Validation of the HumDXS6807 short tandem repeat polymorphism for forensic application

This paper presents sequence and population genetic data of the HumDXS6807 short tandem repeat (also known as CHLC.GATA52B03) which is a tetranucleotide repeat polymorphism representing seven alleles of 251-275 bp in length. HumDXS6807 is located at Xpter-Xp22.2, i.e., at a genetic distance of more than 87 and 151 cM from the well-known markers HumARA and HumHPRTB, respectively. Kinship tests in 157 family trios revealed a typical X-linked codominant inheritance; mutations were not found. Population genetic data were obtained by analyzing a Caucasian population sample comprising 308 females and 209 males: polymorphism information content (PIC) = 0.640; Heterozygosity (Het) = 0.668; Mean exclusion chance (MEC) = 0.414. The HumDXS6807 allele distribution met the Hardy-Weinberg expectations.