Abstract
In recent years, European working groups (ENFSI-EDNAP) have strongly encouraged the development of new amplification kits that allow to obtain DNA profiles even on difficult samples (degraded samples, presence of inhibitory substances, LCN, mixtures, etc.). To enable the amplification of difficult biological samples the new loci were designed to achieve greater resistance to inhibitors and most robust and uniform amplification. With the aim of evaluating the performance of latest generation kits in real forensic caseworks the authors retested some bone samples previously analyzed in their laboratory over the past five years with the old commercial kits. The authors compared the performance of AmpF ℓSTR ® NGM™ PCR Amplification kit (Applied Biosystems) with PowerPlex ® ESX 17 systems (Promega). The twelve analyzed samples came from eight exhumed corpses and four bodies found outdoor in the advanced stage of putrefaction. For the genetic investigation the authors used a piece of bone taken from the femur. In conclusion, the authors can claim that the latest generation kits have proved to be decisive in all cases, including those where the previous use of traditional kits did not produce reliable and uniquely interpretable results.
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