In a study with 452 patients with differentiated thyroid cancer who had undergone total thyroidectomy with or without cervical LN dissection, 82 patients with pre-ablation Tg levels <1 ng/mL had no structural recurrence, whereas 42% of 197 patients with pre-ablation Tg levels >10 ng/mL developed recurrence [30]. The gene discussed is TG; the disease is differentiated thyroid carcinoma.