High-throughput genotyping of copy number variation in Glutathione S-Transferases M1 and T1 using real-time PCR in 20,687 individuals
Characteristic for the genes encoding glutathione S-transferase (GST) M1 and GSTT1 is a null allele, suggested to increase susceptibility to chronic diseases. We report an optimized method for the determination of copy number variation (CNV) in GST genes. Real-time multiplex PCR reactions were optim...
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Veröffentlicht in: | Clinical biochemistry 2009-02, Vol.42 (3), p.201-209 |
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Sprache: | eng |
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Zusammenfassung: | Characteristic for the genes encoding glutathione S-transferase (GST) M1 and GSTT1 is a null allele, suggested to increase susceptibility to chronic diseases. We report an optimized method for the determination of copy number variation (CNV) in
GST genes.
Real-time multiplex PCR reactions were optimized for quantification of
GSTM1 and
GSTT1 CNV using the Δ
C
t method, a fixed volume of diluted DNA, a total volume of 10 μL, 384-well formats, and single determinations of each sample.
Consistent genotyping was obtained using DNA in a range of 0.41 ng to 100 ng. In a general population sample of 20,687 individuals the genotype frequencies were concordant with other methods used as standards. Throughput was 4600 genotypes per day at a reagent price of 0.5 euros per sample.
This high-throughput, low cost method accurately determines CNV in the
GST genes enabling reliable estimates of disease prediction in large epidemiological samples. |
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ISSN: | 0009-9120 1873-2933 |
DOI: | 10.1016/j.clinbiochem.2008.10.020 |