Out of 127 patients (excluding cases with Giardiasis), 107 patients (93.4%) had anti-tTG antibody titers ≥80 U/ml, of which 100 had Marsh grade III, 5 patients (4.6%) had Marsh grade I or Marsh grade II, and only 2 patients (1.9%) had no histological changes (Marsh 0). Here, TGM2 is linked to giardiasis.