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|Title:||Fragile sites still breaking [Review]|
|Citation:||Trends in Genetics, 1998; 14(12):501-506|
|Publisher:||ELSEVIER SCIENCE LONDON|
|Abstract:||Rare fragile sites on chromosomes are the archetypal dynamic mutations. They involve large expansions of the microsatellite CCG or AT-rich minisatellites. The mutation process is an increase in repeat-unit number from within a normal range, through a premutation range, up to full mutation where the fragile site is expressed. Full mutations can inactivate genes and are regions of genomic instability. Common fragile sites, in particular, might have a role in oncogensis by facilitating gene inactivation through chromosomal deletion or amplification, but this requires further exploration. The mechanisms behind the changes that give rise to the cytogenetic manifestation of chromosomal fragility are now beginning to be understood.|
|Keywords:||Humans; Neoplasms; Mental Retardation; Chromosome Fragility; Chromosome Fragile Sites|
|Appears in Collections:||Paediatrics publications|
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