The expression levels of the four RAG1 mRNA splice forms were also determined in γδIELs, αβIELs, and CD2+CD7+IELs isolated from intestinal biopsies of children with active, newly diagnosed untreated coeliac disease (active coeliac disease) and from symptom-free patients with coeliac disease on a gluten-free diet (treated coeliac disease). This evidence concerns the gene RAG1 and celiac disease.