VDR and hypoparathyroidism: Univariate Cox regression analysis of the factors contributing to the prevention of hypoparathyroidism after PTx showed significant differences in dialysis vintage (P < 0.001; HR, 0.996; 95% CI, 0.995–0.998), preoperative vitamin D receptor activation therapy (P = 0.008; HR 0.748; 95% CI, 0.603–0.928), serum intact PTH levels at admission (P = 0.009; HR, 1.000; 95% CI, 1.000–1.000), maximum diameter of PTG for autograft (P = 0.019; HR, 1.033; 95% CI, 1.005–1.061), and weight of PTG for autograft (P = 0.028; HR, 1.000; 95% CI, 1.000–1.001) (Table 6).