dependence on another substance requiring medical management, such as alcohol or benzodiazepines, excluding caffeine, nicotine, and cannabis
- Pregnant or interested in becoming pregnant
- Delirium, Dementia, Amnesia, Cognitive Disorders, or dissociative disorders
- Current suicide risk or a history of suicide attempt within the past 2 years
- On psychotropic or other medication whose effect could be disrupted by participation in the study
- Recent history of significant violence (past 2 years).
- Heart disease as indicated by history, abnormal ECG, previous cardiac surgery.
- Unstable physical disorders which might make participation hazardous such as end-stage AIDS, hypertension (>140/90), anemia, active hepatitis or other liver disease (transaminase levels < 2 X the upper limit of normal will be considered acceptable), or untreated diabetes
- Previous history of CI-581 abuse, and/or a history of adverse reaction/experience wtih prior exposure to CI-581 or benzodiazepines
- BMI > 35, or a history of unmanaged obstructive sleep apnea
- First degree relative with a psychotic disorder (bipolar disorder with psychotic features, schizophrenia, schizoaffective disorder, or psychosis NOS)
- History of opioid overdose over the past 2 years requiring medical intervention
- Currently using methadone or buprenorphine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02437344
United States, New York | |
New York State Psychiatric Institute | |
New York, New York, United States, 10032 |
Principal Investigator: | Elias Dakwar, MD | NYSPI |
Responsible Party: | Elias Dakwar, Assistant Professor of Clinical Psychiatry, New York State Psychiatric Institute |
ClinicalTrials.gov Identifier: | NCT02437344 |
Other Study ID Numbers: |
#7057 |
First Posted: | May 7, 2015 Key Record Dates |
Results First Posted: | September 6, 2017 |
Last Update Posted: | April 8, 2019 |
Last Verified: | April 2019 |
Opioid-Related Disorders Narcotic-Related Disorders Substance-Related Disorders Chemically-Induced Disorders Mental Disorders Naltrexone |
Alcohol Deterrents Narcotic Antagonists Physiological Effects of Drugs Sensory System Agents Peripheral Nervous System Agents |