TPO and breast cancer: Further analyses (not shown inTable 5) did not show any significant difference between hormone-dependent BC and positive thyroid autoantibodies (7 out of 25 hormone-dependent BC cases were positive for TPO-Abs, p = 0.15 and 6 of 11 hormone-dependent BC cases had positive Tg-Abs, p = 1.00) nor between the mean levels of thyroid hormones (p = 0.486 for TSH levels, p = 0.229 for fT3 levels and p = 0.15 for fT4 levels) and hormone-dependent BC.