Patient-Reported Outcomes in Palopegteriparatide-Treated Adults with Hypoparathyroidism: PaTH Forward Trial Extension

Context Individuals with hypoparathyroidism experience a range of physical and cognitive symptoms and reduced quality of life (QoL) despite management with conventional therapy (active vitamin D and calcium).Objective This analysis investigated the long-term impact of parathyroid hormone (PTH) replacement therapy with palopegteriparatide (YORVIPATH (R)) on symptoms, daily functioning, and well-being in adults with chronic hypoparathyroidism. Associations between patient characteristics and changes in patient-reported outcomes (PROs) were also analyzed.Methods PaTH Forward was a phase 2 clinical trial of palopegteriparatide with a 4-week randomized, double-blind, placebo-controlled period followed by an open-label extension period lasting through trial week 266. PRO measures were collected at baseline, weeks 4, 12, 26, 58, and annually thereafter through the end of the trial. The Hypoparathyroidism Patient Experience Scales (HPES) assess disease-specific symptoms and impacts on functioning and well-being. The Short Form Health Survey (SF-36v2) measures general health-related QoL. Data were analyzed using descriptive statistics and Mixed Models for Repeated Measures.Results Palopegteriparatide treatment demonstrated significant improvements from baseline in disease-specific symptoms and impacts on daily functioning and well-being at week 12, which were sustained through week 110. Mean changes in PROs met thresholds for clinically meaningful within-patient improvement. Significant improvements in general health-related QoL were also shown in SF-36v2 scores. Results were generally similar across demographics and patient characteristics.Conclusion Through week 110 of the PaTH Forward trial, PTH replacement therapy with palopegteriparatide was associated with significant improvements in disease-specific symptoms and impacts on daily functioning and well-being, as well as general health-related QoL.