INS and type 1 diabetes mellitus: Different studies demonstrate the existence of patients who cannot be clearly classified.We have previously shown that it is possible to differentiate “atypical diabetic patients” based on genotyping the HLA.In this work we show that the analysis of non-HLA related to type 1 diabetes in the INS-VNTR, SNP rs689, and rs3842753 improvesthe identification of these patients.