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Kim JH, Lee SJ, Cha JJ, Park JH, Hong SJ, Ahn TH, Kim BK, Chang K, Park Y, Song YB, Ahn SG, Suh JW, Lee SY, Cho JR, Her AY, Jeong YH, Kim HS, Kim MH, Shin ES, Lim DS. Prognostic Impact of CYP2C19 Genotypes on Long-Term Clinical Outcomes in Older Patients After Percutaneous Coronary Intervention. J Am Heart Assoc 2024; 13:e032248. [PMID: 38761068 PMCID: PMC11179831 DOI: 10.1161/jaha.123.032248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/17/2024] [Indexed: 05/20/2024]
Abstract
BACKGROUND Carriers of CYP2C19 loss-of-function alleles have increased adverse events after percutaneous coronary intervention, but limited data are available for older patients. We aimed to evaluate the prognostic impact of CYP2C19 genotypes on clinical outcomes in older patients after percutaneous coronary intervention. METHODS AND RESULTS The study included 1201 older patients (aged ≥75 years) who underwent percutaneous coronary intervention and received clopidogrel-based dual antiplatelet therapy in South Korea. Patients were grouped on the basis of CYP2C19 genotypes. The primary outcome was 3-year major adverse cardiac events, defined as a composite of cardiac death, myocardial infarction, and stent thrombosis. Older patients were grouped into 3 groups: normal metabolizer (36.6%), intermediate metabolizer (48.1%), and poor metabolizer (15.2%). The occurrence of the primary outcome was significantly different among the groups (3.1, 7.0, and 6.2% in the normal metabolizer, intermediate metabolizer, and poor metabolizer groups, respectively; P=0.02). The incidence rate of all-cause death at 3 years was greater in the intermediate metabolizer and poor metabolizer groups (8.1% and 9.2%, respectively) compared with that in the normal metabolizer group (3.5%, P=0.03) without significant differences in major bleeding. In the multivariable analysis, the intermediate metabolizer and poor metabolizer groups were independent predictors of 3-year clinical outcomes. CONCLUSIONS In older patients, the presence of any CYP2C19 loss-of-function allele was found to be predictive of a higher incidence of major adverse cardiac events within 3 years following percutaneous coronary intervention. This finding suggests a need for further investigation into an optimal antiplatelet strategy for older patients. REGISTRATION URL: https://clinicaltrials.gov. Identifier: NCT04734028.
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Affiliation(s)
- Ju Hyeon Kim
- Department of Cardiology, Cardiovascular Center Korea University Anam Hospital, Korea University College of Medicine Seoul South Korea
| | | | - Jung-Joon Cha
- Department of Cardiology, Cardiovascular Center Korea University Anam Hospital, Korea University College of Medicine Seoul South Korea
| | - Jae Hyoung Park
- Department of Cardiology, Cardiovascular Center Korea University Anam Hospital, Korea University College of Medicine Seoul South Korea
| | - Soon Jun Hong
- Department of Cardiology, Cardiovascular Center Korea University Anam Hospital, Korea University College of Medicine Seoul South Korea
| | - Tae Hoon Ahn
- Department of Cardiology Heart and Brain Institute, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine Gwangmyeong-si South Korea
| | | | - Kiyuk Chang
- Division of Cardiology, Department of Internal Medicine College of Medicine, Catholic University of Korea Seoul South Korea
| | - Yongwhi Park
- Department of Internal Medicine Gyeongsang National University School of Medicine and Cardiovascular Center, Gyeongsang National University Changwon Hospital Changwon South Korea
| | - Young Bin Song
- Division of Cardiology, Department of Medicine, Samsung Medical Center Sungkyunkwan University School of Medicine Seoul South Korea
| | - Sung Gyun Ahn
- Department of Cardiology Yonsei University Wonju Severance Christian Hospital Wonju South Korea
| | - Jung-Won Suh
- Department of Cardiology, Department of Internal Medicine Seoul National University Bundang Hospital, Seoul National University College of Medicine Seoul South Korea
| | - Sang Yeub Lee
- Department of Cardiology Heart and Brain Institute, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine Gwangmyeong-si South Korea
| | - Jung Rae Cho
- Cardiology Division, Department of Internal Medicine, Kangnam Sacred Heart Hospital Hallym University College of Medicine Seoul South Korea
| | - Ae-Young Her
- Division of Cardiology, Department of Internal Medicine Kangwon National University School of Medicine Chuncheon South Korea
| | - Young-Hoon Jeong
- Department of Cardiology Heart and Brain Institute, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine Gwangmyeong-si South Korea
| | - Hyo-Soo Kim
- Cardiovascular Center, Department of Internal Medicine Seoul National University Hospital Seoul South Korea
| | - Moo Hyun Kim
- Department of Cardiology Dong-A University Hospital Busan South Korea
| | - Eun-Seok Shin
- Division of Cardiology Ulsan University Hospital, University of Ulsan College of Medicine Ulsan South Korea
| | - Do-Sun Lim
- Department of Cardiology, Cardiovascular Center Korea University Anam Hospital, Korea University College of Medicine Seoul South Korea
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Zhang Y, Ran Q, Yin K, Wang Y, Liu J, Zong Y, Wang Y, Cao Y. The effects of CYP2C19 genotype polymorphism and clopidogrel resistance on ischemic event occurrence in patients with peripheral arterial disease undergoing revascularization: A prospective cohort study. Thromb Res 2024; 236:37-50. [PMID: 38387302 DOI: 10.1016/j.thromres.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 02/07/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
INTRODUCTION Peripheral arterial disease (PAD) affects approximately 236 million people worldwide. Therefore, this study aimed to investigate the relationship between CYP2C19 genotype polymorphisms and clopidogrel resistance (CR) following revascularization in patients with PAD. MATERIALS AND METHODS In total, 345 patients who underwent PAD revascularization were monitored for five years and risk factors for ischemic events were identified. Platelet reactivity and CYP2C19 genotypes were measured, and patients were classified as normal, intermediate, or poor metabolizers based on their genotypes. The study endpoint was defined as an ischemic event, that encompassed major adverse cardiovascular or limb events, or all-cause death. RESULTS In this study, ischemic events following PAD revascularization were associated with patient age, prior minor amputation, the Rutherford category before revascularization, indications for revascularization, index ankle-branchial index before revascularization, CYP2C19 phenotypes, and CR. Intermediate and poor metabolism, the Rutherford category before revascularization, and CR were independent risk factors for ischemic events in patients after PAD revascularization. Similarly, intermediate and poor metabolism, the Rutherford category before revascularization, and CR were independent risk factors for ischemic events in patients with PAD after revascularization within five years. Intermediate and poor metabolizers had a higher platelet reactivity and risk of CR than normal metabolizers. However, poor metabolizers had a higher platelet reactivity and risk of CR than intermediate metabolizers. Furthermore, the hazard ratio for ischemic events increased with platelet reactivity. This effect was more prevalent in intermediate and poor metabolizers than in normal metabolizers. CONCLUSIONS Ischemic events in patients after PAD revascularization were affected by independent risk factors. Decreased clopidogrel metabolism increased the platelet reactivity and CR in patients after PAD revascularization. Furthermore, high platelet reactivity was associated with an increased risk of ischemic events in patients with intermediate and poor metabolism.
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Affiliation(s)
- Yongkang Zhang
- Diagnosis and Treatment Center of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Qingzhi Ran
- Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Kangli Yin
- Diagnosis and Treatment Center of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yinkai Wang
- Rehabilitation Treatment Center, The First Rehabilitation Hospital of Shanghai, Shanghai, China
| | - Jiarui Liu
- Diagnosis and Treatment Center of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuan Zong
- Diagnosis and Treatment Center of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yuzhen Wang
- Diagnosis and Treatment Center of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yemin Cao
- Diagnosis and Treatment Center of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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3
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Okubo K, Kudo T, Yoshihara S, Nakabayashi Y, Nakauchi K, Tanaka A, Saito M, Tsujisawa A, Goda H, Yamagishi Y, Otake C, Makino K, Takahashi H, Ito K. Physiologically based pharmacokinetic model analysis of the inhibitory effect of vonoprazan on the metabolic activation of proguanil. Drug Metab Pharmacokinet 2024; 54:100537. [PMID: 38086197 DOI: 10.1016/j.dmpk.2023.100537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/15/2023] [Accepted: 10/30/2023] [Indexed: 02/06/2024]
Abstract
We previously reported that repeated oral administration of vonoprazan (VPZ) followed by oral administration of proguanil (PG) in healthy adults increased blood concentration of PG and decreased blood concentration of its metabolite cycloguanil (CG) compared with administration of PG alone. In this study, we investigated whether this interaction can be quantitatively explained by VPZ inhibition of PG metabolism. In an in vitro study using human liver microsomes, VPZ inhibited CG formation from PG in a concentration-dependent manner, and the inhibition was enhanced depending on preincubation time. Then, a physiologically based pharmacokinetic (PBPK) model analysis was performed incorporating the obtained inhibition parameters. By fitting the blood concentration profiles of VPZ and PG/CG after VPZ and PG were orally administered alone to our PBPK model, parameters were obtained which can reproduce their concentration profiles. In contrast, when the VPZ inhibition parameters for CG formation from the in vitro study were incorporated, the predicted blood PG and CG concentrations were unchanged; the apparent dissociation constant had to be set to about 1/23 of the obtained in vitro value to reproduce the observed interaction. Further comprehensive evaluation is required, including the possibility that mechanisms other than metabolic inhibition may be involved.
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Affiliation(s)
- Kenjiro Okubo
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Toshiyuki Kudo
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan.
| | - Sae Yoshihara
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Yu Nakabayashi
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Kana Nakauchi
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Akimi Tanaka
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Moe Saito
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Ayumi Tsujisawa
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Hitomi Goda
- Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan
| | - Yoshiaki Yamagishi
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan.
| | - Chinatsu Otake
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, 278-8510, Japan
| | - Kosho Makino
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, 278-8510, Japan.
| | - Hideyo Takahashi
- Department of Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba, 278-8510, Japan.
| | - Kiyomi Ito
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan; Research Institute of Pharmaceutical Sciences, Musashino University, 1-1-20 Shinmachi, Nishitokyo-shi, Tokyo, 202-8585, Japan.
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Jung YS, Jin BH, Park MS, Kim CO, Chae D. Population pharmacokinetic-pharmacodynamic modeling of clopidogrel for dose regimen optimization based on CYP2C19 phenotypes: A proof of concept study. CPT Pharmacometrics Syst Pharmacol 2024; 13:29-40. [PMID: 37775990 PMCID: PMC10787215 DOI: 10.1002/psp4.13053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 10/01/2023] Open
Abstract
Clopidogrel is an antiplatelet drug used to reduce the risk of acute coronary syndrome and stroke. It is converted by CYP2C19 to its active metabolite; therefore, poor metabolizers (PMs) of CYP2C19 exhibit diminished antiplatelet effects. Herein, we conducted a proof-of-concept study for using population pharmacokinetic-pharmacodynamic (PK-PD) modeling to recommend a personalized clopidogrel dosing regimen for individuals with varying CYP2C19 phenotypes and baseline P2Y12 reaction unit (PRU) levels. Data from a prospective phase I clinical trial involving 36 healthy male participants were used to develop the population PK-PD model predicting the concentrations of clopidogrel, clopidogrel H4, and clopidogrel carboxylic acid, and linking clopidogrel H4 concentrations to changes in PRU levels. A two-compartment model effectively described the PKs of both clopidogrel and clopidogrel carboxylic acid, and a one-compartment model of those of clopidogrel H4. The CYP2C19 phenotype was identified as a significant covariate influencing the metabolic conversion of the parent drug to its metabolites. A PD submodel of clopidogrel H4 that stimulated the fractional turnover rate of PRU levels showed the best performance. Monte Carlo simulations suggested that PMs require three to four times higher doses than extensive metabolizers to reach the target PRU level. Individuals within the top 20th percentile of baseline PRU levels were shown to require 2.5-3 times higher doses than those in the bottom 20th percentile. We successfully developed a population PK-PD model for clopidogrel considering the impact of CYP2C19 phenotypes and baseline PRU levels. Further studies are necessary to confirm actual dosing recommendations for clopidogrel.
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Affiliation(s)
- Yun Seob Jung
- Department of Convergence MedicineYonsei University Wonju College of MedicineWonjuKorea
| | - Byung Hak Jin
- Department of Clinical PharmacologySeverance Hospital, Yonsei University Health SystemSeoulKorea
| | - Min Soo Park
- Department of Clinical PharmacologySeverance Hospital, Yonsei University Health SystemSeoulKorea
- Department of PediatricsYonsei University College of MedicineSeoulKorea
| | - Choon Ok Kim
- Department of Clinical PharmacologySeverance Hospital, Yonsei University Health SystemSeoulKorea
| | - Dongwoo Chae
- Department of PharmacologyYonsei University College of MedicineSeoulKorea
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Magavern EF, Jacobs B, Warren H, Finocchiaro G, Finer S, van Heel DA, Smedley D, Caulfield MJ. CYP2C19 Genotype Prevalence and Association With Recurrent Myocardial Infarction in British-South Asians Treated With Clopidogrel. JACC. ADVANCES 2023; 2:None. [PMID: 37808344 PMCID: PMC10550831 DOI: 10.1016/j.jacadv.2023.100573] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 07/04/2023] [Accepted: 07/17/2023] [Indexed: 10/10/2023]
Abstract
Background Cytochrome P450 family 2 subfamily C member 19 (CYP2C19) is a hepatic enzyme involved in the metabolism of clopidogrel from a prodrug to its active metabolite. Prior studies of genetic polymorphisms in CYP2C19 and their relationship with clinical efficacy have not included South Asian populations. Objectives The objective of this study was to assess prevalence of common CYP2C19 genotype polymorphisms in a British-South Asian population and correlate these with recurrent myocardial infarction risk in participants prescribed clopidogrel. Methods The Genes & Health cohort of British Bangladeshi and Pakistani ancestry participants were studied. CYP2C19 diplotypes were assessed using array data. Multivariable logistic regression was used to test for association between genetically inferred CYP2C19 metabolizer status and recurrent myocardial infarction, controlling for known cardiovascular disease risk factors, percutaneous coronary intervention, age, sex, and population stratification. Results Genes & Health cohort participants (N = 44,396) have a high prevalence (57%) of intermediate or poor CYP2C19 metabolizers, with at least 1 loss-of-function CYP2C19 allele. The prevalence of poor metabolizers carrying 2 CYP2C19 loss-of-function alleles is 13%, which is higher than that in previously studied European (2.4%) and Central/South Asian populations (8.2%). Sixty-nine percent of the cohort who were diagnosed with an acute myocardial infarction were prescribed clopidogrel. Poor metabolizers were significantly more likely to have a recurrent myocardial infarction (OR: 3.1; P = 0.019). Conclusions A pharmacogenomic-driven approach to clopidogrel prescribing has the potential to impact significantly on clinical management and outcomes in individuals of Bangladeshi and Pakistani ancestry.
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Affiliation(s)
- Emma F. Magavern
- William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Benjamin Jacobs
- The Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom
| | - Helen Warren
- William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Gherardo Finocchiaro
- Cardiovascular Sciences Research Centre, St George's, University of London, London, United Kingdom
| | - Sarah Finer
- The Blizard Institute, Queen Mary University of London, London, United Kingdom
| | - David A. van Heel
- The Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom
| | - Genes & Health Research Team
- William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
- The Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom
- Cardiovascular Sciences Research Centre, St George's, University of London, London, United Kingdom
- The Blizard Institute, Queen Mary University of London, London, United Kingdom
| | - Damian Smedley
- William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Mark J. Caulfield
- William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
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6
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Galli M, Angiolillo DJ. How is pharmacogenetics changing clinical trial design for percutaneous coronary intervention? Expert Rev Clin Pharmacol 2023; 16:383-385. [PMID: 37060346 DOI: 10.1080/17512433.2023.2203381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/12/2023] [Indexed: 04/16/2023]
Affiliation(s)
- Mattia Galli
- Maria Cecilia Hospital, GVM Care & Research, Cotignola, Italy
| | - Dominick J Angiolillo
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
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7
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Abstract
Antiplatelet therapy is used in the treatment of patients with acute coronary syndromes, stroke, and those undergoing percutaneous coronary intervention. Clopidogrel is the most widely used antiplatelet P2Y12 inhibitor in clinical practice. Genetic variation in CYP2C19 may influence its enzymatic activity, resulting in individuals who are carriers of loss-of-function CYP2C19 alleles and thus have reduced active clopidogrel metabolites, high on-treatment platelet reactivity, and increased ischemic risk. Prospective studies have examined the utility of CYP2C19 genetic testing to guide antiplatelet therapy, and more recently published meta-analyses suggest that pharmacogenetics represents a key treatment strategy to individualize antiplatelet therapy. Rapid genetic tests, including bedside genotyping platforms that are validated and have high reproducibility, are available to guide selection of P2Y12 inhibitors in clinical practice. The aim of this review is to provide an overview of the background and rationale for the role of a guided antiplatelet approach to enhance patient care.
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Affiliation(s)
- Matteo Castrichini
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA;
| | - Jasmine A Luzum
- Department of Clinical Pharmacy, University of Michigan College of Pharmacy, Ann Arbor, Michigan, USA
| | - Naveen Pereira
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA;
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8
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The efficacy of clopidogrel in preventing recurrent cardiovascular events among Arab population carrying different CYP2C19 mutations: systematic review and meta-analysis. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2022. [DOI: 10.1186/s43042-022-00313-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The prevalence and the role of CYP2C19 gene mutations concerning recurrent Cardiovascular Events (CVEs) among patients treated with clopidogrel is still controversial especially among Arab people. Therefore, this review aimed to determine the frequency of CYP2C19 polymorphic alleles among the Arab population and to investigate the efficacy of clopidogrel as an antiplatelet drug among those carrying different variants of this gene.
Methodology
Two authors independently searched in PubMed, Google Scholar, and EMBASE databases at any year for studies related to the role of CYP2C19 gene on the prognosis of patients with CVEs treated with clopidogrel. The review included Arab people who were genotyped to determine the frequency of CYP2C19 genotypes and alleles (the qualitative part). Concerning the quantitative part (meta-analysis), only patients who previously had CVEs and using clopidogrel as secondary prophylaxis had been included. The Newcastle Ottawa Scale for non-randomizes Studies was utilized to consider the risk of bias among included studies. We analyzed the data using odds ratio at 95% confidence interval and the quality of evidence of each outcome measure was judged using GRADE approach.
Results
The current study revealed that 4% of Arabs reported in the included studies are homozygous, and 25% are heterozygous for the CYP2C19*2 allele. While 3% and 18.5% of them are homozygous and heterozygous of CYP2C19*17 alleles, respectively. A significant increased risk of recurrent CVEs by about threefold was associated with CYP2C19*2 or CYP2C19*3 allele carriers (OR = 3.32, CI = 1.94–5.67, and OR = 3.53, CI = 1.17–10.63, respectively). However, no significant increased risk among carriers of CYP2C19*17 mutation (OR = 0.80, (CI = 0.44–1.44) was documented.
Conclusion
The present study revealed that Arabs carrying CYP2C19*2 and CYP2C19*3 alleles could be at increased risk of decreasing the antiplatelet efficacy of clopidogrel and an alternative drug should be prescribed for those patients to avoid recurrent CVEs. However, few available studies were included in the quantitative part of the analysis and further studies with large sample size are recommended to confirm our results.
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Kranendonk J, Willems LH, Vijver-Coppen RVD, Coenen M, Adang E, Donders R, Zeebregts CJ, Deneer V, Reijnen M, Kramers C, Warlé MC. CYP2C19 genotype-guided antithrombotic treatment versus conventional clopidogrel therapy in peripheral arterial disease: study design of a randomized controlled trial (GENPAD). Am Heart J 2022; 254:141-148. [PMID: 35988587 DOI: 10.1016/j.ahj.2022.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 07/04/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Clopidogrel is recommended in international guidelines to prevent arterial thrombotic events in patients with peripheral arterial disease (PAD). Clopidogrel itself is inactive and metabolism is dependent on the CYP2C19 enzyme. About 30% of Caucasian PAD patients receiving clopidogrel carry 1 or 2 CYP2C19 loss-of-function allele(s) and do not or to a limited extent convert the prodrug into its active metabolite. As a result, platelet inhibition may be inadequate which could lead to an increased risk of adverse clinical events related to arterial thrombosis. A CYP2C19 genotype-guided antithrombotic treatment might be beneficial for PAD patients. METHODS GENPAD is a multicenter randomized controlled trial involving 2,276 PAD patients with an indication for clopidogrel monotherapy. Patients with a separate indication for dual antiplatelet therapy or stronger antithrombotic therapy are not eligible for study participation. Patients randomized to the control group will receive clopidogrel 75 mg once daily without pharmacogenetic guidance. Patients randomized to the intervention group will be tested for carriage of CYP2C19 *2 and *3 loss-of-function alleles, followed by a genotype-guided antithrombotic treatment with either clopidogrel 75 mg once daily for normal metabolizers, clopidogrel 150 mg once daily for intermediate metabolizers, or acetylsalicylic acid 80 mg once daily plus rivaroxaban 2.5 mg twice daily for poor metabolizers. The primary outcome is a composite of myocardial infarction, ischemic stroke, cardiovascular death, acute or chronic limb ischemia, peripheral vascular interventions, or death. The secondary outcomes are the individual elements of the primary composite outcome and clinically relevant bleeding complications. CONCLUSION The aim of the GENPAD study is to evaluate the efficacy, safety, and cost-effectiveness of a genotype-guided antithrombotic treatment strategy compared to conventional clopidogrel treatment in PAD patients.
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Affiliation(s)
- J Kranendonk
- Department of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - L H Willems
- Department of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - M Coenen
- Department of Human Genetics, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, The Netherlands
| | - E Adang
- Department of Epidemiology and Biostatistics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - R Donders
- Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| | - C J Zeebregts
- Department of Surgery, Division of Vascular Surgery, University Medical Center Groningen, University Of Groningen, Groningen, The Netherlands
| | - Vhm Deneer
- Department of Clinical Pharmacy, Division of Laboratories, Pharmacy and Biomedical Genetics University Medical Center Utrecht, Utrecht, The Netherlands; Division of Pharmacoepidemiology and Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht university, Utrecht, The Netherlands
| | - Mmpj Reijnen
- Department of Surgery, Rijnstate Hospital, Arnhem, The Netherlands; Multimodality Medical Imaging Group, Faculty of Science and Technology, University of Twente, Enschede, The Netherlands
| | - C Kramers
- Department of Internal Medicine and Pharmacology-Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands; Department of Clinical Pharmacy, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - M C Warlé
- Department of Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
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Zhang L, Sun H, Liu Y, Lai X, Gong Y, Liu X, Li YG, He Y, Zhang EY, Yan X. Semi-mechanistic Population Pharmacokinetics Analysis Reveals Distinct CYP2C19 Dependency in the Bioactivation of Vicagrel and Clopidogrel to Active Metabolite M15-2. Eur J Pharm Sci 2022; 177:106264. [PMID: 35868434 DOI: 10.1016/j.ejps.2022.106264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 06/22/2022] [Accepted: 07/18/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Lin Zhang
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR
| | - Hongbin Sun
- State Key Laboratory of Natural Medicines and Center of Drug Discovery, College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | | | - Xiaojuan Lai
- Jiangsu Vcare PharmaTech Co., Ltd., Nanjing, China
| | - Yanchun Gong
- Jiangsu Vcare PharmaTech Co., Ltd., Nanjing, China
| | - Xuefang Liu
- Jiangsu Vcare PharmaTech Co., Ltd., Nanjing, China
| | - Yong-Guo Li
- Guangzhou Jiayue Pharmaceutical Technology Co., Ltd., Guangzhou, China
| | - Yang He
- EXDA, LLC, ROCKVILLE, MD, USA
| | | | - Xiaoyu Yan
- School of Pharmacy, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR.
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Rowland B, Batty JA, Dangas GD, Mehran R, Kunadian V. Oral Antiplatelet Agents in Percutaneous Coronary Intervention. Interv Cardiol 2022. [DOI: 10.1002/9781119697367.ch39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Duong JK, Nand RA, Patel A, Della Pasqua O, Gross AS. A physiologically based pharmacokinetic model of clopidogrel in populations of European and Japanese ancestry: An evaluation of CYP2C19 activity. Pharmacol Res Perspect 2022; 10:e00946. [PMID: 35307978 PMCID: PMC8934724 DOI: 10.1002/prp2.946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 01/17/2022] [Indexed: 11/21/2022] Open
Abstract
Treatment response to clopidogrel is associated with CYP2C19 activity through the formation of the active H4 metabolite. The aims of this study were to develop a physiologically based pharmacokinetic (PBPK) model of clopidogrel and its metabolites for populations of European ancestry, to predict the pharmacokinetics in the Japanese population by CYP2C19 phenotype, and to investigate the effect of clinical and demographic factors. A PBPK model was developed and verified to describe the two metabolic pathways of clopidogrel (H4 metabolite, acyl glucuronide metabolite) for a population of European ancestry using plasma data from published studies. Subsequently, model predictions in the Japanese population were evaluated. The effects of CYP2C19 activity, fluvoxamine coadministration (CYP2C19 inhibitor), and population‐specific factors (age, sex, BMI, body weight, cancer, hepatic, and renal dysfunction) on the pharmacokinetics of clopidogrel and its metabolites were then characterized. The predicted/observed ratios for clopidogrel and metabolite exposure parameters were acceptable (twofold acceptance criteria). For all CYP2C19 phenotypes, steady‐state AUC0‐τ of the H4 metabolite was lower for the Japanese (e.g., EM, 7.69 [6.26–9.45] ng·h/ml; geometric mean [95% CI]) than European (EM, 24.8 [20.4–30.1] ng·h/ml, p < .001) population. In addition to CYP2C19‐poor metabolizer phenotype, fluvoxamine coadministration, hepatic, and renal dysfunction were found to reduce H4 metabolite but not acyl glucuronide metabolite concentrations. This is the first PBPK model describing the two major metabolic pathways of clopidogrel, which can be applied to populations of European and Japanese ancestry by CYP2C19 phenotype. The differences between the two populations appear to be determined primarily by the effect of varying CYP2C19 liver activity.
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Affiliation(s)
- Janna K Duong
- Clinical Pharmacology Modelling and Simulation, GlaxoSmithKline R&D, Ermington, Australia
| | - Romina A Nand
- Clinical Pharmacology Modelling and Simulation, GlaxoSmithKline R&D, Ermington, Australia
| | - Aarti Patel
- Drug Metabolism and Pharmacokinetics, GlaxoSmithKline R&D, Stevenage, UK
| | - Oscar Della Pasqua
- Clinical Pharmacology Modelling and Simulation, GlaxoSmithKline R&D, Brentford, UK
| | - Annette S Gross
- Clinical Pharmacology Modelling and Simulation, GlaxoSmithKline R&D, Ermington, Australia
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Alkattan A, Alsalameen E. Polymorphisms of genes related to phase-I metabolic enzymes affecting the clinical efficacy and safety of clopidogrel treatment. Expert Opin Drug Metab Toxicol 2021; 17:685-695. [PMID: 33931001 DOI: 10.1080/17425255.2021.1925249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Introduction: Clopidogrel is an antiplatelet medication described as a prodrug, which cannot exert the antiplatelet effect until being biotransformed to the active metabolite. It is commonly used to reduce the risk of blood coagulation in patients diagnosed with acute coronary syndrome, or ischemic stroke.Area covered: We reviewed published articles in PubMed and Google Scholar that focused on the mutations of CYP2C19, CYP3A4, CYP2C9, CYP2B6, and CYP1A2 genes related to clopidogrel clinical efficacy and safety.Expert opinion: Based on current pharmacogenetic studies, patients carrying CYP2C19*2, CYP2C19*3, CYP2C9*3, and CYP2B6*5 alleles may not respond to clopidogrel due to poor platelet inhibition efficacy revealed among them. In contrast, carriers of CYP2C19*17, CYP3A4*1G, and CYP1A2*1C alleles showed a more significant antiplatelet effect in clopidogrel users and expected to have a protective role as a genetic factor against cardiovascular events. Genotyping for either CYP2C19, CYP3A4, CYP2C9, CYP2B6, or CYP1A2 variants is not recommended when considering clopidogrel treatment for patients, as some trials showed specific non-genetic factors (e.g. age and diabetes) that could affect clopidogrel responsiveness. Instead, platelets inhibition tests could be used as predictors of the clinical efficacy of clopidogrel treatment. Other P2Y12 receptor inhibitors should be considered as alternative medications.
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Affiliation(s)
- Abdullah Alkattan
- Department of Research and Development, General Directorate of Medical Consultations, Assisting Deputyship for Primary Health Care, Ministry of Health, Riyadh, Saudi Arabia.,Department of Biomedical Sciences, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
| | - Eman Alsalameen
- Department of Pharmacy, King Khaled University Hospital, Medical City King Saud University, Riyadh, Saudi Arabia
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14
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Xu RJ, Kong WM, An XF, Zou JJ, Liu L, Liu XD. Physiologically-Based Pharmacokinetic-Pharmacodynamics Model Characterizing CYP2C19 Polymorphisms to Predict Clopidogrel Pharmacokinetics and Its Anti-Platelet Aggregation Effect Following Oral Administration to Coronary Artery Disease Patients With or Without Diabetes. Front Pharmacol 2021; 11:593982. [PMID: 33519456 PMCID: PMC7845657 DOI: 10.3389/fphar.2020.593982] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 11/18/2020] [Indexed: 11/20/2022] Open
Abstract
Background and Objective: Clopidogrel (CLOP) is commonly used in coronary artery disease (CAD) patients with or without diabetes (DM), but these patients often suffer CLOP resistance, especially those with diabetes. This study was aimed to develop a physiologically-based pharmacokinetic-pharmacodynamic (PBPK-PD) model to describe the pharmacokinetics and pharmacodynamics of clopidogrel active metabolite (CLOP-AM) in CAD patients with or without DM. Methods: The PBPK-PD model was first established and validated in healthy subjects and then in CAD patients with or without DM. The influences of CYP2C19, CYP2C9, CYP3A4, carboxylesterase 1 (CES1), gastrointestinal transit rates (Kt,i) and platelets response to CLOP-AM (kirre) on predicted pharmacokinetics and pharmacodynamics were investigated, followed with their individual and integrated effects on CLOP-AM pharmacokinetics due to changes in DM status. Results: Most predictions fell within 0.5–2.0 folds of observations, indicating successful predictions. Sensitivity analysis showed that contributions of interested factors to pharmacodynamics were CES1> kirre> Kt,i> CYP2C19 > CYP3A4> CYP2C9. Mimicked analysis showed that the decreased exposure of CLOP-AM by DM was mainly attributed to increased CES1 activity, followed by decreased CYP2C19 activity. Conclusion: The pharmacokinetics and pharmacodynamics of CLOP-AM were successfully predicted using the developed PBPK-PD model. Clopidogrel resistance by DM was the integrated effects of altered Kt,i, CYP2C19, CYP3A4, CES1 and kirre.
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Affiliation(s)
- Ru-Jun Xu
- Center of Pharmacokinetics and Metabolism, College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Wei-Min Kong
- Center of Pharmacokinetics and Metabolism, College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Xiao-Fei An
- Department of Endocrinology, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of Chinse Medicine, Nanjing, China
| | - Jian-Jun Zou
- Department of Clinical Pharmacology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.,School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Li Liu
- Center of Pharmacokinetics and Metabolism, College of Pharmacy, China Pharmaceutical University, Nanjing, China
| | - Xiao-Dong Liu
- Center of Pharmacokinetics and Metabolism, College of Pharmacy, China Pharmaceutical University, Nanjing, China
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15
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Liu S, Wang Z, Tian X, Cai W. Predicting the Effects of CYP2C19 and Carboxylesterases on Vicagrel, a Novel P2Y12 Antagonist, by Physiologically Based Pharmacokinetic/Pharmacodynamic Modeling Approach. Front Pharmacol 2021; 11:591854. [PMID: 33424602 PMCID: PMC7793822 DOI: 10.3389/fphar.2020.591854] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/22/2020] [Indexed: 11/13/2022] Open
Abstract
Vicagrel, a novel acetate derivative of clopidogrel, exhibits a favorable safety profile and excellent antiplatelet activity. Studies aim at identifying genetic and non-genetic factors affecting vicagrel metabolic enzymes Cytochrome P450 2C19 (CYP2C19), Carboxylesterase (CES) 1 and 2 (CES1 and CES2), which may potentially lead to altered pharmacokinetics and pharmacodynamics, are warranted. A physiologically based pharmacokinetic/pharmacodynamic (PBPK/PD) model incorporating vicagrel and its metabolites was constructed, verified and validated in our study, which could simultaneously characterize its sequential two step metabolism and clinical response. Simulations were then performed to evaluate the effects of CYP2C19, CES1 and CES2 genetic polymorphisms as well as inhibitors of these enzymes on vicagrel pharmacokinetics and antiplatelet effects. Results suggested vicagrel was less influenced by CYP2C19 metabolic phenotypes and CES1 428 G > A variation, in comparison to clopidogrel. No pharmacokinetic difference in the active metabolite was also noted for volunteers carrying different CES2 genotypes. Omeprazole, a CYP2C19 inhibitor, and simvastatin, a CES1 and CES2 inhibitor, showed weak impact on the pharmacokinetics and pharmacodynamics of vicagrel. This is the first study proposing a dynamic PBPK/PD model of vicagrel able to capture its pharmacokinetic and pharmacodynamic profiles simultaneously. Simulations indicated that genetic polymorphisms and drug-drug interactions showed no clinical relevance for vicagrel, suggesting its potential advantages over clopidogrel for treatment of cardiovascular diseases. Our model can be utilized to support further clinical trial design aiming at exploring the effects of genetic polymorphisms and drug-drug interactions on PK and PD of this novel antiplatelet agent.
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Affiliation(s)
- Shuaibing Liu
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ziteng Wang
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University, Shanghai, China
| | - Xin Tian
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Weimin Cai
- Department of Clinical Pharmacy, School of Pharmacy, Fudan University, Shanghai, China
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16
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Franchi F, Rollini F, Rivas J, Rivas A, Agarwal M, Briceno M, Wali M, Nawaz A, Silva G, Shaikh Z, Maailiki N, Been L, Pineda AM, Suryadevara S, Soffer D, Zenni MM, Bass TA, Angiolillo DJ. Prasugrel Versus Ticagrelor in Patients With CYP2C19 Loss-of-Function Genotypes: Results of a Randomized Pharmacodynamic Study in a Feasibility Investigation of Rapid Genetic Testing. JACC Basic Transl Sci 2020; 5:419-428. [PMID: 32478205 PMCID: PMC7251226 DOI: 10.1016/j.jacbts.2020.02.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 02/08/2020] [Indexed: 12/22/2022]
Abstract
The feasibility of rapid genetic testing in patients undergoing percutaneous coronary intervention (PCI) and the comparison of the pharmacodynamic effects of prasugrel versus ticagrelor among carriers of cytochrome P450 2C19 loss-of-function alleles treated with PCI has been poorly explored. Rapid genetic testing using the Spartan assay was shown to be feasible and provides results in a timely fashion in a real-world setting of patients undergoing coronary angiography (n = 781). Among patients (n = 223, 28.5%), carriers of at least 1 loss-of-function allele treated with PCI (n = 65), prasugrel, and ticagrelor achieve similar levels of platelet inhibition. (A Pharmacodynamic Study Comparing Prasugrel Versus Ticagrelor in Patients Undergoing PCI With CYP2C19 Loss-of-function [NCT02065479]).
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Affiliation(s)
- Francesco Franchi
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Fabiana Rollini
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Jose Rivas
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Andrea Rivas
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Malhar Agarwal
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Maryuri Briceno
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Mustafa Wali
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Ahmed Nawaz
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Gabriel Silva
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Zubair Shaikh
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Naji Maailiki
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Latonya Been
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Andres M. Pineda
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Siva Suryadevara
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Daniel Soffer
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Martin M. Zenni
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
| | - Theodore A. Bass
- University of Florida College of Medicine-Jacksonville, Jacksonville, Florida
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Abstract
Antiplatelet therapies are an essential tool to reduce the risk of developing clinically apparent atherothrombotic disease and are a mainstay in the therapy of patients who have established cardiovascular, cerebrovascular, and peripheral artery disease. Strategies to intensify antiplatelet regimens are limited by concomitant increases in clinically significant bleeding. The development of novel antiplatelet therapies targeting additional receptor and signaling pathways, with a focus on maintaining antiplatelet efficacy while preserving hemostasis, holds tremendous potential to improve outcomes among patients with atherothrombotic diseases.
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Affiliation(s)
- Arjun Majithia
- From the Brigham and Women's Hospital Heart and Vascular Center and Harvard Medical School, Boston, MA
| | - Deepak L Bhatt
- From the Brigham and Women's Hospital Heart and Vascular Center and Harvard Medical School, Boston, MA
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19
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ACC/AHA Versus ESC Guidelines on Dual Antiplatelet Therapy. J Am Coll Cardiol 2018; 72:2915-2931. [DOI: 10.1016/j.jacc.2018.09.057] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 09/05/2018] [Accepted: 09/08/2018] [Indexed: 01/25/2023]
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20
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Pharmacogenetic and clinical predictors of response to clopidogrel plus aspirin after acute coronary syndrome in Egyptians. Pharmacogenet Genomics 2018; 28:207-213. [PMID: 30188374 PMCID: PMC9903350 DOI: 10.1097/fpc.0000000000000349] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVES Dual antiplatelet therapy (DAPT) with aspirin and clopidogrel reduces the risk for recurrent cardiovascular events after acute coronary syndrome (ACS). However, there is significant variation in response to DAPT that may be influenced by both genetic and nongenetic factors. This study aimed to assess the effect of genetic polymorphisms in PON-1, PEAR-1, P2Y12, CES1, and CYP2C19, along with clinical, demographic, and social factors, on variation in response to DAPT in Egyptians. PARTICIPANTS AND METHODS This study included 230 Egyptians treated with clopidogrel 75 mg/day and aspirin 81 mg/day for at least 12 months following their first ACS. Simple and multivariable logistic regression analyses were carried out to identify factors associated with major adverse cardiovascular events (MACE), defined as the occurrence of recurrent ACS, ischemic stroke, stent-related revascularization, or death, in clopidogrel-treated participants. RESULTS Using multivariable logistic regression analysis, the CYP2C19*2 polymorphism was the only genetic predictor of MACE [odds ratio (OR): 2.23, 95% confidence interval (CI): 1.15-4.33, P=0.01]. In addition, proton pump inhibitor use (OR: 4.77, 95% CI: 1.47-15.54, P=0.009) and diabetes (OR: 1.83, 95% CI: 1.03-3.26, P=0.03) were associated with higher cardiovascular risk, whereas statin use was associated with lower risk (OR: 0.43, 95% CI: 0.25-0.76, P=0.003). The contribution of these four genetic and nongenetic factors explained 19% of the variability in risk for MACE in Egyptians treated with DAPT. CONCLUSION These results highlight that CYP2C19*2, along with diabetes, and use of proton pump inhibitor and statin are important factors jointly associated with variability in clinical response to DAPT following ACS in Egyptians.
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Wang Z, Liu Z, Wang W, Fu Y, Chen W, Li W, Zhang X, Tang Y, Zhou Z. Two common mutations within CYP2C19 affected platelet aggregation in Chinese patients undergoing PCI: a one-year follow-up study. THE PHARMACOGENOMICS JOURNAL 2018; 19:157-163. [PMID: 30061570 DOI: 10.1038/s41397-018-0036-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 04/23/2018] [Accepted: 06/19/2018] [Indexed: 11/09/2022]
Abstract
The effect of dual antiplatelet therapy, clopidogrel combined with aspirin, was influenced by CYP2C19 gene mutation and heterogeneity of population. Related studies remained controversial and limited, especially in Chinese. Total 3295 unrelated ACS Chinese patients undergoing percutaneous coronary intervention (PCI) were recruited and followed up to 1 year. Meanwhile, baseline and clinical data were retrieved. CYP2C19*2 and *3 were genotyped by sequencing. Associations of variants and metabolic types with platelet reactivity (PR) were analyzed by a logistic regression model. And, a Cox proportional hazards model was utilized to analyze survival data. Confounders included gender, age, smoking status, dosage of aspirin and clopidogrel, and BMI. It was found that patients with allele A in CYP2C19*2 and *3 were susceptibility to high PR (OR, 95%CI and P values were 1.34, 1.20-1.50, <0.0001 and 1.42, 1.13-1.79, 0.0029, respectively) after taking clopidogrel. The PR increased along with the number of loss of function (LOF) allele increased and did in order of haplotype*1, *2, and *3. This research suggested that LOF alleles and risk haplotypes in CYP2C19 could significantly attenuate the response to clopidogrel, which resulted in platelet aggregation.
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Affiliation(s)
- Zhifu Wang
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Zhaohui Liu
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Wenyao Wang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Yuanyuan Fu
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Wen Chen
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Wenke Li
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Xue Zhang
- Information Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China
| | - Yida Tang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China.
| | - Zhou Zhou
- State Key Laboratory of Cardiovascular Disease, Beijing Key Laboratory for Molecular Diagnostics of Cardiovascular Diseases, Diagnostic Laboratory Service, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, 100037, Beijing, People's Republic of China.
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Clopidogrel Pharmacokinetics in Malaysian Population Groups: The Impact of Inter-Ethnic Variability. Pharmaceuticals (Basel) 2018; 11:ph11030074. [PMID: 30049953 PMCID: PMC6161187 DOI: 10.3390/ph11030074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/06/2018] [Accepted: 07/08/2018] [Indexed: 12/13/2022] Open
Abstract
Malaysia is a multi-ethnic society whereby the impact of pharmacogenetic differences between ethnic groups may contribute significantly to variability in clinical therapy. One of the leading causes of mortality in Malaysia is cardiovascular disease (CVD), which accounts for up to 26% of all hospital deaths annually. Clopidogrel is used as an adjunct treatment in the secondary prevention of cardiovascular events. CYP2C19 plays an integral part in the metabolism of clopidogrel to the active metabolite clopi-H4. However, CYP2C19 genetic polymorphism, prominent in Malaysians, could influence target clopi-H4 plasma concentrations for clinical efficacy. This study addresses how inter-ethnicity variability within the Malaysian population impacts the attainment of clopi-H4 target plasma concentration under different CYP2C19 polymorphisms through pharmacokinetic (PK) modelling. We illustrated a statistically significant difference (P < 0.001) in the clopi-H4 Cmax between the extensive metabolisers (EM) and poor metabolisers (PM) phenotypes with either Malay or Malaysian Chinese population groups. Furthermore, the number of PM individuals with peak clopi-H4 concentrations below the minimum therapeutic level was partially recovered using a high-dose strategy (600 mg loading dose followed by a 150 mg maintenance dose), which resulted in an approximate 50% increase in subjects attaining the minimum clopi-H4 plasma concentration for a therapeutic effect.
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Moon JY, Franchi F, Rollini F, Rios JRR, Kureti M, Cavallari LH, Angiolillo DJ. Role of genetic testing in patients undergoing percutaneous coronary intervention. Expert Rev Clin Pharmacol 2018; 11:151-164. [PMID: 28689434 PMCID: PMC5771818 DOI: 10.1080/17512433.2017.1353909] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Variability in individual response profiles to antiplatelet therapy, in particular clopidogrel, is a well-established phenomenon. Genetic variations of the cytochrome P450 (CYP) 2C19 enzyme, a key determinant in clopidogrel metabolism, have been associated with clopidogrel response profiles. Moreover, the presence of a CYP2C19 loss-of-function allele is associated with an increased risk of atherothrombotic events among clopidogrel-treated patients undergoing percutaneous coronary interventions (PCI), prompting studies evaluating the use of genetic tests to identify patients who may be potential candidates for alternative platelet P2Y12 receptor inhibiting therapies (prasugrel or ticagrelor). Areas covered: The present manuscript provides an overview of genetic factors associated with response profiles to platelet P2Y12 receptor inhibitors and their clinical implications, as well as the most recent developments and future considerations on the role of genetic testing in patients undergoing PCI. Expert commentary: The availability of more user-friendly genetic tests has contributed towards the development of many ongoing clinical trials and personalized medicine programs for patients undergoing PCI. Results of pilot investigations have shown promising results, which however need to be confirmed in larger-scale studies to support the routine use of genetic testing as a strategy to personalize antiplatelet therapy and improve clinical outcomes.
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Affiliation(s)
- Jae Youn Moon
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
| | - Francesco Franchi
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
| | - Fabiana Rollini
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
| | - Jose R. Rivas Rios
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
| | - Megha Kureti
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
| | - Larisa H. Cavallari
- Department of Pharmacotherapy and Translational Research, College of Pharmacy, University of Florida, Gainesville, FL, USA
- Center for Pharmacogenomics, University of Florida, Gainesville, FL, USA
- Clinical & Translational Science Institute, University of Florida, Gainesville, FL, USA
| | - Dominick J. Angiolillo
- Division of Cardiology, University of Florida College of Medicine, Jacksonville, FL, USA
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Pharmacogenomic Impact of CYP2C19 Variation on Clopidogrel Therapy in Precision Cardiovascular Medicine. J Pers Med 2018; 8:jpm8010008. [PMID: 29385765 PMCID: PMC5872082 DOI: 10.3390/jpm8010008] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/20/2018] [Accepted: 01/22/2018] [Indexed: 12/21/2022] Open
Abstract
Variability in response to antiplatelet therapy can be explained in part by pharmacogenomics, particularly of the CYP450 enzyme encoded by CYP2C19. Loss-of-function and gain-of-function variants help explain these interindividual differences. Individuals may carry multiple variants, with linkage disequilibrium noted among some alleles. In the current pharmacogenomics era, genomic variation in CYP2C19 has led to the definition of pharmacokinetic phenotypes for response to antiplatelet therapy, in particular, clopidogrel. Individuals may be classified as poor, intermediate, extensive, or ultrarapid metabolizers, based on whether they carry wild type or polymorphic CYP2C19 alleles. Variant alleles differentially impact platelet reactivity, concentration of plasma clopidogrel metabolites, and clinical outcomes. Interestingly, response to clopidogrel appears to be modulated by additional factors, such as sociodemographic characteristics, risk factors for ischemic heart disease, and drug-drug interactions. Furthermore, systems medicine studies suggest that a broader approach may be required to adequately assess, predict, preempt, and manage variation in antiplatelet response. Transcriptomics, epigenomics, exposomics, miRNAomics, proteomics, metabolomics, microbiomics, and mathematical, computational, and molecular modeling should be integrated with pharmacogenomics for enhanced prediction and individualized care. In this review of pharmacogenomic variation of CYP450, a systems medicine approach is described for tailoring antiplatelet therapy in clinical practice of precision cardiovascular medicine.
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Hassani Idrissi H, Hmimech W, Khorb NE, Akoudad H, Habbal R, Nadifi S. A synergic effect between CYP2C19*2, CYP2C19*3 loss-of-function and CYP2C19*17 gain-of-function alleles is associated with Clopidogrel resistance among Moroccan Acute Coronary Syndromes patients. BMC Res Notes 2018; 11:46. [PMID: 29347970 PMCID: PMC5774088 DOI: 10.1186/s13104-018-3132-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 01/06/2018] [Indexed: 11/10/2022] Open
Abstract
Objective The main objective of our study was to investigate the association of CYP2C19*2 and CYP2C19*3 loss-of-function and CYP2C19*17 gain-of-function variants of CYP2C19 gene with Clopidogrel resistance in a sample of Moroccan Acute Coronary Syndromes patients. Results Our results showed the existence of a synergic effect between the three alleles, statistically very significant, on Clopidogrel resistance among the treated patients (P = 0.0033). For the three variants of the CYP2C19 gene, the heterozygous and homozygous mutant genotypes were the most frequent among ACS patients (CYP2C19*2: 82.76% GA and 10.35% AA; CYP2C19*3: 76.67% GA and 18.33% AA; CYP2C19*17: 66.67% CT and 18.66% TT). Allelic frequencies were 51.73% vs 48.27% (P < 0.001); 56.67% vs 43.33% (P < 0.001); and 52% vs 48% (P = 0.01) for the mutant and wild type alleles of the CYP2C19*2, CYP2C19*3 and CYP2C19*17 variants respectively. Our results support a role of CYP2C19 gene variants as a potential marker of Clopidogrel response. Understanding the functional and clinical consequences of these variants may help for treating patients more effectively, they could be genetically screened and appropriate dose adjustments could be made on the basis of their CYP2C19 genotype. Electronic supplementary material The online version of this article (10.1186/s13104-018-3132-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hind Hassani Idrissi
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco.
| | - Wiam Hmimech
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco
| | - Nada El Khorb
- Department of Cardiology, University Hospital Center Hassan II, Fes, Morocco
| | - Hafid Akoudad
- Department of Cardiology, University Hospital Center Hassan II, Fes, Morocco
| | - Rachida Habbal
- Department of Cardiology, University Hospital Center Ibn Rochd, Casablanca, Morocco
| | - Sellama Nadifi
- Laboratory of Genetics and Molecular Pathology, Medical School, University Hassan II, Casablanca, Morocco
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How I use laboratory monitoring of antiplatelet therapy. Blood 2017; 130:713-721. [DOI: 10.1182/blood-2017-03-742338] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 05/24/2017] [Indexed: 12/11/2022] Open
Abstract
Abstract
Antiplatelet therapy is of proven benefit in coronary artery disease and a number of other clinical settings. This article reviews platelet function, molecular targets of antiplatelet agents, and clinical indications for antiplatelet therapy before focusing on a frequent question to hematologists about the 2 most commonly used antiplatelet therapies: Could the patient be aspirin “resistant” or clopidogrel “resistant”? If so, should results of a platelet function test be used to guide the dose or type of antiplatelet therapy? Whether such guided therapy is of clinical benefit to patients has been a source of controversy. The present article reviews this subject in the context of 2 prototypical clinical cases. Available evidence does not support the use of laboratory tests to guide the dose of aspirin or clopidogrel in patients with so-called aspirin or clopidogrel “resistance.”
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Nie XY, Li JL, Zhang Y, Xu Y, Yang XL, Fu Y, Liang GK, Lu Y, Liu J, Shi LW. Haplotype of platelet receptor P2RY12 gene is associated with residual clopidogrel on-treatment platelet reactivity. J Zhejiang Univ Sci B 2017; 18:37-47. [PMID: 28070995 DOI: 10.1631/jzus.b1600333] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To investigate a possible association between common variations of the P2RY12 and the residual clopidogrel on-treatment platelet reactivity after adjusting for the influence of CYP2C19 tested by thromboelastography (TEG). METHODS One hundred and eighty patients with acute coronary syndrome (ACS) treated with clopidogrel and aspirin were included and platelet function was assessed by TEG. Five selected P2RY12 single nucleotide polymorphisms (SNPs; rs6798347, rs6787801, rs6801273, rs6785930, and rs2046934), which cover the common variations in the P2RY12 gene and its regulatory regions, and three CYP2C19 SNPs (*2,*3,*17) were genotyped and possible haplotypes were analyzed. RESULTS The high on-treatment platelet reactivity (HTPR) prevalence defined by a platelet inhibition rate <30% by TEG in adenosine diphosphate (ADP)-channel was 69 (38.33%). Six common haplotypes were inferred from four of the selected P2RY12 SNPs (denoted H0 to H5) according to the linkage disequilibrium R square (except for rs2046934). Haplotype H1 showed a significantly lower incidence of HTPR than the reference haplotype (H0) in the total study population while haplotypes H1 and H2 showed significantly lower incidences of HTPR than H0 in the nonsmoker subgroup after adjusting for CYP2C19 effects and demographic characteristics. rs2046934 (T744C) did not show any significant association with HTPR. CONCLUSIONS The combination of common P2RY12 variations including regulatory regions rather than rs2046934 (T744C) that related to pharmacodynamics of clopidogrel in patients with ACS was independently associated with residual on-clopidogrel platelet reactivity. This is apart from the established association of the CYP2C19. This association seemed more important in the subgroup defined by smoking.
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Affiliation(s)
- Xiao-Yan Nie
- School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Jun-Lei Li
- School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yong Zhang
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - Yang Xu
- School of Public Health, Peking University Health Science Center, Beijing 100191, China
| | - Xue-Li Yang
- Department of Epidemiology, Fuwai Hospital, Beijing 100037, China
| | - Yu Fu
- School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Guang-Kai Liang
- School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
| | - Yun Lu
- Department of Pharmacy, Hennepin County Medical Center, Minneapolis, Minnesota 55415, USA
| | - Jian Liu
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - Lu-Wen Shi
- School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
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28
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Friede K, Li J, Voora D. Use of Pharmacogenetic Information in the Treatment of Cardiovascular Disease. Clin Chem 2017; 63:177-185. [DOI: 10.1373/clinchem.2016.255232] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 10/31/2016] [Indexed: 01/26/2023]
Abstract
Abstract
BACKGROUND
In 1964, Robert A. O'Reilly's research group identified members of a family who required remarkably high warfarin doses (up to 145 mg/day, 20 times the average dose) to achieve appropriate anticoagulation. Since this time, pharmacogenetics has become a mainstay of cardiovascular science, and genetic variants have been implicated in several fundamental classes of medications used in cardiovascular medicine.
CONTENT
In this review, we discuss genetic variants that affect drug response to 3 classes of cardiovascular drugs: statins, platelet P2Y12 inhibitors, and anticoagulants. These genetic variations have pharmacodynamic and pharmacokinetic effects and have been shown to explain differences in drug response such as lipid lowering, prevention of cardiovascular disease, and prevention of stroke, as well as incidence of adverse events such as musculoskeletal side effects and bleeding. Several groups have begun to implement pharmacogenetics testing as part of routine clinical care with the goal of improving health outcomes. Such strategies identify both patients at increased risk of adverse outcomes and alternative strategies to mitigate this risk as well as patients with “normal” genotypes, who, armed with this information, may have increased confidence and adherence to prescribed medications. While much is known about the genetic variants that underlie these effects, translation of this knowledge into clinical practice has been hampered by difficulty in implementing cost-effective, point-of-care tools to improve physician decision-making as well as a lack of data, as of yet, demonstrating the efficacy of using genetic information to improve health.
SUMMARY
Many genetic variants that affect individual responses to drugs used in cardiovascular disease prevention and treatment have been described. Further study of these variants is needed before successful implementation into clinical practice.
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Affiliation(s)
| | - Josephine Li
- Duke Center for Applied Genomics & Precision Medicine, Duke University, Durham, NC
| | - Deepak Voora
- Department of Medicine and and
- Duke Center for Applied Genomics & Precision Medicine, Duke University, Durham, NC
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29
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Batty JA, Dunford JR, Dangas GD, Kunadian V. Oral Antiplatelet Agents in PCI. Interv Cardiol 2016. [DOI: 10.1002/9781118983652.ch40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Jonathan A. Batty
- Institute of Cellular Medicine; Newcastle University; Newcastle upon Tyne UK
- The Royal Victoria Infirmary; Newcastle upon Tyne NHS Foundation Trust; Newcastle upon Tyne UK
| | - Joseph R. Dunford
- Institute of Cellular Medicine; Newcastle University; Newcastle upon Tyne UK
| | - George D. Dangas
- Department of Cardiology; Mount Sinai Medical Center; New York NY USA
| | - Vijay Kunadian
- Institute of Cellular Medicine; Newcastle University; Newcastle upon Tyne UK
- Freeman Hospital; Newcastle upon Tyne Hospital NHS Foundation Trust; Newcastle upon Tyne UK
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30
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Saab YB, Zeenny R, Ramadan WH. Optimizing clopidogrel dose response: a new clinical algorithm comprising CYP2C19 pharmacogenetics and drug interactions. Ther Clin Risk Manag 2015; 11:1421-7. [PMID: 26445541 PMCID: PMC4590670 DOI: 10.2147/tcrm.s83293] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
PURPOSE Response to clopidogrel varies widely with nonresponse rates ranging from 4% to 30%. A reduced function of the gene variant of the CYP2C19 has been associated with lower drug metabolite levels, and hence diminished platelet inhibition. Drugs that alter CYP2C19 activity may also mimic genetic variants. The aim of the study is to investigate the cumulative effect of CYP2C19 gene polymorphisms and drug interactions that affects clopidogrel dosing, and apply it into a new clinical-pharmacogenetic algorithm that can be used by clinicians in optimizing clopidogrel-based treatment. METHOD Clopidogrel dose optimization was analyzed based on two main parameters that affect clopidogrel metabolite area under the curve: different CYP2C19 genotypes and concomitant drug intake. Clopidogrel adjusted dose was computed based on area under the curve ratios for different CYP2C19 genotypes when a drug interacting with CYP2C19 is added to clopidogrel treatment. A clinical-pharmacogenetic algorithm was developed based on whether clopidogrel shows 1) expected effect as per indication, 2) little or no effect, or 3) clinical features that patients experience and fit with clopidogrel adverse drug reactions. RESULTS The study results show that all patients under clopidogrel treatment, whose genotypes are different from *1*1, and concomitantly taking other drugs metabolized by CYP2C19 require clopidogrel dose adjustment. To get a therapeutic effect and avoid adverse drug reactions, therapeutic dose of 75 mg clopidogrel, for example, should be lowered to 6 mg or increased to 215 mg in patients with different genotypes. CONCLUSION The implementation of clopidogrel new algorithm has the potential to maximize the benefit of clopidogrel pharmacological therapy. Clinicians would be able to personalize treatment to enhance efficacy and limit toxicity.
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Affiliation(s)
- Yolande B Saab
- School of Pharmacy, Pharmaceutical Sciences Department, Lebanese American University, Byblos, Lebanon
| | - Rony Zeenny
- School of Pharmacy, Pharmacy Practice Department, Lebanese American University, Byblos, Lebanon
| | - Wijdan H Ramadan
- School of Pharmacy, Pharmacy Practice Department, Lebanese American University, Byblos, Lebanon
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31
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Tatarunas V, Jankauskiene L, Kupstyte N, Skipskis V, Gustiene O, Grybauskas P, Lesauskaite V. The role of clinical parameters and of CYP2C19 G681 and CYP4F2 G1347A polymorphisms on platelet reactivity during dual antiplatelet therapy. Blood Coagul Fibrinolysis 2015; 25:369-74. [PMID: 24418943 DOI: 10.1097/mbc.0000000000000053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Dual antiplatelet therapy with aspirin and clopidogrel is used to lower the risk of arterial thrombosis. However, this strategy is not always successful owing to high interindividual variability in response to antiplatelet therapy. To evaluate an impact of CYP2C19 G681A and CYP4F2 G1347A polymorphisms and clinical factors on dual antiplatelet effect of clopidogrel and aspirin. Totally 89 patients who continued dual aspirin and clopidogrel antiplatelet therapy for at least of 14 days were included into the further study. Test for platelet aggregation was performed according to the classical Born method. Genotyping of CYP2C19*2 and CYP2C19*3 and CYP4F2*3 was done by using commercial probes from Applied Biosystems (UK). Patient age, weight and body weight index did not correlate significantly with platelet aggregation level both induced by ADP and epinephrine (P > 0.05). Serum concentration of creatinine, diabetes, angiotensin II receptor blockers, B-blockers, statin or omeprazole use had no significant effect on platelet aggregation. The users of angiotensin-converting enzyme inhibitors had lower platelet aggregation levels with epinephrine vs. nonusers: 28.80 ± 13.25 vs. 51.15 ± 23.50, P < 0.03, respectively. Platelet aggregation with ADP was higher in CYP2C19*1*2 genotype carriers than in CYP2C19*1*1 carriers (P = 0.01). Platelet aggregation with epinephrine was higher in CYP4F2 GA genotype carriers than in GG (P = 0.04) or AA (P = 0.01) carriers. Our study confirms that CYP2C19 G681A genotype has an impact on antiplatelet effect of clopidogrel. The novelty is that the platelet aggregation after induction with epinephrine is influenced by CYP4F2 G1347A genotype.
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Affiliation(s)
- Vacis Tatarunas
- aInstitute of Cardiology bDepartment of Internal Diseases cDepartment of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania
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32
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Jiang XL, Samant S, Lesko LJ, Schmidt S. Clinical pharmacokinetics and pharmacodynamics of clopidogrel. Clin Pharmacokinet 2015; 54:147-66. [PMID: 25559342 DOI: 10.1007/s40262-014-0230-6] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Acute coronary syndromes (ACS) remain life-threatening disorders, which are associated with high morbidity and mortality. Dual antiplatelet therapy with aspirin and clopidogrel has been shown to reduce cardiovascular events in patients with ACS. However, there is substantial inter-individual variability in the response to clopidogrel treatment, in addition to prolonged recovery of platelet reactivity as a result of irreversible binding to P2Y12 receptors. This high inter-individual variability in treatment response has primarily been associated with genetic polymorphisms in the genes encoding for cytochrome (CYP) 2C19, which affect the pharmacokinetics of clopidogrel. While the US Food and Drug Administration has issued a boxed warning for CYP2C19 poor metabolizers because of potentially reduced efficacy in these patients, results from multivariate analyses suggest that additional factors, including age, sex, obesity, concurrent diseases and drug-drug interactions, may all contribute to the overall between-subject variability in treatment response. However, the extent to which each of these factors contributes to the overall variability, and how they are interrelated, is currently unclear. The objective of this review article is to provide a comprehensive update on the different factors that influence the pharmacokinetics and pharmacodynamics of clopidogrel and how they mechanistically contribute to inter-individual differences in the response to clopidogrel treatment.
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Affiliation(s)
- Xi-Ling Jiang
- Department of Pharmaceutics, Center for Pharmacometrics and Systems Pharmacology, University of Florida at Lake Nona (Orlando), 6550 Sanger Road, Room 467, Orlando, FL, 32827, USA
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Pedersen RS, Nielsen F, Stage TB, Vinholt PJ, el Achwah AB, Damkier P, Brosen K. CYP2C19*17 increases clopidogrel-mediated platelet inhibition but does not alter the pharmacokinetics of the active metabolite of clopidogrel. Clin Exp Pharmacol Physiol 2015; 41:870-8. [PMID: 25115434 DOI: 10.1111/1440-1681.12297] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Revised: 07/16/2014] [Accepted: 08/05/2014] [Indexed: 12/16/2022]
Abstract
The aim of the present study was to determine the impact of CYP2C19*17 on the pharmacokinetics and pharmacodynamics of the active metabolite of clopidogrel and the pharmacokinetics of proguanil. Thus, we conducted an open-label two-phase cross-over study in 31 healthy male volunteers (11 CYP2C19*1/*1, 11 CYP2C19*1/*17 and nine CYP2C19*17/*17). In Phase A, the pharmacokinetics of the derivatized active metabolite of clopidogrel (CAMD) and platelet function were determined after administration of a single oral dose of 600 mg clopidogrel (Plavix; Sanofi-Avensis, Horsholm, Denmark). In Phase B, the pharmacokinetics of proguanil and its metabolites cycloguanil and 4-chlorphenylbiguanide (4-CPB) were determined in 29 of 31 subjects after a single oral dose of 200 mg proguanil given as the combination drug Malarone (GlaxoSmithKline Pharma, Brondby, Denmark). Significant correlations were found between the area under the time-concentration curve (AUC0-∞ ) of CAMD and both the absolute ADP-induced P2Y12 receptor-activated platelet aggregation (r = -0.60, P = 0.0007) and the percentage inhibition of aggregation (r = 0.59, P = 0.0009). In addition, the CYP2C19*17/*17 and CYP2C19*1/*17 genotype groups had significantly higher percentage inhibition of platelet aggregation compared with the CYP2C19*1/*1 subjects (geometric mean percentage inhibition of 84%, 73% and 63%, respectively; P = 0.014). Neither the absolute ADP-induced P2Y12 receptor-activated platelet aggregation, exposure to CAMD nor the pharmacokinetic parameters of proguanil, cycloguanil and 4-CPB exhibited any significant differences among the genotype groups. In conclusion, carriers of CYP2C19*17 exhibit higher percentage inhibition of platelet aggregation, but do not have significantly lower absolute P2Y12 receptor-activated platelet aggregation or higher exposure to the active metabolite after a single oral administration of 600 mg clopidogrel.
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Affiliation(s)
- Rasmus Steen Pedersen
- Institute of Public Health, Clinical Pharmacology, University of Southern Denmark, Odense, Denmark
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Abstract
Antithrombotic drugs, which include antiplatelet and anticoagulant therapies, prevent and treat many cardiovascular disorders and, as such, are some of the most commonly prescribed drugs worldwide. The first drugs designed to inhibit platelets or coagulation factors, such as the antiplatelet clopidogrel and the anticoagulant warfarin, significantly reduced the risk of thrombotic events at the cost of increased bleeding in patients. However, both clopidogrel and warfarin have some pharmacological limitations including interpatient variability in antithrombotic effects in part due to the metabolism, interactions (eg, drug, environment, and genetic), or targets of the drugs. Increased knowledge of the pharmacology of antithrombotic drugs and the mechanisms underlying thrombosis has led to the development of newer drugs with faster onset of action, fewer interactions, and less interpatient variability in their antithrombotic effects than previous antithrombotic drugs. Treatment options now include the next-generation antiplatelet drugs prasugrel and ticagrelor, and, in terms of anticoagulants, inhibitors that directly target factor IIa (dabigatran) or Xa (rivaroxaban, apixaban, edoxaban) are available. In this Series paper we review the pharmacological properties of these most commonly used oral antithrombotic drugs, and explore the development of antiplatelet and anticoagulant therapies.
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Affiliation(s)
- Jessica L Mega
- TIMI Study Group, Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
| | - Tabassome Simon
- Assistance Publique-Hôpitaux de Paris, Hôpital Saint Antoine, Department of Clinical Pharmacology and Unité de Recherche Clinique (URCEST), Paris, France; Université Pierre et Marie Curie, Paris, France; Institut National de la Santé et de la Recherche Médicale, National Institute of Health and Medical Research, U-698, Paris, France
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35
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Yang Y, Lewis JP, Hulot JS, Scott SA. The pharmacogenetic control of antiplatelet response: candidate genes and CYP2C19. Expert Opin Drug Metab Toxicol 2015; 11:1599-617. [PMID: 26173871 DOI: 10.1517/17425255.2015.1068757] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Aspirin, clopidogrel, prasugrel and ticagrelor are antiplatelet agents for the prevention of ischemic events in patients with acute coronary syndromes (ACS), percutaneous coronary intervention (PCI) and other indications. Variability in response is observed to different degrees with these agents, which can translate to increased risks for adverse cardiovascular events. As such, potential pharmacogenetic determinants of antiplatelet pharmacokinetics, pharmacodynamics and clinical outcomes have been actively studied. AREAS COVERED This article provides an overview of the available antiplatelet pharmacogenetics literature. Evidence supporting the significance of candidate genes and their potential influence on antiplatelet response and clinical outcomes are summarized and evaluated. Additional focus is directed at CYP2C19 and clopidogrel response, including the availability of clinical testing and genotype-directed antiplatelet therapy. EXPERT OPINION The reported aspirin response candidate genes have not been adequately replicated and few candidate genes have thus far been implicated in prasugrel or ticagrelor response. However, abundant data support the clinical validity of CYP2C19 and clopidogrel response variability among ACS/PCI patients. Although limited prospective trial data are available to support the utility of routine CYP2C19 testing, the increased risks for reduced clopidogrel efficacy among ACS/PCI patients that carry CYP2C19 loss-of-function alleles should be considered when genotype results are available.
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Affiliation(s)
- Yao Yang
- a 1 Icahn School of Medicine at Mount Sinai, Department of Genetics and Genomic Sciences , New York, NY, USA +1 212 241 3780 ; +1 212 241 0139 ;
| | - Joshua P Lewis
- b 2 University of Maryland School of Medicine, Division of Endocrinology, Diabetes and Nutrition, and Program for Personalized and Genomic Medicine , Baltimore, MD, USA
| | - Jean-Sébastien Hulot
- c 3 Icahn School of Medicine at Mount Sinai, Cardiovascular Research Center , New York, NY, USA.,d 4 Sorbonne Universités, UPMC Univ Paris 06, INSERM , UMR_S 1166 ICAN, F-75005 Paris, France
| | - Stuart A Scott
- a 1 Icahn School of Medicine at Mount Sinai, Department of Genetics and Genomic Sciences , New York, NY, USA +1 212 241 3780 ; +1 212 241 0139 ;
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Shaw SA, Balasubramanian B, Bonacorsi S, Cortes JC, Cao K, Chen BC, Dai J, Decicco C, Goswami A, Guo Z, Hanson R, Humphreys WG, Lam PYS, Li W, Mathur A, Maxwell BD, Michaudel Q, Peng L, Pudzianowski A, Qiu F, Su S, Sun D, Tymiak AA, Vokits BP, Wang B, Wexler R, Wu DR, Zhang Y, Zhao R, Baran PS. Synthesis of Biologically Active Piperidine Metabolites of Clopidogrel: Determination of Structure and Analyte Development. J Org Chem 2015; 80:7019-32. [PMID: 26151079 DOI: 10.1021/acs.joc.5b00632] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Clopidogrel is a prodrug anticoagulant with active metabolites that irreversibly inhibit the platelet surface GPCR P2Y12 and thus inhibit platelet activation. However, gaining an understanding of patient response has been limited due to imprecise understanding of metabolite activity and stereochemistry, and a lack of acceptable analytes for quantifying in vivo metabolite formation. Methods for the production of all bioactive metabolites of clopidogrel, their stereochemical assignment, and the development of stable analytes via three conceptually orthogonal routes are disclosed.
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Affiliation(s)
- Scott A Shaw
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Balu Balasubramanian
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Samuel Bonacorsi
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Janet Caceres Cortes
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Kevin Cao
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Bang-Chi Chen
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Jun Dai
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Carl Decicco
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Animesh Goswami
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Zhiwei Guo
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Ronald Hanson
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - W Griffith Humphreys
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Patrick Y S Lam
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Wenying Li
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Arvind Mathur
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Brad D Maxwell
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Quentin Michaudel
- ‡Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Li Peng
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Andrew Pudzianowski
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Feng Qiu
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Shun Su
- ‡Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Dawn Sun
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Adrienne A Tymiak
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Benjamin P Vokits
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Bei Wang
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Ruth Wexler
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Dauh-Rurng Wu
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Yingru Zhang
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Rulin Zhao
- †Research and Development, Bristol-Myers Squibb Company, P.O. Box 5400, Princeton, New Jersey 08543-5400, United States
| | - Phil S Baran
- ‡Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
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Shahabi P, Dubé MP. Cardiovascular pharmacogenomics; state of current knowledge and implementation in practice. Int J Cardiol 2015; 184:772-795. [DOI: 10.1016/j.ijcard.2015.02.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 02/17/2015] [Accepted: 02/21/2015] [Indexed: 02/07/2023]
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Djebli N, Fabre D, Boulenc X, Fabre G, Sultan E, Hurbin F. Physiologically Based Pharmacokinetic Modeling for Sequential Metabolism: Effect of CYP2C19 Genetic Polymorphism on Clopidogrel and Clopidogrel Active Metabolite Pharmacokinetics. Drug Metab Dispos 2015; 43:510-22. [DOI: 10.1124/dmd.114.062596] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Markert C, Kastner IM, Hellwig R, Kalafut P, Schweizer Y, Hoffmann MM, Burhenne J, Weiss J, Mikus G, Haefeli WE. The effect of induction of CYP3A4 by St John's wort on ambrisentan plasma pharmacokinetics in volunteers of known CYP2C19 genotype. Basic Clin Pharmacol Toxicol 2014; 116:423-8. [PMID: 25286744 DOI: 10.1111/bcpt.12332] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 09/22/2014] [Indexed: 11/29/2022]
Abstract
To evaluate the impact of CYP2C19 polymorphisms on ambrisentan exposure and to assess its modification by St. John's wort (SJW), 20 healthy volunteers (10 CYP2C19 extensive, four poor and six ultrarapid metabolizers) received therapeutic doses of ambrisentan (5 mg qd po) for 20 days and concomitantly SJW (300 mg tid po) for the last 10 days. To quantify changes of CYP3A4 activity, midazolam (3 mg po) as a probe drug was used. Ambrisentan pharmacokinetics was assessed on days 1, 10 and 20, and midazolam pharmacokinetics before and on days 1, 10, 17 and 20. At steady state, ambrisentan exposure was similar in extensive and ultrarapid metabolizers but 43% larger in poor metabolizers (p < 0.01). In all volunteers, SJW reduced ambrisentan exposure and the relative change (17-26%) was similar in all genotype groups. The extent of this interaction did not correlate with the changes in CYP3A activity (midazolam clearance) (rs = 0.23, p = 0.34). Ambrisentan had no effect on midazolam pharmacokinetics. In conclusion, SJW significantly reduced exposure with ambrisentan irrespective of the CYP2C19 genotype. The extent of this interaction was small and thus likely without clinical relevance.
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Affiliation(s)
- Christoph Markert
- Department of Clinical Pharmacology and Pharmacoepidemiology, University of Heidelberg, Heidelberg, Germany
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Zhang JH, Tang XF, Zhang Y, Wang J, Yao Y, Ma YL, Xu B, Gao RL, Gao Z, Chen J, Song L, Wu Y, Meng XM, Yuan JQ. Relationship between ABCB1 polymorphisms, thromboelastography and risk of bleeding events in clopidogrel-treated patients with ST-elevation myocardial infarction. Thromb Res 2014; 134:970-5. [PMID: 25217066 DOI: 10.1016/j.thromres.2014.08.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/19/2014] [Accepted: 08/19/2014] [Indexed: 11/26/2022]
Abstract
INTRODUCTION This study sought to investigate the relationship of polymorphisms in ABCB1 and the predictive value of thromboelastography (TEG) on bleeding risk in clopidogrel-treated patients with ST-elevation myocardial infarction (STEMI). METHODS 467 consecutive patients with STEMI undergoing percutaneous coronary intervention (PCI) were enrolled. Twenty tag single nucleotide polymorphisms (SNPs) selected from ABCB1 gene and CYP2C19*2, *3, *17 were detected by the ligase detection reaction. Platelet reactivity was assessed by TEG. The follow-up period was 12months. RESULTS By receiver operating characteristic curve analysis, the TEG platelet mapping assay value of ADP inhibition had the best predictive value of bleeding academic research consortium definition (BARC) ≥ 3b bleedings, yielding an area under the curve (AUC) of 0.707 (95% CI 0.662-0.749, p=0.009; cut-off value > 93.4%). ADP inhibition can also predict BARC ≥ 3 bleedings with an AUC of 0.594 (95% CI 0.546-0.640, p = 0.05; cut-off value > 92.5%). After adjustment for established risk factors of bleeding including the gain of function CYP2C19*17 allele, age, female gender, renal function, the multivariable logistic regression model demonstrated that ADP inhibition > 92.5% (OR 2.247, 95%CI 1.082-4.665, P=0.03), carriage of rs1045642 (OR 2.943, 95%CI 1.195-7.247, P = 0.019) and rs7779562 (OR 0.453, 95%CI 0.219-0.936, P = 0.032) were independent predictors of BARC ≥ 3 bleedings. These associations were validated in a second cohort of 504 STEMI patients. CONCLUSIONS In STEMI patients treated with clopidogrel after PCI, the ABCB1 tag SNP rs1045642 is associated with higher risk of bleedings while rs7779562 is associated with lower bleeding risk, and ADP inhibition in TEG has a predictive value of bleedings.
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Affiliation(s)
- Jia-Hui Zhang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Xiao-Fang Tang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Yin Zhang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Jing Wang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Yi Yao
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Yuan-Liang Ma
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Bo Xu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Run-Lin Gao
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Zhan Gao
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Jue Chen
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Lei Song
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Yuan Wu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China
| | - Xian-Min Meng
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China.
| | - Jin-Qing Yuan
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 Beilishi Road, Xicheng District, Beijing 100037, People's Republic of China.
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Hariharan S, Southworth MR, Madabushi R. Clopidogrel, CYP2C19 and proton pump inhibitors: What we know and what it means. J Clin Pharmacol 2014; 54:884-8. [DOI: 10.1002/jcph.337] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 06/02/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Sudharshan Hariharan
- Office of Clinical Pharmacology; Center for Drug Evaluation and Research; U.S. Food and Drug Administration Silver Spring MD USA
| | - Mary Ross Southworth
- Division of Cardiovascular and Renal Products; Office of New Drugs; Center for Drug Evaluation and Research; U.S. Food and Drug Administration; Silver Spring MD USA
| | - Rajanikanth Madabushi
- Office of Clinical Pharmacology; Center for Drug Evaluation and Research; U.S. Food and Drug Administration Silver Spring MD USA
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Hu ZY, Laizure SC, Herring VL, Parker RB. Identification of alcohol-dependent clopidogrel metabolites using conventional liquid chromatography/triple quadrupole mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2014; 28:1285-1292. [PMID: 24760569 PMCID: PMC4034390 DOI: 10.1002/rcm.6901] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 03/16/2014] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
RATIONALE Clopidogrel (CLO) is a prodrug used to prevent ischemic events in patients undergoing percutaneous coronary intervention or with myocardial infarction. A previous study found ethyl clopidogrel (ECLO) is formed by transesterification of CLO when incubated with alcohol in human liver microsomes. We hypothesize that ECLO will be subject to further metabolism and developed an assay to identify its metabolites. METHODS A liquid chromatography/triple quadrupole mass spectrometry (LC/MS/MS) method was developed to identify metabolites of ECLO. According to the predicted metabolic pathway of ECLO, precursor-product ion pairs were used to screen the possible metabolites of ECLO in human liver S9 fractions. Subsequently, the detected metabolites were characterized by the results of product ion scan. RESULTS In the presence of alcohol, CLO was tranesterified to ECLO, which was further oxidized to form ethylated 2-oxo-clopidogrel and several ethylated thiol metabolites including the ethylated form of the H4 active metabolite. CONCLUSIONS The ECLO formed by transesterification with alcohol is subject to metabolism by CYP450 enzymes producing ethylated forms of 2-oxo-clopidogrel and the active H4 thiol metabolite.
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Affiliation(s)
- Zhe-Yi Hu
- Correspondence to: Zhe-Yi Hu, University of Tennessee Health Science Center, College of Pharmacy, Department of Clinical Pharmacy, 881 Madison Ave., Room 328, Memphis, TN 38163, USA.
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Horenstein RB, Madabushi R, Zineh I, Yerges-Armstrong LM, Peer CJ, Schuck RN, Figg WD, Shuldiner AR, Pacanowski MA. Effectiveness of clopidogrel dose escalation to normalize active metabolite exposure and antiplatelet effects in CYP2C19 poor metabolizers. J Clin Pharmacol 2014; 54:865-73. [PMID: 24710841 DOI: 10.1002/jcph.293] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Accepted: 03/21/2014] [Indexed: 11/05/2022]
Abstract
Carriers of two copies of the loss-of-function CYP2C19*2 variant convert less clopidogrel into its active metabolite, resulting in diminished antiplatelet responses and higher cardiovascular event rates. To evaluate whether increasing the daily clopidogrel dose in poor metabolizers (PM) overcomes the effect of the CYP2C19 * 2 variant, we enrolled 18 healthy participants in a genotype-stratified, multi-dose, three-period, fixed-sequence crossover study. Six participants with the *1/*1 extensive (EM), *1/*2 intermediate (IM), and *2/*2 poor metabolizer genotypes each received 75 mg, 150 mg, and 300 mg each for 8 days. In each period, maximal platelet aggregation 4 hours post-dose (MPA4) and active metabolite area under the curve (AUC) differed among genotype groups (P < .05 for all). At day 8, PMs needed 300 mg daily and IMs needed 150 mg daily to attain a similar MPA4 as EMs on the 75 mg dose (32.6%, 33.2%, 31.3%, respectively). Similarly, PMs needed 300 mg daily to achieve active metabolite concentrations that were similar to EMs on 75 mg (AUC 37.7 and 33.5 ng h/mL, respectively). These results suggest that quadrupling the usual clopidogrel dose might be necessary to overcome the effect of poor CYP2C19 metabolism.
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Affiliation(s)
- Richard B Horenstein
- Program in Personalized and Genomic Medicine, Division of Endocrinology, Diabetes and Nutrition, University of Maryland School of Medicine, Baltimore, MD, USA
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Thomas MR, Storey RF. Genetics of Response to Antiplatelet Therapy. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2014; 124:123-53. [DOI: 10.1016/b978-0-12-386930-2.00006-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Kim HS, Cho DY, Park BM, Bae SK, Yoon YJ, Oh M, Ghim JL, Kim EY, Kim DH, Shin JG. The effect of CYP2C19 genotype on the time course of platelet aggregation inhibition after clopidogrel administration. J Clin Pharmacol 2013; 54:850-7. [DOI: 10.1002/jcph.225] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 11/01/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Ho-Sook Kim
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Doo-Yeoun Cho
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Bo-Min Park
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Soo-Kyoung Bae
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Yune-Jung Yoon
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Minkyung Oh
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
| | - Jong-lyul Ghim
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Eun-Young Kim
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
| | - Dong-Hyun Kim
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
| | - Jae-Gook Shin
- Department of Pharmacology and PharmacoGenomics Research Center; Inje University College of Medicine; Busan Republic of Korea
- Department of Clinical Pharmacology; Inje University Busan Paik Hospital; Busan Republic of Korea
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Abstract
Variability in drug responsiveness is a sine qua non of modern therapeutics, and the contribution of genomic variation is increasingly recognized. Investigating the genomic basis for variable responses to cardiovascular therapies has been a model for pharmacogenomics in general and has established critical pathways and specific loci modulating therapeutic responses to commonly used drugs such as clopidogrel, warfarin, and statins. In addition, genomic approaches have defined mechanisms and genetic variants underlying important toxicities with these and other drugs. These findings have not only resulted in changes to the product labels but also have led to development of initial clinical guidelines that consider how to facilitate incorporating genetic information to the bedside. This review summarizes the state of knowledge in cardiovascular pharmacogenomics and considers how variants described to date might be deployed in clinical decision making.
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Fisch AS, Perry CG, Stephens SH, Horenstein RB, Shuldiner AR. Pharmacogenomics of anti-platelet and anti-coagulation therapy. Curr Cardiol Rep 2013; 15:381. [PMID: 23797323 DOI: 10.1007/s11886-013-0381-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Arterial thrombosis is a major component of vascular disease, especially myocardial infarction (MI) and stroke. Current anti-thrombotic therapies such as warfarin and clopidogrel are effective in inhibiting cardiovascular events; however, there is great inter-individual variability in response to these medications. In recent years, it has been recognized that genetic factors play a significant role in drug response, and, subsequently, common variants in genes responsible for metabolism and drug action have been identified. These discoveries along with new diagnostic targets and therapeutic strategies hold promise for more effective individualized anti-coagulation and anti-platelet therapy.
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Affiliation(s)
- Adam S Fisch
- Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, and the Program in Personalized and Genomic Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Abstract
PURPOSE OF REVIEW To review the most promising genetic markers associated with the variability in the safety or efficacy of warfarin and clopidogrel and highlight the verification and validation initiatives for translating clopidogrel and warfarin pharmacogenetic tests to clinical practice. RECENT FINDINGS Rapid advances in pharmacogenetics, continuous decrease in genotyping cost, development of point-of-care devices and the newly established clinical genotyping programs at several institutions hold the promise of individualizing clopidogrel and warfarin based on genotype. Guidelines have been established to assist clinicians in prescribing clopidogrel or warfarin dose based on genotype. However, the clinical utility of clopidogrel and warfarin is still limited. Accordingly, large randomized clinical trials are underway to define the role of clopidogrel and warfarin pharmacogenetics in clinical practice. SUMMARY Pharmacogenetics has offered compelling evidence toward the individualization of clopidogrel and warfarin therapies. The rapid advances in technology make the clinical implementation of clopidogrel and warfarin pharmacogenetics possible. The clinical genotyping programs and the ongoing clinical trials will help in overcoming some of the barriers facing the clinical implementation of clopidogrel and warfarin pharmacogenetics.
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Markert C, Hellwig R, Burhenne J, Hoffmann MM, Weiss J, Mikus G, Haefeli WE. Interaction of ambrisentan with clarithromycin and its modulation by polymorphic SLCO1B1. Eur J Clin Pharmacol 2013; 69:1785-93. [PMID: 23748747 DOI: 10.1007/s00228-013-1529-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 05/16/2013] [Indexed: 01/27/2023]
Abstract
PURPOSE We assessed the effect of cytochrome P450 (CYP) 3A4 and the OATP1B1 inhibitor clarithromycin on ambrisentan steady-state kinetics and its relationship to the SLCO1B1 15 haplotype in healthy volunteers. METHODS In this open-label, monocenter, one-sequence crossover clinical trial ten male healthy participants were stratified according to CYP2C19 and SLCO1B1 (encoding for OATP1B1) genotype into two groups: group 1 (n = 6), with CYP2C19 1/1 (extensive metabolizer, EM) and SLCO1B1 wild-type; group 2 (n = 4), with CYP2C19 EM and homozygous (n = 3) or heterozygous for SLCO1B1 15 (n = 1). The participants were administered a once-daily oral dose of 5 mg ambrisentan on study days 1 and days 3-14 and twice-daily oral doses of 500 mg clarithromycin on study days 11-14. To monitor CYP3A activity 3 mg midazolam was given orally 1 day before the first ambrisentan administration and on days 1, 10, and 14 of ambrisentan treatment. Ambrisentan plasma kinetics was assessed on days 1 (single dose), 10 (steady-state), and 14 (CYP3A4/OATP1B1 inhibition by clarithromycin). RESULTS Consistent with the expectation that ambrisentan does not induce its own metabolism, ambrisentan exposure and peak concentration (Cmax) were similar after the first dose and at steady-state. Clarithromycin increased the area under the plasma concentration-time curve of ambrisentan by 41 % and Cmax by 27 % (n = 10, both p < 0.05). No contribution of SLCO1B1*15 to the extent of this interaction was observed. CONCLUSIONS Clarithromycin increased ambrisentan exposure to a similar extent to ketoconazole, namely, clinically minor and likely irrelevant.
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Affiliation(s)
- Christoph Markert
- Department of Clinical Pharmacology and Pharmacoepidemiology, University Hospital of Heidelberg, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
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Perry CG, Shuldiner AR. Pharmacogenomics of anti-platelet therapy: how much evidence is enough for clinical implementation? J Hum Genet 2013; 58:339-45. [PMID: 23697979 PMCID: PMC3715315 DOI: 10.1038/jhg.2013.41] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Pharmacogenomics, the study of the genomics of drug response and adverse effects, holds great promise for more effective individualized (personalized) medicine. Recent evidence supports a role of loss-of-function (LOF) variants in the cytochrome P450 enzyme CYP2C19 as a determinant of clopidogrel response. Patients given clopidogrel after percutaneous coronary intervention who carry LOF variants do not metabolize clopidogrel, a prodrug, into its active form resulting in decreased inhibition of platelet function and a higher likelihood of recurrent cardiovascular events. Despite a large body of evidence supporting clinical utility, adoption of anti-platelet pharmacogenetics into clinical practice has been slow. In this review, we summarize the pharmacokinetic, pharmacodynamic and clinical evidence, identify gaps in knowledge and other barriers that appear to be slowing adoption, and describe CYP2C19 pharmacogenetics implementation projects currently underway. Only when we surmount these barriers will clinicians be able to use pharmacogenetic information in conjunction with the history, physical examination and other medical tests and information to choose the most efficacious anti-platelet therapy for each individual patient.
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Affiliation(s)
- Christina G. Perry
- Program in Personalized and Genomic Medicine, and the Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland USA
| | - Alan R. Shuldiner
- Program in Personalized and Genomic Medicine, and the Division of Endocrinology, Diabetes and Nutrition, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland USA
- Geriatric Research and Education Clinical Center, Veterans Administration Medical Center, Baltimore, Maryland USA
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