The contribution of DNA databases for stored sexual crimes evidences in the Central of Brazil

Publication date: Available online 17 January 2020Source: Forensic Science International: GeneticsAuthor(s): Carvalho Nígela Rodrigues, Arão Grasielly de Oliveira Lázaro, Lima Yanna Andressa Ramos, Godinho Neide Maria de Oliveira, Mota Mariana Flavia, Gigonzag Thaís Cidália VieiraAbstractAccumulation of sexual assault evidences unsubmitted to forensic DNA testing raises concern and it favors low rates of sexual crimes resolution. However, with the advent of DNA databases, these evidences have provided valuable information for investigations. In Brazil, the use of DNA databases is recent and few studies assessed their contribution to criminal resolution. In this regard, this study aimed to evaluate the potential of the DNA Database of Goias State, Central Brazil (BPG-SPTC/GO) in the resolution of sexual crimes without suspects through the insertion of profiles obtained from stored untested evidences collected between 2004 and 2018. Samples were submitted to DNA extraction by differential lysis, followed by the amplification of STR autosomal markers, capillary electrophoresis analysis in the ABI 3500 genetic analyzer and insertion in the BPG-SPTC/GO using CODIS 7 software. The rate of eligible samples for insertion and rates related to the obtained matches were evaluated. Statistical analyses were performed with Epi Info ™ v.7 and BioEstat 5.0 software. A total of 275 samples were submitted to DNA testing, 202 out of them (73.5%) presented eligible profiles for insertion...
Source: Forensic Science International: Genetics - Category: Forensic Medicine Source Type: research