Skip to main content

Pharmacogenetics

  • Chapter
  • First Online:
Diagnostic Molecular Pathology in Practice

Abstract

A 57-year-old white male presented to the emergency room with substernal chest pressure/tightness, left forearm pain, and dyspnea at rest. Two weeks prior, the patient had noted an increase in fatigue. He had a past medical history of peptic ulcer disease, hypertension, and hypercholesterolemia. Medications included enalapril for hypertension, atorvastatin for hypercholesterolemia, and omeprazole for peptic ulcer disease. The social history was significant for smoking a pack of cigarettes a day for 30 years (30 pack-years). On examination, a systolic murmur and 2+ pitting edema were appreciated. Chest X-ray revealed diffuse infiltrates and an electrocardiogram exhibited 7 mm ST elevation in the anterior leads. Laboratory results were significant for a mildly elevated white blood cell count, creatine kinase of 541 U/L (normal 70–185 U/L), CK-MB of 78.4 ng/mL (normal <6.0 ng/mL), and troponin I of 4.53 ng/mL (normal <0.034 ng/mL), consistent with myocardial infarction.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 84.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 109.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Collet JP, Hulot JS, Pena A et al (2009) Cytochrome P450 2C19 polymorphism in young patients treated with clopidogrel after myocardial infarction: a cohort study. Lancet 373:309–317

    Article  PubMed  CAS  Google Scholar 

  2. Sibbing D, Stegherr J, Latz W et al (2009) Cytochrome P450 2C19 loss-of-function polymorphism and stent thrombosis following percutaneous coronary intervention. Eur Heart J 30:916–922

    Article  PubMed  CAS  Google Scholar 

  3. Shuldiner AR, O’Connell JR, Bliden KP et al (2009) Association of cytochrome P450 2C19 genotype with the antiplatelet effect and clinical efficacy of clopidogrel therapy. JAMA 302:849–857

    Article  PubMed  CAS  PubMed Central  Google Scholar 

  4. Mega JL, Close SL, Wiviott SD et al (2009) Cytochrome P-450 polymorphisms and response to clopidogrel. N Engl J Med 360:354–362

    Article  PubMed  CAS  Google Scholar 

  5. Campo G, Fileti L, Valgimigli M et al (2010) Poor response to clopidogrel: current and future options for its management. J Thromb Thrombolysis 30:319–331

    Article  PubMed  CAS  Google Scholar 

  6. Montalescot G, Wiviott SD, Braunwald E et al (2009) TRITON-TIMI 38 investigators. Prasugrel compared with clopidogrel in patients undergoing percutaneous coronary intervention for ST-elevation myocardial infarction (TRITON-TIMI 38): double-blind, a randomised controlled trial. Lancet 373:723–731

    Article  PubMed  CAS  Google Scholar 

  7. Wiviott SD, Braunwald E, McCabe CH et al (2007) Prasugrel versus clopidogrel in patients with acute coronary syndromes. N Engl J Med 357:2001–2015

    Article  PubMed  CAS  Google Scholar 

  8. Angiolillo DJ, Shoemaker SB, Desai B et al (2007) Randomized comparison of a high clopidogrel maintenance dose in patients with diabetes mellitus and coronary artery disease: results of the Optimizing Antiplatelet Therapy in Diabetes Mellitus (OPTIMUS) study. Circulation 115:708–716

    Article  PubMed  CAS  Google Scholar 

  9. Gladding P, White H, Voss J et al (2009) Pharmacogenetic testing for clopidogrel using the rapid INFINITI analyzer: a dose-escalation study. JACC Cardiovasc Interv 2:1102–1104

    Article  Google Scholar 

  10. Simon T, Verstuyft C, Mary-Krause M et al (2009) French registry of acute ST-elevation and non-ST-elevation myocardial infarction (FAST-MI) investigators. Genetic determinants of response to clopidogrel and cardiovascular events. N Engl J Med 360:363–375

    Article  PubMed  CAS  Google Scholar 

  11. Flockhart DA (2007). Drug interactions: cytochrome P450 drug interaction table. Indiana University School of Medicine, Indianapolis. http://medicine.iupui.edu/clinpharm/ddis/table.asp. Accessed 2 July 2010

  12. Yun KH, Rhee SJ, Park HY et al (2010) Effects of omeprazole on the antiplatelet activity of clopidogrel. Int Heart J 51:13–16

    Article  PubMed  CAS  Google Scholar 

  13. Ray WA, Murray KT, Griffin MR et al (2010) Outcomes with concurrent use of clopidogrel and proton-pump inhibitors: a cohort study. Ann Intern Med 152:337–345

    Article  PubMed  PubMed Central  Google Scholar 

  14. Neubauer H, Engelhardt A, Krüger JC et al (2010) Pantoprazole does not influence the antiplatelet effect of clopidogrel - a whole blood aggregometry study following coronary stenting. J Cardiovasc Pharmacol 56(1):91–97

    Article  PubMed  CAS  Google Scholar 

  15. Ho PM, Maddox TM, Wang L et al (2009) Risk of adverse outcomes associated with concomitant use of clopidogrel and proton pump inhibitors following acute coronary syndrome. JAMA 301:937–944

    Article  PubMed  CAS  Google Scholar 

  16. Siller-Matula JM, Spiel AO, Lang IM et al (2009) Effects of pantoprazole and esomeprazole on platelet inhibition by clopidogrel. Am Heart J 157:e1–e5

    PubMed  Google Scholar 

  17. Ellis KJ, Stouffer GA, McLeod HL et al (2009) Clopidogrel pharmacogenomics and risk of inadequate platelet inhibition: US FDA recommendations. Review. Pharmacogenomics 10:1799–1817

    Article  PubMed  CAS  Google Scholar 

  18. Sibbing D, Koch W, Gebhard D et al (2010) Cytochrome 2C19*17 allelic variant, platelet aggregation, bleeding events, and stent thrombosis in clopidogrel-treated patients with coronary stent placement. Circulation 121:512–518

    Article  PubMed  CAS  Google Scholar 

  19. U.S. Food and Drug Administration update to package insert for clopidogrel bisulfate (Plavix®). http://products.sanofi-aventis.us/PLAVIX/PLAVIX.html. Accessed 2 July 2010

  20. Brandt JT, Close SL, Iturria SJ et al (2007) Common polymorphisms of CYP2C19 and CYP2C9 affect the pharmacokinetic and pharmacodynamic response to clopidogrel but not prasugrel. J Thromb Haemost 5:2429–2436

    Article  PubMed  CAS  Google Scholar 

  21. Gladding P, Webster M, Zeng I et al (2008) The antiplatelet effect of higher loading and maintenance dose regimens of clopidogrel: the PRINC (Plavix Response in Coronary Intervention) trial. JACC Cardiovasc Interv 1:612–619

    Article  PubMed  Google Scholar 

  22. Cytochrome P450 (CYP) Allele Nomenclature Committee (2010) CYP2C19 allele nomenclature. http://www.cypalleles.ki.se/cyp2c19.htm. Accessed 2 July 2010

  23. Reference SNP database. www.ncbi.nlm.nih.gov/projects/SNP. Accessed 1 July 2010

  24. Xie HG, Kim RB, Wood AJ et al (2001) Molecular basis of ethnic differences in drug disposition and response. Pharmacol Toxicol 41:815–850

    CAS  Google Scholar 

  25. Brandt JT, Payne CD, Wiviott SD et al (2007) A comparison of prasugrel and clopidogrel loading doses on platelet function: magnitude of platelet inhibition is related to active metabolite formation. Am Heart J 153:e9–e16

    PubMed  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Karen E. Weck .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2011 Springer-Verlag Berlin Heidelberg

About this chapter

Cite this chapter

Muldrew, K.L., Weck, K.E. (2011). Pharmacogenetics. In: Schrijver, I. (eds) Diagnostic Molecular Pathology in Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19677-5_10

Download citation

  • DOI: https://doi.org/10.1007/978-3-642-19677-5_10

  • Published:

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-19676-8

  • Online ISBN: 978-3-642-19677-5

  • eBook Packages: MedicineMedicine (R0)

Publish with us

Policies and ethics