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Routine screening for CYP2C19 polymorphisms for patients being treated with clopidogrel is not recommended.


ABSTRACT: Recent efforts directed at potential litigation in Hawai'i have resulted in a renewed interest for genetic screening for cytochrome P450 2C19 (CYP2C19) polymorphisms in patients treated with clopidogrel. Clopidogrel is an antiplatelet agent, frequently used in combination with aspirin, for the prevention of thrombotic complications with acute coronary syndrome and in patients undergoing percutaneous coronary interventions. Cytochrome P-450 (CYP) 2C19 is an enzyme involved in the bioactivation of clopidogrel from a pro-drug to an active inhibitor of platelet action. Patients of Asian and Pacific Island background have been reported to have an increase in CYP2C19 polymorphisms associated with loss-of-function of this enzyme when compared to other ethnicities. This has created an interest in genetic testing for CYP2C19 polymorphisms in Hawai'i. Based upon our review of the current literature, we do not feel that there is support for the routine screening for CYP2C19 polymorphisms in patients being treated with clopidogrel; furthermore, the results of genetic testing may not be helpful in guiding therapeutic decisions. We recommend that decisions on the type of antiplatelet treatment be made based upon clinical evidence of potential differential outcomes associated with the use of these agents rather than on the basis of genetic testing.

SUBMITTER: Bhopalwala AM 

PROVIDER: S-EPMC4300541 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature

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Routine screening for CYP2C19 polymorphisms for patients being treated with clopidogrel is not recommended.

Bhopalwala Adnan M AM   Hong Robert A RA   Khan Zia R ZR   Valentin Mona R MR   Badawi Ramy A RA  

Hawai'i journal of medicine & public health : a journal of Asia Pacific Medicine & Public Health 20150101 1


Recent efforts directed at potential litigation in Hawai'i have resulted in a renewed interest for genetic screening for cytochrome P450 2C19 (CYP2C19) polymorphisms in patients treated with clopidogrel. Clopidogrel is an antiplatelet agent, frequently used in combination with aspirin, for the prevention of thrombotic complications with acute coronary syndrome and in patients undergoing percutaneous coronary interventions. Cytochrome P-450 (CYP) 2C19 is an enzyme involved in the bioactivation of  ...[more]

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