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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Screening of Nijmegen breakage syndrome 1 mutations in four unrelated families by polymerase chain reaction using sequence-specific primers.

Nijmegen breakage syndrome (NBS) is an autosomal recessive disorder characterized by a marked predisposition to lymphoreticular malignancies. The rarity of the disease and the presence, in several cases, of a mild clinical phenotype make diagnosis difficult. The underlying gene, NBS1, consists of 16 exons and encodes nibrin, a member of the hMRE11/hRAD50/hNBS1 protein complex. In addition to the "Slavic mutation," 657del5, identified in more than 100 patients with NBS, 9 other mutations have been found in families of different ethnic origin. We have developed a polymerase chain reaction (PCR) method to rapidly detect the private mutations, 742insGG and 835del4, in exon 7 and the 900del25 mutation in exon 8 of the NBS1 gene. In particular, we designed NBS1-specific primers for wild-type and mutated alleles, and optimized a specific PCR protocol for each mutation. We used this method to analyze 4 unrelated NBS families, 3 from Italy and 1 from Morocco. We believe it could be a useful tool for: (1) confirming the NBS diagnosis in the presence of clinical signs of the disease; (2) identifying NBS heterozygotes and performing prenatal diagnosis in families with affected members; and (3) screening selected populations in which the frequency of NBS might be higher because of a founder effect.[1]

References

  1. Screening of Nijmegen breakage syndrome 1 mutations in four unrelated families by polymerase chain reaction using sequence-specific primers. Di Masi, A., Antoccia, A., Spadoni, E., Varon-Mateeva, R., Maraschio, P., Tanzarella, C. Genet. Test. (2006) [Pubmed]
 
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