Glomerular involvement in children with H syndrome

Odeya David, Michael Geylis, Eyal Kristal, Galina Ling, Ruth Schreiber

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Background: H syndrome is a multisystem inflammatory disease caused by mutations in the SLC29A3 gene (OMIM #602782). The protein product, hENT3, is a nucleoside transporter essential for DNA salvage synthesis. Clinical manifestations are hyperpigmentation, hypertrichosis, hepatosplenomegaly, hearing loss, heart anomalies, hypogonadism, short stature, skeletal deformities, and diabetes mellitus. Laboratory findings are consistent with inflammatory processes. Structural kidney anomalies have been described in 6% of patients. Case reports: Three family members with genetically diagnosed H syndrome (c.1279G>A, p.Gly427Ser). Two of them presented with hypoalbuminemia and nephrotic range proteinuria. Kidney ultrasound was normal. Kidney biopsy performed in one patient presenting with generalized peripheral pitting edema revealed membranous nephropathy. Different treatments including ACE inhibitors, corticosteroids, and immunomodulatory agents failed to improve the clinical outcome. Conclusions: Generalized peripheral pitting edema and glomerulopathy broaden the clinical spectrum of H syndrome. Periodic bloodwork and urinalysis are recommended. Graphical abstract: [Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)721-724
Number of pages4
JournalPediatric Nephrology
Volume36
Issue number3
DOIs
StatePublished - 1 Mar 2021

Keywords

  • Children
  • H syndrome
  • Membranous nephropathy
  • Proteinuria
  • SLC29A3
  • hENT3

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