title: Polymorphisms in the multidrug resistance-1 (MDR1) gene influence the response to atorvastatin treatment in a gender-specific manner.
abstract: To test the hypothesis that variations in the multidrug resistance-1 gene influence the response to statin treatment, 2 prevalent polymorphisms (G2677T/A and C3435T) were examined in 344 hypercholesterolemic patients treated with atorvastatin (10 mg). The C3435T polymorphism was significantly and independently associated with a smaller reduction in low-density lipoprotein cholesterol and with a larger increase in high-density lipoprotein cholesterol, relative to variant allele carriers, in a gender-specific manner. Also, haplotype determination combined with these polymorphisms identified a subgroup that showed a striking response to treatment, which was not defined by a single polymorphism.
authors.affiliation: Lipid Research Laboratory, Division of Endocrinology Metabolism and Molecular Biology, Tufts-New England Medical Center, Boston, Massachusetts, USA. kajinami@kanazawa-med.ac.jp
authors.forename: Kouji
authors.initials: K
authors.lastname: Kajinami
authors.forename: Margaret E
authors.initials: ME
authors.lastname: Brousseau
authors.forename: Jose M
authors.initials: JM
authors.lastname: Ordovas
authors.forename: Ernst J
authors.initials: EJ
authors.lastname: Schaefer
mesh_terms: D000924:Anticholesteremic Agents / Q000494:pharmacology* / Q000627:therapeutic use; D000069059:Atorvastatin; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D005260:Female; D019450:Genes, MDR / Q000235:genetics*; D006538:Heptanoic Acids / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011758:Pyrroles / Q000494:pharmacology* / Q000627:therapeutic use; D012737:Sex Factors
chemical_list: D000924:Anticholesteremic Agents; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D006538:Heptanoic Acids; D011758:Pyrroles; D000069059:Atorvastatin