Next generation diagnostics of cystic fibrosis and CFTR-related disorders by targeted multiplex high-coverage resequencing of CFTR

D. Trujillano, M. D. Ramos, J. González, C. Tornador, F. Sotillo, G. Escaramis, S. Ossowski, L. Armengol, T. Casals, Xavier P. Estivill

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Background: Here we have developed a novel and much more efficient strategy for the complete molecular characterisation of the cystic fibrosis (CF) transmembrane regulator (CFTR) gene, based on multiplexed targeted resequencing. We have tested this approach in a cohort of 92 samples with previously characterised CFTR mutations and polymorphisms. Methods: After enrichment of the pooled barcoded DNA libraries with a custom NimbleGen SeqCap EZ Choice array (Roche) and sequencing with a HiSeq2000 (Illumina) sequencer, we applied several bioinformatics tools to call mutations and polymorphisms in CFTR. Results: The combination of several bioinformatics tools allowed us to detect all known pathogenic variants (point mutations, short insertions/deletions, and large genomic rearrangements) and polymorphisms (including the poly-T and poly-thymidine-guanine polymorphic tracts) in the 92 samples. In addition, we report the precise characterisation of the breakpoints of seven genomic rearrangements in CFTR, including those of a novel deletion of exon 22 and a complex 85 kb inversion which includes two large deletions affecting exons 4-8 and 12-21, respectively. Conclusions: This work is a proof-of-principle that targeted resequencing is an accurate and cost-effective approach for the genetic testing of CF and CFTR-related disorders (ie, male infertility) amenable to the routine clinical practice, and ready to substitute classical molecular methods in medical genetics.

Original languageEnglish
Pages (from-to)455-462
Number of pages8
JournalJournal of Medical Genetics
Volume50
Issue number7
DOIs
Publication statusPublished - 2013
Externally publishedYes

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Computational Biology
Cystic Fibrosis
Exons
Poly T
Mutation
Male Infertility
Medical Genetics
Guanine
Genetic Testing
Regulator Genes
Gene Library
Point Mutation
Thymidine
Costs and Cost Analysis
tricothecium polysaccharide

ASJC Scopus subject areas

  • Genetics
  • Genetics(clinical)

Cite this

Next generation diagnostics of cystic fibrosis and CFTR-related disorders by targeted multiplex high-coverage resequencing of CFTR. / Trujillano, D.; Ramos, M. D.; González, J.; Tornador, C.; Sotillo, F.; Escaramis, G.; Ossowski, S.; Armengol, L.; Casals, T.; Estivill, Xavier P.

In: Journal of Medical Genetics, Vol. 50, No. 7, 2013, p. 455-462.

Research output: Contribution to journalArticle

Trujillano, D, Ramos, MD, González, J, Tornador, C, Sotillo, F, Escaramis, G, Ossowski, S, Armengol, L, Casals, T & Estivill, XP 2013, 'Next generation diagnostics of cystic fibrosis and CFTR-related disorders by targeted multiplex high-coverage resequencing of CFTR', Journal of Medical Genetics, vol. 50, no. 7, pp. 455-462. https://doi.org/10.1136/jmedgenet-2013-101602
Trujillano, D. ; Ramos, M. D. ; González, J. ; Tornador, C. ; Sotillo, F. ; Escaramis, G. ; Ossowski, S. ; Armengol, L. ; Casals, T. ; Estivill, Xavier P. / Next generation diagnostics of cystic fibrosis and CFTR-related disorders by targeted multiplex high-coverage resequencing of CFTR. In: Journal of Medical Genetics. 2013 ; Vol. 50, No. 7. pp. 455-462.
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