Pharmacogenetics of Naltrexone for Stimulant Abuse

Status Completed

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.

Clinical Trial 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. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT03226223
Study type	Interventional
Source	New York State Psychiatric Institute
Contact
Status	Completed
Phase	Phase 2
Start date	September 15, 2016
Completion date	July 30, 2020

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