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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT03226223
Other study ID # #7347
Secondary ID
Status Completed
Phase Phase 2
First received
Last updated
Start date September 15, 2016
Est. completion date July 30, 2020

Study information

Verified date November 2020
Source New York State Psychiatric Institute
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This investigation will be the first study assessing genetic modulation of naltrexone's NTX effects upon the abuse liability of a stimulant drug (methamphetamine). The study team will assess the ability of oral NTX to block the reinforcing and positive subjective effects of intranasal (IN) methamphetamine (30mg/70kg). This investigation could identify an important Gene x Pharmacological interaction, contributing to the personalization of stimulant abuse pharmacotherapy.


Description:

A recent meta-analysis concluded that the OPRM1 A118G SNP (rs1799971) significantly moderates the treatment efficacy of Naltrexone (NTX) in treating alcohol abuse, increasing the treatment efficacy by over 2-fold among G-allele carriers (AG/GG). The proposed application would be the first to investigate the moderating effect of this genotype in the efficacy of NTX to treat stimulant abuse. More specifically, the study team proposes to investigate the interaction between NTX and intranasal (IN) methamphetamine (30mg/70kg). Participants who meet DSM criteria for mild-to-severe stimulant use disorder (N=up to 70) will complete 4 testing sessions where drug effects are tested following pretreatment with NTX (0, 50 mg). Naltrexone pretreatment effects upon the abuse liability of IN methamphetamine will be assessed using self-report measurements of positive subjective effects and drug self-administration. Medication effects on these validated predictors of abuse potential will be compared between A118G A allele homozygotes (AA) and G-allele carriers (AG/GG; an anticipated 25% of the total sample), in order to assess genetic moderation of treatment outcome.


Recruitment information / eligibility

Status Completed
Enrollment 18
Est. completion date July 30, 2020
Est. primary completion date July 15, 2019
Accepts healthy volunteers No
Gender All
Age group 21 Years to 50 Years
Eligibility Inclusion Criteria: 1. Male or female age 21 to 50 years 2. DSM-5 criteria for mild-to-severe stimulant use disorder, along with intravenous, intranasal or smoked use of amphetamine-type stimulants in amounts equal to or greater than administered in the current study. 3. Able to give written informed consent to participate. 4. Females must be either post-menopausal, surgically sterilized, or using an acceptable method of contraception (double-barrier method like a condom with a spermicidal lubricant) to participate in this study. 5. Racially Caucasian or of European descent. Exclusion Criteria: 1. Currently seeking treatment for a substance use disorder. 2. DSM-5 criteria for moderate-to-severe substance use disorders (except those involving cocaine, amphetamines and nicotine). 3. Psychiatric condition that may affect the participants' ability to provide informed consent (e.g., psychotic disorder), or make participation hazardous for the participant or study staff (e.g., severe depression/suicidality, or risk of violence). 4. Uncontrolled neurological, cardiovascular, and hepatic diseases, active tuberculosis, or any other disorder that might make administration of study medications hazardous. 5. Gastrointestinal or renal disease that would significantly impair absorption, metabolism or excretion of study drug, or require medication or medical treatment. 6. Current treatment with a psychotropic medication that in the physician's judgement would interfere with the study endpoints. 7. History of allergy, adverse reaction, or sensitivity to amphetamines. 8. Medical conditions that may make study participation hazardous: - History of seizures or cardiac risk conditions (unstable angina, cardiac arrhythmias, chest pain, strong palpitations (subjectively defined as the feeling that the heart is beating too hard, too fast, skipping a beat, or fluttering). - Elevated liver function tests (i.e., AST and ALT > 3 times the upper limit of normal). - Impaired renal function (creatinine > 1.2). - Hypertension (>140/90). - Asthmatic symptoms within the past 3 years.

Study Design


Intervention

Drug:
Intranasal Methamphetamine
Intranasal Methamphetamine HCL administered at a dose of 30mg per 70 kg of the participants' body weight)

Locations

Country Name City State
United States New York State Psychiatric Institute New York New York

Sponsors (1)

Lead Sponsor Collaborator
New York State Psychiatric Institute

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Methamphetamine Self-Administration To assess the reinforcing effects of methamphetamine, participants complete a drug self-administration procedure. The outcome measure for this procedure is the number of operant responses (clicks on a mouse) participant are willing to make in order to receive drug (methamphetamine). 1 day.
Secondary Positive Subjective Effects of Methamphetamine. Participant ratings of methamphetamine "Liking," on a 100 mm visual analog scale. Participants are asked to indicate on a 100 mm line the extent to which they agree with the description of the drug provided. The 0 mm end of the line indicates "Not at All," while the 100 mm indicates "Extremely." 1 day
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