Cited by 1,501Computational Drug Discovery MethodsPharmacovigilance and Adverse Drug ReactionsBioinformatics and Genomic Networks

Modeling polypharmacy side effects with graph convolutional networks

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Zitnik, Marinka, Agrawal, Monica, Leskovec, Jure·2018·Bioinformatics

Published version of a preprint

Abstract

Motivation: The use of drug combinations, termed polypharmacy, is common to treat patients with complex diseases or co-existing conditions. However, a major consequence of polypharmacy is a much higher risk of adverse side effects for the patient. Polypharmacy side effects emerge because of drug–drug interactions, in which activity of one drug may change, favorably or unfavorably, if taken with another drug. The knowledge of drug interactions is often limited because these complex relationships are rare, and are usually not observed in relatively small clinical testing. Discovering polypharmacy side effects thus remains an important challenge with significant implications for patient mortality and morbidity. Results: Here, we present Decagon, an approach for modeling polypharmacy side effects. The approach constructs a multimodal graph of protein–protein interactions, drug–protein target interactions and the polypharmacy side effects, which are represented as drug–drug interactions, where each side effect is an edge of a different type. Decagon is developed specifically to handle such multimodal graphs with a large number of edge types. Our approach develops a new graph convolutional neural network for multirelational link prediction in multimodal networks. Unlike approaches limited to predicting simple drug–drug interaction values, Decagon can predict the exact side effect, if any, through which a given drug combination manifests clinically. Decagon accurately predicts polypharmacy side effects, outperforming baselines by up to 69%. We find that it automatically learns representations of side effects indicative of co-occurrence of polypharmacy in patients. Furthermore, Decagon models particularly well polypharmacy side effects that have a strong molecular basis, while on predominantly non-molecular side effects, it achieves good performance because of effective sharing of model parameters across edge types. Decagon opens up opportunities to use large pharmacogenomic and patient population data to flag and prioritize polypharmacy side effects for follow-up analysis via formal pharmacological studies. Availability and implementation: Source code and preprocessed datasets are at: http://snap.stanford.edu/decagon.

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  • GCNNs have been used to model drug combinations, drug-target interactions, and multiple property predictions.

    “GCNNs have been used to model drug combinations (90), drug-target interactions (91), and multiple property predictions (92).”
  • Geometric deep-learning models optimized on large medical KGs can match disease signatures to therapeutic candidates based on networks perturbed in disease.

    “To provide therapeutic predictions, geometric deep-learning models optimized on large medical KGs15 can match disease signatures to therapeutic candidates based on networks perturbed in disease15–18.”

    From A foundation model for clinician-centered drug repurposing (2024) · cites this paper as [18]

  • The standard benchmarking strategy used to evaluate drug-repurposing AI models aligns with the approach predominantly used in the literature.

    “This evaluation method aligns with the approach predominantly used in the literature12,14–16,18–20.”

    From A foundation model for clinician-centered drug repurposing (2024) · cites this paper as [18]

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  1. Defferrard M. et al (2016) Convolutional neural networks on graphs with fast localized spectral filtering. In NIPS, Vol. 30. pp. 3844–3852.

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Authors
Zitnik, M., Agrawal, M., & Leskovec, J.
Affiliations
  • Department of Computer Science, Stanford University, Stanford, CA, USA
  • Stanford University (US)
  • Chan Zuckerberg Biohub San Francisco (US)
Corresponding author
Leskovec, Jure
Venue
Bioinformatics
Published
2018-06-27
Volume
34
Issue
13
Pages
i457-i466
ISSN
  • 1367-4803 (ISSN-L)
  • 1367-4811
OpenAlex
W2786016794
Cited by
1,501
References
70
Citations by year
2026: 255 · 2025: 229 · 2024: 165 · 2023: 196 · 2022: 192 · 2021: 217 · 2020: 162 · 2019: 71 · 2018: 13
FWCI
86.95
Type
journal article
Language
en
Open access
Locations
  • Bioinformatics (publishedVersion, cc-by-nc)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • NSF (IIS-1149837)
  • NIH (BD2K U54EB020405)
  • DARPA SIMPLEX
  • Stanford Data Science Initiative
  • Chan Zuckerberg Biohub
Topics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Toxicology › Pharmacovigilance and Adverse Drug Reactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
polypharmacy, drug-drug interactions, adverse drug reactions, drug side effect prediction, multimodal graphs, graph convolutional networks, protein-protein interaction, decagon
MeSH terms
Data Visualization, Drug Interactions, Female, Humans, Models, Biological, Software, Neural Networks, Computer, Computational Biology, Polypharmacy, Protein Interaction Maps, Drug-Related Side Effects and Adverse Reactions

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