Although polymorphisms in the IL-17 gene family have been implicated in GDM [27], the association between specific single nucleotide polymorphisms (SNPs) in the promoter regions of the IL-17A -197G>A (rs2275913) and IL-17RA -947A>G (rs4819554) genes and GDM remains unexplored in Brazilian populations and requires further investigation. This evidence concerns the gene IL17RA and gestational diabetes.