PMID- 29912955 OWN - NLM STAT- MEDLINE DCOM- 20190411 LR - 20190411 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 13 IP - 6 DP - 2018 TI - Oxytocin receptor gene variations and socio-emotional effects of MDMA: A pooled analysis of controlled studies in healthy subjects. PG - e0199384 LID - 10.1371/journal.pone.0199384 [doi] LID - e0199384 AB - Methylenedioxymethamphetamine (MDMA) increases oxytocin, empathy, and prosociality. Oxytocin plays a critical role in emotion processing and social behavior and has been shown to mediate the prosocial effects of MDMA in animals. Genetic variants, such as single-nucleotide polymorphisms (SNPs), of the oxytocin receptor (OXTR) may influence the emotional and social effects of MDMA in humans. The effects of common genetic variants of the OXTR (rs53576, rs1042778, and rs2254298 SNPs) on the emotional, empathogenic, and prosocial effects of MDMA were characterized in up to 132 healthy subjects in a pooled analysis of eight double-blind, placebo-controlled studies. In a subset of 53 subjects, MDMA produced significantly greater feelings of trust in rs1042778 TT genotypes compared with G allele carriers. The rs53576 and rs225498 SNPs did not moderate the subjective effects of MDMA in up to 132 subjects. None of the SNPs moderated MDMA-induced impairments in negative facial emotion recognition or enhancements in emotional empathy in the Multifaceted Empathy Test in 69 subjects. MDMA significantly increased plasma oxytocin concentrations. MDMA and oxytocin concentrations did not differ between OXTR gene variants. The present results provide preliminary evidence that OXTR gene variations may modulate aspects of the prosocial subjective effects of MDMA in humans. However, interpretation should be cautious due to the small sample size. Additionally, OXTR SNPs did not moderate the subjective overall effect of MDMA (any drug effect) or feelings of "closeness to others". TRIAL REGISTRATION: ClinicalTrials.gov: http://www.clinicaltrials.gov, No: NCT00886886, NCT00990067, NCT01136278, NCT01270672, NCT01386177, NCT01465685, NCT01771874, and NCT01951508. FAU - Vizeli, Patrick AU - Vizeli P AD - Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel and University of Basel, Basel, Switzerland. FAU - Liechti, Matthias E AU - Liechti ME AUID- ORCID: 0000-0002-1765-9659 AD - Division of Clinical Pharmacology and Toxicology, Department of Biomedicine and Department of Clinical Research, University Hospital Basel and University of Basel, Basel, Switzerland. LA - eng SI - ClinicalTrials.gov/NCT00886886 SI - ClinicalTrials.gov/NCT01386177 SI - ClinicalTrials.gov/NCT01951508 SI - ClinicalTrials.gov/NCT00990067 SI - ClinicalTrials.gov/NCT01270672 SI - ClinicalTrials.gov/NCT01465685 SI - ClinicalTrials.gov/NCT01771874 SI - ClinicalTrials.gov/NCT01136278 PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20180618 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (OXTR protein, human) RN - 0 (Receptors, Oxytocin) RN - 50-56-6 (Oxytocin) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Adolescent MH - Adult MH - Alleles MH - Empathy/drug effects/genetics MH - Female MH - Genotype MH - Humans MH - Male MH - N-Methyl-3,4-methylenedioxyamphetamine/*administration & dosage/adverse effects MH - Oxytocin/antagonists & inhibitors/*genetics MH - Polymorphism, Single Nucleotide/genetics MH - Receptors, Oxytocin/*genetics MH - Social Behavior MH - Social Behavior Disorders/*drug therapy/genetics/pathology MH - Young Adult PMC - PMC6005537 COIS- The authors have declared that no competing interests exist. EDAT- 2018/06/19 06:00 MHDA- 2019/04/12 06:00 PMCR- 2018/06/18 CRDT- 2018/06/19 06:00 PHST- 2017/11/23 00:00 [received] PHST- 2018/03/26 00:00 [accepted] PHST- 2018/06/19 06:00 [entrez] PHST- 2018/06/19 06:00 [pubmed] PHST- 2019/04/12 06:00 [medline] PHST- 2018/06/18 00:00 [pmc-release] AID - PONE-D-17-38437 [pii] AID - 10.1371/journal.pone.0199384 [doi] PST - epublish SO - PLoS One. 2018 Jun 18;13(6):e0199384. doi: 10.1371/journal.pone.0199384. eCollection 2018.