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Biotech Rapid Dispatches. 2012 Apr;2012:1-6.

Short-read, high-throughput sequencing technology for STR genotyping.

BioTechniques. Rapid dispatches

Daniel M Bornman, Mark E Hester, Jared M Schuetter, Manjula D Kasoji, Angela Minard-Smith, Curt A Barden, Scott C Nelson, Gene D Godbold, Christine H Baker, Boyu Yang, Jacquelyn E Walther, Ivan E Tornes, Pearlly S Yan, Benjamin Rodriguez, Ralf Bundschuh, Michael L Dickens, Brian A Young, Seth A Faith

Affiliations

  1. Battelle Memorial Institute, Columbus, OH, USA.
  2. Battelle Memorial Institute, Charlottesville, VA, USA.
  3. Human Cancer Genetics Program, The Ohio State University Comprehensive Cancer Center, Columbus, OH, USA.
  4. Department of Physics and Biochemistry, Center for RNA Biology, The Ohio State University, Columbus, OH, USA.

PMID: 25621315 PMCID: PMC4301848

Abstract

DNA-based methods for human identification principally rely upon genotyping of short tandem repeat (STR) loci. Electrophoretic-based techniques for variable-length classification of STRs are universally utilized, but are limited in that they have relatively low throughput and do not yield nucleotide sequence information. High-throughput sequencing technology may provide a more powerful instrument for human identification, but is not currently validated for forensic casework. Here, we present a systematic method to perform high-throughput genotyping analysis of the Combined DNA Index System (CODIS) STR loci using short-read (150 bp) massively parallel sequencing technology. Open source reference alignment tools were optimized to evaluate PCR-amplified STR loci using a custom designed STR genome reference. Evaluation of this approach demonstrated that the 13 CODIS STR loci and amelogenin (AMEL) locus could be accurately called from individual and mixture samples. Sensitivity analysis showed that as few as 18,500 reads, aligned to an in silico referenced genome, were required to genotype an individual (>99% confidence) for the CODIS loci. The power of this technology was further demonstrated by identification of variant alleles containing single nucleotide polymorphisms (SNPs) and the development of quantitative measurements (reads) for resolving mixed samples.

Keywords: Bridge PCR; Illumina; SNP; STR; forensic; genotyping; high-throughput sequencing; next-generation sequencing

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