TGM2 and Cowden disease: In line with this, the Anti‐TG2‐based CD diagnosis group showed a decrease in gene expression related to intestinal absorption, and additionally, genes associated with lipid and lipoprotein processes were lower expressed both in the Anti‐TG2‐based CD diagnosis and Biopsy‐based CD diagnosis groups than in the Not CD group, with the lowest expression found in the Anti‐TG2‐based CD diagnosis group.