The use of the STRs HUMTH01, HUMVWA31/A,HUMF13A1, HUMFES/FPS,HUMLPL in forensic application: Validation studies and population data for Galicia (NW Spain) |
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Authors: | C Pestoni M V Lareu M S Rodríguez I Muñoz F Barros A Carracedo |
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Institution: | (1) Institute of Legal Medicine, University of Santiago de Compostela, E-15705 Santiago de Compostela, Spain |
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Abstract: | The 5 tetranucleotide short tandem repeats, HUMTHOI, HUMVWA31/A, HUMF13A1, HUMFES/FPS and HUMLPL were studied using different electrophoretic methods and PCR amplification conditions in order to optimize the typing conditions. A genetic population study in the population of Galicia was carried out and the allele and genotype frequencies are given. Compliance with the Hardy-Weinberg equilibrium was tested using different statistical parameters, with clear advantages resulting in favor of using the exact test (Guo-Thompson method) instead of conventional chi-square methods. Some statistical parameters of forensic interest (PD, CE, h) were also calculated. There were no mutations found in a total of 73 paternal meioses and 101 maternal meioses. Abnormal electrophoretic mobility was found in the AT-rich STR HUMF13AI under non-denaturing conditions and, therefore, the use of denaturing conditions is absolutely necessary. No "stutter" bands were found, although double peaks in the HUMFES/FPS system were observed in some samples. The advantage of using automated sequencers with fluorescent technology is also reported. |
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Keywords: | Short Tandem Repeats HUMTHOI HUMVWA31/A HUMF13A1 HUMFES/FPS HUMLPL PCR Population studies Forensic validation |
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