Numbers of individuals with elevated levels of IgG antibodies against tissue transglutaminase (tTG) and/or deamidated gliadin peptides (DGP), and IgA deficiency associated HLA haplotypes among IgA deficient patients with suspected celiac disease (CD) with or without GFD. Here, CD79A is linked to hyperinsulinemic hypoglycemia, familial, 4.