SLC22A4 and type 1 diabetes mellitus: Therefore, we can exclude the studied SLC22A5 markers as causative candidates for T1D in Spanish patients, but in the case of Slc2F2 our results are not conclusive, albeit a recently published study does not find association of Slc2F1 and Slc2F2 SLC22A4 polymorphisms within a well-powered T1D cohort [22], in agreement with our data.