Impacts of GRIN3A, GRM6 and TPH2 genetic polymorphisms on quality of life in methadone maintenance therapy population

• Published in: PloS one Vol. 13; no. 7; p. e0201408
• Main Authors: Wang, Ruey-Yun, Chen, Hsiu-Ju, Huang, Chieh-Liang, Wang, Jiun-Yi, Lee, Tsui-Er, Lee, Hsiang-Yen, Hung, Chin-Chuan
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 30.07.2018; Public Library of Science (PLoS)
• Subjects: Addictions; Adult; Alcoholism; Analysis; Bioinformatics; Biology and Life Sciences; Biosynthesis; Brain diseases; Brain research; Cancer therapies; Care and treatment; Chromosomes; Cocaine; Dosage and administration; Drug abuse; Female; Genes; Genetic aspects; Genetic diversity; Genetic variance; Genotypes; Genotyping; Haplotypes; Health aspects; HIV; Hospitals; Human immunodeficiency virus; Humans; Male; Medicine and Health Sciences; Methadone; Methadone - administration & dosage; Middle Aged; Narcotics; Opiates; Opioid abuse; Opioid-Related Disorders - drug therapy; Opioid-Related Disorders - genetics; Opioids; Pharmacy; Polymorphism, Single Nucleotide; Population; Public health; Quality of Life; Receptors, Glutamate - genetics; Receptors, N-Methyl-D-Aspartate - genetics; Regression analysis; Regression models; Risk factors; Serotonin; Single nucleotide polymorphisms; Single-nucleotide polymorphism; Social Sciences; Studies; Substance abuse treatment; Suicides & suicide attempts; Tryptophan Hydroxylase - genetics; Asia; China; Taiwan
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0201408

Opioid addiction is a major public health issue worldwide. Methadone maintenance treatment (MMT) is used to detoxify users of illicit opiates, but drug relapse is common and associated with poor quality of life (QoL). This study investigated the associations between the GRIN3A, GRM6, and TPH2 genetic variants and QoL in the MMT population. A total of 319 participants were included in the study, and genotyping of GRIN3A, GRM6, and TPH2 genes was performed using the Sequenom iPLEX. Associations between genotypes and the domains of QoL were examined through posthoc analysis with LSMEANS syntax using SAS 9.1.3. The single nucleotide polymorphisms rs9325202 and rs1487275 in the TPH2 gene were significantly associated with the QoL domain of physical functioning. The least absolute shrinkage and selection operator regression model revealed that the risk allele rs1487275-G was significantly correlated with the domain of physical functioning when clinical characteristics were considered as covariates. The results of the present study illuminate the importance of the genetic basis of QoL in the MMT population, and suggest that genotypes should be considered as a potential QoL indicator.