title: Relationship between response to risperidone, plasma concentrations of risperidone and CYP3A4 polymorphisms in schizophrenia patients.
abstract: In this study, we examined the relationships between plasma concentrations of risperidone and 9-hydroxyrisperidone and polymorphisms of CYP3A4. All 130 schizophrenia patients (45 men, 85 women, age 15-60 years) who met DSM-IV criteria were given risperidone for 8 weeks. Clinical efficacy was determined using the Positive and Negative Syndrome Scale (PANSS). CYP3A4*1G was found to be associated with the change in total PANSS scores (Kruskal-Wallis test, P = 0.021), which was not significant on adjusting for multiple testing. Our study has, for the first time, conducted a genetic association study of the CYP3A4 gene with risperidone response. Further studies on larger groups and on the effects of the longer term risperidone treatment are needed to confirm these results.
authors.affiliation: Bio-X Center, Shanghai JiaoTong University, Shanghai, China, Shanghai Institute of Planned Parenthood Research, Shanghai, China.
authors.forename: J
authors.initials: J
authors.lastname: Du
authors.forename: A
authors.initials: A
authors.lastname: Zhang
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Xuan
authors.forename: L
authors.initials: L
authors.lastname: Yu
authors.forename: R
authors.initials: R
authors.lastname: Che
authors.forename: X
authors.initials: X
authors.lastname: Li
authors.forename: N
authors.initials: N
authors.lastname: Gu
authors.forename: Z
authors.initials: Z
authors.lastname: Lin
authors.forename: G
authors.initials: G
authors.lastname: Feng
authors.forename: Q
authors.initials: Q
authors.lastname: Xing
authors.forename: L
authors.initials: L
authors.lastname: He
mesh_terms: D000293:Adolescent; D000328:Adult; D014150:Antipsychotic Agents / Q000097:blood* / Q000627:therapeutic use*; D019389:Cytochrome P-450 CYP2D6 / Q000235:genetics; D051544:Cytochrome P-450 CYP3A / Q000235:genetics*; D004247:DNA / Q000235:genetics; D004305:Dose-Response Relationship, Drug; D005260:Female; D005838:Genotype; D006801:Humans; D007555:Isoxazoles / Q000097:blood; D008297:Male; D008875:Middle Aged; D000068882:Paliperidone Palmitate; D011110:Polymorphism, Genetic; D011569:Psychiatric Status Rating Scales; D011743:Pyrimidines / Q000097:blood; D018967:Risperidone / Q000097:blood* / Q000627:therapeutic use*; D012559:Schizophrenia / Q000188:drug therapy* / Q000235:genetics*; D012565:Schizophrenic Psychology; D055815:Young Adult
chemical_list: D014150:Antipsychotic Agents; D007555:Isoxazoles; D011743:Pyrimidines; D004247:DNA; D019389:Cytochrome P-450 CYP2D6; D051544:Cytochrome P-450 CYP3A; C510163:CYP3A4 protein, human; D018967:Risperidone; D000068882:Paliperidone Palmitate