Highlights
- •Yfiler® testing in 47 spermatozoa negative digital and/or penile penetration cases.
- •Predominantly vulval and low vaginal casework samples tested.
- •30% of cases produced at least one sample with three or more Y-STR alleles.
- •21% of cases produced at least one sample with 10 or more Y-STR alleles.
- •Demonstrated the persistence of male DNA for at least 48 h.
Abstract
This forensic casework trial involved Yfiler® testing samples from 47 digital and/or penile penetration cases where the medical
examination had occurred within 48 h of the alleged incident and no spermatozoa had been detected following Sperm Elution©. 30% of these cases yielded at least one Y-STR profile comprising three or more alleles
per profile and 21% yielded at least one Y-STR profile of ten or more alleles per
profile. This trial further investigated the persistence of male DNA in different
case types, the location of samples submitted for testing and whether samples from
different locations benefit from being combined prior to testing. The data supports
the use of Y-STR profiling to provide scientific evidence to investigate whether the
alleged sexual activity had occurred as well as to obtain probative evidence in spermatozoa
negative penetration cases.
Keywords
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Article info
Publication history
Published online: October 23, 2014
Identification
Copyright
© 2014 Published by Elsevier Inc. All rights reserved.
