Comparison of two subtelomeric assays for the screening of chromosomal rearrangements: analysis of 383 patients, literature review and further recommendations

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dc.contributor.authorSanta María, Lorena
dc.contributor.authorFaundes, Víctor
dc.contributor.authorCurotto, Bianca
dc.contributor.authorMorales, Paulina
dc.contributor.authorMorales, Karla
dc.contributor.authorAliaga, Solange
dc.contributor.authorPugin, Ángela
dc.contributor.authorAlliende, María Angélica
dc.date.accessioned2016-05-18T13:58:12Z
dc.date.available2016-05-18T13:58:12Z
dc.date.issued2016
dc.description.abstractIntellectual disability (ID) and global development delay (GDD) are caused by genetic factors such as subtelomeric rearrangements (SR) in 25 % of patients. There are several assays currently available to detect SR, but subtelomeric fluorescence in situ hybridisation (Subt-FISH) and subtelomeric multiplex ligation-dependent probe amplification (Subt-MLPA) have been the most frequently used. However, the diagnostic yield of each technique has not been compared. We reviewed the results of SR screening over a ten-year period in Chilean patients with ID/GDD using Subt-FISH and/or Subt-MLPA, compared the diagnostic yield of both tools and reviewed the corresponding literature. A total of 383 cases were included in this study, of which 53.8 % were males. The overall diagnostic yield was 8.9 % between both methods, but Subt-MLPA showed a higher performance than Subt-FISH (p = 0.002). A total of 4,181 patients with ID/GDD have been studied worldwide with Subt-MLPA and other subtelomeric assays, and 244 (5.84 %) had a pathogenic SR. It is estimated that Subt-MLPA may detect 92.6 % of the total cases with SR. The capacity of detecting tandem duplication and other critical regions, as well as the use of two MLPA kits, may explain the higher performance of this tool over Subt-FISH. Therefore, we recommend the use of this subtelomeric method as a cost-effective way to study ID/GDD patients.
dc.identifier.citationJournal of Applied Genetics, February 2016, vol. 57, n°1, p. 63-69
dc.identifier.urihttp://hdl.handle.net/11447/270
dc.identifier.urihttp://dx.doi.org/10.1007/s13353-015-0295-4
dc.language.isoen_US
dc.publisherPolish Academy of Sciences with Springer International Publishing AG,
dc.subjectIntellectual disability
dc.subjectGlobal development delay
dc.subjectSubtelomeric rearrangements
dc.subjectFluorescence in situ hybridisation
dc.subjectMultiplex ligation-dependent probe amplification
dc.titleComparison of two subtelomeric assays for the screening of chromosomal rearrangements: analysis of 383 patients, literature review and further recommendations
dc.typeArtículo

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