[Validation and evaluation of a five miniSTRs kit in forensic genetics]

The newly designed and optimized miniplex contains the following markers: D3S3053, D6S474, D9S2157, D20S482 and sex-determining marker - amelogenin. The target amplicon lengths for the developed multiplex are 71-135 bp. Amplification products were detected in a fluorescence based automated genetic analyzer. A minimal DNA sample required to obtain full genetic profiles was 250 pg. The usefulness of these miniSTRs in genotyping of severely degraded forensic samples, such as stains of blood and semen, saliva on cigarette butts and telogen hair has been confirmed in validation studies. The designed pentaplex offers a new potential screening tool in cases of old crime scenes, mass disasters, mass graves, etc., where DNA degradation, body fragmentation or large numbers of victims occur. The use of additional non-CODIS markers may increase typeability of severely degraded samples and ensure a higher potential for genetic discrimination.