Key result
A newly developed multiplex PCR and single-base extension genotyping test for 10 clopidogrel-related genetic variants showed perfect concordance with direct DNA sequencing in 100 healthy subjects.
Why the study?
Does the developed MSSE genotyping test accurately detect genetic variants related to clopidogrel response compared to direct DNA sequencing in healthy subjects?
Does the developed MSSE genotyping test accurately detect genetic variants related to clopidogrel response compared to direct DNA sequencing in healthy subjects?
A newly developed multiplex PCR and single-base extension method provides an accurate and fast genotyping test for 10 variants related to clopidogrel response.
May facilitate clopidogrel pharmacogenomics research; leaves open clinical utility pending patient validation and outcome data.
There has been a wide range of inter-individual variations in platelet responses to clopidogrel. The variations in response to clopidogrel can be driven by genetic polymorphisms involved in the pathway of absorption, distribution, metabolism, excretion, and the target receptor P2Y12. A set of genetic variants known for causing variations in clopidogrel responses was selected, which included CYP2C19*2, *3, *17, CYP2B6*4, *6, *9, CYP3A4*18, CYP3A5*3, MDR1 2677G>T/A, 3435C>T, and P2Y12 H2 (742T>C). The simultaneous detection of these 10 variants was developed by using a multiplex PCR and single-base extension (MSSE) methodology. The newly developed genotyping test was confirmed by direct DNA sequencing in the representative positive control samples and validated in an extended set of 100 healthy Korean subjects. Genotyping results from the developed MSSE exhibited a perfect concordance with the direct DNA sequencing data and all of variants tested in 100 healthy Korean subjects were in agreement with Hardy-Weinberg equilibrium (p>0.05). The present molecular diagnostic studies provide an accurate, convenient, and fast genotyping method for the detection of multiple variants. This would be helpful for researchers, as well as clinicians, to use genetic information toward more personalized medicine of clopidogrel and other antiplatelet drugs in the future.
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Jeong et al. (2014) studied Healthy subjects (n=100). Multiplex PCR and single-base extension (MSSE) genotyping test vs. Direct DNA sequencing was evaluated on Concordance with direct DNA sequencing. A newly developed multiplex PCR and single-base extension genotyping test for 10 clopidogrel-related genetic variants showed perfect concordance with direct DNA sequencing in 100 healthy subjects.
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