• Kulsoom Farhat, Akbar Waheed, Azhar Hussain, Javeid Iqbal, Qaisar Mansoor, and Muhammad Ismail.
• Department of Pharmacology and Therapeutics, Army Medical College, Rawalpindi.
• J Coll Physicians Surg Pak. 2015 Jul 1; 25 (7): 482-5.

ObjectiveTo investigate the frequency of the single nucleotide polymorphism C1236T in exon 12 of the ABCB1 gene in Pakistani population and to compare it with published data on Asian and Caucasian populations.Study DesignAcross-sectional observational study.Place And Duration Of StudyCombined Military Hospital, Rawalpindi and Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, from August 2012 to May 2013.MethodologyC1236T polymorphism was investigated in 426 Pakistani subjects. The frequency was compared with the published data on other Asian and Caucasian populations.ResultsThe frequencies of ABCB1 C1236T were 16.4% for CC, 44.1% for CT and 39.4% for TT. Pakistanis differed significantly from all the European populations compared in the distribution of the TT genotype of C1236TABCB1 (p < 0.05). The Pakistani population also differed significantly from some of the European populations in the distribution of CC and CT genotype (p < 0.05).ConclusionThere was significant difference in the genotype frequency of the ABCB1 gene compared to other populations. This study has provided a framework for future pharmacogenetic and pharmacokinetic studies on this polymorphic variant of ABCB1 gene in the Pakistani population.

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