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Proc Natl Acad Sci U S A ; 119(40): e2121024119, 2022 10 04.
Article in English | MEDLINE | ID: mdl-36166477

ABSTRACT

A set of 20 short tandem repeats (STRs) is used by the US criminal justice system to identify suspects and to maintain a database of genetic profiles for individuals who have been previously convicted or arrested. Some of these STRs were identified in the 1990s, with a preference for markers in putative gene deserts to avoid forensic profiles revealing protected medical information. We revisit that assumption, investigating whether forensic genetic profiles reveal information about gene-expression variation or potential medical information. We find six significant correlations (false discovery rate = 0.23) between the forensic STRs and the expression levels of neighboring genes in lymphoblastoid cell lines. We explore possible mechanisms for these associations, showing evidence compatible with forensic STRs causing expression variation or being in linkage disequilibrium with a causal locus in three cases and weaker or potentially spurious associations in the other three cases. Together, these results suggest that forensic genetic loci may reveal expression levels and, perhaps, medical information.


Subject(s)
Forensic Genetics , Genetic Loci , Microsatellite Repeats , Privacy , Forensic Genetics/legislation & jurisprudence , Forensic Genetics/methods , Gene Frequency , Genetics, Population , Humans , Linkage Disequilibrium
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