Indian Journal of Clinical Biochemistry

, Volume 33, Issue 2, pp 208–213 | Cite as

Genetic Polymorphism of CYP2C9 Among Sistani Ethnic Group in Gorgan

  • Abdoljalal Marjani
  • Aman Mohammad Gharanjik
Original Article


Cytochrome P450 2C9 (CYP2C9) is involved in metabolism of many important drugs and its genotype variations is thought to affect drug efficacy and the treatment process. The aim of this study was to assess the distribution of CYP2C9 allele and genotypic variants in Sistani ethnic group, living in Gorgan, South East of Caspian Sea and North East of Iran. This study included 140 Sistani, referred to the health center of Gorgan. CYP2C9 genotyping was carried out by polymerase chain reaction–restriction fragment length polymorphism technique. The allele frequency of CYP2C9*1, CYP2C9*2 and CYP2C9*3 was 76.1, 16.1 and 7.8%, respectively. The frequency of CYP2C9*1/*1, CYP2C9*1/*2, CYP2C9*1/*3, CYP2C9*2/*2, CYP2C9*2/*3 and CYP2C9*3/*3 genotypes was 53.9, 22.1, 11.4, 2.9, 4.3% and nil, respectively. In this study the genotypic variations of the CYP2C9 allele among the Sistani ethnic group was investigated and great differences were observed in comparison to other populations. Our findings suggest that different genotypes of CYP2C9 may influence the pharmacokinetics of some drugs. More studies on the pharmacokinetic effects of CYP2C9 genotypes may help physicians choose optimal dosage of some drugs for treatment and prevention of their side effects. Since different ethnic groups from all over the world use medications, it suggests to investigate the pharmacokinetic effects of CYP2C9 genotypes in different populations.


Polymorphism of CYP2C9 Sistanee ethnic group Polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) 



The authors would like to thank the Research Deputy of Golestan University of Medical Sciences for financial support. This research project was derived from research proposal in Clinical Biochemistry. The corresponding author wishes to thank Mr. Aman Mohammad Gharanjik for his sincere help.


This work has been supported by the Research Deputy of Golestan University of Medical Science.

Compliance with Ethical Standards

Conflict of interest

The authors declared no conflicts of interest.


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Copyright information

© Association of Clinical Biochemists of India 2017

Authors and Affiliations

  1. 1.Metabolic Disorders Research Center, Department of Biochemistry and Biophysics, Gorgan Faculty of MedicineGolestan University of Medical SciencesGorganIran
  2. 2.Student Research Committee, Gorgan Faculty of MedicineGolestan University of Medical SciencesGorganIran

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