Human phenotype ontology annotation and cluster analysis to unravel genetic defects in 707 cases with unexplained bleeding and platelet disorders

Background Heritable bleeding and platelet disorders (BPD) are heterogeneous and frequently have an unknown genetic basis. The BRIDGE-BPD study aims to discover new causal genes for BPD by high throughput sequencing using cluster analyses based on improved and standardised deep, multi-system phenotyping of cases. Methods We report a new approach in which the clinical and laboratory characteristics of BPD cases are annotated with adapted Human Phenotype Ontology (HPO) terms. Cluster analyses are then used to characterise groups of cases with similar HPO terms and variants in the same genes. Results We show that 60% of index cases with heritable BPD enrolled at 10 European or US centres were annotated with HPO terms indicating abnormalities in organ systems other than blood or blood-forming tissues, particularly the nervous system. Cases within pedigrees clustered closely together on the bases of their HPO-coded phenotypes, as did cases sharing several clinically suspected syndromic disorders. Cases subsequently found to harbour variants in ACTN1 also clustered closely, even though diagnosis of this recently described disorder was not possible using only the clinical and laboratory data available to the enrolling clinician. Conclusions These findings validate our novel HPO-based phenotype clustering methodology for known BPD, thus providing a new discovery tool for BPD of unknown genetic basis. This approach will also be relevant for other rare diseases with significant genetic heterogeneity..

Medienart:

E-Artikel

Erscheinungsjahr:

2015

Erschienen:

2015

Enthalten in:

Zur Gesamtaufnahme - volume:7

Enthalten in:

Genome medicine - 7(2015), 1 vom: 09. Apr.

Sprache:

Englisch

Beteiligte Personen:

Westbury, Sarah K [VerfasserIn]
Turro, Ernest [VerfasserIn]
Greene, Daniel [VerfasserIn]
Lentaigne, Claire [VerfasserIn]
Kelly, Anne M [VerfasserIn]
Bariana, Tadbir K [VerfasserIn]
Simeoni, Ilenia [VerfasserIn]
Pillois, Xavier [VerfasserIn]
Attwood, Antony [VerfasserIn]
Austin, Steve [VerfasserIn]
Jansen, Sjoert BG [VerfasserIn]
Bakchoul, Tamam [VerfasserIn]
Crisp-Hihn, Abi [VerfasserIn]
Erber, Wendy N [VerfasserIn]
Favier, Rémi [VerfasserIn]
Foad, Nicola [VerfasserIn]
Gattens, Michael [VerfasserIn]
Jolley, Jennifer D [VerfasserIn]
Liesner, Ri [VerfasserIn]
Meacham, Stuart [VerfasserIn]
Millar, Carolyn M [VerfasserIn]
Nurden, Alan T [VerfasserIn]
Peerlinck, Kathelijne [VerfasserIn]
Perry, David J [VerfasserIn]
Poudel, Pawan [VerfasserIn]
Schulman, Sol [VerfasserIn]
Schulze, Harald [VerfasserIn]
Stephens, Jonathan C [VerfasserIn]
Furie, Bruce [VerfasserIn]
Robinson, Peter N [VerfasserIn]
van Geet, Chris [VerfasserIn]
Rendon, Augusto [VerfasserIn]
Gomez, Keith [VerfasserIn]
Laffan, Michael A [VerfasserIn]
Lambert, Michele P [VerfasserIn]
Nurden, Paquita [VerfasserIn]
Ouwehand, Willem H [VerfasserIn]
Richardson, Sylvia [VerfasserIn]
Mumford, Andrew D [VerfasserIn]
Freson, Kathleen [VerfasserIn]

Links:

Volltext [kostenfrei]

Themen:

Bleeding Symptom
Index Case
Laboratory Test Result
Mean Platelet Volume
Pathogenic Variant

Anmerkungen:

© Westbury et al.; licensee BioMed Central. 2015. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (

doi:

10.1186/s13073-015-0151-5

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

SPR030623715