PMID- 33262635 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231112 IS - 1178-7066 (Print) IS - 1178-7066 (Electronic) IS - 1178-7066 (Linking) VI - 13 DP - 2020 TI - Should CYP2C19 Genotyping Be Recommended as a Straight Forward Approach to Optimize Clopidogrel Utilization in Patients with Ischemic Stroke Complicated by Type 2 Diabetes Mellitus? PG - 645-653 LID - 10.2147/PGPM.S279719 [doi] AB - BACKGROUND: There have been few studies on CYP2C19 genotypes and clopidogrel response associated with ischemic stroke (IS), especially IS complicated by type 2 diabetes mellitus (T2DM). This study aimed to investigate the possible association between CYP2C19 polymorphisms and high on-treatment platelet reactivity (HTPR) in IS patients with T2DM in China. PATIENTS AND METHODS: A total of 426 consecutive IS patients with T2DM were enrolled in this case-control study and they were divided into HTPR group and non-HTPR group according to the ADP-induced platelet inhibition (PIADP) assessed by thromboelastography (TEG). Genotypes were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Various clinical and demographic data were also recorded. The association between CYP2C19 genetic variants and platelet function was assessed. RESULTS: Carriers of CYP2C19*2 heterozygous and mutant homozygous genotypes showed significantly lower PIADP than non-carriers (27.2% vs 38.3%, p < 0.001; 27.41% vs 38.3%, p = 0.012, respectively). Compared with the control group, the CYP2C19*2 A allele was more frequent in the HTPR group (34.51% vs 25.82%, p = 0.002). The carriage of CYP2C19*2 mutant allele was significantly associated with increased risk of HTPR (odds ratio (OR) = 1.94, 95% confidence interval (CI) = 1.32-2.85). There was no significant correlation between CYP2C19*3 or *17 genotypes and HTPR risk. CONCLUSION: CYP2C19*2 mutant allele was associated with attenuated platelet response to clopidogrel and increased risk of HTPR in IS patients with T2DM, suggesting that CYP2C19*2 polymorphism might be an important predictor of HTPR in this high-risk population. CI - (c) 2020 Sun et al. FAU - Sun, Jialin AU - Sun J AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. FAU - Leng, Ping AU - Leng P AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. FAU - Sun, Chen AU - Sun C AD - Department of Pharmacy, Qingdao Municipal Hospital, Qingdao 266003, Shandong, People's Republic of China. FAU - Xu, Wen AU - Xu W AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. FAU - Zhao, Zhenhuan AU - Zhao Z AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. FAU - Li, Xiao AU - Li X AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. FAU - Zhang, Xiaolei AU - Zhang X AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. FAU - Li, Jing AU - Li J AD - Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao 266003, Shandong, People's Republic of China. LA - eng PT - Journal Article DEP - 20201123 PL - New Zealand TA - Pharmgenomics Pers Med JT - Pharmacogenomics and personalized medicine JID - 101514107 PMC - PMC7698285 OTO - NOTNLM OT - CYP2C19 OT - clopidogrel OT - high on-treatment platelet reactivity OT - ischemic stroke OT - type 2 diabetes mellitus COIS- The authors report no conflicts of interest in this work. EDAT- 2020/12/03 06:00 MHDA- 2020/12/03 06:01 PMCR- 2020/11/23 CRDT- 2020/12/02 05:32 PHST- 2020/09/08 00:00 [received] PHST- 2020/10/30 00:00 [accepted] PHST- 2020/12/02 05:32 [entrez] PHST- 2020/12/03 06:00 [pubmed] PHST- 2020/12/03 06:01 [medline] PHST- 2020/11/23 00:00 [pmc-release] AID - 279719 [pii] AID - 10.2147/PGPM.S279719 [doi] PST - epublish SO - Pharmgenomics Pers Med. 2020 Nov 23;13:645-653. doi: 10.2147/PGPM.S279719. eCollection 2020.