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Defining Disease Across Organisms Buffalo PRO-PO-GO May 2013 Judith Blake Jackson Laboratory.
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Transcript of Defining Disease Across Organisms Buffalo PRO-PO-GO May 2013 Judith Blake Jackson Laboratory.
![Page 1: Defining Disease Across Organisms Buffalo PRO-PO-GO May 2013 Judith Blake Jackson Laboratory.](https://reader035.fdocuments.in/reader035/viewer/2022081519/56649e205503460f94b0b714/html5/thumbnails/1.jpg)
Defining Disease Across OrganismsBuffalo PRO-PO-GOMay 2013
Judith BlakeJackson Laboratory
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Why do we need a formal disease classifications?
To search tagged dataTo aggregate datasetsTo mine data sources; eg literature, EHRsTo search coded data for sub- and superclassesTo discover novel relationships between diseases within a speciesTo discover the relationships between diseases and pathwaysTo search for related diseases between speciesTo allow stratification of disease populations
Modified from Paul Schofield 2012 ISB presentation
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Classification systems
1. those that belong to the Emperor 2. embalmed ones 3. those that are trained 4. suckling pigs 5. mermaids 6. fabulous ones 7. stray dogs 8. those included in the present
classification 9. those that tremble as if they were mad 10. innumerable ones 11. those drawn with a very fine camelhair
brush 12. others 13. those that have just broken a flower
vase 14. those that from a long way off look like
flies.
The Celestial Emporium of Benevolent Knowledge Jorge-Luis Borges
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Modified from Barry Smith 2011 DO meeting
“Defining Disease in the Genomics Era”
• A disease is: • a state that places individuals at increased risk of
adverse consequences.
• Where is the threshold for ‘adverse’ consequences (a) along the intensity dimension; (b) along the time dimension?
Science 293 (5531) I3 Aug 2001, pp. 807-808.
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Adapted from Schriml and Kibbe: ICBO submission 2013
DiseaseCellAnatomy
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What are axis and intersections for cross-organism disease representations?
• Diseases and Phenotypes – Phenoscape, Monarch, MGI, PhenomeNet
• Diseases and Taxonomic Distribution– Taxonomies, Anatomies (Uberon)
• Diseases and Genotypes– Inheritances, Complex Genotypes, Penetrance and
Susceptibility
• Diseases and Exposures– Chemicals, Pathogens, ENV, EXO, CTD
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Epidemiology Metadata
Define and Standardize: Pathogen, Host, Reservoir, Mode of Transmission, Portal of Entry, Vector,
Disease, Symptom, Geographic LocationLynn Schriml 2013
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Diseases and Phenotypes
• Diseases are (traditionally) described by signs and symptoms– Signs – things you can measure– Symptoms – things the patient notices
• Signs are phenotypes
• Diseases are characterized by phenotypes, the order, severity and duration with which they occur. A full model of disease takes into account dimensions of anatomy, time, severity, therapeutic responsiveness, outcomes etc. There is also a probabilistic element to an instance of the disease and a probabilistic association between phenotypic elements in one instance.
• Diseases are not phenotypes ( although predisposition may be considered as such) but single phenotype diseases may be viewed as phenotypes, eg. Osteoarthritis or plant rust diseases.
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Human Phenotype Ontology
• ≈ 10,500 terms• ≈ 60,000 annotations formainly Mendelian disease
Broad uptake in human genetics community
http://www.human-phenotype-ontology.orgSlide courtesy of Peter Robinson
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Marfan Syndrome: caused by mutations in fibrillin 1 gene
(top) wild-type littermates(bottom) Fbn1tm2Rmz/ Fbn1tm2Rmz
• systemic disorder of connective tissue• aortic aneurysm• partial loss of microfibrillar function
dolichostenomelia arachnodactyly micrognathia abnormal chest/rib overgrowth aortic aneurysm decreased muscle mass kyphosis premature death
Comparative Disease Phenotypes
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Formalisation and logical definitions
• PATO, EQ syntax• Phenomenet• Mousefinder
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Querying across species and time
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NCBO
NESCent(Vision, Lapp,
Balhoff, Kothari)
OBO(host of TAO, PATO, taxonomy ontology)
Applications(Phenote, OBO-Edit)
Phenotype Ontologies for Evolutionary Biology
Workshops
Database
Curator interface
Public interface
U. South DakotaAcad. Natural Sciences
(Mabee,Lundberg, Dahdul)
U. Oregon(Westerfield)
Liason to ZFIN
Liason to NCBO
Usability testing
Working groups
Morphologycollaborators
(Arratia, Coburn,Hilton, Mayden)
Ichthyology community(DeepFin, Fishbase)
Ostariophysanphenotypic
data
Kansas(Midford)
Ontology Curation
Zebrafishphenotypic& genetic
data
Ontologies(taxonomy, TAO,PATO, homology)
Todd Vision 2013
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Taxon phenotype annotations
Brachyplatystoma capapretum
round that
inheres_in some
ethmoid cartilage
exhibits some
Taxon ontology term Anatomy
ontology term
Phenotypic Quality ontology term
Links a quality to the entity that is its bearer
Todd Vision 2013
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Brachyplatystoma capapretum
round that
inheres_in some
ethmoid cartilage
exhibits some
tfap2ats213/ts213split that
inheres_in some
ethmoid cartilage
influences some
round
split
ethmoid cartilageBrachyplatystoma
tfap2a
is_avariant_of
inheres_in
inheres_in
is_a
is_a
shape
chondrocranium cartilage
olfactory region
Pimelodidae
sequence-specific DNA binding transcription factor activity
is_a
has_function is_a part_ofis_a
is_a
Todd Vision 2013
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Defining diseases and phenotypes
• Phenotypic definition of a disease permits sophisticated computational analysis within a species. However, disease classification necessary for community tagging and tracking.
• Formal definition of phenotypes allows cross-species data integration and analysis. Plant Anatomy Ontology essential to phenotype classifications
• The accuracy of the asserted hierarchy is essential for utility.
• Inaccurate structure, inappropriate relations or incomplete classes render a formal ontology worse than useless.
• For asserted structures the upper levels need to reflect the uses to which it will be put. Terminologies should be familiar to pathologists, plant biologists and other major users
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IDO scales of granularity
• Host-pathogen interactions occurs at a variety of scales
– Ecosystem
– Organism
– Organ
– Cell
– Molecule
Surveillance
Pathogenesis
Richard Scheuermann 2011
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Richard Scheuermann 2011
Infections Disease Ontology scales & branches
Scale Independent Continuant
Dependent Continuant Occurrent
Ecosystem specimen isolation source, environment
vector (role), carrier (role), population density, routes of migration (?), host (role), pathogen (role), source (?), temperature
transmission, migration, specimen isolation process, specimen isolation event
Organism NCBI taxonomy, vaccine preparation,
healthy, sick, animal model (role), viral load, latent (state), sterile eradication (state), symptoms (quality), immunogen (role), adjuvant (role), pathogen (disposition), resistant (disposition)
pathogenesis, reactivation, progression, immune response, vaccination
Organ FMA (mucosal organ - lung, secondary lymphoid organ - lymph node), pericavitary tissue, abssess
viral load (quality), inductive site (role), effective site, inflamed (quality), granuloma (quality), caseous necrosis (quality)
inflammation, tissue damage, necrosis
Cell T cell, dendritic cell Infected (quality), activated, susceptible (disposition)
antigen presentation, proliferation, phagocytosis, cytoxicity, apoptosis
Molecule Glyoxalase, catalase, recA detoxification (role), DNA lesion recognition, DNA repair, transport
catalysis, binding, transport
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Tier 1 Controlled Vocabulary/Terminology
Tier 2 Ontology/DAG
Tier 3a Diseases defined with by Phenotype terms from an ontology
Tier 3b Diseases Defined by
Phenotype terms plus quantitative
and deep phenotyping data
Tier 4 Diseases Defined using formal
logical definitions
Tier 5Formal
disease model
Indexing and simple searching
Discovery
Paul Schofiield 2013
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Tier 1 Controlled Vocabulary/Terminology
Tier 2 Ontology/DAG
Tier 3a Diseases defined with by Phenotype terms from an ontology
Tier 3b Diseases Defined by
Phenotype terms plus quantitative
and deep phenotyping data
Tier 4 Diseases Defined using formal
logical definitions
Tier 5Formal
disease modelWork
Paul Schofiield 2013
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Start from here?
• Review existing classifications: investigate, possibly emulate - – IDO (formal disease classification)– MEDIC (disease classification built on OMIM base)– Phenoscape (phenotype integration across species, anatomy-centric)– PhenomeNet– Orphanet (genetic disease classification)– Plant disease classifications
• Need extensive involvement of pathologists and biologists as well as informaticians
• Recognize differences and requirements of disease vs phenotype components, support inter-ontology constructions
• Do we need to reinvent the wheel or just pump up the tires?