Two Korean Infants with Genetically Confirmed Congenital Nephrotic Syndrome of Finnish Type.
10.3346/jkms.2009.24.S1.S210
- Author:
Beom Hee LEE
1
;
Yo Han AHN
;
Hyun Jin CHOI
;
Hee Kyung KANG
;
Sung Do KIM
;
Byoung Soo CHO
;
Kyung Chul MOON
;
Il Soo HA
;
Hae Il CHEONG
;
Yong CHOI
Author Information
1. Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea. cheonghi@snu.ac.kr
- Publication Type:Case Report ; Research Support, Non-U.S. Gov't
- Keywords:
Congenital Nephrotic Syndrome;
Congenital Nephrotic Syndrome of Finnish Type;
NPHS1 Gene;
Nephrin;
Mutation
- MeSH:
Base Sequence;
Biopsy;
Codon, Nonsense;
Female;
Frameshift Mutation;
Humans;
Infant;
Infant, Newborn;
Korea;
Male;
Membrane Proteins/*genetics;
Microscopy, Electron/methods;
Molecular Sequence Data;
Mutation;
Nephrotic Syndrome/*diagnosis/*genetics
- From:Journal of Korean Medical Science
2009;24(Suppl 1):S210-S214
- CountryRepublic of Korea
- Language:English
-
Abstract:
Congenital nephrotic syndrome is defined as nephrotic syndrome which manifests in utero or during the first 3 months of life. The prototype of congenital nephrotic syndrome is congenital nephrotic syndrome of Finnish type (CNF, OMIM #602716), which is caused by loss-of-function mutations of the nephrin gene (NPHS1). There have been few clinical case reports of CNF in Korea, but none of which was confirmed by genetic study. Here, we report two children with congenital nephrotic syndrome. Genetic analysis of the NPHS1 gene revealed compound heterozygous frame-shifting mutations (c.2156_2163 delTGCACTGC causing p.L719DfsX4 and c.3250_3251insG causing p.V1084GfsX12) in one patient and a missense mutation (c.1381G>A causing p.R460Q) and a nonsense mutation (c.2442C>G causing p.Y814X) in the other patient. The nonsense mutation was novel. The clinical courses of the patients were typical of CNF. This is the first report of genetically confirmed CNF in Korea to date. The early genetic diagnosis of CNF is important for proper clinical management of the patients and precise genetic counseling of the families.
