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<p>At 2&#xa0;years and 4&#xa0;months old, a girl presented with microscopic hematuria, mild edema, and nephrotic-range proteinuria with hypoalbuminemia and hypercholesterolemia without other extrarenal manifestations. She had a family history of microscopic hematuria. Kidney biopsy revealed a glomerular basal membrane of uneven thickness combined with podocytopathy. Genetic testing revealed a heterozygous c.3499G &gt; A (p.Gly1167Arg) variant in <i>COL4A3</i>, which has been reported as a pathogenic variant of autosomal dominant Alport syndrome; this variant was inherited from her father. Treatment with steroids and immunosuppressants was effective. Podocytopathy should be considered in Alport syndrome patients with a young age of onset and nephrotic-range proteinuria. Electron microscopy plays an important role in diagnosis.</p>

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Alport syndrome complicated with steroid-sensitive nephrotic syndrome: a case report

  • 期刊论文

  • 发表日期：

    2025年6月24日

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  • Qian Fu,
  • Yuling Luo,
  • Xingfeng Yao,
  • Hui Wang

摘要

At 2 years and 4 months old, a girl presented with microscopic hematuria, mild edema, and nephrotic-range proteinuria with hypoalbuminemia and hypercholesterolemia without other extrarenal manifestations. She had a family history of microscopic hematuria. Kidney biopsy revealed a glomerular basal membrane of uneven thickness combined with podocytopathy. Genetic testing revealed a heterozygous c.3499G > A (p.Gly1167Arg) variant in COL4A3, which has been reported as a pathogenic variant of autosomal dominant Alport syndrome; this variant was inherited from her father. Treatment with steroids and immunosuppressants was effective. Podocytopathy should be considered in Alport syndrome patients with a young age of onset and nephrotic-range proteinuria. Electron microscopy plays an important role in diagnosis.