The only previous study on CYP2C9*2 allele in Bosnian-Herzegovinian population, which investigated the impact of this allele on the susceptibility to type 2 diabetes mellitus (T2DM) by genotyping 37 T2DM patients and 44 healthy controls, reported a low mutant allele frequency of 0.09) (48). The gene discussed is CYP2C9; the disease is diabetes mellitus.