A biomedical knowledge graph system to propose mechanistic hypotheses for real-world environmental health observations: Cohort study and informatics application

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Abstract

Background: Knowledge graphs are a common form of knowledge representation in biomedicine and many other fields. We developed an open biomedical knowledge graph-based system termed Reasoning Over Biomedical Objects linked in Knowledge Oriented Pathways (ROBOKOP). ROBOKOP consists of both a front-end user interface and a back-end knowledge graph. The ROBOKOP user interface allows users to posit questions and explore answer subgraphs. Users can also posit questions through direct Cypher query of the underlying knowledge graph, which currently contains roughly 6 million nodes or biomedical entities and 140 million edges or predicates describing the relationship between nodes, drawn from over 30 curated data sources. Objective: We aimed to apply ROBOKOP to survey data on workplace exposures and immune-mediated diseases from the Environmental Polymorphisms Registry (EPR) within the National Institute of Environmental Health Sciences. Methods: We analyzed EPR survey data and identified 45 associations between workplace chemical exposures and immune-mediated diseases, as self-reported by study participants (n= 4574), with 20 associations significant at P

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Fecho, K., Bizon, C., Miller, F., Schurman, S., Schmitt, C., Xue, W., … Tropsha, A. (2021). A biomedical knowledge graph system to propose mechanistic hypotheses for real-world environmental health observations: Cohort study and informatics application. JMIR Medical Informatics, 9(7). https://doi.org/10.2196/26714

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