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  • Title: Validation of the IDseek® OmniSTR™ Global Autosomal STR Profiling kit, reverse complement PCR as an improved tool/method for routine massively parallel sequencing of short tandem repeats.
    Author: van der Gaag KJ, Weiler N, de Jong EAC, Hoogenboom J, van Oers P, de Leeuw RH, Graaf ESM, Kraaijenbrink T, Theelen J, Sijen T.
    Journal: Forensic Sci Int Genet; 2025 Jan; 74():103174. PubMed ID: 39549676.
    Abstract:
    Massively Parallel Sequencing (MPS) has gained interest in the forensic community over the past decade. Most of the published MPS methods focus on specialty applications intended for use in a limited number of samples with protocols that are relatively laborious. Recent developments using Reverse-Complement PCR enable an efficient MPS protocol suited for routine analysis of high numbers of samples. This method is implemented in the IDseek® OmniSTR™ Global Autosomal STR Profiling kit (Nimagen) for sequencing 28 of the most commonly used forensic autosomal STRs, one Y-chromosomal STR and Amelogenin. This study describes the validation of this kit and focuses on sensitivity, inhibitor tolerance, sequence variation detection and performance with mixtures up to 5 contributors. Results are compared to a Capillary Electrophoresis method (the PowerPlex® Fusion 6 C system, Promega) and the first commercial forensic MPS kit (ForenSeq™ DNA Signature prep, Qiagen) and for a concordance study with data from the Powerseq® MPS kit as well. Analysis settings in FDSTools are deduced and discussed, and an almost completely automated analysis is achieved. Using FDSTools noise correction, contributions in a mixture down to a level of 1.5 % of the major allele of a marker can be detected.
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