Estimating health state utilities in primary hyperoxaluria type 1: a valuation study

Area of Science:

• Nephrology
• Health Economics
• Quality of Life Research

Background:

• Quantitative data on health state utilities in primary hyperoxaluria type 1 (PH1) are limited.
• PH1 is a rare genetic disorder leading to kidney damage and systemic oxalosis.

Purpose of the Study:

• To estimate utility values for various health states in PH1.
• To understand the impact of PH1 on health-related quality of life (HRQoL) across disease progression.

Main Methods:

• Developed health state vignettes for different stages of chronic kidney disease (CKD) in PH1 and post-combined liver and kidney transplant (CLKT).
• Evaluated utility values using EQ-5D-5L, Visual Analog Scale, and Time Trade-Off methods with the UK general public.

Main Results:

• Utility values remained stable in early CKD stages (1-3b) but decreased significantly in later stages (4-5).
• A notable recovery in quality of life was observed in the post-CLKT health state.
• Similar patterns were observed across the three valuation methods.

Conclusions:

• This study provides crucial quantitative data on the HRQoL burden associated with PH1 progression and treatment.
• Findings highlight unique PH1 clinical features and their impact on HRQoL, aiding future health economic evaluations.
• The data underscore the importance of considering PH1-specific factors in treatment and economic assessments.