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Infinium Assay for Large-scale SNP Genotyping Applications
Published on: November 19, 2013
A short-read multiplex sequencing method for reliable, cost-effective and high-throughput genotyping in large-scale
Hongzhi Cao1, Yu Wang, Wei Zhang
1BGI-Shenzhen, Shenzhen, China; Department of Biology, University of Copenhagen, Copenhagen, Denmark.
Human Mutation
|September 10, 2013
Summary
A new pipeline called RCHSBT offers reliable, cost-effective, and high-throughput genotyping. This method accurately genotypes human MHC loci using short-read sequencing, matching Sanger sequencing quality at a lower cost and higher throughput.
Area of Science:
- Genomics
- Molecular Biology
- Bioinformatics
Background:
- Accurate genotyping is crucial for genetic testing and diagnostics.
- Sanger sequencing is the gold standard but is limited by high costs and low throughput.
- Short-read sequencing offers cost-effectiveness and high throughput but faces challenges with read length and genotyping methods.
Purpose of the Study:
- To develop a reliable, cost-effective, and high-throughput sequence-based typing pipeline (RCHSBT) for genetic testing.
- To overcome the limitations of short-read sequencing for accurate genotyping.
- To enable high-throughput and affordable genotyping comparable to Sanger sequencing.
Main Methods:
- Developed RCHSBT, a novel pipeline utilizing a unique variant calling and haploid sequence assembling algorithm for short sequence reads.
- Applied RCHSBT to genotype human MHC loci (HLA-A, HLA-B, HLA-C, HLA-DQB1, HLA-DRB1) in 96 samples using Illumina PE 150 reads.
- Validated RCHSBT by comparing its genotyping results with those obtained from Sanger sequencing.
Main Results:
- RCHSBT accurately genotyped amplicons up to 950 bp, demonstrating greater effective length than Sanger sequencing reads.
- Achieved 100% concordance between RCHSBT-called genotypes and Sanger sequence-based genotypes.
- Increased genotyping throughput by over 10 times and reduced costs by over five times compared to Sanger sequencing.
Conclusions:
- RCHSBT provides a genotyping method that is comparable in quality to Sanger sequencing-based typing.
- RCHSBT significantly enhances cost-effectiveness and throughput for genetic testing.
- This pipeline holds great promise for widespread adoption in genetic testing and research.
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