TY - JOUR
T1 - Familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC)
T2 - report of three cases with a novel mutation in CLDN19 gene.
AU - Al-Shibli, Amar
AU - Konrad, Martin
AU - Altay, Waleed
AU - Al Masri, Omar
AU - Al-Gazali, Lihad
AU - Al Attrach, Ibrahim
PY - 2013/3
Y1 - 2013/3
N2 - Familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC) is a rare autosomal recessive disorder that is caused by mutation in the genes coding for tight junction proteins Claudin-16 and Claudin-19. Affected individuals usually develop nephrocalcinosis and progressive renal failure; some of them may have ophthalmologic involvement as well. Phenotypic description of three affected individuals from the same Middle Eastern kindred (two sisters and their cousin) is presented. This includes both clinical and laboratory findings upon initial presentation and subsequent follow-up. Molecular analysis of the CLDN19 gene was performed on the three cases and one set of parents. A novel homozygous missense mutation in CLDN19 (c.241C>T, p.Arg81Cys) was detected in all three affected children. The parents were heterozygous. Clinical and laboratory data in the three children with renal and ocular manifestations of FHHNC are described. Genetic analysis revealed a novel mutation in the CLDN19 gene. FHHNC is a rare cause of nephrocalcinosis, and we believe that it should be considered in the presence of nephrocalcinosis with hypercalcuria and hypermagnesuria.
AB - Familial hypomagnesemia with hypercalciuria and nephrocalcinosis (FHHNC) is a rare autosomal recessive disorder that is caused by mutation in the genes coding for tight junction proteins Claudin-16 and Claudin-19. Affected individuals usually develop nephrocalcinosis and progressive renal failure; some of them may have ophthalmologic involvement as well. Phenotypic description of three affected individuals from the same Middle Eastern kindred (two sisters and their cousin) is presented. This includes both clinical and laboratory findings upon initial presentation and subsequent follow-up. Molecular analysis of the CLDN19 gene was performed on the three cases and one set of parents. A novel homozygous missense mutation in CLDN19 (c.241C>T, p.Arg81Cys) was detected in all three affected children. The parents were heterozygous. Clinical and laboratory data in the three children with renal and ocular manifestations of FHHNC are described. Genetic analysis revealed a novel mutation in the CLDN19 gene. FHHNC is a rare cause of nephrocalcinosis, and we believe that it should be considered in the presence of nephrocalcinosis with hypercalcuria and hypermagnesuria.
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U2 - 10.4103/1319-2442.109601
DO - 10.4103/1319-2442.109601
M3 - Article
C2 - 23538362
AN - SCOPUS:84879046086
VL - 24
SP - 338
EP - 344
JO - AEU - International Journal of Electronics and Communications
JF - AEU - International Journal of Electronics and Communications
SN - 1434-8411
IS - 2
ER -