This is a rare syndrome in which the thyroid hormone levels are elevated but the TSH level is not suppressed, or not completely suppressed as would be expected.52 However, it is very unlikely that this scenario would present de novo after thyroidectomy for thyroid cancer, and assessing pre-thyroidectomy thyroid function tests is of vital importance to establish normal function of the hypothalamic–pituitary–thyroid axis. The gene discussed is TG; the disease is thyroid cancer.