Tag Archives: Drug safety

Arrhythmic risk: regression, single cell biophysics, or big tissue simulations?

On the 15th March I presented at an FDA public Advisory Committee hearing on the proposals of the CiPA initative. CiPA aims to replace the current testing for increased drug-induced Torsade de Pointes (TdP) arrhythmic risk, which is a human … Continue reading

Posted in Action Potential Models, Tissue Simulations, Drug action, Future developments, Safety Pharmacology, Model Development | Tagged , , , , , , , | 1 Comment

Uncertainty quantification for ion channel screening and risk prediction

This post accompanies our new paper in Wellcome Open Research. Regular readers of this blog will know that I worry about uncertainty in the numbers we are using to model drug action on electrophysiology quite a lot – see our … Continue reading

Posted in Drug action, Model Development, Safety Pharmacology, Stats and Inference | Tagged , , , , , , , , , | 4 Comments

Should I work with IC50s or pIC50s?

When you are expressing how much a drug inhibits something, it’s common to fit a Hill curve through a graph of concentration against % inhibition as shown here: In our case this is often ‘% inhibition’ for a given ionic … Continue reading

Posted in Drug action, Safety Pharmacology, Stats and Inference | Tagged , , , , , , , , , , , , | 1 Comment

Are 30 compounds enough to test our simulations?

I’ve just contributed to a new review ‘Recent developments in using mechanistic cardiac modelling for drug safety evaluation’, which discusses where we are with using mathematical models of the electrical activity of cardiac muscle cells to predict whether new drugs … Continue reading

Posted in Action Potential Models, Drug action, Ion Channel Models, Safety Pharmacology, Stats and Inference | Tagged , , , , | 7 Comments

In-silico Action Potential Prediction Web Portal

This post is to announce that we are making our in-silico action potential prediction web portal (AP-predict) available for public use. The portal is free, you just need to register for an account. We’d be happy to have any feedback on … Continue reading

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