The human IL4I1 gene is located on chromosome 19q13.3-13.4, aregion implicated in susceptibility to systemic lupus erythematosus, rheumatoidarthritis, multiple sclerosis, and insulin-dependent diabetes mellitus, raisingthe possibility that IL4I1 may play a role in inflammatory diseases [13, 15, 16, 17]. This evidence concerns the gene IL4I1 and type 1 diabetes mellitus.