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Cardiac toxicity predictions: Safety pharmacologists correlate with the CiPA model

Hitesh B. Mistry, View ORCID ProfileJaimit Parikh
doi: https://doi.org/10.1101/2020.06.11.144238
Hitesh B. Mistry
1Division of Pharmacy, University of Manchester, UK
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  • For correspondence: hitesh.mistry@manchester.ac.uk
Jaimit Parikh
2IBM Research Center, New York, USA
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Abstract

There has been a lot of interest and publicity regarding the use of a complex biophysical model within drug development for predicting the TdeP risk of new compounds. Throughout the development of the complex model numerous groups have shown that a simple linear mechanistic model explains the predictive behaviour of complex mechanistic models. That is the input-output relationship is almost linear even when complex kinetic assays are used. We hypothesized that given this linear relationship that scientist would be able to predict the outcome of the biophysical model. The objective of this pilot study was to assess the feasibility of such an analysis but also assess the initial degree of correlation. A set of 15 compounds with diverse ion-channel blocking against 4 ion-channel currents, IKr, ICaL, INa and INaL, was generated. Safety pharmacologists across numerous companies were approached and asked to categorize the TdeP risk of these compounds using only the % block depicted via a bar chart into one of 3 categories: Risk, No-risk or Unsure. 12 scientists participated in the study, of which 11 correlated strongly with the model (11 person ROC AUC range: 0.86-1, 7 scientists had a value >0.9). The combined prediction of all scientists also correlated strongly with the model. These results highlight that the linear input-output relationship can indeed be predicted by the scientist. A future study exploring the degree of correlation with a wider group of scientists and wider set of compounds would be required to get a more precise estimate of the correlation. We hope this initial exploratory study will encourage the community to pursue this idea.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted June 12, 2020.
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Cardiac toxicity predictions: Safety pharmacologists correlate with the CiPA model
Hitesh B. Mistry, Jaimit Parikh
bioRxiv 2020.06.11.144238; doi: https://doi.org/10.1101/2020.06.11.144238
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Cardiac toxicity predictions: Safety pharmacologists correlate with the CiPA model
Hitesh B. Mistry, Jaimit Parikh
bioRxiv 2020.06.11.144238; doi: https://doi.org/10.1101/2020.06.11.144238

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