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Updated: May 9, 2026

An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
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New York State TrueAllele ® casework validation study.

Mark W Perlin1, Jamie L Belrose, Barry W Duceman

  • 1Cybergenetics Corp, 160 North Craig Street, Suite 210, Pittsburgh, PA, 15213.

Journal of Forensic Sciences
|July 20, 2013
PubMed
Summary
This summary is machine-generated.

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Probabilistic genotyping software reliably interprets complex DNA evidence, including low-level and mixed samples. This objective approach ensures accurate and reproducible DNA match results, preserving crucial identification information.

Area of Science:

  • Forensic Science
  • Genetics
  • Computational Biology

Background:

  • DNA evidence interpretation presents challenges, especially with low-level or mixed samples.
  • Current methods may not fully utilize quantitative data or explore all genotype possibilities.
  • Objective and reproducible DNA match results are highly desirable in forensic analysis.

Purpose of the Study:

  • To validate the TrueAllele® probabilistic genotyping computer interpretation system.
  • To compare computer-generated results with human review for accuracy and reproducibility.
  • To assess the system's ability to produce match statistics for complex DNA samples.

Main Methods:

  • Validation study involving 368 evidence items across 41 test cases.
  • Comparison of TrueAllele® probabilistic computer interpretation with human review.
Keywords:
DNA evidencedevelopmental validationforensic scienceidentification informationlikelihood ratiomixture interpretationprobabilistic genotype

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  • Analysis of concordance and match statistic generation for mixture items.

    • Main Results:

    • Computer-generated genotypes were concordant with human results whenever a human result was available.
    • The computer produced match statistics for 81 mixture items, compared to 25 by human review.
    • Probabilistic genotyping demonstrated sensitivity, specificity, and reproducibility using match statistics.

    Conclusions:

    • Objective probabilistic genotyping reliably preserves DNA identification information.
    • The TrueAllele® system offers an accurate and reproducible method for interpreting complex DNA evidence.
    • Probabilistic genotyping enhances the utilization of quantitative DNA data in forensic casework.