A novel missense mutation in exon 3 of the COL4A5 gene associated with late-onset Alport syndrome

A. E. Turco, S. Rossetti, M. O. Biasi, G. Rizzoni, L. Massella, N. H. Saarinen, A. Renieri, P. F. Pignatti, M. De Marchi

Research output: Contribution to journalArticlepeer-review

Abstract

We have identified a novel missense transition (362G → A) in exon 3 of the COL4A5 gene in a male patient with late-onset Alport syndrome. We used non-isotopic single strand conformation polymorphism, heteroduplex analysis, and automated DNA sequencing. The mutation changes a conserved glycine at codon 54 for an aspartic acid (Gly54Asp), which abolishes a BstNI site. Using restriction analysis, we identified the heterozygous carrier status in the two daughters of the proband. Our findings are in keeping with the hypothesis that slower progressive forms of Alport syndrome are more often associated with missense mutations rather than large deletions or frameshifts. This is the first mutation described in the N-terminus triple helical 7S domain of the COL4A5 gene in an Alport syndrome patient.

Original languageEnglish
Pages (from-to)261-263
Number of pages3
JournalClinical Genetics
Volume48
Issue number5
Publication statusPublished - 1995

Keywords

  • Alport syndrome
  • COL4A5 gene
  • Heteroduplex analysis
  • Mutation detection
  • SSCP analysis

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

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