en Association of ABCB1 (C3435T) and ABCC1 (G2012T) Polymorphisms with Clinical Response to Atorvastatin in Iranian Patients with Primary Hyperlipidemia Molecular Genetics & Genomics Molecular Genetics & Genomics مقاله کوتاه Short Communication <p style="direction: ltr; "><strong>Background:&nbsp; </strong>Atorvastatin is prescribed for the primary and the secondary prevention of coronary artery diseases. A wide variation in inter-individual statin response suggests that genetic differences may contribute to this variation. This study investigated the association of <em>ABCB1</em> (C3435T) and <em>ABCC1</em> (G2012T) polymorphisms with clinical response to atorvastatin in Iranian primary hyperlipidemic patients. <strong>Methods</strong>: Individuals (n=179) with primary hypercholesterolemia were enrolled, and peripheral blood samples were collected. Genotyping of two polymorphisms were performed by amplification refractory mutation system PCR. <strong>Results:</strong> Following four weeks of treatment, a significant reduction of LDL-C was observed in variant groups (CT+TT) of <em>ABCB1</em> (<em>P</em>=0.018) and wild-type group (GG) of <em>ABCC1 </em>genes (<em>P</em>=0.029). Logistic regression analysis revealed a significant difference between male and female responses to 10 mg/day atorvastatin (<em>P</em>=0.004, odds ratio=0.2, CI 95%=0.06-0.6). <strong>Conclusion:</strong> Our finding indicated that these polymorphisms may be attributed to LDL-C serum levels in the primary hypercholesterolemia patients receiving atorvastatin.</p> Hypercholesterolemia, Statin, Gene polymorphisms 120 125 http://ibj.pasteur.ac.ir/browse.php?a_code=A-10-1-617&slc_lang=en&sid=1 Niusha Behdad No Department of Pharmacotherapy, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran Javad Kojuri No Department of Cardiology, Faculty of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran Negar Azarpira No Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran Amir Masoomi No Department of Pharmacotherapy, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran Soha Namazi snamazi@sums.ac.ir Yes Department of Pharmacotherapy, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran