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TransCon® PTH (Palopegteriparatide) Demonstrates Sustained, Clinically Meaningful Improvements in Kidney Function in Adults with Hypoparathyroidism Treated Up to 5 Years

$ASNDPress releaseOct 26, 2026, 8:00 AM ETRead the release

Ascendis Pharma presented pooled Phase 2/3 data showing TransCon PTH delivered sustained kidney-function improvements in hypoparathyroidism patients treated up to 5 years. Mean eGFR rose 7.2 mL/min/1.73 m2 by Week 26 and 9.6 by Week 52, with 68.9% of patients achieving clinically meaningful gains; eGFR stayed stable through Week 266. By final visit, 98% of patients were off active vitamin D and 95% off therapeutic calcium, with no new safety signals.

Key figures

Drug Name
TransCon PTH (palopegteriparatide)
Phase Of Trial
Phase 2 (PaTH Forward) and Phase 3 (PaTHway)
Pooled patients
141
Treated patients
139
Calcium independence
95%
Normal serum calcium
8.9 mg/dL
Urine calcium week52
170 mg/day
Urine calcium baseline
396 mg/day
Vitamin d independence
98%
Egfr improvement week26
7.2 mL/min/1.73 m2
Egfr improvement week52
9.6 mL/min/1.73 m2
Egfr slope week52 to week266
0.28 mL/min/1.73 m2/year
Patients with egfr gain 5plus week52
68.9%
Patients with egfr gain 10plus week52
49.6%

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