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Kidney Week

Abstract: PO0416

Primary Hyperoxaluria (PH) Types 1 and 2 with Kidney and/or Liver Transplant Achieve Best Health-Related Quality of Life (HRQoL)

Session Information

Category: Bone and Mineral Metabolism

  • 402 Bone and Mineral Metabolism: Clinical

Authors

  • Modersitzki, Frank, New York University Grossman School of Medicine, New York, New York, United States
  • Milliner, Dawn S., Mayo Clinic Rochester, Rochester, Minnesota, United States
  • Lieske, John C., Mayo Clinic Rochester, Rochester, Minnesota, United States
  • Goldfarb, David S., VA New York Harbor Healthcare System Manhattan Campus, New York, New York, United States
Background

Our previous study showed that PH without a transplant (tx) had worse HRQoL compared to the US Standard Population and worsened with increased stone frequency. We now show the first longitudinal HRQoL profiles for PH patients with transplants.

Methods

PH participants were enrolled from the Rare Kidney Stone Consortium registry. HRQoL was measured with a generic non-disease specific instrument (SF-36v2). Results were calculated as norm-based scores (NBS) based on US Standard Population (Mean domain score = 50). We created three groups based on the time of last stone event (<= 30 days, 31 – 365 days, >366 days). The study compared HRQoL for participants with a kidney and/or liver transplant over 5 different time points.

Results

This sub-sample included 100 surveys of 32 PH participants (16 males and 16 females) with a tx. The mean age was 47 years for both males and females. This sub-sample includes 24 participants with liver/kidney tx (75%) and 8 with kidney tx only (25%). Participants with only a kidney tx reported significantly more stone events within a year (26% vs 13%, Χ2 =0.028). Two way ANOVA did not find a change in HRQoL profiles over time for PH participants with kidney or kidney/liver tx (figure). Most mean domain scores are 50 or above, except for the domain of General Health which was less. Participants with only a kidney tx scored significantly lower in role physical, bodily pain, general health, social function, and physical component score (data not shown) than participants with kidney/liver tx. There was no difference between male and female participants over time.

Conclusion

PH participants with kidney/liver tx achieve better HRQoL, measured with a non-disease specific generic instrument, than those with kidney alone; both are better when compared to the US Standard Population. The majority of PH participants with a tx are stone-free, with a direct beneficial impact on their HRQoL.

Funding

  • NIDDK Support