Six novel ATM mutations in Italian patients with classical ataxia-telangiectasia

Hum Mutat. 2003 Apr;21(4):450. doi: 10.1002/humu.9129.

Abstract

Mutations in the ATM gene are responsible for the autosomal recessive syndrome Ataxia Telangiectasia (AT). In a group of 26 classical AT Italian patients studied by protein truncation test (PTT), we identified six new mutations, never reported so far. Mutations -spread over the entire ATM coding sequence with not clear "hot-spot"- are four frameshifts (2192_2193insA, 3110delC, 7150delA, 8368delA), one splice site alteration (8850G>T, causing exon 63 skipping) and one nonsense change (6913C>T, Q2305X). The identification of ATM gene mutations is important for understanding the molecular basis of the disease, and is essential for diagnosis and genetic counseling.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ataxia Telangiectasia / genetics*
  • Ataxia Telangiectasia / pathology
  • Ataxia Telangiectasia Mutated Proteins
  • Cell Cycle Proteins
  • Cell Line
  • Codon, Nonsense / genetics
  • DNA-Binding Proteins
  • Frameshift Mutation
  • Genetic Testing / methods
  • Humans
  • Italy
  • Lymphocytes / chemistry
  • Lymphocytes / metabolism
  • Lymphocytes / pathology
  • Mutation*
  • Protein Serine-Threonine Kinases / genetics*
  • RNA Splice Sites / genetics
  • Registries
  • Tumor Suppressor Proteins

Substances

  • Cell Cycle Proteins
  • Codon, Nonsense
  • DNA-Binding Proteins
  • RNA Splice Sites
  • Tumor Suppressor Proteins
  • ATM protein, human
  • Ataxia Telangiectasia Mutated Proteins
  • Protein Serine-Threonine Kinases

Associated data

  • OMIM/208900