Electrolytes & Blood Pressure  2015;13(2):52-57

doi:10.5049/EBP.2015.13.2.52

A Case Report of Familial Renal Hypouricemia Confirmed by Genotyping of SLC22A12, and a Literature Review.

Hyung Oh KIM 1 ; Chun Gyoo IHM ; Kyung Hwan JEONG ; Hyun Joon KANG ; Jae Min KIM ; Hyung Suk LIM ; Jin Sug KIM ; Tae Won LEE

Affiliations

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Keywords

Familial renal hypouricemia; SLC22A12; URAT1; Acute kidney injury

Country

Republic of Korea

Language

English

Abstract

A 24-year-old male visited our hospital because of pain in both flanks. His biochemistry profile showed an elevated serum creatinine level and low serum uric acid level. History taking revealed that he had undertaken exercise prior to the acute kidney injury (AKI) event, and he stated that family members had a history of urolithiasis. His renal profile improved after hydration and supportive care during hospitalization. Although the patient was subsequently admitted again due to AKI, his status recovered with similar treatment. Since the diagnosis of the patient was familial renal hypouricemia with exercise-induced AKI, we performed genotyping of SLC22A12, which encodes human urate transporter 1. The diagnosis was confirmed by the detection of a homozygous mutation of W258X. We herein, report a case of familial renal hypouricemia confirmed by genotyping of SLC22A12, and review the relevant literature.