Abstract
BackgroundWe herein report a 3-year-old boy presented with chronic kidney disease (CKD) due to PAX2 missense mutation (C to G transversion at position 418 in exon 4).Case presentationHe attended our clinic with a 3-month history of foamy urine. Upon examination, he had reduced estimated glomerular filtration rate (GFR) and renal atrophy. Genetic investigations revealed that he has inherited a mutated PAX2 gene from his father, who had renal failure at the age of 20. We searched the literature and confirmed that this mutation site has not been reported by any other group before.ConclusionsAlthough renal coloboma syndrome (RCS) with simultaneous kidney and eye involvement is the most common phenotype of PAX2 mutations, current literature supports that such mutations may have profuse clinical manifestations and renal hypoplasia is one distinct entity in the spectrum.
Highlights
We report a 3-year-old boy presented with chronic kidney disease (CKD) due to Paired box 2 (PAX2) missense mutation (C to G transversion at position 418 in exon 4).Case presentation: He attended our clinic with a 3-month history of foamy urine
Conclusions: renal coloboma syndrome (RCS) with simultaneous kidney and eye involvement is the most common phenotype of PAX2 mutations, current literature supports that such mutations may have profuse clinical manifestations and renal hypoplasia is one distinct entity in the spectrum
We present a child with CKD caused by renal hypoplasia
Summary
We report a 3-year-old boy presented with chronic kidney disease (CKD) due to PAX2 missense mutation (C to G transversion at position 418 in exon 4).Case presentation: He attended our clinic with a 3-month history of foamy urine. Conclusions: renal coloboma syndrome (RCS) with simultaneous kidney and eye involvement is the most common phenotype of PAX2 mutations, current literature supports that such mutations may have profuse clinical manifestations and renal hypoplasia is one distinct entity in the spectrum. Recent studies have shown that PAX2 gene plays critical roles in organogenesis during embryonic development, and the PAX2 mutation is the most common cause of renal hypoplasia [3].
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