TGM2 and ventricular septal defect: None of the patients had an anti-TTG Ab serum level above 18 units/mL (Mean ± SD: 3.24 ± 2.69 units/mL, ranging from 0.3 to 16.6 units/mL), and only one girl with VSD-type CHD and BMI of 15.9 had an anti-TTG Ab level of 16.6 units/mL, which was considered as borderline.