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Updated: Jan 27, 2026
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Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing
Published on: February 10, 2023
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Comparison between MassARRAY and pyrosequencing for CYP2C19 and ABCB1 gene variants of clopidogrel efficiency
Juan Liu1, Zesheng Xu1, Ya Li1
1a Department of Cardiology , Hebei Cangzhou Central Hospital , Cangzhou , China.
Molecular Membrane Biology
|March 28, 2019
Summary
Genetic testing for clopidogrel therapy is crucial due to varying patient responses. MassARRAY genotyping is accurate and cost-effective compared to pyrosequencing for detecting CYP2C19 and ABCB1 gene variants.
Area of Science:
- Pharmacogenomics
- Clinical Chemistry
- Molecular Diagnostics
Background:
- Clopidogrel is a widely prescribed antiplatelet medication for cardiovascular event reduction.
- Individual responses to clopidogrel vary significantly due to genetic polymorphisms.
- Genetic testing is essential for optimizing clopidogrel dosage and efficacy.
Purpose of the Study:
- To compare the accuracy and efficiency of MALDI-TOF MassARRAY and pyrosequencing for detecting key clopidogrel-related gene variants.
- To determine the allele frequencies of specific single nucleotide polymorphisms (SNPs) in the CYP2C19 and ABCB1 genes within a Chinese Han population.
Main Methods:
- Genotyping of six SNPs (CYP2C19 *2, *3, *4, *5, *17, and ABCB1 C3435T) in 458 Chinese Han patients.
- Utilized both MassARRAY (MALDI-TOF mass spectrometry) and pyrosequencing platforms.
- Employed Sanger sequencing as the reference standard for verification.
Main Results:
- Both MassARRAY and pyrosequencing achieved 100% call rates for gene variants.
- MassARRAY demonstrated 100% concordance with Sanger sequencing results.
- Minor allele frequencies were calculated for each SNP, with CYP2C19*2 at 27.1% and ABCB1 C3435T at 40.9%.
Conclusions:
- MassARRAY is a highly accurate and reliable method for clopidogrel-related genotyping.
- MassARRAY offers superior cost-efficiency, throughput, and speed compared to pyrosequencing.
- These findings support the routine use of MassARRAY for pharmacogenetic testing in clopidogrel therapy.
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