Hartwell Hartwell EE EE Feinn Feinn R R Morris Morris PE PE Systematic review and meta-analysis of the moderating effect of rs1799971 in OPRM1, the Mu-opioid receptor gene, on response to naltrexone treatment of alcohol use disorder Systematic review and meta-analysis of the moderating effect of rs1799971 in OPRM1, the Mu-opioid receptor gene, on response to naltrexone treatment of alcohol use disorder Addiction Addiction 2020 2020 10.1111/add.14975 10.1111/add.14975 supplied-pmid 31961981? The gene discussed is OPRM1; the disease is alcohol abuse.