The study involved 132 individuals with young-onset diabetes (age < 21 years) in Mali. 100 individuals with young-onset diabetes and 200 controls undersent genotyping using NGS for the HLA-DRB1 exon 2. Genotype data available for 98 individuals with T1D and 195 controls. Here, HLA-DRB1 is linked to type 1 diabetes mellitus.