During follow-up, at 5 years and 1 month old, the child developed transient low positivity for EmA and tTG, whereas at 8 years and 3 months old, she developed autoimmune thyroiditis, with negativity for AGA, EmA, tTG, p-ANCA, ASCAs, and ACAs. This evidence concerns the gene TGM2 and autoimmune thyroid disease.