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 {"pairid":110367,"drugid":"RxNorm:7243","drugname":"naltrexone","genesymbol":"OPRM1","guidelinename":"CYP2D6, OPRM1, COMT, and Opioids","guidelineurl":"https://www.clinpgx.org/guideline/PA166251454","cpiclevel":"C","clinpgxlevel":"4","pgxtesting":null,"pmids":["33387367"],"usedforrecommendation":"No","provisional":false}]