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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Biomed+Semantics
2016 ; 7
(ä): 8
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Linking rare and common disease: mapping clinical disease-phenotypes to
ontologies in therapeutic target validation
#MMPMID27011785
Sarntivijai S
; Vasant D
; Jupp S
; Saunders G
; Bento AP
; Gonzalez D
; Betts J
; Hasan S
; Koscielny G
; Dunham I
; Parkinson H
; Malone J
J Biomed Semantics
2016[]; 7
(ä): 8
PMID27011785
show ga
BACKGROUND: The Centre for Therapeutic Target Validation (CTTV -
https://www.targetvalidation.org/) was established to generate therapeutic target
evidence from genome-scale experiments and analyses. CTTV aims to support the
validity of therapeutic targets by integrating existing and newly-generated data.
Data integration has been achieved in some resources by mapping metadata such as
disease and phenotypes to the Experimental Factor Ontology (EFO). Additionally,
the relationship between ontology descriptions of rare and common diseases and
their phenotypes can offer insights into shared biological mechanisms and
potential drug targets. Ontologies are not ideal for representing the sometimes
associated type relationship required. This work addresses two challenges;
annotation of diverse big data, and representation of complex, sometimes
associated relationships between concepts. METHODS: Semantic mapping uses a
combination of custom scripting, our annotation tool 'Zooma', and expert
curation. Disease-phenotype associations were generated using literature mining
on Europe PubMed Central abstracts, which were manually verified by experts for
validity. Representation of the disease-phenotype association was achieved by the
Ontology of Biomedical AssociatioN (OBAN), a generic association representation
model. OBAN represents associations between a subject and object i.e., disease
and its associated phenotypes and the source of evidence for that association.
The indirect disease-to-disease associations are exposed through shared
phenotypes. This was applied to the use case of linking rare to common diseases
at the CTTV. RESULTS: EFO yields an average of over 80% of mapping coverage in
all data sources. A 42% precision is obtained from the manual verification of the
text-mined disease-phenotype associations. This results in 1452 and 2810
disease-phenotype pairs for IBD and autoimmune disease and contributes towards
11,338 rare diseases associations (merged with existing published work [Am J Hum
Genet 97:111-24, 2015]). An OBAN result file is downloadable at
http://sourceforge.net/p/efo/code/HEAD/tree/trunk/src/efoassociations/. Twenty
common diseases are linked to 85 rare diseases by shared phenotypes. A
generalizable OBAN model for association representation is presented in this
study. CONCLUSIONS: Here we present solutions to large-scale annotation-ontology
mapping in the CTTV knowledge base, a process for disease-phenotype mining, and
propose a generic association model, 'OBAN', as a means to integrate disease
using shared phenotypes. AVAILABILITY: EFO is released monthly and available for
download at http://www.ebi.ac.uk/efo/.