MuSyC is a consensus framework that unifies multi-drug synergy metrics for combinatorial drug discovery

David J. Wooten, Christian T. Meyer, Alexander L. R. Lubbock, Vito Quaranta () and Carlos F. Lopez ()
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David J. Wooten: Pennsylvania State University
Christian T. Meyer: Vanderbilt University School of Medicine
Alexander L. R. Lubbock: Vanderbilt University Nashville
Vito Quaranta: Vanderbilt University Nashville
Carlos F. Lopez: Vanderbilt University Nashville

Nature Communications, 2021, vol. 12, issue 1, 1-16

Abstract: Abstract Drug combination discovery depends on reliable synergy metrics but no consensus exists on the correct synergy criterion to characterize combined interactions. The fragmented state of the field confounds analysis, impedes reproducibility, and delays clinical translation of potential combination treatments. Here we present a mass-action based formalism to quantify synergy. With this formalism, we clarify the relationship between the dominant drug synergy principles, and present a mapping of commonly used frameworks onto a unified synergy landscape. From this, we show how biases emerge due to intrinsic assumptions which hinder their broad applicability and impact the interpretation of synergy in discovery efforts. Specifically, we describe how traditional metrics mask consequential synergistic interactions, and contain biases dependent on the Hill-slope and maximal effect of single-drugs. We show how these biases systematically impact synergy classification in large combination screens, potentially misleading discovery efforts. Thus the proposed formalism can provide a consistent, unbiased interpretation of drug synergy, and accelerate the translatability of synergy studies.

Date: 2021
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DOI: 10.1038/s41467-021-24789-z

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