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X-chromosomal 21-indel marker panel in German and Baltic populations

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Abstract

In order to verify specific biallelic X-indels and their characteristic properties in distinct populations, one German and three Baltic population groups (Estonia, Latvia, and Lithuania) have been analyzed by a short amplicon method, which also enables detection of degraded DNA samples. To combine 21 indels in a single multiplex PCR, all products were arranged according to their expected amplicon length (~40–160 bp) on the basis of three different fluorochromes. Separation of PCR products was carried out in a single capillary electrophoresis. Data evaluating was performed including five further indel markers which have already been tested in identical samples, resulting in altogether 26 markers. The majority of the genetic material showed combinations of insertion elements (L-fragments). Combinations of deletion elements (S-fragments) in contrast occurred with significant lower ratios. Hardy-Weinberg equilibrium (HWE) was observed for all markers except for MID1361 and MID329. This was attributed to an insufficient number of samples. For two known linkage groups within the 26-indel set (MID357-MID356 and MID3690-MID3719-MID2089), haplotype data were determined. A pairwise comparison of German and Baltic allele frequencies did not show significant deviation. This result indicates a possible genetic association between all four population groups. The calculated biostatistical parameters show high forensic efficiency for this set of indel markers. In a segregation analysis investigating 194 meiosis, no mutations have been detected regarding expected transmission patterns.

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Authors and Affiliations

  1. Institute of Legal Medicine, University of Leipzig, Leipzig, Germany

    Jeanett Edelmann, Michael Kohl, Jan Dressler & Andre Hoffmann

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  1. Jeanett Edelmann
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  2. Michael Kohl
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  3. Jan Dressler
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  4. Andre Hoffmann
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Correspondence to Jeanett Edelmann.

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Edelmann, J., Kohl, M., Dressler, J. et al. X-chromosomal 21-indel marker panel in German and Baltic populations. Int J Legal Med 130, 357–360 (2016). https://doi.org/10.1007/s00414-015-1221-3

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  • DOI: https://doi.org/10.1007/s00414-015-1221-3

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