Japanese population data on X-chromosomal STR locus AR

Area of Science:

• Genetics
• Forensic Science
• Human Population Studies

Background:

• Trinucleotide repeat polymorphisms are common in the human genome.
• The androgen receptor (AR) gene is located on the X chromosome.
• Genetic markers are crucial for human identification and forensic applications.

Purpose of the Study:

• To investigate the trinucleotide repeat polymorphism at the AR locus in a Japanese population.
• To assess the informativeness of the AR locus for forensic applications.

Main Methods:

• Genotyping of 404 unrelated Japanese individuals (202 females) was performed.
• Analysis focused on the trinucleotide repeat polymorphism at the AR locus (Xcen-q13).
• Allele frequencies and size variations were determined.

Main Results:

• A total of 27 alleles were identified at the AR locus.
• Twenty-five of these alleles differed by integral multiples of the repeat unit, indicating high variability.
• The observed polymorphism pattern suggests significant genetic diversity within the studied population.

Conclusions:

• The AR locus exhibits a high degree of polymorphism in the Japanese population.
• The characterized genetic variation at the AR locus supports its utility as a powerful marker for forensic identification.
• This finding contributes to the development of robust DNA profiling techniques.