The Impact of Cytochrome P450 2C19 Polymorphism on the Occurrence of One-Year In-Stent Restenosis in Patients Who Underwent Percutaneous Coronary Intervention: A Case-Match Study Publisher Pubmed



Nozari Y¹ ; Vosooghi S¹ ; Boroumand M² ; Poorhosseini H¹ ; Nematipour E¹ ; Salarifar M¹ ; Kassaian SE¹ ; Amirzadegan A¹ ; Alidoosti M¹ ; Hajizeinali AM¹ ; Saroukhani S³
Source: Anadolu Kardiyoloji Dergisi Published:2015

Abstract

Objective: In this case-match study, we evaluated the impact of the CYP2C19*2 polymorphism in the occurrence of in-stent restenosis during a 1-year follow-up period despite adequate dual anti-platelet therapy in Iranian patients having undergone percutaneous coronary intervention (PCI). Methods: This study, conducted at a tertiary referral heart center in Tehran, recruited 100 patients: 50 patients had in-stent restenosis after PCI during a 1-year follow-up and were compared to another 50 patients without in-stent restenosis who were individually matched according to sex. In order to evaluate the impact of the CYP2C19*2 polymorphism, case frequency matching was performed with respect to variables previously shown to be predictors of in-stent restenosis. The CYP2C19*2 polymorphism evaluated using real-time PCR methods. Results: Among all 100 patients (mean age=60.09±10.29: 72.0% male), 89 (89%) patients had wild (CYP2C19*1/CYP2C19*1) and 11% had a heterozygous (CYP2C19*1/CYP2C19*2) genotypes, and there was no patient with a completely mutant genotype (CYP2C19*2/CYP2C19*2). Conditional logistic regression analysis showed that there was no significant association between genotype CYP2C19*1/CYP2C19*2 and the occurrence of in-stent restenosis after PCI (OR=2.5, p value=0.273). Conclusion: Our findings indicated that carrying a CYP2C19*2 allele with a functional CYP2C19*1 allele had no significant association with instent restenosis 1 year after PCI. The antiplatelet treatment strategy for non-functional allele carriers is still a matter of controversy. Further studies with larger sample sizes are necessary to determine the prevalence of non-functional alleles in various populations and to achieve a consensus about the effective treatment strategy. © 2015 by Turkish Society of Cardiology.