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Cyrius: accurate CYP2D6 genotyping using whole-genome sequencing data.
Xiao Chen1, Fei Shen1, Nina Gonzaludo1
1Illumina Inc., 5200 Illumina Way, San Diego, CA, USA.
The Pharmacogenomics Journal
|January 19, 2021
Summary
A new bioinformatics tool, Cyrius, accurately genotypes the CYP2D6 gene using whole-genome sequencing data. This advances personalized medicine by improving the identification of genetic variations crucial for drug metabolism.
Area of Science:
- Genetics
- Bioinformatics
- Pharmacogenomics
Background:
- CYP2D6 is vital for metabolizing ~21% of drugs, making it key for personalized medicine.
- Genotyping CYP2D6 is difficult due to high similarity with CYP2D7 and numerous structural variants (SVs).
Purpose of the Study:
- To introduce Cyrius, a novel bioinformatics method for accurate CYP2D6 genotyping.
- To evaluate Cyrius's performance against existing methods using whole-genome sequencing (WGS) data.
Main Methods:
- Developed and applied the Cyrius bioinformatics tool.
- Utilized whole-genome sequencing (WGS) data for genotyping.
- Compared Cyrius performance against established genotyping methods.
Main Results:
- Cyrius demonstrated superior accuracy (96.5% concordance), significantly outperforming existing methods (84-86.8%).
- Post-improvement, Cyrius achieved 99.3% accuracy.
- Built a haplotype frequency database from 2504 diverse samples, revealing higher frequencies of SV-containing star alleles.
Conclusions:
- Cyrius is a highly accurate tool for CYP2D6 genotyping from WGS data.
- The findings suggest SV-containing star alleles are more common than previously thought.
- Cyrius is poised to enhance the integration of pharmacogenomics into precision medicine initiatives.
