title: Cyp2d6*3, *4, *5 and *6 polymorphisms and antipsychotic-induced extrapyramidal side-effects in patients receiving antipsychotic therapy.
abstract: 1. The aim of the present study was to examine the relationship between CYP2D6 polymorphisms and the risk of antipsychotic (AP)-induced extrapyramidal symptoms (EPS) in patients receiving AP treatment. The allele status for CYP2D6*3, CYP2D6*4, CYP2D6*5 and CYP2D6*6 was determined in 267 patients receiving AP therapy. Seventy-nine cases presenting with EPS (Simpson-Angus Scale 3) and 188 controls without EPS (Simpson-Angus > 3) took part in the study. 2. We found a non-significant over-representation of poor metaboliser genotypes among cases, but a significant association between the mutant homozygous genotype for CYP2D6*4 (odds ratio (OR) 4.1, 95% confidence interval (CI) 1.01-16, permutated P value 0.01) and the heterozygous genotype for CYP2D6*6 (OR 5.4, 95% CI 1.13-18, permutated P value 0.003) and the risk of suffering EPS. 3. These results suggest that the CYP2D6 genotype may be a contributory factor in the development of EPS in patients undergoing AP therapy.
authors.affiliation: Department of Pharmacology, School of Medicine, IDIBAPS, University of Barcelona, Barcelona, Spain.
authors.forename: Anna
authors.initials: A
authors.lastname: Crescenti
authors.forename: Sergi
authors.initials: S
authors.lastname: Mas
authors.forename: Patricia
authors.initials: P
authors.lastname: Gassó
authors.forename: Eduard
authors.initials: E
authors.lastname: Parellada
authors.forename: Miquel
authors.initials: M
authors.lastname: Bernardo
authors.forename: Amalia
authors.initials: A
authors.lastname: Lafuente
mesh_terms: D000328:Adult; D000483:Alleles; D014150:Antipsychotic Agents / Q000009:adverse effects*; D001480:Basal Ganglia Diseases / Q000201:enzymology / Q000235:genetics; D015331:Cohort Studies; D019389:Cytochrome P-450 CYP2D6 / Q000235:genetics* / Q000378:metabolism; D004409:Dyskinesia, Drug-Induced / Q000201:enzymology* / Q000235:genetics*; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic / Q000187:drug effects / Q000235:genetics*; D011446:Prospective Studies
chemical_list: D014150:Antipsychotic Agents; D019389:Cytochrome P-450 CYP2D6