Ewha Med J.  2020 Apr;43(2):35-38. 10.12771/emj.2020.43.2.35.

Severe Acute Kidney Injury with Familial Renal Hypouricemia Confirmed by Genotyping of SLC22A12

  • 1Department of Pediatrics, Ewha Womans University School of Medicine
  • 2Seoul National University Children’s Hospital, Seoul, Korea


Idiopathic renal hypouricemia is a hereditary disease characterized by abnormally high renal uric acid clearance. A defect in the SLC22A12 genes, which encodes the renal uric acid transporter, URAT1, is the known major causes of this disorder. Most patients are clinically silent, but exercise-induced acute kidney injury, urolithiasis or hematuria may develop. The patient presented with azotemia, decreased urine output and abdominal pain without vigorous exercise past history. He was diagnosed with rapidly progressive glomerulonephritis at admission, but low serum uric acid level was persisted. Since the diagnosis of the patient was familial renal hypouricemia, we performed sequence analysis of the SLC22A12 gene in all family members. We report a case of 17-year-old boy with severe acute kidney injury with familial renal hypouricemia confirmed by genotyping of SLC22A12 .


Renal hypouricemia; SLC22A12 gene; Acute kidney injury
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