An investigation of the potential of DIP-STR markers for DNA mixture analyses

Details

Serval ID
serval:BIB_6BBD5A3197FC
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
An investigation of the potential of DIP-STR markers for DNA mixture analyses
Journal
Forensic Science International. Genetics
Author(s)
Cereda G., Biedermann A., Hall D., Taroni F.
ISSN
1878-0326 (electronic)
ISSN-L
1872-4973
Publication state
Published
Issued date
2014
Volume
11
Pages
229-240
Language
english
Notes
Publication types: Journal ArticlePublication Status: ppublish
Abstract
The genetic characterization of unbalanced mixed stains remains an important area where improvement is imperative. In fact, using the standard tools of forensic DNA profiling (i.e., STR markers), the profile of the minor contributor in mixed DNA stains cannot be successfully detected if its quantitative share of DNA is less than 10% of the mixed trace. This is due to the fact that the major contributor's profile "masks" that of the minor contributor. Besides known remedies to this problem, such as Y-STR analysis, a new compound genetic marker that consists of a Deletion/Insertion Polymorphism (DIP) linked to a Short Tandem Repeat (STR) polymorphism, has recently been developed and proposed [1]. These novel markers are called DIP-STR markers. This paper compares, from a statistical and forensic perspective, the potential usefulness of these novel DIP-STR markers (i) with traditional STR markers in cases of moderately unbalanced mixtures, and (ii) with Y-STR markers in cases of female-male mixtures. This is done through a comparison of the distribution of 100,000 likelihood ratio values obtained using each method on simulated mixtures. This procedure is performed assuming, in turn, the prosecution's and the defence's point of view.
Pubmed
Web of science
Create date
28/06/2014 15:58
Last modification date
20/08/2019 15:25
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