Table 5.

THPT/persistent hyperparathyroidism.

Study	Definition	Pre-transplant PTx	Post-transplant PTx	Notes
Wang 2023 (27)	Persistent HPT (>6 months after PTx)	1/23 (4.3%)	4/75 (5.3%)	No statistical difference
Jeon 2012 (23)	iPTH >65 pg/mL at 1 year post-KTx	12/37 (36%)	Not reported	Still elevated in pre-PTx group
Okada 2019 (26)	Not directly reported	–	–	Only shows higher Ca and less hypocalcemia in pre-PTx group
van der Plas 2019 (25)	Post-transplant HPT recurrence	3.7%	2.3%	No significant difference (P = 0.36)
Callender 2017 (5)	Persistent HPT (non-operated)	–	–	Emphasizes PTH ≥6×ULN associated with graft failure