Among the ten patients, one (MPT-7) was positive for anti-thyroid peroxidase antibody (25 IU/mL) despite normal thyroid function, and another patient (MPT-1) with Graves’ disease who was treated with thiamazole was positive for TSH receptor antibody (third generation, 3.7 IU/L; reference range < 2.0 IU/L). This evidence concerns the gene TPO and Graves disease.