Unilateral hypoplastic kidney - a novel highly penetrant feature of familial juvenile hyperuricaemic nephropathy

Lucy Plumb, Matko Marlais, Agnieszka Bierzynska, Howard Martin, Kim Brugger, Stephen Abbs, Moin A Saleem

Research output: Contribution to journalArticle (Academic Journal)

1 Citation (Scopus)

Abstract

BACKGROUND: Familial juvenile hyperuricaemic nephropathy is a rare inherited nephropathy with genetic heterogeneity. Categorised by genetic defect, mutations in uromodulin (UMOD), renin (REN) and hepatocyte nuclear factor-1β (HNF-1β) genes as well as linkage to chromosome 2p22.1-21 have previously been identified. Knowledge of the genetics of this phenotype has provided important clues to developmental pathways in the kidney.

CASE PRESENTATION: We report a novel phenotype, with the typical features of hyperuricemia and renal deterioration, but with the additional unexpected feature of unilateral renal hypoplasia. Mutation analyses of the existing known genes and genetic loci were negative indicating a new monogenic cause. Interestingly two cousins of the index case did not share the latter feature, suggesting a modifier gene effect.

CONCLUSION: Unilateral renal hypo/aplasia is usually sporadic and relatively common, with no genetic cause to date identified. This reported pedigree reveals the possibility that a new, unknown renal developmental gene may be implicated in the FJHN phenotype.

Original languageEnglish
Article number76
JournalBMC Nephrology
Volume15
DOIs
Publication statusPublished - 2014

Keywords

  • Adolescent
  • Genetic Predisposition to Disease
  • Gout
  • Humans
  • Hyperuricemia
  • Kidney
  • Kidney Diseases
  • Male
  • Pedigree
  • Penetrance
  • Renal Insufficiency, Chronic

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