Recommendations of the DNA Commission of the International Society for Forensic Genetics (ISFG) on quality control of autosomal Short Tandem Repeat allele frequency databasing (STRidER)

Martin Bodner, Ingo Bastisch, John M. Butler, Rolf Fimmers, Peter Gill, Leonor Gusmão, Niels Morling, Christopher Phillips, Mechthild Prinz, Peter M. Schneider, Walther Parson*

*Corresponding author for this work
72 Citations (Scopus)

Abstract

The statistical evaluation of autosomal Short Tandem Repeat (STR) genotypes is based on allele frequencies. These are empirically determined from sets of randomly selected human samples, compiled into STR databases that have been established in the course of population genetic studies. There is currently no agreed procedure of performing quality control of STR allele frequency databases, and the reliability and accuracy of the data are largely based on the responsibility of the individual contributing research groups. It has been demonstrated with databases of haploid markers (EMPOP for mitochondrial mtDNA, and YHRD for Y-chromosomal loci) that centralized quality control and data curation is essential to minimize error. The concepts employed for quality control involve software-aided likelihood-of-genotype, phylogenetic, and population genetic checks that allow the researchers to compare novel data to established datasets and, thus, maintain the high quality required in forensic genetics. Here, we present STRidER (http://strider.online), a publicly available, centrally curated online allele frequency database and quality control platform for autosomal STRs. STRidER expands on the previously established ENFSI DNA WG STRbASE and applies standard concepts established for haploid and autosomal markers as well as novel tools to reduce error and increase the quality of autosomal STR data. The platform constitutes a significant improvement and innovation for the scientific community, offering autosomal STR data quality control and reliable STR genotype estimates.

Original languageEnglish
JournalForensic Science International: Genetics
Volume24
Pages (from-to)97-102
Number of pages6
ISSN1872-4973
DOIs
Publication statusPublished - Sept 2016

Keywords

  • Forensic genetics
  • Population data
  • Quality control
  • Short tandem repeat
  • STR database

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