The 3 selected case reports, respectively, described the following: (a) an 18 months child with CD diagnosed because of classic symptoms, and typical intestinal biopsy findings, who showed a high level of DGP IgG and negative TTG IgA [25]; (b) an 8 months child with CD diagnosed because of classic symptoms and positive intestinal biopsy, who showed high level of both DGP IgA and IgG and negative TTG IgA [26]; (c) a 23 months child with CD and peripheral neuropathy who presented with high levels of DGP IgG (16 × the normal level) and intermediate levels of TTG IgA (4 × the normal level) [27]. The gene discussed is CD79A; the disease is peripheral neuropathy.