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Djordjevic N. Genotyping genetic variants of CYP2C19 for precision antiplatelet dosing: state of the art and future perspectives. Expert Opin Drug Metab Toxicol 2022; 18:817-830. [PMID: 36606363 DOI: 10.1080/17425255.2022.2166486] [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: 01/07/2023]
Abstract
INTRODUCTION Clopidogrel is the only antiplatelet agent whose activity is significantly affected by CYP2C19 polymorphism. AREAS COVERED This review has summarized the available evidence on the clinically significant association between CYP2C19 polymorphism and clopidogrel-based therapy; reviewed the current recommendations for clinical use of CYP2C19 genotype test results in patients on clopidogrel treatment; and discussed possible pitfalls of routine application, and future perspectives of antiplatelets pharmacogenetics. EXPERT OPINION The available body of evidence, reflected in several meta-analyses and high-quality clinical practice guidelines, shows that the presence of CYP2C19 LOF alleles, especially CYP2C19*2, correlates with impaired activation of clopidogrel and variable platelet inhibition, followed by minimal or no antiplatelet effect, and higher risk of treatment failure. In combination with other known risk factors, CYP2C19 genetic testing could be very valuable in predicting low clopidogrel efficacy. At the same time, it could be very successful in selecting patients who will most probably benefit from the clopidogrel-based therapy, thus decreasing the pool of those who might need more expensive and otherwise riskier antiplatelet alternatives.
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Affiliation(s)
- Natasa Djordjevic
- Faculty of Medical Sciences, Department of Pharmacology and Toxicology, University of Kragujevac, Svetozara Markovica 69, 34 000 Kragujevac, Serbia
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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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Relationship between CYP2C19 Polymorphism and Clopidogrel Resistance in Patients with Coronary Heart Disease and Ischemic Stroke in China. Genet Res (Camb) 2022; 2022:1901256. [PMID: 36325266 PMCID: PMC9616677 DOI: 10.1155/2022/1901256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/15/2022] [Indexed: 11/25/2022] Open
Abstract
Objective Clopidogrel is widely used for preventing ischemic complications related to cardiovascular diseases. However, many patients experience clopidogrel resistance (CR). The polymorphisms of CYP2C19 have been implicated in CR, but CYP2C19 polymorphism considerably varies with both ethnic group and geographical location. This study aimed to investigate the association between CYP2C19 polymorphisms and clopidogrel resistance (CR) in patients with coronary heart disease and ischemic stroke among Han and Tibetan populations in Qinghai Province, China. Methods From June 2019 to January 2020, patients who were diagnosed with coronary heart disease or cerebral infarction in internal medicine of Qinghai Provincial People's Hospital and had taken dual antiplatelet drugs were included in this study. Blood was collected and routine items were completed. Whole exome sequencing was performed for CYP2C19 genetic polymorphisms of CYP2C19∗2 (rs4244285), CYP2C19∗3 (rs4986893), and CYP2C19∗17 (rs12248560). Results A total of 91 patients with coronary heart disease or cerebral infarction (67 Han people (65.99 ± 12.25 years old) and 24 Tibetan (63.6324 Tib years old)) including 52 cases with CR and 39 cases with non-CR were enrolled in this study. For the Han population, the differences in age, glycosylated hemoglobin, activated partial thromboplastin time (APTT), gender, aspirin resistance, and diabetes were significant between the CR and non-CR groups. For the Tibetan population, the two groups showed no significant difference in all indicators. There was no significant difference between CR and non-CR groups for all genotypes (CYP2C19 ∗2, ∗3, and ∗17) in either Han or Tibetan populations. For the Han populations, age, APTT, and aspirin resistance were significantly correlated with CR. Conclusion The present study indicated that CYP2C19∗2, CYP2C19∗3, and CYP2C19∗17 alleles were not correlated with CR for both Han and Tibetan populations in Qinghai Province, while age, APTT, and aspirin resistance were independent risk factors of CR in this region.
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Xian Y, Xu H, Matsouaka R, Laskowitz DT, Maisch L, Hannah D, Smith EE, Fonarow GC, Bhatt DL, Schwamm LH, Mac Grory B, Feng W, Fosbøl EL, Peterson ED, Johnson M. Analysis of Prescriptions for Dual Antiplatelet Therapy After Acute Ischemic Stroke. JAMA Netw Open 2022; 5:e2224157. [PMID: 35900761 PMCID: PMC9335137 DOI: 10.1001/jamanetworkopen.2022.24157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
IMPORTANCE After the publication of the CHANCE (Clopidogrel in High Risk Patients With Acute Nondisabling Cerebrovascular Events) and POINT (Platelet-Oriented Inhibition in New Transient Ischemic Attack and Minor Ischemic Stroke) clinical trials, the American Heart Association/American Stroke Association (AHA/ASA) issued a new class 1, level of evidence A, recommendation for dual antiplatelet therapy (DAPT; aspirin plus clopidogrel) for secondary prevention in patients with minor ischemic stroke (National Institutes of Health Stroke Scale [NIHSS] score ≤3). The extent to which variations in DAPT prescribing patterns remain and the extent to which practice patterns in the US are consistent with evidence-based guidelines are unknown. OBJECTIVE To evaluate the discharge DAPT prescribing patterns after publication of the new AHA/ASA guidelines and assess the extent of hospital-level variation in the use of DAPT for secondary prevention in patients with minor stroke (NIHSS score ≤3), as indicated by guidelines, and in patients with nonminor stroke (NIHSS score >3), for whom the risks and benefits of DAPT have not been fully established. DESIGN, SETTING, AND PARTICIPANTS This multicenter retrospective cohort study involved 132 817 patients from 1890 hospitals participating in the AHA/ASA Get With The Guidelines-Stroke program. Patients who were hospitalized for acute ischemic stroke and prescribed antiplatelet therapy at discharge between October 1, 2019, and June 30, 2020, were included. EXPOSURES Minor ischemic stroke (NIHSS score ≤3) vs nonminor ischemic stroke (NIHSS score >3). MAIN OUTCOMES AND MEASURES The primary outcome was DAPT prescription at discharge. The extent to which variations in DAPT use were explained at the hospital level was assessed by calculating the median odds ratio (OR), which was derived using multivariable logistic regression analysis and compared the likelihood that 2 patients with identical clinical features admitted to 2 randomly selected hospitals (1 with higher propensity and 1 with lower propensity for DAPT use) would receive DAPT at discharge. Associations between hospital-level DAPT use among patients with minor vs nonminor stroke were evaluated using Pearson ρ correlation coefficients. RESULTS Among 132 817 patients (median [IQR] age, 68 [59-78] years; 68 768 men [51.8%]), 4282 (3.2%) were Asian, 11 254 (8.5%) were Hispanic, 27 221 (20.5%) were non-Hispanic Black, 84 468 (63.6%) were non-Hispanic White, and 5592 (4.2%) were of other races and/or ethnicities (including American Indian or Alaska Native, Native Hawaiian or Pacific Islander, and unable to determine). Overall, 86 551 patients (65.2%) presented with minor ischemic stroke, and 46 266 patients (34.8%) presented with nonminor ischemic stroke. After the 2019 AHA/ASA guideline updates, 40 661 patients (47.0%) with minor stroke (NIHSS median [IQR] score, 1 [0-2]) and 19 703 patients (42.6%) with nonminor stroke (NIHSS median [IQR] score, 6 [5-9]) received DAPT at discharge. Despite guideline recommendations, 45 890 patients (53.0%) with minor stroke did not receive DAPT. After accounting for patient characteristics, substantial hospital-level variations were found in the use of DAPT in those with minor stroke (median [IQR] hospital-level DAPT prescription rate, 44.8% [33.7%-57.7%]; range, 0%-91.7%; median OR, 2.03 [95% CI, 1.97-2.09]) when comparing 2 patients with identical risk factors discharged from 2 randomly selected hospitals, 1 with higher propensity and 1 with lower propensity for DAPT use. The use of DAPT in patients with nonminor stroke also varied significantly (median [IQR] hospital-level DAPT prescription rate, 41.4% [30.0%-53.8%]; range, 0%-100%; median OR, 1.90 [95% CI, 1.83-1.97]). Overall, hospitals that were more likely to prescribe DAPT for minor strokes were also more likely to prescribe DAPT for nonminor strokes (Pearson ρ = 0.72; P < .001). CONCLUSIONS AND RELEVANCE This cohort study found that despite updated AHA/ASA guidelines, more than 50% of patients with minor acute ischemic stroke did not receive DAPT at discharge. In contrast, more than 40% of patients with nonminor stroke received DAPT despite lack of evidence in this setting. These findings suggest that enhancing adherence to evidence-based DAPT practice guidelines may be a target for quality improvement in the treatment of patients with ischemic stroke.
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Affiliation(s)
- Ying Xian
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas
| | - Haolin Xu
- Duke Clinical Research Institute, Duke University, Durham, North Carolina
| | - Roland Matsouaka
- Duke Clinical Research Institute, Duke University, Durham, North Carolina
| | - Daniel T. Laskowitz
- Department of Neurology, Duke University School of Medicine, Durham, North Carolina
| | | | | | - Eric E. Smith
- Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada
| | - Gregg C. Fonarow
- Division of Cardiology, University of California at Los Angeles, Los Angeles
| | - Deepak L. Bhatt
- Division of Cardiovascular Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Lee H. Schwamm
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston
| | - Brian Mac Grory
- Department of Neurology, Duke University School of Medicine, Durham, North Carolina
| | - Wuwei Feng
- Department of Neurology, Duke University School of Medicine, Durham, North Carolina
| | - Emil Loldrup Fosbøl
- Department of Cardiology, University Hospital of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Eric D. Peterson
- Division of Cardiology, University of Texas Southwestern Medical Center, Dallas
| | - Mark Johnson
- Department of Neurology, University of Texas Southwestern Medical Center, Dallas
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Antiplatelet response to clopidogrel is associated with a haplotype in CYP2C19 gene in Pakistani patients. Sci Rep 2022; 12:6171. [PMID: 35418564 PMCID: PMC9007971 DOI: 10.1038/s41598-022-09679-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 02/15/2022] [Indexed: 11/09/2022] Open
Abstract
Clopidogrel, an antiplatelet drug, is frequently prescribed to patients diagnosed with ischemic diseases such as those suffering from acute coronary syndromes or ischemic stroke. Despite the drug being effective in majority of the patients, some still experience ischemic events early in the treatment which might be due to poor platelet inhibition. This study aims to investigate the association of cytochrome P450 2C19 (CYP2C19) loss-of-function polymorphisms, haplotypes as well as a wide range of clinical and demographic variables with platelet aggregation phenotypes to clopidogrel in a Pakistani cohort. The study comprised of a total of 120 patients diagnosed with cardiovascular diseases and were treated with clopidogrel. Antiplatelet response to clopidogrel was monitored by Helena AggRAM (HL-2-1785P) and patients with maximal platelet aggregation more than 50% were categorized as low responders and those with less than 50% as high responders. Our results show that 56.6% of patients were homozygous for the CYP2C19 wild-type allele, 38.3% of patients possessed one copy of the CYP2C19*2 allele and 5% of patients possessed both CYP2C19*2 alleles. No CYP2C19*3 allele was found in our patient cohort. There was no statistically significant difference between the high and low responder groups to clopidogrel in terms of extensive, intermediate and poor metabolizer genotypes. However, haplotype (H1), leukocyte count, random blood glucose, and history of diabetes mellitus was associated with the antiplatelet response to clopidogrel. The prevalence of clopidogrel resistance in our population was in line with that reported for other regional and global populations.
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Jafrin S, Naznin NE, Reza MS, Aziz MA, Islam MS. Risk of stroke in CYP2C19 LoF polymorphism carrier coronary artery disease patients undergoing clopidogrel therapy: An ethnicity-based updated meta-analysis. Eur J Intern Med 2021; 90:49-65. [PMID: 34092486 DOI: 10.1016/j.ejim.2021.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 04/20/2021] [Accepted: 05/16/2021] [Indexed: 02/01/2023]
Abstract
BACKGROUND Antiplatelet agent clopidogrel has been widely used for stroke management for many years, although resistance to clopidogrel may increase the chance of stroke recurrence. CYP2C19 loss-of-function (LoF) polymorphism is assumed to be responsible for the poor metabolism of clopidogrel that ultimately turns to resistance. Previous publications could not provide firm evidence due to highly conflicting and heterogeneous outcomes. AIM To get clear evidence from an updated meta-analysis on CYP2C19 LoF polymorphism association with stroke risk in clopidogrel treated patients, this study has been performed. METHODS We conducted a meta-analysis with 72 selected studies from authentic databases, including 40,035 coronary artery disease patients treated with clopidogrel. RESULTS This analysis showed that the worldwide carrier of one or more CYP2C19 LoF alleles had a significantly higher risk of stroke and composite events than the non-LoF carriers (RR=1.78, 95% CI=1.52-2.07, p<0.00001 and RR=1.39, 95% CI=1.26-1.54, p<0.00001, respectively). Besides, subgroup analysis showed that Asian CYP2C19 LoF carriers had a significantly increased risk of stroke (RR=1.91, 95% CI=1.60-2.28, p<0.00001) while the risk of composite events was significantly higher in all ethnic populations (Asian: RR=1.58, 95% CI=1.32-1.89, p<0.00001; Caucasian: RR=1.27, 95% CI=1.08-1.50, p=0.003; Hispanic and others: RR=1.21, 95% CI=1.09-1.34, p=0.0003). CONCLUSION Our meta-analysis confirmed that the presence of CYP2C19 LoF alleles increases the risk of stroke and composite events recurrence in the worldwide population, especially in Asians undergoing clopidogrel treatment. Alternative antiplatelet therapy should be investigated thoroughly for the intermediate and poor metabolizers.
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Affiliation(s)
- Sarah Jafrin
- Department of Pharmacy, Faculty of Science, Noakhali Science and Technology University, Sonapur 3814, Noakhali, Bangladesh
| | - Nura Ershad Naznin
- Department of Pharmacy, Faculty of Science, Noakhali Science and Technology University, Sonapur 3814, Noakhali, Bangladesh
| | - Md Sharif Reza
- Department of Pharmacy, Faculty of Science, Noakhali Science and Technology University, Sonapur 3814, Noakhali, Bangladesh
| | - Md Abdul Aziz
- Department of Pharmacy, Faculty of Science, Noakhali Science and Technology University, Sonapur 3814, Noakhali, Bangladesh
| | - Mohammad Safiqul Islam
- Department of Pharmacy, Faculty of Science, Noakhali Science and Technology University, Sonapur 3814, Noakhali, Bangladesh.
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Yoon BW, Hong JY. Spontaneous intermuscular hematoma in a patient receiving ticagrelor and aspirin: A case report. Biomed Rep 2021; 14:28. [PMID: 33408862 PMCID: PMC7780748 DOI: 10.3892/br.2020.1404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/14/2020] [Indexed: 12/05/2022] Open
Abstract
Dual antiplatelet therapy is a cornerstone treatment following percutaneous coronary intervention (PCI) for acute coronary syndrome (ACS). Ticagrelor, a direct-acting potent P2Y12 inhibitor, is superior to clopidogrel in the acute setting of ACS: due to its faster onset and potent antiplatelet inhibition. Thus, ticagrelor is becoming widely recommended as the as the initial treatment following PCI in current guidelines. However, due to its potency, the risk of bleeding is higher. Herein, a report of an unusual case of spontaneous intermuscular hematoma is described. Furthermore, single-nucleotide polymorphisms that may be related to bleeding in ticagrelor using population-based genome-wide association studies were also identified and are discussed. As there is a concern that patients of Asian origin may have a higher risk of bleeding, physicians must be made aware of this risk when prescribing ticagrelor to individuals of Asian decent.
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Affiliation(s)
- Byung Woo Yoon
- Department of Internal Medicine, Division of Hemato-Oncology, Seoul Paik Hospital, Seoul 04551, Republic of Korea.,Inje University, College of Medicine, Busan 47392, Republic of Korea
| | - Ji Yeon Hong
- Department of Internal Medicine, Division of Cardiology, Nowon Eulji Medical Center, Eulji University, Seoul 01830, Republic of Korea
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The Phenomenon of Clopidogrel High On-Treatment Platelet Reactivity in Ischemic Stroke Subjects: A Comprehensive Review. Int J Mol Sci 2020; 21:ijms21176408. [PMID: 32899176 PMCID: PMC7503235 DOI: 10.3390/ijms21176408] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 02/06/2023] Open
Abstract
Clopidogrel is increasingly being used for the secondary prevention of ischemic stroke according to the updated guidelines on acute stroke management. Failure to achieve a drug response is referred to as clopidogrel resistance. Similarly, a higher activation of platelets during clopidogrel therapy—high on-treatment platelet reactivity—is equivalent to a reduced effectiveness of a therapy. Clopidogrel resistance is considered to be a common and multifactorial phenomenon that significantly limits the efficacy of antiplatelet agents. The aim of the current study is to review the latest literature data to identify the prevalance and predictors of clopidogrel high on-treatment platelet reactivity among stroke subjects and to establish the potential impact on clinical outcomes and prognosis. Clinical databases were searched by two independent researchers to select relevant papers on the topic, including all types of articles. Several important predictors contributing to clopidogrel resistance were identified, including genetic polymorphisms, the concomitant use of other drugs, or vascular risk factors, in particular nonsmoking and diabetes. Clopidogrel high on-treatment platelet reactivity has a negative impact on the clinical course of stroke, worsens the early- and long-term prognoses, and increases the risk of recurrent vascular events. Platelet function testing should be considered in selected stroke individuals, especially those predisposed to clopidogrel resistance, for whom an improvement in the efficacy of antiplatelet therapy is essential. This particular group may become the greatest beneficiaries of the modification of existing therapy based on platelet function monitoring.
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Wang CA, Hsieh YC, Huang CY, Liu JC, Hsieh MH, Lin YK, Yeh JS. Comparison between ticagrelor versus clopidogrel in long term outcomes of Taiwanese diabetic subjects with acute coronary syndrome undergoing successful revascularization: From TSOC ACS-DM registry. Medicine (Baltimore) 2020; 99:e19969. [PMID: 32384446 PMCID: PMC7220397 DOI: 10.1097/md.0000000000019969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Although previous clinical trials demonstrated that ticagrelor could reduce cardiovascular events and mortality versus clopidogrel in patients with acute coronary syndrome (ACS), the real-world evidence of its clinical impacts on East Asian Diabetic population has rarely been investigated.Between November 2013 and June 2015, 1534 patients were recruited into the Acute Coronary Syndrome-Diabetes Mellitus Registry of the Taiwan Society of Cardiology (TSOC ACS-DM registry). After propensity score matching, a total of 730 patients undergoing successful revascularization and discharged on ticagrelor (N = 365) or clopidogrel (N = 365) were analyzed. The primary and secondary endpoints were all-cause mortality and re-hospitalization, respectively. The all-cause death associated with ticagrelor vs clopidogrel was 3.6% vs 7.4% (adjusted hazard ratio (HR) 0.34 [0.15-0.80]; P = .0138) at 24 months. The re-hospitalization rate at 24 months was 38.9% vs 39.2% (P = .3258).For diabetic patients with ACS, ticagrelor provided better survival benefit than clopidogrel without an increase of re-hospitalization in 24 months after successful percutaneous coronary intervention. This study in real-world circumstance provided valuable complementary data to externally validate platelet inhibition and patient outcomes (PLATO) finding especially in Asian diabetic population.
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Affiliation(s)
- Cheng-An Wang
- Division of Cardiovascular Medicine, Department of Internal Medicine, Taipei Municipal Wan-Fang Hospital, Taipei
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Taipei Heart Institute
| | - Yi-Chen Hsieh
- Ph.D Program of Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University
- Ph.D Program in Biotechnology Research and Development, College of Pharmacy, Taipei Medical University
- Master Program in Applied Molecular Epidemiology, College of Public Health, Taipei Medical University
| | - Chun-Yao Huang
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Taipei Heart Institute
- Division of Cardiology, Department of Internal Medicine and Cardiovascular Research Center, Taipei Medical University Hospital, Taipei
| | - Ju-Chi Liu
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Taipei Heart Institute
- Division of Cardiology, Department of Internal Medicine, Shuang Ho Hospital, Taipei Medical University, Taiwan
| | - Ming-Hsiung Hsieh
- Division of Cardiovascular Medicine, Department of Internal Medicine, Taipei Municipal Wan-Fang Hospital, Taipei
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Taipei Heart Institute
| | - Yung-Kuo Lin
- Division of Cardiovascular Medicine, Department of Internal Medicine, Taipei Municipal Wan-Fang Hospital, Taipei
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Taipei Heart Institute
| | - Jong-Shiuan Yeh
- Division of Cardiovascular Medicine, Department of Internal Medicine, Taipei Municipal Wan-Fang Hospital, Taipei
- Division of Cardiology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei
- Taipei Heart Institute
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Fu H, Hu P, Ma C, Peng F, He Z. Association of clopidogrel high on-treatment reactivity with clinical outcomes and gene polymorphism in acute ischemic stroke patients: An observational study. Medicine (Baltimore) 2020; 99:e19472. [PMID: 32282698 PMCID: PMC7220491 DOI: 10.1097/md.0000000000019472] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
High on-treatment platelet reactivity (HTPR) was suggested to be better correlated with recurrent ischemic events as compared with gene polymorphism, whereas most of the results were from white populations with acute coronary disease. The evidence is relatively limited regarding HTPR and its genetic determinants in predicting clinical outcomes of stroke among Chinese-Han patients.A prospective study including 131 Chinese-Han stroke patients treated with clopidogrel was analyzed. Platelet function was assessed by light transmission aggregometry (LTA)- adenosine diphosphate (ADP) method. HTPR was defined as 5 μM ADP induced platelet aggregation > 46%. CYP2C19 and P2Y12 genotype were detected using the PCR-RFLP method. The difference in the occurrence of the primary endpoint was analyzed according to platelet function and genetic status.Sixty-three (48.1%) subjects displayed HTPR after administering clopidogrel for 1 week. The prevalence of HTPR was significantly higher in CYP2C19 loss-of-function (LOF) alleles (2, 3) carriers vs wild-type homozygotes (71.7% vs 32.1%, P < .01), and logistic regression analysis showed that carriers of CYP2C19 LOF alleles were an independent risk factor of HTPR. Survival analysis indicated that patients with HTPR had an increased risk of primary endpoints (20.6% vs 7.3%, P = .04), whereas the presence of CYP2C19 LOF alleles or P2Y12 H2 haplotype did not increase the incidence of ischemic events. Cox regression analysis demonstrated that HTPR was an independent predictor of the primary composite endpoint (HR, 3.1; 95% CI, 1.07-8.99; P = .04).We identified a high prevalence of clopidogrel-HTPR in a cohort of Chinese-Han patients with acute ischemic stroke, and patients with HTPR may have an increased risk of recurrent ischemic stroke events. CYP2C19 LOF alleles are associated with HTPR but not with stroke prognosis. Further clinical trials with large samples are needed to confirm these findings.
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Affiliation(s)
- Hefei Fu
- Department of Neurology, The First Affiliated Hospital of China Medical University
| | - Pan Hu
- Department of Neurology, The First Affiliated Hospital of China Medical University
| | - Chunmei Ma
- Department of Neurology, Liaoning Electric Power Center Hospital
| | - Fei Peng
- Department of Neurology, Jinqiu Hospital of Liaoning Province, Shenyang, China
| | - Zhiyi He
- Department of Neurology, The First Affiliated Hospital of China Medical University
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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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Ahmed AA, Amber KI, Hadi NR. The Impact of Kinase Insert Domain (KDR) Gene Polymorphism rs2305948 on Clopidogrel Resistance in Iraqi Patients Undergoing Elective Percutaneous Coronary Intervention (PCI). Acta Inform Med 2020; 28:202-208. [PMID: 33417661 PMCID: PMC7780779 DOI: 10.5455/aim.2020.28.202-208] [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] [Indexed: 11/30/2022] Open
Abstract
Introduction: Clopidogrel, the first-choice antiplatelet agent for patient undergoing Percutaneous Coronary Intervention (PCI) along with Aspirin. Clopidogrel resistance is one of the major obstacles that cause MACE and failure of PCI. Kinase Insert Domain (KDR) gene responsible for VEGFR2 coding, the major receptor that translates VEGF ligand. The rs2305948 SNP in VEGFR2 gene has been documented to be involved atherogenesis and in CAD pathogenesis. Aim: To study the impact of KDR gene polymorphism rs2305948 on clopidogrel resistance in patients undergoing elective PCI. Methods: A case control study with 324 patients documented for elective PCI whom divided according to platelet aggregation level measured into (CR) with 111patients and (NCR) that consists of 213 patients. Serum lipids and VEGFR2 levels, BMI and platelet count were measured. Genotype for rs2305948 was done by PCR-RFLP. Results: Allele frequency and genotype results indicate a significant association with the pathogenesis of CR in all models in CR group compared to NCR group, a significant correlation for T allele with LDL, cholesterol and serum VEGFR2 in dominant and co-dominant models. RFLP-PCR results were documented by gene sequencing and results were compatible with HWE. Conclusion: rs2305948 SNP is associated with occurrences of CR and have an influence in the development of other metabolic changes.
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Affiliation(s)
- Ali A Ahmed
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa.,Al Najaf Center for Cardiovascular Surgery and Cardiac Catheterization in AL-Sadder Teaching Hospital in Al Najaf Al Ashraf Governorate, Iraq
| | - Khalid I Amber
- Al Najaf Center for Cardiovascular Surgery and Cardiac Catheterization in AL-Sadder Teaching Hospital in Al Najaf Al Ashraf Governorate, Iraq
| | - Najah R Hadi
- Department of Pharmacology and Therapeutics, Faculty of Medicine, University of Kufa
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Sibbing D, Aradi D, Alexopoulos D, ten Berg J, Bhatt DL, Bonello L, Collet JP, Cuisset T, Franchi F, Gross L, Gurbel P, Jeong YH, Mehran R, Moliterno DJ, Neumann FJ, Pereira NL, Price MJ, Sabatine MS, So DY, Stone GW, Storey RF, Tantry U, Trenk D, Valgimigli M, Waksman R, Angiolillo DJ. Updated Expert Consensus Statement on Platelet Function and Genetic Testing for Guiding P2Y12 Receptor Inhibitor Treatment in Percutaneous Coronary Intervention. JACC Cardiovasc Interv 2019; 12:1521-1537. [DOI: 10.1016/j.jcin.2019.03.034] [Citation(s) in RCA: 250] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 03/10/2019] [Accepted: 03/11/2019] [Indexed: 12/22/2022]
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Dávila-Fajardo CL, Díaz-Villamarín X, Antúnez-Rodríguez A, Fernández-Gómez AE, García-Navas P, Martínez-González LJ, Dávila-Fajardo JA, Barrera JC. Pharmacogenetics in the Treatment of Cardiovascular Diseases and Its Current Progress Regarding Implementation in the Clinical Routine. Genes (Basel) 2019; 10:genes10040261. [PMID: 30939847 PMCID: PMC6523655 DOI: 10.3390/genes10040261] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/25/2019] [Accepted: 03/26/2019] [Indexed: 12/18/2022] Open
Abstract
There is a special interest in the implementation of pharmacogenetics in clinical practice, although there are some barriers that are preventing this integration. A large part of these pharmacogenetic tests are focused on drugs used in oncology and psychiatry fields and for antiviral drugs. However, the scientific evidence is also high for other drugs used in other medical areas, for example, in cardiology. In this article, we discuss the evidence and guidelines currently available on pharmacogenetics for clopidogrel, warfarin, acenocoumarol, and simvastatin and its implementation in daily clinical practice.
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Affiliation(s)
- Cristina Lucía Dávila-Fajardo
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, 18016 Granada, Spain.
| | - Xando Díaz-Villamarín
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, 18016 Granada, Spain.
| | - Alba Antúnez-Rodríguez
- Genomics Unit, Centro Pfizer-Universidad de Granada-Junta de Andalucía de Genómica e Investigación Oncológica (Genyo), 18016 Granada, Spain.
| | - Ana Estefanía Fernández-Gómez
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, 18016 Granada, Spain.
| | - Paloma García-Navas
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, 18016 Granada, Spain.
| | - Luis Javier Martínez-González
- Genomics Unit, Centro Pfizer-Universidad de Granada-Junta de Andalucía de Genómica e Investigación Oncológica (Genyo), 18016 Granada, Spain.
| | | | - José Cabeza Barrera
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, 18016 Granada, Spain.
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Laboratory Monitoring of Antiplatelet Therapy. Platelets 2019. [DOI: 10.1016/b978-0-12-813456-6.00036-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Wang D, Yang XH, Zhang JD, Li RB, Jia M, Cui XR. Compared efficacy of clopidogrel and ticagrelor in treating acute coronary syndrome: a meta-analysis. BMC Cardiovasc Disord 2018; 18:217. [PMID: 30497387 PMCID: PMC6267904 DOI: 10.1186/s12872-018-0948-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 11/01/2018] [Indexed: 02/07/2023] Open
Abstract
Background & Aims Ticagrelor has been acknowledged as a new oral antagonist of P2Y12-adenosine diphosphate receptor, as a strategy with more rapid onset as well as more significant platelet inhibition function in acute coronary syndrome (ACS) patients. The clinical benefit of ticagrelor compared with clopidogrel remains controversial. The current meta-analysis was conducted to better evaluate the role of ticagrelor in comparison of clopidogrel in treating ACS patients. Methods The publications involving the safety as well as the efficacy of clopidogrel versus ticagrelor were screened and identified updated to June 2018. After rigorous review, eligible randomized controlled trials (RCTs) were extracted and propensity score matching (PSM) analysis was conducted. To analyze the summary odds ratios (ORs) of the endpoints of interest, we applied Meta-analysis Revman 5.3 software. Results There were a total of 10 studies that met our inclusion criteria, of which the risk of bleeding rate (P = 0.43), MI (P = 0.14), and stroke (P = 0.70) had no association with significant differences between patients receiving ticagrelor or clopidogrel. Nonetheless, higher rate of dyspnea was observed in ticagrelor group (OR = 1.87, 95% CI: 1.70–2.05, P<0.00001 = . Conclusions Our present findings suggest similar efficacy and safety profiles for clopidogrel and ticagrelor Ticagrelor should be considered as a valuable option to reduce the risk of bleeding, MI and stroke, whereas potentially increases the incidence of dyspnea. Given the metabolic process, ticagrelor may be a valid and even more potent antiplatelet drug than clopidogrel, as an alternative strategy in treating patients with clopidogrel intolerance or resistance.
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Affiliation(s)
- Dong Wang
- Department of Sixth Cardiovascular Medicine, Second Hospital of Hebei Medical University, No. 309 North Zhonghua Street, Shijiazhuang, 05400, Hebei, China
| | - Xiao-Hong Yang
- Department of Sixth Cardiovascular Medicine, Second Hospital of Hebei Medical University, No. 309 North Zhonghua Street, Shijiazhuang, 05400, Hebei, China.
| | - Ji-Dong Zhang
- Department of Sixth Cardiovascular Medicine, Second Hospital of Hebei Medical University, No. 309 North Zhonghua Street, Shijiazhuang, 05400, Hebei, China
| | - Rui-Bin Li
- Department of Sixth Cardiovascular Medicine, Second Hospital of Hebei Medical University, No. 309 North Zhonghua Street, Shijiazhuang, 05400, Hebei, China
| | - Min Jia
- Department of Sixth Cardiovascular Medicine, Second Hospital of Hebei Medical University, No. 309 North Zhonghua Street, Shijiazhuang, 05400, Hebei, China
| | - Xiao-Ran Cui
- Department of Sixth Cardiovascular Medicine, Second Hospital of Hebei Medical University, No. 309 North Zhonghua Street, Shijiazhuang, 05400, Hebei, China
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Kheiri B, Osman M, Abdalla A, Haykal T, Pandrangi PV, Chahine A, Ahmed S, Osman K, Bachuwa G, Hassan M, Bhatt DL. CYP2C19
pharmacogenetics versus standard of care dosing for selecting antiplatelet therapy in patients with coronary artery disease: A meta-analysis of randomized clinical trials. Catheter Cardiovasc Interv 2018; 93:1246-1252. [DOI: 10.1002/ccd.27949] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 09/05/2018] [Accepted: 10/08/2018] [Indexed: 01/08/2023]
Affiliation(s)
- Babikir Kheiri
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Mohammed Osman
- Division of Cardiology; West Virginia University School of Medicine; Morgantown West Virginia
| | - Ahmed Abdalla
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Tarek Haykal
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Pranay V. Pandrangi
- Department of Internal Medicine; Spectrum Health/Michigan State University; Grand Rapids Michigan
| | - Adam Chahine
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Sahar Ahmed
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Khansa Osman
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Ghassan Bachuwa
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Mustafa Hassan
- Department of Internal Medicine; Hurley Medical Center/Michigan State University; Flint Michigan
| | - Deepak L. Bhatt
- Brigham and Women's Hospital Heart and Vascular Center, Harvard Medical School; Boston Massachusetts
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Tantry US, Navarese EP, Bliden KP, Gurbel PA. The potential of genotype-guided antiplatelet therapy: promises and challenges. EXPERT REVIEW OF PRECISION MEDICINE AND DRUG DEVELOPMENT 2018. [DOI: 10.1080/23808993.2018.1552517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | - Kevin P. Bliden
- Inova Center for Thrombosis Research and Drug Development, Inova Heart and Vascular Institute, Falls Church, VA, US
| | - Paul A. Gurbel
- Inova Center for Thrombosis Research and Drug Development, Inova Heart and Vascular Institute, Falls Church, VA, US
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Zeb I, Krim N, Bella J. Role of CYP2C19 genotype testing in clinical use of clopidogrel: is it really useful? Expert Rev Cardiovasc Ther 2018; 16:369-377. [PMID: 29589775 DOI: 10.1080/14779072.2018.1459186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
INTRODUCTION P2Y12 inhibitors, including clopidogrel have become an integral part of treatment for patients receiving coronary stent placement as a result of stable coronary artery disease or acute coronary syndromes (ACS) and also for medically managed ACS patients. Areas covered: Clopidogrel efficacy can be significantly modified by polymorphism of CYP2C19 genotype (more than 25 allelic variants) involved in its metabolism that can adversely affect its anti-platelet activity. As a result, a substantial number of patients (20-30%) with ACS show an inadequate response to clopidogrel despite a standardized dosing regimen. Experts commentary: Currently, there is conflicting evidence in regards to the use of CYP2C19 genotyping to identify poor responders to clopidogrel in clinical practice. ACC/AHA guidelines do not recommend routine use of CYP2C19 in clinical practice, whereas Clinical Pharmacogenetics Implementation Consortium (CPIC) guidelines recommend its use to identify poor/intermediate metabolizers of Clopidogrel and suggest alternative P2Y12 inhibitors among ACS patients undergoing percutaneous coronary intervention. This review article will look at the literature evidence for the use of CYP2C19 genotyping in clinical practice.
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Affiliation(s)
- Irfan Zeb
- a Division of Cardiology, Department of Medicine , Bronxcare Health System , Bronx , NY , USA.,b Division of Cardiology, Department of Medicine , Icahn School of Medicine at Mount Sinai , New York , NY , USA
| | - Nassim Krim
- a Division of Cardiology, Department of Medicine , Bronxcare Health System , Bronx , NY , USA.,b Division of Cardiology, Department of Medicine , Icahn School of Medicine at Mount Sinai , New York , NY , USA
| | - Jonathan Bella
- a Division of Cardiology, Department of Medicine , Bronxcare Health System , Bronx , NY , USA.,b Division of Cardiology, Department of Medicine , Icahn School of Medicine at Mount Sinai , New York , NY , USA.,c Division of Cardiology, Department of Medicine , Weill Cornell Medicine , New York , NY , USA
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20
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Maserati M, Alexander SA. Genetics and Genomics of Acute Neurologic Disorders. AACN Adv Crit Care 2018; 29:57-75. [PMID: 29496714 DOI: 10.4037/aacnacc2018566] [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: 01/10/2023]
Abstract
Neurologic diseases and injuries are complex and multifactorial, making risk prediction, targeted treatment modalities, and outcome prognostication difficult and elusive. Genetics and genomics have affected clinical practice in many aspects in medicine, particularly cancer treatment. Advancements in knowledge of genetic and genomic variability in neurologic disease and injury are growing rapidly. Although these data are not yet ready for use in clinical practice, research continues to progress and elucidate information that eventually will provide answers to complex neurologic questions and serve as a platform to provide individualized care plans aimed at improving outcomes. This article provides a focused review of relevant literature on genetics, genomics, and common complex neurologic disease and injury likely to be seen in the acute care setting.
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Affiliation(s)
- Megan Maserati
- Megan Maserati is a PhD student at University of Pittsburgh, Pittsburgh, Pennsylvania. Sheila A. Alexander is Associate Professor, University of Pittsburgh, 336 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261
| | - Sheila A Alexander
- Megan Maserati is a PhD student at University of Pittsburgh, Pittsburgh, Pennsylvania. Sheila A. Alexander is Associate Professor, University of Pittsburgh, 336 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261
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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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22
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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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Trenk D, Schrör K, Gawaz M, Kristensen SD, Storey RF, Huber K, Siller-Matula JM. How to improve the concept of individualised antiplatelet therapy with P2Y12 receptor inhibitors – is an algorithm the answer? Thromb Haemost 2017; 113:37-52. [DOI: 10.1160/th14-03-0238] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2014] [Accepted: 07/22/2014] [Indexed: 01/03/2023]
Abstract
SummaryWithin the past decade, high on-treatment platelet reactivity (HTPR) on clopidogrel and its clinical implications have been frequently discussed. Although it has been previously assumed that HTPR is a phenomenon occurring only in patients treated with clopidogrel, recent data show that HTPR might also occur during treatment with prasugrel or ticagrelor in the acute phase of ST-elevation myocardial infarction. Moreover, it has been postulated that there is a therapeutic window for P2Y12 receptor blockers, thus indicating that HTPR is associated with thrombotic events whereas low on-treatment platelet reactivity (LTPR) is associated with bleeding events. The current paper focuses on tools to identify risk factors for HTPR (pharmacogenomic testing, clinical scoring and drug-drug interactions) and on the use of platelet function testing in order to identify patients who might not respond adequately to clopidogrel. The majority of recent clinical randomised trials have not supported the hypothesis that platelet function testing and tailored antiplatelet therapy are providing a favourable clinical outcome. These trials, mainly performed in low-to-moderate risk patients, will be reviewed and discussed. Finally, an algorithm based on current knowledge is suggested, which might be of use for design of clinical trials.
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Collet JP, Kerneis M, Hulot JS, O’Connor SA, Silvain J, Mansencal N, Brugier D, Abtan J, Barthélémy O, Vignalou JB, Payot L, Rousseau H, Vicaut E, Montalescot G. Point-of-care genetic profiling and/or platelet function testing in acute coronary syndrome. Thromb Haemost 2017; 115:382-91. [DOI: 10.1160/th15-05-0394] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 08/26/2015] [Indexed: 11/05/2022]
Abstract
SummaryOur aim was to demonstrate that the sequential use of the Verigene® rapid CYP2C19 test for genetic profiling and the VerifyNowTM bedside test for platelet function measurement in ACS patients may optimise P2Y12 inhibition. “Rapid” (CYP2C19*1/*1 or CYP2C19*17 carriers, n=211) and “slow” metabolisers (CYP2C19*2 carriers, n=58) were first put on clopidogrel and prasugrel for ≥ 2 weeks, respectively. Patients with low platelet reactivity (PRU< 30) on prasugrel or high platelet reactivity (> 208 PRU) on clopidogrel were then switched to clopidogrel and prasugrel, respectively. Our objectives were (i) to demonstrate that the proportion of “rapid” metabolisers on 75 mg of clopidogrel within 30–208 (PRU) of P2Y12 inhibition is non-inferior to “slow” metabolisers on prasugrel 10 mg and (ii) to evaluate the same end-point after switching drugs. The proportion of “rapid” and “slow” metabolisers within 30–208 PRU of P2Y12 inhibition was 71 % and 56.9 %, respectively, an absolute difference of +14.1 % (95 % CI, –0.05 % to 28.28 %) with a non-inferiority margin greater than the predefined margin of –10 %. Among patients out of target, all but one “slow” metabolisers displayed low-on prasugrel platelet reactivity while the majority of “rapid” metabolisers (68 %) displayed high-on clopidogrel platelet reactivity. After switching, the proportion of patients within 30–208 PRU of P2Y12 inhibition was 83.6 % and 79.3 % in “rapid” and “slow” metabolisers, respectively (+4.3 %, 95 % CI –7.3 % to 15.9 %). In conclusion, this study demonstrates a loose relationship between genotype and platelet function phenotype approaches but that they are complementary to select prasugrel or clopidogrel MD in stented ACS patients.
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Association of polymorphisms of platelet receptors GPIa (807C>T), GPVI (13254T>C), and P2Y12 (34C>T and H1/H2 haplotype) with increased risk of periprocedural bleeding in patients undergoing coronary angiography/percutaneous coronary intervention. Adv Cardiol 2017; 13:202-209. [PMID: 29056992 PMCID: PMC5644038 DOI: 10.5114/aic.2017.70187] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 04/19/2017] [Indexed: 01/02/2023]
Abstract
Introduction Periprocedural bleeding related to coronary angiography (CAG) or percutaneous coronary intervention (PCI) is associated with worse prognosis. Determining genetic variations associated with increased bleeding risk may help to identify high-risk patients. Aim To analyse the association between single nucleotide polymorphisms (SNPs) of crucial haemostatic platelet receptors (GPIa, GPVI, P2Y12) and the risk of periprocedural bleeding complications related to CAG/PCI. Material and methods The population consisted of 73 patients with ischaemic heart disease who developed bleeding complications within 30 days after CAG/PCI and 331 patients without bleeding. The frequency of SNPs of GPIa 807C/T, GPVI 13254T/C, P2Y12 32C/T, and P2Y12 H1/H2 haplotype was analysed using polymerase chain reaction (PCR) hybridization methods. Results The prevalence of variant alleles GPIa 807T, GPVI 13254C, P2Y12 34T, and P2Y12 H2 haplotype in the total study population was 56.7%, 20.3%, 56.2%, and 24.3%, respectively. The presence of variant alleles was not related to increased risk of periprocedural bleeding: GPIa 807C/T (OR = 1.29, 95% CI: 0.75–2.24, p = 0.334), GPVI 12354T/C (OR = 0.82, 95% CI: 0.40–1.64, p = 0.551), P2Y12 34C/T (OR = 0.71, 95% CI: 0.42–1.22, p = 0.189), P2Y12 H1/H2 haplotype (OR = 0.69, 95% CI: 0.35–1.36, p = 0.258). The frequency of the homozygous form of P2Y12 H2 haplotype was higher in the group of patients who developed bleeding (OR = 2.79, 95% CI: 0.51–13.77, p = 0.161). Conclusions No significant association of the SNPs of GPIa 807C/T, GPVI 13254T/C, P2Y12 32C/T, and P2Y12 H1/H2 haplotype with increased risk of periprocedural bleeding was found in patients with ischaemic heart disease undergoing CAG/PCI.
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Huang B, Cui DJ, Ren Y, Han B, Yang DP, Zhao X. Effect of cytochrome P450 2C19*17 allelic variant on cardiovascular and cerebrovascular outcomes in clopidogrel-treated patients: A systematic review and meta-analysis. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2017; 22:109. [PMID: 29026425 PMCID: PMC5629834 DOI: 10.4103/jrms.jrms_590_16] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 05/10/2017] [Accepted: 08/03/2017] [Indexed: 12/01/2022]
Abstract
Background: We aimed to evaluate the associations of gain-of-function allele of CYP2C19*17 and risk of clinical events in clopidogrel-treated patients with cardiovascular and cerebrovascular diseases (CCVDs). Materials and Methods: Literature search was conducted in PubMed, EMBASE, and Cochrane Library. Odds ratio (OR) combined with 95% confidence interval (CI) was the pooled statistics. Subgroup analysis was performed by disease type, bleeding events, and race. Results: Thirteen eligible studies involving 14,239 patients with CYP2C19*17 carriers or noncarriers were included in the meta-analysis. CYP2C19*17 was significantly related to decreased risk of major adverse cardiovascular and cerebrovascular events (MACCEs) in patients with coronary artery disease (CAD) (OR = 0.76, 95% CI: 0.60–0.98, P = 0.03), however, irrelevant with stent thrombosis in neither CAD nor ischemic heart disease patients. CYP2C19*17 was also significantly linked to decreased risk of high platelet reactivity (HPR) in CCVD patients (OR = 0.61, 95% CI: 0.43–0.88, P = 0.008). Meanwhile, CYP2C19*17 was significantly associated with bleeding risk in CCVD patients (OR = 1.89, 95% CI: 1.09–3.25, P = 0.02) but not related to major bleeding risk (OR = 1.35, 95% CI: 0.87–2.08, P = 0.18). Several outcomes in Caucasian subgroup were reverse to the overall results, such as bleeding events and HPR, which lacked significance. Conclusion: CYP2C19*17 had a significant effect on the reduced risks of MACCE and HPR as well as increased bleeding risk, but not on the risks of stent thrombosis and major bleeding in clopidogrel-treated CCVD patients. Outcomes might be different in different races.
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Affiliation(s)
- Bo Huang
- Department of Gastroenterology, The Affiliated People's Hospital of Guizhou Medical University, Guizhou Province, PR China
| | - De-Jun Cui
- Department of Gastroenterology, The Affiliated People's Hospital of Guizhou Medical University, Guizhou Province, PR China
| | - Ying Ren
- Department of Internal Medicine, Guizhou Provincial Traffic Hospital, Guizhou Province, PR China
| | - Bin Han
- Department of Gastroenterology, The Affiliated People's Hospital of Guizhou Medical University, Guizhou Province, PR China
| | - Da-Ping Yang
- Department of Gastroenterology, The Affiliated People's Hospital of Guizhou Medical University, Guizhou Province, PR China
| | - Xun Zhao
- Department of Gastroenterology, The Affiliated People's Hospital of Guizhou Medical University, Guizhou Province, PR China
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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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Pharmacokinetic and Pharmacodynamic Responses to Clopidogrel: Evidences and Perspectives. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14030301. [PMID: 28335443 PMCID: PMC5369137 DOI: 10.3390/ijerph14030301] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/02/2017] [Accepted: 03/07/2017] [Indexed: 12/15/2022]
Abstract
Clopidogrel has significantly reduced the incidence of recurrent atherothrombotic events in patients with acute coronary syndrome (ACS) and in those undergoing percutaneous coronary intervention (PCI). However, recurrence events still remain, which may be partly due to inadequate platelet inhibition by standard clopidogrel therapy. Genetic polymorphisms involved in clopidogrel’s absorption, metabolism, and the P2Y12 receptor may interfere with its antiplatelet activity. Recent evidence indicated that epigenetic modification may also affect clopidogrel response. In addition, non-genetic factors such as demographics, disease complications, and drug-drug interactions can impair the antiplatelet effect of clopidogrel. The identification of factors contributing to the variation in clopidogrel response is needed to improve platelet inhibition and to reduce risk for cardiovascular events. This review encompasses the most recent updates on factors influencing pharmacokinetic and pharmacodynamic responses to clopidogrel.
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Di Minno G, Tremoli E. Tailoring of medical treatment: hemostasis and thrombosis towards precision medicine. Haematologica 2017; 102:411-418. [PMID: 28250003 DOI: 10.3324/haematol.2016.156000] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Giovanni Di Minno
- Clinica Medica, Dipartimento di Medicina Clinica e Chirurgia, Università degli Studi di Napoli "Federico II", Naples, Italy
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30
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Winter MP, Grove EL, De Caterina R, Gorog DA, Ahrens I, Geisler T, Gurbel PA, Tantry U, Navarese EP, Siller-Matula JM. Advocating cardiovascular precision medicine with P2Y12 receptor inhibitors. EUROPEAN HEART JOURNAL. CARDIOVASCULAR PHARMACOTHERAPY 2017; 3:221-234. [DOI: 10.1093/ehjcvp/pvw044] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 12/30/2016] [Indexed: 12/13/2022]
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Sarma A, O'Donoghue ML. Conundrums of Platelet Function Testing: Does Sex Matter? Circ Cardiovasc Interv 2017; 10:CIRCINTERVENTIONS.117.004872. [PMID: 28193680 DOI: 10.1161/circinterventions.117.004872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Amy Sarma
- From the Cardiovascular Division, Massachusetts General Hospital, Boston (A.S.); and TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital, Boston, MA (M.L.O.)
| | - Michelle L O'Donoghue
- From the Cardiovascular Division, Massachusetts General Hospital, Boston (A.S.); and TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital, Boston, MA (M.L.O.).
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32
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Cornel JH, Ohman EM, Neely B, Jakubowski JA, Bhatt DL, White HD, Ardissino D, Fox KAA, Prabhakaran D, Armstrong PW, Erlinge D, Tantry US, Gurbel PA, Roe MT. Relationship of Platelet Reactivity With Bleeding Outcomes During Long-Term Treatment With Dual Antiplatelet Therapy for Medically Managed Patients With Non-ST-Segment Elevation Acute Coronary Syndromes. J Am Heart Assoc 2016; 5:e003977. [PMID: 27815268 PMCID: PMC5210327 DOI: 10.1161/jaha.116.003977] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 09/30/2016] [Indexed: 11/27/2022]
Abstract
BACKGROUND The relationship between "on-treatment" low platelet reactivity and longitudinal risks of major bleeding dual antiplatelet therapy following acute coronary syndromes remains uncertain, especially for patients who do not undergo percutaneous coronary intervention. METHODS AND RESULTS We analyzed 2428 medically managed acute coronary syndromes patients from the Targeted Platelet Inhibition to Clarify the Optimal Strategy to Medically Manage Acute Coronary Syndromes (TRILOGY ACS) trial who had serial platelet reactivity measurements (P2Y12 reaction units; PRUs) and were randomized to aspirin+prasugrel versus aspirin+clopidogrel for up to 30 months. Contal's method was used to determine whether a cut point for steady-state PRU values could distinguish high versus low bleeding risk using 2-level composites: Global Use of Strategies to Open Occluded Coronary Arteries (GUSTO) severe/life-threatening or moderate bleeding unrelated to coronary artery bypass grafting (CABG) and non-CABG Thrombolysis In Myocardial Infarction (TIMI) major or minor bleeding. Exploratory analyses used 3-level composites that incorporated mild and minimal GUSTO and TIMI events. Continuous measures of PRUs (per 10-unit decrease) were not independently associated with the 2-level GUSTO (adjusted hazard ratio [HR], 1.01; 95% CI, 0.96-1.06) or TIMI composites (1.02; 0.98-1.07). Furthermore, no PRU cut point could significantly distinguish bleeding risk using the 2-level composites. However, the PRU cut point of 75 differentiated bleeding risk with the 3-level composites of GUSTO (26.5% vs 12.6%; adjusted HR, 2.28; 95% CI, 1.77-2.94; P<0.001) and TIMI bleeding events (25.9% vs 12.2%; adjusted HR, 2.30; 95% CI, 1.78-2.97; P<0.001). CONCLUSIONS Among medically managed non-ST-segment elevation acute coronary syndromes patients receiving prolonged dual antiplatelet therapy, PRU values were not significantly associated with the long-term risk of major bleeding events, suggesting that low on-treatment platelet reactivity does not independently predict serious bleeding risk. CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov. Unique identifier: NCT00699998.
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Affiliation(s)
- Jan H Cornel
- Medisch Centrum Alkmaar, Alkmaar, The Netherlands
| | - E Magnus Ohman
- Duke Clinical Research Institute, Durham, NC
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC
| | | | | | - Deepak L Bhatt
- Brigham and Women's Hospital Heart & Vascular Center and Harvard Medical School, Boston, MA
| | - Harvey D White
- Green Lane Cardiovascular Service, Auckland City Hospital, Auckland, New Zealand
| | - Diego Ardissino
- Division of Cardiology, Azienda Ospedaliero-Universitaria di Parma, Italy
| | - Keith A A Fox
- Centre for Cardiovascular Science, University of Edinburgh, Scotland, UK
| | - Dorairaj Prabhakaran
- Centre for Chronic Disease Control and Public Health Foundation of India, New Delhi, India
| | - Paul W Armstrong
- Canadian VIGOUR Centre and Division of Cardiology, University of Alberta, Edmonton, Alberta, Canada
| | - David Erlinge
- Department of Cardiology, Lund University, Lund, Sweden
| | | | | | - Matthew T Roe
- Duke Clinical Research Institute, Durham, NC
- Division of Cardiology, Department of Medicine, Duke University Medical Center, Durham, NC
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Singh M, Bhatt DL, Stone GW, Rihal CS, Gersh BJ, Lennon RJ, Narula J, Fuster V. Antithrombotic Approaches in Acute Coronary Syndromes: Optimizing Benefit vs Bleeding Risks. Mayo Clin Proc 2016; 91:1413-1447. [PMID: 27712639 DOI: 10.1016/j.mayocp.2016.06.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/14/2016] [Accepted: 06/23/2016] [Indexed: 01/06/2023]
Abstract
It is estimated that in the United States, each year, approximately 620,000 persons will experience an acute coronary syndrome and approximately 70% of these will have non-ST-elevation acute coronary syndrome. Cardiovascular disease still accounts for 1 of every 3 deaths in the United States, and there is an urgent need to improve the prognosis of patients presenting with acute coronary syndrome. Cardiovascular mortality and ischemic complications are common after acute coronary syndrome, and the advent of newer antithrombotic therapies has reduced ischemic complications, but at the expense of greater bleeding. The new antithrombotic agents also raise the challenge of choosing between multiple potential therapeutic combinations to minimize recurrent ischemia without a concomitant increase in bleeding, a decision that often varies according to an individual patient's relative propensity for ischemia versus hemorrhage. In this review, we will synthesize the available information to arm health care providers with the contemporary knowledge on antithrombotic therapy and individualize treatment decisions.
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Affiliation(s)
- Mandeep Singh
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN.
| | - Deepak L Bhatt
- Brigham and Women's Hospital Heart & Vascular Center and Harvard Medical School, Boston, MA
| | - Gregg W Stone
- Columbia University Medical Center, New York Presbyterian Hospital, and the Cardiovascular Research Foundation, New York, NY
| | | | - Bernard J Gersh
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN
| | - Ryan J Lennon
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, MN
| | - Jagat Narula
- Icahn School of Medicine at Mount Sinai, New York, NY
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Díaz-Villamarín X, Dávila-Fajardo CL, Martínez-González LJ, Carmona-Sáez P, Sánchez-Ramos J, Álvarez Cubero MJ, Salmerón-Febres LM, Cabeza Barrera J, Fernández-Quesada F. Genetic polymorphisms influence on the response to clopidogrel in peripheral artery disease patients following percutaneous transluminal angioplasty. Pharmacogenomics 2016; 17:1327-38. [PMID: 27464309 DOI: 10.2217/pgs-2016-0056] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
AIM To study the association of ABCB1 and CYP2C19 polymorphisms and the clopidogrel response in Spanish peripheral artery disease patients following percutaneous transluminal angioplasty (PTA) and to perform a meta-analysis. MATERIALS & METHODS 72 patients were recruited and 122 patients included in the meta-analysis. We evaluated the effect of ABCB1 3435 C>T, CYP2C19*2 and CYP2C19*3 and primary end point (restenosis/occlusion of the treated lesions) during 12 months after PTA. RESULTS CYP2C19*2 and/or ABCB1 TT patients were associated with primary end point (OR: 5.00; 95% CI: 1.75-14.27). The meta-analysis confirmed the association of CYP2C19*2 and new atherothrombotic ischemic events (OR: 5.40; 95% CI: 2.30-12.70). CONCLUSION The CYP2C19 and ABCB1 polymorphisms could be genetic markers of cardiovascular events in peripheral artery disease patients following PTA treated with clopidogrel.
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Affiliation(s)
- Xando Díaz-Villamarín
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain
| | - Cristina Lucía Dávila-Fajardo
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain
| | - Luis Javier Martínez-González
- Genomics Unit, Centre for Genomics & Oncological Research (GENYO), Pfizer University of Granada-Andalusian Regional Government, Health Sciences Technology Park, Granada, Spain
| | - Pedro Carmona-Sáez
- Bioinformatics Unit, Centre for Genomics & Oncological Research (GENYO), Pfizer University of Granada-Andalusian Regional Government, Health Sciences Technology Park, Granada, Spain
| | - Jesús Sánchez-Ramos
- Department of Cardiology, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain
| | - María Jesús Álvarez Cubero
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain.,Genomics Unit, Centre for Genomics & Oncological Research (GENYO), Pfizer University of Granada-Andalusian Regional Government, Health Sciences Technology Park, Granada, Spain
| | - Luis Miguel Salmerón-Febres
- Department of Vascular Surgery, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain
| | - Jose Cabeza Barrera
- Department of Clinical Pharmacy, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain
| | - Fidel Fernández-Quesada
- Department of Vascular Surgery, San Cecilio University Hospital, Institute for Biomedical Research, ibs.GRANADA, Spain
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Wang H, Wang X. Efficacy and safety outcomes of ticagrelor compared with clopidogrel in elderly Chinese patients with acute coronary syndrome. Ther Clin Risk Manag 2016; 12:1101-5. [PMID: 27471389 PMCID: PMC4948739 DOI: 10.2147/tcrm.s108965] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Objective This study was designed to investigate the efficacy and safety outcomes of ticagrelor in comparison with clopidogrel on a background of aspirin in elderly Chinese patients with acute coronary syndrome (ACS). Patients and methods A double-blinded, randomized controlled study was conducted, and 200 patients older than 65 years with the diagnosis of ACS were assigned 1:1 to take ticagrelor or clopidogrel. The course of treatment was required to continue for 12 months. Results The median age of the whole cohort was 79 years (range: 65–93 years), and females accounted for 32.5% (65 patients). Baseline characteristics and clinical diagnosis had no significant difference between patients taking ticagrelor and clopidogrel; they were also balanced with respect to other treatments (P>0.05 for all). The risk of cardiovascular death was significantly lower in patients taking ticagrelor compared with clopidogrel, as was the risk of myocardial infarction (P<0.05 for all); there was no difference in the risk of stroke (P>0.05). Ticagrelor was more effective than clopidogrel in decreasing the primary efficacy end point (cardiovascular death, myocardial infarction, and stroke, P<0.05). The all-cause mortality was not significantly different between patients taking ticagrelor and clopidogrel (P>0.05). The difference in the risk of bleeding, platelet inhibition and patient outcomes major bleeding (life-threatening bleeding and others), and platelet inhibition and patient outcomes minor bleeding was not evident between patients taking ticagrelor and clopidogrel (P>0.05 for all). Conclusion The current study in elderly Chinese patients with ACS demonstrated that ticagrelor reduced the primary efficacy end point at no expense of increased bleeding risk compared with clopidogrel, suggesting that ticagrelor is a suitable alternative for use in elderly Chinese patients with ACS.
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Affiliation(s)
- Huidong Wang
- Geriatric Department, The Fourth Clinical College of Harbin Medical University, Harbin
| | - Xin Wang
- Geriatric Department, Daqing Oilfield General Hospital, Daqing, Heilongjiang, People's Republic of China
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Mărginean A, Bănescu C, Moldovan V, Scridon A, Mărginean M, Bălaşa R, Maier S, Ţăruşi M, Dobreanu M. The Impact of CYP2C19 Loss-of-Function Polymorphisms, Clinical, and Demographic Variables on Platelet Response to Clopidogrel Evaluated Using Impedance Aggregometry. Clin Appl Thromb Hemost 2016; 23:255-265. [PMID: 26873108 DOI: 10.1177/1076029616629211] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Clopidogrel is an antiplatelet drug widely used in patients with acute coronary syndromes or stroke. Despite adequate antiplatelet therapy, some patients develop acute ischemic events. This is partly attributed to the fact that they have poor inhibition of platelet reactivity, despite treatment. This study aimed to assess the impact of clinical and demographic variables and of cytochrome P450 2C19 (CYP2C19) loss-of-function polymorphisms on platelet response to clopidogrel evaluated using impedance aggregometry in an East European population. METHODS The study included 189 clopidogrel-treated patients with acute coronary syndromes and noncardiogenic ischemic stroke. Platelet aggregation was evaluated by impedance aggregometry. CYP2C19 loss-of-function polymorphisms were detected using the polymerase chain reaction restriction fragment length polymorphism technique. Various clinical and demographic data were also recorded. RESULTS In our data set, 81% of the patients were responders and 19% nonresponders to clopidogrel therapy. The distribution of CYP2C19 polymorphisms was as follows: 61.1% of patients were CYP2C19 wild-type homozygotes, 27.7% of patients were CYP2C19*2 heterozygotes, 1.1% of patients were CYP2C19*3 heterozygotes, and 10% of patients were CYP2C19*2 homozygotes. The highest level of association with clopidogrel response status was found for CYP2C19 polymorphisms, concomitant aspirin treatment, leukocyte and platelet count, history of myocardial infarction, arterial hypertension, and ward where patients were admitted. CONCLUSION The prevalence of clopidogrel resistance in our East European population was in line with that reported for Western populations. Clopidogrel response was significantly influenced by the presence of CYP2C19 polymorphisms. Interestingly, the concomitant use of aspirin had a significant impact on platelet response to clopidogrel, indicating a synergic interaction between these drugs.
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Affiliation(s)
- Alina Mărginean
- 1 Department of Laboratory Medicine, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Claudia Bănescu
- 2 Departament of Medical Genetics, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Valeriu Moldovan
- 2 Departament of Medical Genetics, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Alina Scridon
- 3 Departament of Physiology, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Mihai Mărginean
- 4 University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Rodica Bălaşa
- 5 Departament of Neurology, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Smaranda Maier
- 5 Departament of Neurology, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Mariana Ţăruşi
- 6 Emergency Institute for Cardiovascular Diseases and Transplantation Tîrgu Mureş, Tîrgu Mureş, Romania
| | - Minodora Dobreanu
- 1 Department of Laboratory Medicine, University of Medicine and Pharmacy Tîrgu Mureş, Tîrgu Mureş, Romania
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Zhang M, Liu X, Wang L, Wang Y, Ju L, Li J. Cigarette smoking might weaken the prognostic significance of cytochrome P450 2C19*2 polymorphism in acute myocardial infarction patients. J Cell Mol Med 2016; 20:1247-54. [PMID: 27072325 PMCID: PMC4929295 DOI: 10.1111/jcmm.12797] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2015] [Accepted: 12/22/2015] [Indexed: 01/10/2023] Open
Abstract
Prognostic significance of cytochrome P450 2C19*2 polymorphism in acute myocardial infarction is still not well investigated. The aim of the study was to determine the relationship between the genetic polymorphism and the outcome of the acute myocardial infarction patients, and to further clarify the impact of smoking on such relationship. Six hundred acute myocardial infarction patients were enrolled. All of them provided blood samples and underwent clopidogrel treatment. The genetic polymorphism was determined by polymerase chain reaction–restriction fragment length polymorphism analysis, and the platelet function was assessed using conventional aggregometry. Of the included patients, 287 carried GG wild‐type genotypes, 225 carried GA genotypes and 88 carried AA genotypes. The platelet aggregation rate was significantly elevated in the AA genotype patients, mainly in the non‐smoking patients (P < 0.001) and the former‐smoking patients (P < 0.001). During 5‐year follow‐up period, after adjusted for multiple confounding factors, AA genotypes were associated with the increase in 5‐year mortalities in the non‐smoking patients [OR: 7.06, 95% confidence interval (CI): 2.16–11.49] and the former‐smoking patients (OR: 4.38, 95% CI: 1.05–9.40), but not in the current‐smoking patients (OR: 1.12, 95% CI: 0.60–2.31). In conclusion, the study suggested a potential role of P450 2C19*2 polymorphism as a prognostic indicator in acute myocardial infarction patients. We had also obtained some evidence that current smoking might weaken the prognostic significance of the genetic polymorphism in patients.
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Affiliation(s)
- Mingyu Zhang
- Department of Cardiology, The 4th Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Xiaoxia Liu
- Department of Cardiology, The 4th Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Lei Wang
- Harbin Red Cross Hospital, Harbin, Heilongjiang Province, China
| | - Yan Wang
- Department of Cardiology, The 4th Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Li Ju
- Department of Cardiology, The 4th Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Jianfei Li
- Department of Cardiology, The 4th Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
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Komosa A, Siller-Matula J, Lesiak M, Michalak M, Kowal J, Mączyński M, Siniawski A, Mularek-Kubzdela T, Wiśniewski S, Grajek S. Association between high on-treatment platelet reactivity and occurrence of cerebral ischemic events in patients undergoing percutaneous coronary intervention. Thromb Res 2016; 138:49-54. [DOI: 10.1016/j.thromres.2015.12.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 11/25/2015] [Accepted: 12/23/2015] [Indexed: 11/16/2022]
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Gallego-Fabrega C, Krupinski J, Fernandez-Cadenas I. La resistencia en el tratamiento secundario del ictus isquémico, el componente genético en la respuesta a ácido acetilsalicílico y clopidogrel. Neurologia 2015; 30:566-73. [DOI: 10.1016/j.nrl.2013.11.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/20/2013] [Accepted: 11/28/2013] [Indexed: 02/08/2023] Open
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Drug resistance and secondary treatment of ischaemic stroke: The genetic component of the response to acetylsalicylic acid and clopidogrel. NEUROLOGÍA (ENGLISH EDITION) 2015. [DOI: 10.1016/j.nrleng.2013.11.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Genetic and platelet function testing of antiplatelet therapy for percutaneous coronary intervention: the ARCTIC-GENE study. Eur J Clin Pharmacol 2015; 71:1315-24. [DOI: 10.1007/s00228-015-1917-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 07/24/2015] [Indexed: 01/17/2023]
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Clopidogrel response variability is associated with endothelial dysfunction in coronary artery disease patients receiving dual antiplatelet therapy. Atherosclerosis 2015; 242:102-8. [PMID: 26188531 DOI: 10.1016/j.atherosclerosis.2015.07.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 07/03/2015] [Accepted: 07/03/2015] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Dual antiplatelet therapy with aspirin and a platelet P2Y12 ADP receptor antagonist is the cornerstone of treatment following percutaneous coronary intervention (PCI). Several clinical and genetic factors can cause suboptimal clopidogrel response. We examined the impact of endothelial dysfunction on clopidogrel response variability in subjects with stable coronary artery disease (CAD) after PCI. METHODS We consecutively enrolled 198 patients with stable CAD one month after successful PCI. All patients were receiving dual antiplatelet therapy (clopidogrel 75 mg and aspirin 100 mg/day). Platelet reactivity was measured by VerifyNow P2Y12 assay (Accumetrics, San Diego, CA). VerifyNow reports its results in P2Y12 reaction units (PRU) and the diagnostic cut-off value is 230. Endothelial function was evaluated by flow mediated dilation (FMD). RESULTS Patients with high on treatment platelet reactivity (32% of the study population), compared to subjects with low on treatment platelet reactivity, presented decreased FMD values (4.35 ± 2.22% vs. 5.74 ± 3.29%, p = 0.01). Moreover, an inverse association between endothelial function measurement and platelet reactivity (r = -0.24, p = 0.001) was found. Importantly, multivariate analysis after adjustment for age, gender and confounders revealed by the univariate analysis (left ventricle ejection fraction, body mass index, diabetes, dyslipidemia, coronary lesion number) showed that for every decrease in FMD by 1% there is an anticipated increased in the odds of patients to have HPR by 1.66 (95% CI 1.03-2.57, p = 0.037). CONCLUSIONS Endothelial dysfunction is associated with clopidogrel response variability in patients after PCI receiving dual antiplatelet therapy. These findings shed some light on the mechanisms affecting individual platelet response to antiplatelet therapy and may explain the non-straight forward association between clopidogrel dose, platelet inhibition and cardiovascular outcome.
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Cytochrome P450 CYP 2C19*2 Associated with Adverse 1-Year Cardiovascular Events in Patients with Acute Coronary Syndrome. PLoS One 2015; 10:e0132561. [PMID: 26147597 PMCID: PMC4493116 DOI: 10.1371/journal.pone.0132561] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 06/16/2015] [Indexed: 11/19/2022] Open
Abstract
Background The cytochrome P450 (CYP450) 2C19 681 genotypes affect the antiplatelet activity of clopidogrel. We investigated the correlation of CYP 2C19 681G > A mutation with clopidogrel resistance (CR). Additionally, we studied the effect of CR on clinical prognosis of patients with acute coronary syndrome (ACS). Methods One hundred ten ACS patients undergoing percutaneous coronary intervention, who were followed-up for 1 year, were included in the study. The patients were co-administered aspirin 100 mg/d and clopidogrel 75mg/d following a loading dose of 300 mg. CR was assessed on the basis of polymorphism observed in the CYP2C19 subgroup. Results Patients in GG genotype group exhibited greater inhibition of platelet aggregation than patients in GA and AA genotype groups (16.2 ± 10.1%; 10.2 ± 9.9%; 8.0 ± 5.9%, respectively, p < 0.01). CYP2C19 681GG genotype group was associated with lower CR than CYP2C19 681A allele (GA + AA) group (9/59 vs. (12+5)/51; p = 0.009). Over a follow-up of 12 months, the incidence of recurrent angina, acute myocardial infarction, and intra-stent thrombosis in CYP2C19 681 GG carriers was significantly lower than that in CYP2C19 681A allele (GA + AA) group (2/59 vs. 8/51, 1/59 vs. 6/51, 0 vs. 4/51, respectively, p < 0.05). Conclusion CYP 2C19*2 is associated with reduced clopidogrel antiplatelet activity and might be an important marker for poor prognosis of ACS.
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Ticagrelor versus clopidogrel in Asian patients with acute coronary syndrome: A retrospective analysis from the Platelet Inhibition and Patient Outcomes (PLATO) Trial. Am Heart J 2015; 169:899-905.e1. [PMID: 26027629 DOI: 10.1016/j.ahj.2015.03.015] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 03/18/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND In the PLATO trial, ticagrelor was superior to clopidogrel in reducing cardiovascular events among patients with acute coronary syndrome (ACS) at the expense of increased nonfatal bleeding. Because Asian patients, when compared with non-Asian patients, are believed to be more susceptible to bleeding, we evaluated the effects of ticagrelor compared with clopidogrel in Asian (n=1,106) and non-Asian (n=17,515) patients with acute coronary syndrome enrolled in the PLATO study. METHODS AND RESULTS Interaction between Asian/non-Asian and primary efficacy end point (a composite of vascular death, myocardial infarction, and stroke) and net clinical benefit (composite of primary efficacy end point and coronary artery bypass graft [CABG] surgery or non-CABG-related major bleeding) were evaluated with a Cox proportional hazards model. Baseline demographics and comorbidities were different between Asians and non-Asians. The overall cardiovascular event rates were higher in Asians, but bleeding rates were similar. Despite these observed differences, the effects of ticagrelor versus clopidogrel were not significantly different between Asians and non-Asians with respect to the primary efficacy outcome (hazard ratio for Asians vs non-Asians, 0.84 [95% CI 0.61-1.17] vs 0.85 [95% CI 0.77-0.93], P=.974), net clinical benefit (0.85 [95% CI 0.65-1.11] vs 0.93 [95% CI 0.86-0.99], P=.521), or individual efficacy end points. There was no significant interaction for bleeding (PLATO major bleeding, 1.02 [95% CI 0.70-1.49] vs 1.04 [95% CI 0.95-1.14], P=.938) and other related adverse events with ticagrelor compared with clopidogrel between Asians and non-Asians. CONCLUSIONS We observed consistency of effects in Asian patients receiving ticagrelor and clopidogrel in the PLATO study. The relatively modest number of Asian patients in this analysis supports further investigation of larger cohorts to confirm our observations.
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Yasmina A, de Boer A, Klungel OH, Deneer VHM. Pharmacogenomics of oral antiplatelet drugs. Pharmacogenomics 2015; 15:509-28. [PMID: 24624918 DOI: 10.2217/pgs.14.16] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Pharmacogenomics has been implicated in the response variability of antiplatelet drugs in coronary artery disease (CAD), particularly for aspirin and clopidogrel. A large number of studies and several meta-analyses have been published on this topic, but until recently, there have been no clear conclusions and no definite guidelines on the clinical use of pharmacogenetic testing before prescribing antiplatelet drugs for CAD. In this review, the available evidence is summarized. The most consistent results are on clopidogrel, where CYP2C19 loss-of-function alleles are associated with stent thrombosis events. We recommend to genotype for CYP2C19 loss-of-function alleles in patients with CAD who are to undergo percutaneous coronary intervention and stenting, and to adjust the antiplatelet treatment based on the genotyping results.
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Affiliation(s)
- Alfi Yasmina
- Division of Pharmacoepidemiology & Clinical Pharmacology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
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Niu X, Mao L, Huang Y, Baral S, Li JY, Gao Y, Xia YP, He QW, Wang MD, Li M, Zou L, Miao XP, Hu B. CYP2C19 polymorphism and clinical outcomes among patients of different races treated with clopidogrel: A systematic review and meta-analysis. ACTA ACUST UNITED AC 2015; 35:147-156. [DOI: 10.1007/s11596-015-1404-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 01/15/2015] [Indexed: 11/29/2022]
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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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Quatromoni N, Tuteja S, Kolansky DM, Matthai WH, Giri J. Novel Anti-platelet Agents in Acute Coronary Syndrome: Mechanisms of Action and Opportunities to Tailor Therapy. Curr Atheroscler Rep 2015; 17:501. [DOI: 10.1007/s11883-015-0501-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Personalized antiplatelet therapy with P2Y12 receptor inhibitors: benefits and pitfalls. ADVANCES IN INTERVENTIONAL CARDIOLOGY 2015; 11:259-80. [PMID: 26677375 PMCID: PMC4679793 DOI: 10.5114/pwki.2015.55596] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 11/05/2015] [Accepted: 11/05/2015] [Indexed: 02/07/2023] Open
Abstract
Antiplatelet therapy with P2Y12 receptor inhibitors has become the cornerstone of medical treatment in patients with acute coronary syndrome, after percutaneous coronary intervention and in secondary prevention of atherothrombotic events. Clopidogrel used to be the most broadly prescribed P2Y12 receptor inhibitor with undisputable benefits especially in combination with aspirin, but a considerable number of clopidogrel-treated patients experience adverse thrombotic events in whom insufficient P2Y12-inhibition and a consequential high on-treatment platelet reactivity is a common finding. This clinically relevant limitation of clopidogrel has driven the increased use of new antiplatelet agents. Prasugrel (a third generation thienopyridine) and ticagrelor (a cyclopentyl-triazolo-pyrimidine) feature more potent and predictable P2Y12-inhibition compared to clopidogrel, which translates into improved ischemic outcomes. However, excessive platelet inhibition and consequential low on-treatment platelet reactivity comes at the price of increased risk of major bleeding. The majority of randomized clinical trials failed to demonstrate improved clinical outcomes with platelet function testing and tailored antiplatelet therapy, but results of all recent trials of potent antiplatelets and prolonged antiplatelet durations point towards a need for individualized antiplatelet approach in order to decrease thrombotic events without increasing bleeding. This review focuses on potential strategies for personalizing antiplatelet treatment.
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Sabatine MS, Mega JL. Pharmacogenomics of antiplatelet drugs. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2014; 2014:343-347. [PMID: 25696877 DOI: 10.1182/asheducation-2014.1.343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Clopidogrel, a platelet P2Y12 inhibitor, is one of the most widely prescribed drugs in cardiovascular medicine because it reduces ischemic and thrombotic complications. It is a prodrug requiring biotransformation into the active metabolite by the hepatic cytochrome 450 system, especially the CYP2C19 enzyme. Candidate gene studies and genome-wide association studies have identified loss-of-function CYP2C19 variants to be associated with a diminished pharmacologic response. Specifically, compared with noncarriers, carriers of at least one copy of a loss-of-function CYP2C19 allele have ∼30% lower levels of active clopidogrel metabolite and ∼25% relatively less platelet inhibition with clopidogrel. Moreover, in patients treated with clopidogrel predominantly for percutaneous coronary intervention, carriers of 1 or 2 CYP2C19 loss-of-function alleles are at increased risk for major adverse cardiovascular outcomes, with an ∼1.5-fold increase in the risk of cardiovascular death, myocardial infarction, or stroke as well as an ∼3-fold increase in risk for stent thrombosis. Tripling the dose of clopidogrel in carriers of a CYP2C19 loss-of-function allele can achieve on-treatment platelet reactivity comparable to that seen with the standard 75 mg dose in wild-type individuals, but the impact on clinical outcomes remains unknown. Alternatively, 2 third-generation P2Y12 inhibitors are available: prasugrel and ticagrelor. These drugs are superior to clopidogrel in reducing ischemic outcomes and are unaffected by CYP2C19 loss-of-function alleles.
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Affiliation(s)
- Marc S Sabatine
- TIMI Study Group, Division of Cardiovascular Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Jessica L Mega
- TIMI Study Group, Division of Cardiovascular Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
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