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张爱玲, Email: ailing87613@163.com; 杨莉萍, Email: yanglp_2000@hotmail.com; ZHANGAi-ling, Email: ailing87613@163.com; YANGLi-ping, Email: yanglp_2000@hotmail.com
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Objective To analyze genotype frequencies of CYP2C19 in healthy Asian population, and to provide evidence-based data for further personalized drug therapy and pharmacogenomics research. Methods Literature was retrieved from digital databases of PubMed, EMbase, The Cochrane Library (Issue 2, 2013), CNKI, WanFang Data, VIP and CBM from their established dates to August, 2013. According to the inclusion and exclusion criteria, the data of the allele frequencies of the gene were extracted, pooled, and analyzed. Results A total of 36 articles were included, involving 15 countries and 9 693 healthy populations. Analysis was conducted on regional features, by regions as China, East Asia (China, Korea and Japan), Southeast Asia (Vietnam, Thailand, Malaysia, Singapore, Myanmar and Indonesia), South Asia (India) and West Asia (Palestine, Lebanon, Iran, Turkey and Jordan). The results showed that the genotype frequencies of *1/*1, *1/*2, *1/*3, *2/*2, *2/*3 and *3/*3 were 37.2%, 41.4%, 6.7%, 9.9%, 4.1% and 0.7% (Chinese, n=4 105); 36.4%, 39.1%, 8.8%, 9.5%, 4.9% and 1.3% (East Asian, n=6 198); 44.9%, 41.1%, 4.7%, 7.0%, 1.8% and 0.6% (Southeast Asian, n=1 933); 43.5%, 42.9%, 0.3%, 12.7%, 0.6% and 0.0% (South Asian, n=361); 77.8%, 18.9%, 0.3%, 2.6%, 0.1% and 0.3% (West Asia, n=1 201); and 43.5%, 37.1%, 6.6%, 8.3%, 3.5% and 1.0% (Asian, n=9 693). Conclusion The present study suggests that there is a great difference on the genotype frequencies of CYP2C19 for different ethnic groups in China, and at different regions in Asia. Besides, genetic variation is impacted by geographical factors such as region and environment.

Citation: 张爱玲, 胡欣, 杨莉萍, ZHANGAi-ling, HUXin, YANGLi-ping. Genotype Frequencies of CYP2C19 in Healthy Asian Populations: A Synthetic Analysis. Chinese Journal of Evidence-Based Medicine, 2014, 14(4): 427-434. doi: 10.7507/1672-2531.20140075 Copy

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