Study of touch DNA in simulated situations for forensic purposes.

• Grant number: 16/14355-3
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2017
• End date: January 31, 2019
• Field of knowledge: Health Sciences - Medicine - Legal Medicine and Deontology
• Principal Investigator: Fernanda de Toledo Gonçalves
• Grantee: Fernanda de Toledo Gonçalves
• Host Institution: Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Cintia Fridman Rave

Abstract

Fingerprints are biological traces most commonly found in crime scenes, but in most cases, these are not intact to identify the criminal for fingerprinting. Thus, analysis of DNA profiles from the recovered biological material in these fingerprints have been increasingly used. The deposition of fingerprints, in general, can occur by primary or secondary transfer and a number of factors such as environmental conditions, substrates and individual characteristics of fingerprint donors can affect the success of achieving these genetic profiles. In Brazil, among the various types of crimes committed daily, crimes with cold weapons, vehicle thefts them and cybercrimes are the most frequent, and in the first case not always DNA profiles resulting from knives are satisfactory grips, while in the last two cases this field still seems to be unexplored, indicating the demand for research in this area. With this in mind, the aim of this study is to analyze and improve the feasibility of obtaining DNA profiles in different hilts materials knives, door handles and steering wheels of cars, and computer keyboards, through simulated direct and secondarytransfer situations, considering the variables that can interfere in the process, in order to assist the work of the technical and scientific police in identifying criminals. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FRANCISCO, DANIELA DE OLIVEIRA; LOPEZ, LUIS FERNANDEZ; GONCALVES, FERNANDA DE TOLEDO; FRIDMAN, CINTIA. Casework direct kit as an alternative extraction method to enhance touch DNA samples analysis. FORENSIC SCIENCE INTERNATIONAL-GENETICS, v. 47, JUL 2020. (17/06484-0, 16/14355-3)

FRIDMAN, CINTIA; GONCALVES, FERNANDA T.; FRANCISCO, DANIELA O.. Efficiency of Casework Direct Kit for extraction of touch DNA samples obtained from cars steering wheels. FORENSIC SCIENCE INTERNATIONAL GENETICS SUPPLEMENT SERIES, v. 7, n. 1, p. 16-18, DEC 2019. (17/06484-0, 16/14355-3)