Ethnic categorization of the Brazilian population samples — Native Americans, European descendants,Mulattoes, and African descendants — using allelicfrequencies distribution of gene variants associatedwith neurodegenerative diseasesulattoes, and African descendants — using allelic frequencies distribution of gene variants associated with neurodegenerative diseases. Genetics and Mol. Res. 2025;24(1):1-12. doi:10.4238/wjehkt19