Structure of the gene for congenital nephrotic syndrome of the finnish type (NPHS1) and characterization of mutations

Am J Hum Genet. 1999 Jan;64(1):51-61. doi: 10.1086/302182.


Congenital nephrotic syndrome of the Finnish type (NPHS1) is an autosomal recessive disorder that is caused by mutations in the recently discovered nephrin gene, NPHS1 (AF035835). The disease, which belongs to the Finnish disease heritage, exists predominantly in Finland, but many cases have been observed elsewhere in Europe and North America. The nephrin gene consists of 29 exons spanning 26 kb in the chromosomal region 19q13.1. In the present study, the genomic structure of the nephrin gene was analyzed, and 35 NPHS1 patients were screened for the presence of mutations in the gene. A total of 32 novel mutations, including deletions; insertions; nonsense, missense, and splicing mutations; and two common polymorphisms were found. Only two Swedish and four Finnish patients had the typical Finnish mutations: a 2-bp deletion in exon 2 (Finmajor) or a nonsense mutation in exon 26 (Finminor). In seven cases, no mutations were found in the coding region of the NPHS1 gene or in the immediate 5'-flanking region. These patients may have mutations elsewhere in the promoter, in intron areas, or in a gene encoding another protein that interacts with nephrin.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Amino Acid Sequence
  • Base Sequence
  • Chromosomes, Human, Pair 19
  • Cosmids
  • DNA / chemistry
  • DNA Mutational Analysis
  • Finland / epidemiology
  • Humans
  • Incidence
  • Infant, Newborn
  • Membrane Proteins
  • Molecular Sequence Data
  • Mutation, Missense*
  • Nephrotic Syndrome / congenital*
  • Nephrotic Syndrome / epidemiology
  • Nephrotic Syndrome / genetics*
  • Proteins / genetics*


  • Membrane Proteins
  • Proteins
  • nephrin
  • DNA

Associated data

  • GENBANK/AF035835
  • GENBANK/R33502