Metrion Biosciences and International Scientific Consortium publish data and new recommendations for in vitro risk assessment of the cardiac safety of new medicines

Jul 27, 2020

Metrion Biosciences and International Scientific Consortium
publish data and new recommendations for in vitro risk
assessment of the cardiac safety of new medicines

Part of the US FDA’s Comprehensive in vitro Proarrythmia Assay (CiPA)
Cambridge, UK, 07 April 2020:

Metrion Biosciences Limited (Metrion), the specialist ion
channel CRO and drug discovery company, today announced it has contributed to two
new peer-reviewed papers under the U.S. Food and Drug Administration’s (FDA) CiPA
(Comprehensive in vitro Proarrhythmia Assay) initiative. The papers, in Nature Scientific
Reports1 and Toxicology and Applied Pharmacology2, focus on application of improved
cardiac safety testing protocols and recommendations for best practice for the drug
discovery industry.

The CiPA Initiative (, which began in July 2013 following a workshop at
the US FDA, has the objective to revise and enhance the regulatory framework assessing
cardiac safety of new chemical entities. Under current guidelines, new therapeutics undergo
initial assessment of proarrhythmic risk by measuring activity against the hERG cardiac ion
channel, before progressing to studies in preclinical animal models and ultimately, a
Thorough QT interval study in the clinic. The CiPA initiative aims to extend the use of
advances in early electrophysiology-based cardiac ion channel screening, in silico predictive
modelling, and human induced pluripotent stem cell derived cardiomyocytes to improve the
accuracy and reduce the cost of predicting the cardiac liability of new drug candidates.
Metrion’s research forms part of the first stage of the proposed harmonisation work, to
provide clarity on how to standardise cardiac ion channel assays to ensure they deliver
consistent data for in silico models of clinical cardiac arrythmia risk.

The first paper1, published in Nature Scientific Reports on 27th March 2020 by an international
group of authors drawn from 20 different commercial and academic laboratories, including
Metrion Biosciences, was coordinated by the Health and Environmental Sciences Institute
(HESI). It reviews data from a multi-year, multi-site collaboration across industry, academia
and the FDA regulatory agency to optimize experimental protocols and reduce experimental
variability and bias. The goal of the study was to guide the development of best practices for
the use of automated patch clamp technologies in early cardiac safety screening. High
quality in vitro cardiac ion channel data is required for accurate and reliable
characterisation of the risk of delayed repolarisation and proarrhythmia in the human heart
and to guide subsequent clinical studies and regulatory submissions.

The second paper2, to be published formally in Toxicology and Applied Pharmacology paper
on 1st May 2020 but currently available online, uses automated patch clamp data from the
CiPA consortium to address the lack of statistical quantification of variability, which hinders
the use of primary hERG potency data to predict cardiac arrhythmia. The consortium
establishes a more systematic approach to estimate hERG block potency and safety
Dr Marc Rogers, CSO, Metrion Biosciences, said: “The Metrion team has been a participant in
the international CiPA Initiative since inception and we are now pleased to be able to
announce the publication of our data from this global collaborative scientific effort. We
believe these projects will make a significant contribution to the eventual revision of cardiac
safety testing guidelines by the FDA and other international regulatory agencies. They also
contribute to deepening our knowledge of the underlying causes of proarrhythmia, which will
help prevent early attrition of potentially promising drugs.”

Contributing organisations to the Nature Scientific Reports CiPA study include: Charles River
Laboratories; Bayer AG; Sophion Bioscience A/S; Nanion Technologies; GlaxoSmithKline PLC;
Pfizer; Sanofi R&D; Astra Zeneca; B’SYS GmbH; Bristol-Myers Squibb Company; Eurofins
Discovery; Merck; Metrion Biosciences Ltd.; Natural and Medical Science Institute at the
University of Tübingen; Northwestern Feinberg School of Medicine, Chicago; Roche
Innovation Center Basel; Novoheart; Health and Environmental Sciences Institute,
Washington, DC; AbbVie.
Contributing organisations to the Toxicology and Applied Pharmacology hERG study include:
Center for Drug Evaluation and Research, Food and Drug Administration; Eli Lilly and
Company; AstraZeneca; CiPA LAB; NMI-TT GmbH; Sophion Bioscience A/S; B’SYS GmbH; The
Ion Channel Company; F. Hoffmann-La Roche AG; Eurofins Discovery; Bristol-Myers Squibb;
Merck & Co., Inc; Metrion Biosciences Ltd.; Nanion Technologies; Charles River Laboratories;
Bayer AG; University of Nottingham; Université de Lille.

1. Cross-site and cross-platform variability of automated patch clamp assessments of
drug effects on human cardiac currents in recombinant cells, Nature Scientific

2. A systematic strategy for estimating hERG block potency and its implications in a new
cardiac safety paradigm, Toxicology and Applied Pharmacology
For more information on Metrion’s fully integrated Cardiac Safety Screening / CiPA Screening
service, please visit:

Metrion Biosciences’ comprehensive cardiac safety testing ‘White Paper’ “The changing
landscape of cardiac safety” will also be available on the Company’s website from 13th April

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