PTH concentrations at 12 months had a positive correlation with PTH before KT (r = 0.38; p=0.032), alkaline phosphatase before KT (r = 0.43; p=0.003), hyperphosphatasemia before KT (r = 0.32; p=0.026), vitamin D deficiency at 6 months (r = 0.39; p=0.007), hyperparathyroidism at 6 months (r = 0.60; p=0.001), and alkaline phosphatase at 6 months (r = 0.42; p=0.001), with a negative correlation with vitamin D concentration at 1 month (r = -0.45; p=0.002), and vitamin D concentration at 6 months (r = -0.48; p=0.001). Here, PTH is linked to vitamin D deficiency.