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© Research
Publication : European journal of human genetics : EJHG

Detecting splicing patterns in genes involved in hereditary breast and ovarian cancer

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in European journal of human genetics : EJHG - 26 Jul 2017

Davy G, Rousselin A, Goardon N, Castéra L, Harter V, Legros A, Muller E, Fouillet R, Brault B, Smirnova AS, Lemoine F, de la Grange P, Guillaud-Bataille M, Caux-Moncoutier V, Houdayer C, Bonnet F, Blanc-Fournier C, Gaildrat P, Frebourg T, Martins A, Vaur D, Krieger S

Link to Pubmed [PMID] – 28905878

Eur. J. Hum. Genet. 2017 Oct;25(10):1147-1154

Interpretation of variants of unknown significance (VUS) is a major challenge for laboratories performing molecular diagnosis of hereditary breast and ovarian cancer (HBOC), especially considering that many genes are now known to be involved in this syndrome. One important way these VUS can have a functional impact is through their effects on RNA splicing. Here we present a custom RNA-Seq assay plus bioinformatics and biostatistics pipeline to analyse specifically alternative and abnormal splicing junctions in 11 targeted HBOC genes. Our pipeline identified 14 new alternative splices in BRCA1 and BRCA2 in addition to detecting the majority of known alternative spliced transcripts therein. We provide here the first global splicing pattern analysis for the other nine genes, which will enable a comprehensive interpretation of splicing defects caused by VUS in HBOC. Previously known splicing alterations were consistently detected, occasionally with a more complex splicing pattern than expected. We also found that splicing in the 11 genes is similar in blood and breast tissue, supporting the utility and simplicity of blood splicing assays. Our pipeline is ready to be integrated into standard molecular diagnosis for HBOC, but it could equally be adapted for an integrative analysis of any multigene disorder.

https://www.ncbi.nlm.nih.gov/pubmed/28905878