Pediatric Nephrology

, Volume 21, Issue 11, pp 1776–1778 | Cite as

Paracellin-1 gene mutation with multiple congenital abnormalities

  • Mehmet Türkmen
  • Belde Kasap
  • Alper Soylu
  • Ece Böber
  • Martin Konrad
  • Salih Kavukçu
Brief Report

Abstract

Familial hypomagnesemia with hypercalciuria and nephrocalcinosis is an autosomal recessive renal tubular disorder characterized by renal magnesium wasting, hypercalciuria, advanced nephrocalcinosis and progressive renal failure. Mutations in the paracellin-1 (CLDN16) gene have been defined as the underlying genetic defect. The tubular disorders and progression in renal failure are usually resistant to magnesium substitution and hydrochlorothiazide therapy, but hypomagnesemia may improve with advanced renal insufficiency. We present a patient with a homozygous truncating CLDN16 gene mutation (W237X) who had early onset of renal insufficiency despite early diagnosis at 2 months. He also had additional abnormalities including horseshoe kidney, neonatal teeth, atypical face, cardiac abnormalities including coarctation of the aorta associated with atrial and ventricular septal defects, umbilical hernia and hypertrichosis. To the best of our knowledge, this is the youngest case diagnosed as familial hypomagnesemia with hypercalciuria and nephrocalcinosis and the first case having such additional congenital abnormalities independent of the disease itself.

Keywords

Paracellin-1 Claudin-16 Multiple congenital abnormalities Hypomagnesemia Hypercalciuria Nephrocalcinosis 

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Copyright information

© IPNA 2006

Authors and Affiliations

  • Mehmet Türkmen
    • 1
  • Belde Kasap
    • 1
  • Alper Soylu
    • 1
  • Ece Böber
    • 1
  • Martin Konrad
    • 2
  • Salih Kavukçu
    • 1
    • 3
  1. 1.Faculty of Medicine, Department of PediatricsDokuz Eylül UniversityİzmirTurkey
  2. 2.University Children’s HospitalBerneSwitzerland
  3. 3.Divison of Nephrology, Department of PediatricsDokuz Eylul UniversityİzmirTurkey

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