Developmental Validation of Short Tandem Repeat Reagent Kit for Forensic DNA Profiling of Canine Biological Material

Dayton, Melody; Koskinen, Mikko T.; Tom, Bradley K.; Mattila, Anna-Maria; Johnston, Eric; Halverson, Joy; Fantin, Dennis; DeNise, Sue; Budowle, Bruce; Smith, David Glenn; Kanthaswamy, Sree
June 2009
Croatian Medical Journal;Jun2009, Vol. 50 Issue 3, p268
Academic Journal
Aim To develop a reagent kit that enables multiplex polymerase chain reaction (PCR) amplification of 18 short tandem repeats (SIR) and the canine sex-determining Zinc Finger marker. Methods Validation studies to determine the robustness and reliability in forensic DNA typing of this multiplex assay included sensitivity testing, reproducibility studies, intra- and inter-locus color balance studies, annealing temperature and cycle number studies, peak height ratio determination, characterization of artifacts such as stutter percentages and dye blobs, mixture analyses, species-specificity, case type samples analyses and population studies. Results The kit robustly amplified domesticated dog samples and consistently generated full 19-locus profiles from as little as 125 pg of dog DNA. In addition, wolf DNA samples could be analyzed with the kit. Conclusion The kit, which produces robust, reliable, and reproducible results, will be made available for the forensic research community after modifications based on this study's evaluation to comply with the quality standards expected for forensic casework.


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