DNA profile evidence in complex disputed paternity cases: The analysis of 300 real cases |
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Authors: | MA Pena MA Gomez P Percow MM Lojo |
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Institution: | Laboratorio de Análisis Comparativo de ADN, Asesoría Pericial La Plata, Suprema Corte de Justicia de la Provincia de Buenos Aires, 41 y 119-1900 La Plata, Argentina |
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Abstract: | In disputed paternity cases where the putative father is unavailable DNA from one or more of his relatives could be used. However, interpreting results is often difficult, because of the partial information regarding the parental genotype obtained from his relatives. We analyzed results obtained in 300 real paternity cases performed through close relatives of the real father (sib, half-sibs, one grandparent and/or uncle). DNA was typed with PowerPlex (Promega) and the LR estimated with the Software BDGen. As expected the higher LR values were achieved with sibs and half-sibs (in such cases where his/her mother was available for testing). The LR values were tight related to the number of uninformative loci, which varied between 0 and 13. In 10% of the reviewed cases, 10 or more non-informative loci were observed; all of them associated LR values below 0.01. Thus, providing evidence in favor of no relatedness. |
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Keywords: | Paternity testing Complex paternity cases |
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