Y-STR data of the Yfiler Plus panel in population of north-eastern Poland.

Background: The use of new high-resolution and forensic identification capabilities for population studies offered by new multiplex methods (such as Yfiler Plus) is crucial in forensic genetics cases. The development of haplotype frequency databases is essential to take full advantage of the new Y chromosome determination capabilities.

Purpose: Development of the haplotype database of the Yfiler Plus kit for a population-based sample of 534 males from northeastern Poland and calculation of suitability parameters for forensic genetics studies.

Materials and methods: The study was conducted on a population sample of 534 unrelated males from the area of northeastern Poland using the Yfiler Plus panel of 27 markers located on the Y chromosome.

Results: Four haplotypes appeared twice. The Discrimination Capacity (DC) of the entire set was 0.9925. The highest Gene Diversity (GD) value was calculated for DYS518 (0.86) belonging to the fast-mutation markers, while the lowest GD was calculated for DYS392 (0.42).

Conclusion: The results indicate the need for further research and observation of changes, both in different regions of Poland and across Europe.