To further discuss its effect on the severity of postoperative hypoparathyroidism, Huang et al. [17] classified all patients in the hypoparathyroidism group into three subgroups: mild hypoparathyroidism (10 pg/mL ≤ PTH < 15 pg/mL), moderate (5 pg/mL ≤ PTH < 10 pg/mL), and severe (PTH < 5 pg/mL). This evidence concerns the gene PTH and hypoparathyroidism.