In this study, the search for polymorphic sites covered known MODY genes and GLIS3. A comparison of the detected substitutions was performed with a number of specialized databases: the 1000 Genomes Project (http://www.1000genomes.org/), dbSNP database (https://www.ncbi.nlm.nih.gov/SNP/), and ClinVar (http://clinvar.com/). This evidence concerns the gene GLIS3 and MODY.