Effect of Urate Lowering Therapy on Renal Disease Progression in Hyperuricemic Patients with Chronic Kidney Disease

Yoonjin Kim1, Sungjoon Shin1, Kyungsoo Kim1

  • 1From the Division of Nephrology and the Division of Rheumatology, Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang; and the Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, South Korea.Y. Kim, MD, Research Fellow, Division of Nephrology, Department of Internal Medicine, Dongguk University Ilsan Hospital; S. Shin, MD, PhD, Associate Professor, Division of Nephrology, Department of Internal Medicine, Dongguk University Ilsan Hospital; K. Kim, MD, PhD, Professor, Division of Nephrology, Department of Internal Medicine, Dongguk University Ilsan Hospital; S. Choi, MD, Assistant Professor, Division of Rheumatology, Department of Internal Medicine, Chung-Ang University College of Medicine; K. Lee, MD, Assistant Professor, Division of Rheumatology, Department of Internal Medicine, Dongguk University Ilsan Hospital.

Insights

Urate-lowering therapy (ULT) significantly slowed kidney disease progression in patients with hyperuricemia and chronic kidney disease (CKD). A goal-directed approach to ULT showed better results than maintaining a fixed dose.

Area of Science:

  • Nephrology
  • Rheumatology
  • Internal Medicine

Background:

  • Hyperuricemia is common in patients with chronic kidney disease (CKD).
  • Elevated serum uric acid levels are associated with CKD progression.
  • Urate-lowering therapy (ULT) is used to manage hyperuricemia.

Purpose of the Study:

  • To investigate the effect of ULT on renal disease progression in hyperuricemic patients with stage 3 CKD.
  • To compare the outcomes of ULT versus no ULT in this patient population.

Main Methods:

  • Retrospective review of 158 hyperuricemic patients with stage 3 CKD.
  • Comparison of estimated glomerular filtration rate (eGFR) change and renal disease progression between ULT and non-ULT groups.
  • Logistic regression analysis to identify risk factors for renal disease progression.

Main Results:

  • The ULT group showed a significantly better eGFR change from baseline (-1.19 vs -7.37 ml/min/1.73 m(2), p = 0.001).
  • The proportion of renal disease progression was lower in the ULT group (12.3% vs 27.9%, p = 0.01).
  • Serum uric acid levels < 7 mg/dl reduced the risk of renal disease progression by 69.4%.

Conclusions:

  • ULT significantly delays renal disease progression in hyperuricemic patients with CKD.
  • Goal-directed ULT is more effective than maintaining initial ULT doses.
  • Controlling serum uric acid levels is crucial for managing CKD progression.
Abstract

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