Variant Gene Risk Allele Score vda Association Type Original DB Sentence supporting the association PMID PMID Year
dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The OPRM1 A118G polymorphism may help predict individuals' response to an</span>algesia and achieve satisfactory cancer pain control. 30028366

2019

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE There was no significant difference in duration of epidural fentanyl analgesia for the three SNVs (161±68 and 143±51 min for wild type and allele carriers of the 118A>G SNV respectively [P=0.08]). 29756748

2018

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The aim of this study was therefore to address the interaction between the single nucleotide polymorphisms opioid receptor mu 1 (OPRM1) rs1799971 and catechol-O-methyltransferase (COMT) rs4680 on placebo analgesia. 30130297

2018

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE Assays of plasma concentrations of morphine and metabolites (morphine 3-glucuronide and morphine 6-glucuronide) were performed and common polymorphisms in four candidate genes [OPRM1 A118G rs1799971; P-glycoprotein (ABCB1) T3435C (rs1045642) and G2677T/A (rs2032582); COMT Val 158 Met (rs4680)] were analysed.Morphine was titrated by staff in the postanaesthesia care unit (PACU) and in the ward patient-controlled intravenous analgesia was used for 24 h. 29474345

2018

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE This systematic review reveals that CYP2D6, OPRM1 A118G, UGT2B7 C802T and ABCB1 G2677AT may contribute to postpartum analgesia or adverse events. 26652709

2016

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE To further understand the human implications of genetic variation within the opioid system in pain and opioid-mediated placebo responses, we investigated the association between the functional single-nucleotide polymorphism (SNP) in the μ-opioid receptor gene (OPRM1), A118G, and psychophysical responses, personality traits, and neurotransmitter systems (dopamine (DA), opioid) related to pain and placebo analgesia. 25308352

2015

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The 118A>G variant was associated significantly with the amount of oxycodone requested for adequate analgesia (P = .003, β = .016). 25239082

2014

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The present study aimed to investigate the effect of cytochrome P450 3A4 (CYP3A4)*18B polymorphisms and the interaction of the µ opioid receptor gene (OPRM1) A118G and CYP3A4*18B polymorphisms on postoperative fentanyl analgesia in Chinese Han patients undergoing radical gastrectomy. 23313934

2013

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The time-course for pruritus exactly paralleled the time-course for analgesia and was affected by hospital (P=0.006) and by ethnic group (P=0.03), but not by A118G. 23592691

2013

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The OPRM1 A118G polymorphism may help predict individuals' response to epidural labor analgesia and so optimize postoperative pain control. 23909491

2013

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE Modeling the influence of the A118G polymorphism in the OPRM1 gene and of noxious stimulation on the synergistic relation between propofol and remifentanil: sedation and analgesia in endoscopic procedures. 23503369

2013

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The A118G single-nucleotide polymorphism of human μ-opioid receptor gene and use of labor analgesia. 22527985

2012

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE Study of the OPRM1 A118G genetic polymorphism associated with postoperative nausea and vomiting induced by fentanyl intravenous analgesia. 21150856

2011

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The recessive G allele in the A118G polymorphism may have protective effects against significant pruritus after epidural morphine for post-cesarean analgesia. 21039348

2010

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE Association of human micro-opioid receptor gene polymorphism A118G with fentanyl analgesia consumption in Chinese gynaecological patients. 20003118

2010

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE The mu-opioid receptor gene polymorphism 118A>G depletes alfentanil-induced analgesia and protects against respiratory depression in homozygous carriers. 16906017

2006

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE Association of mu-opioid receptor gene polymorphism (A118G) with variations in morphine consumption for analgesia after total knee arthroplasty. 16879459

2006

dbSNP: rs1799971
rs1799971
0.100 GeneticVariation BEFREE Human opioid receptor A118G polymorphism affects intravenous patient-controlled analgesia morphine consumption after total abdominal hysterectomy. 16871067

2006

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE The COMT gene polymorphism was associated with labor anxiety and analgesia among pregnant women, and the Val158Met mutation in the <i>COMT</i> gene could lead to worse labor anxiety and less-effective labor analgesia in pregnant women. 30881091

2019

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE Assays of plasma concentrations of morphine and metabolites (morphine 3-glucuronide and morphine 6-glucuronide) were performed and common polymorphisms in four candidate genes [OPRM1 A118G rs1799971; P-glycoprotein (ABCB1) T3435C (rs1045642) and G2677T/A (rs2032582); COMT Val 158 Met (rs4680)] were analysed.Morphine was titrated by staff in the postanaesthesia care unit (PACU) and in the ward patient-controlled intravenous analgesia was used for 24 h. 29474345

2018

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE Assays of plasma concentrations of morphine and metabolites (morphine 3-glucuronide and morphine 6-glucuronide) were performed and common polymorphisms in four candidate genes [OPRM1 A118G rs1799971; P-glycoprotein (ABCB1) T3435C (rs1045642) and G2677T/A (rs2032582); COMT Val 158 Met (rs4680)] were analysed.Morphine was titrated by staff in the postanaesthesia care unit (PACU) and in the ward patient-controlled intravenous analgesia was used for 24 h. 29474345

2018

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE Influence of catechol-O-methyltransferase Val158Met on fear of pain and placebo analgesia. 28968343

2018

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE The aim of this study was therefore to address the interaction between the single nucleotide polymorphisms opioid receptor mu 1 (OPRM1) rs1799971 and catechol-O-methyltransferase (COMT) rs4680 on placebo analgesia. 30130297

2018

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE Statistically significant associations were found between COMT rs4633 and rs4680 genotypes and the amount of morphine self-administered through a patient-controlled analgesia pump. 25963335

2016

dbSNP: rs4680
rs4680
0.060 GeneticVariation BEFREE The COMT V158M variant has been associated with decreased morphine requirements for analgesia. 18370847

2008