Diagnostic Yield of Next-generation Sequencing in Very Early-onset Inflammatory Bowel Diseases: A Multicentre Study

BACKGROUND AND AIMS: An expanding number of monogenic defects have been identified as causative of severe forms of very early-onset inflammatory bowel diseases [VEO-IBD]. The present study aimed at defining how next-generation sequencing [NGS] methods can be used to improve identification of known m...

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Detalles Bibliográficos
Autores principales: Charbit-Henrion, Fabienne, Parlato, Marianna, Hanein, Sylvain, Duclaux-Loras, Rémi, Nowak, Jan, Begue, Bernadette, Rakotobe, Sabine, Bruneau, Julie, Fourrage, Cécile, Alibeu, Olivier, Rieux-Laucat, Frédéric, Lévy, Eva, Stolzenberg, Marie-Claude, Mazerolles, Fabienne, Latour, Sylvain, Lenoir, Christelle, Fischer, Alain, Picard, Capucine, Aloi, Marina, Dias, Jorge Amil, Hariz, Mongi Ben, Bourrier, Anne, Breuer, Christian, Breton, Anne, Bronsky, Jiri, Buderus, Stephan, Cananzi, Mara, Coopman, Stéphanie, Crémilleux, Clara, Dabadie, Alain, Dumant-Forest, Clémentine, Gurkan, Odul Egritas, Fabre, Alexandre, Fischer, Aude, Diaz, Marta German, Gonzalez-Lama, Yago, Goulet, Olivier, Guariso, Graziella, Gurcan, Neslihan, Homan, Matjaz, Hugot, Jean-Pierre, Jeziorski, Eric, Karanika, Evi, Lachaux, Alain, Lewindon, Peter, Lima, Rosa, Magro, Fernando, Major, Janos, Malamut, Georgia, Mas, Emmanuel, Mattyus, Istvan, Mearin, Luisa M, Melek, Jan, Navas-Lopez, Victor Manuel, Paerregaard, Anders, Pelatan, Cecile, Pigneur, Bénédicte, Pais, Isabel Pinto, Rebeuh, Julie, Romano, Claudio, Siala, Nadia, Strisciuglio, Caterina, Tempia-Caliera, Michela, Tounian, Patrick, Turner, Dan, Urbonas, Vaidotas, Willot, Stéphanie, Ruemmele, Frank M, Cerf-Bensussan, Nadine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2018
Materias:
Original Articles
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6113703/
https://www.ncbi.nlm.nih.gov/pubmed/29788237
http://dx.doi.org/10.1093/ecco-jcc/jjy068
Descripción
Sumario:BACKGROUND AND AIMS: An expanding number of monogenic defects have been identified as causative of severe forms of very early-onset inflammatory bowel diseases [VEO-IBD]. The present study aimed at defining how next-generation sequencing [NGS] methods can be used to improve identification of known molecular diagnosis and to adapt treatment. METHODS: A total of 207 children were recruited in 45 paediatric centres through an international collaborative network [ESPGHAN GENIUS working group] with a clinical presentation of severe VEO-IBD [n = 185] or an anamnesis suggestive of a monogenic disorder [n = 22]. Patients were divided at inclusion into three phenotypic subsets: predominantly small bowel inflammation, colitis with perianal lesions, and colitis only. Methods to obtain molecular diagnosis included functional tests followed by specific Sanger sequencing, custom-made targeted NGS, and in selected cases whole exome sequencing [WES] of parents-child trios. Genetic findings were validated clinically and/or functionally. RESULTS: Molecular diagnosis was achieved in 66/207 children [32%]: 61% with small bowel inflammation, 39% with colitis and perianal lesions, and 18% with colitis only. Targeted NGS pinpointed gene mutations causative of atypical presentations, and identified large exonic copy number variations previously missed by WES. CONCLUSIONS: Our results lead us to propose an optimised diagnostic strategy to identify known monogenic causes of severe IBD.

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