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Solving patients with rare diseases through programmatic reanalysis of genome-phenome data.

Published version
Peer-reviewed

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Authors

Matalonga, Leslie 
Hernández-Ferrer, Carles  ORCID logo  https://orcid.org/0000-0002-8029-7160
Piscia, Davide 
Solve-RD SNV-indel working group 
Schüle, Rebecca 

Abstract

Reanalysis of inconclusive exome/genome sequencing data increases the diagnosis yield of patients with rare diseases. However, the cost and efforts required for reanalysis prevent its routine implementation in research and clinical environments. The Solve-RD project aims to reveal the molecular causes underlying undiagnosed rare diseases. One of the goals is to implement innovative approaches to reanalyse the exomes and genomes from thousands of well-studied undiagnosed cases. The raw genomic data is submitted to Solve-RD through the RD-Connect Genome-Phenome Analysis Platform (GPAP) together with standardised phenotypic and pedigree data. We have developed a programmatic workflow to reanalyse genome-phenome data. It uses the RD-Connect GPAP's Application Programming Interface (API) and relies on the big-data technologies upon which the system is built. We have applied the workflow to prioritise rare known pathogenic variants from 4411 undiagnosed cases. The queries returned an average of 1.45 variants per case, which first were evaluated in bulk by a panel of disease experts and afterwards specifically by the submitter of each case. A total of 120 index cases (21.2% of prioritised cases, 2.7% of all exome/genome-negative samples) have already been solved, with others being under investigation. The implementation of solutions as the one described here provide the technical framework to enable periodic case-level data re-evaluation in clinical settings, as recommended by the American College of Medical Genetics.

Description

Funder: EC | EC Seventh Framework Programm | FP7 Health (FP7-HEALTH - Specific Programme "Cooperation": Health); doi: https://doi.org/10.13039/100011272; Grant(s): 305444, 305444


Funder: Ministerio de Economía y Competitividad (Ministry of Economy and Competitiveness); doi: https://doi.org/10.13039/501100003329


Funder: Generalitat de Catalunya (Government of Catalonia); doi: https://doi.org/10.13039/501100002809


Funder: EC | European Regional Development Fund (Europski Fond za Regionalni Razvoj); doi: https://doi.org/10.13039/501100008530


Funder: Instituto Nacional de Bioinformática ELIXIR Implementation Studies Centro de Excelencia Severo Ochoa


Funder: EC | EC Seventh Framework Programm | FP7 Health (FP7-HEALTH - Specific Programme "Cooperation": Health)

Keywords

Genetic Testing, Genomics, Humans, Pedigree, Rare Diseases, Sensitivity and Specificity, Software

Journal Title

Eur J Hum Genet

Conference Name

Journal ISSN

1018-4813
1476-5438

Volume Title

29

Publisher

Springer Science and Business Media LLC
Sponsorship
EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020) (779257, 825575, 779257, 779257, 825575)
Ministry of Economy and Competitiveness | Instituto de Salud Carlos III (Institute of Health Carlos III) (PT13/0001/0044, PT17/0009/0019, PT13/0001/0044, PT17/0009/0019)