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High Serum Phosphate Level as a Risk Factor to Determine Renal Prognosis in Autosomal Dominant Polycystic Kidney

Masayo Sato1, Hiroshi Kataoka1,2, Yusuke Ushio1

  • 1Department of Nephrology, Tokyo Women's Medical University, Tokyo 162-8666, Japan.

Medicines (Basel, Switzerland)
|March 18, 2020
PubMed

Insights

Lower serum phosphate levels are linked to a worse kidney prognosis in autosomal dominant polycystic kidney disease (ADPKD) patients. This finding highlights phosphate

Area of Science:

  • Nephrology
  • Genetics
  • Metabolic Disorders

Background:

  • Serum phosphate levels are lower in autosomal dominant polycystic kidney disease (ADPKD) compared to other kidney diseases.
  • The specific role of serum phosphate in ADPKD progression is not well understood.
  • Understanding phosphate's role is crucial for predicting kidney disease outcomes.

Purpose of the Study:

  • To investigate the association between serum phosphate levels and renal prognosis in ADPKD patients.
  • To determine if serum phosphate is an independent predictor of kidney function decline in ADPKD.

Main Methods:

  • Retrospective analysis of 55 ADPKD patients with PKD1 or PKD2 mutations not on dialysis.
  • Collection of serum phosphate levels and other clinical data.
  • Cox regression analysis to assess the risk of renal replacement therapy.

Main Results:

  • The median serum phosphate concentration was 3.4 mg/dL.
  • Lower estimated glomerular filtration rate (eGFR) and higher serum phosphate levels were independently associated with an increased risk of renal replacement therapy.
  • Serum phosphate showed a significant hazard ratio (HR) of 6.78 for renal replacement therapy.

Conclusions:

  • Serum phosphate levels are significantly associated with poor renal prognosis in ADPKD patients.
  • Phosphate levels may serve as a valuable biomarker for predicting kidney disease progression in ADPKD.
  • Further research is warranted to explore therapeutic strategies targeting phosphate metabolism in ADPKD.

Keywords:
fibroblast growth factor 23klothophosphatepolycystic kidney diseaserenal prognosis

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