LRBA and juvenile idiopathic arthritis: Additionally, many LRBA‐deficient patients (Lanio et al., 2009) suffer from at least one autoimmune disorder with autoimmune hemolytic anemia and ITP the most common, followed by autoimmune thyroid disease, autoimmune enteropathy, type 1 diabetes mellitus, and juvenile idiopathic arthritis (Charbonnier et al., 2015; Kostel Bal et al., 2017).