What does this research mean for the field?

The implementation of the ICH E14/S7B Q&A guidelines has streamlined drug-induced QTc assessments, reducing the proportion of thorough QT studies by 34% and decreasing median sample sizes by up to 67% through the increased use of concentration-QTc modeling. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

June 25, 2025Journal of Pharmacokinetics and PharmacodynamicsOpen Access

FDA's insights: implementing new strategies for evaluating drug-induced QTc prolongation

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Structured PICO

Population

424 QT study reports reviewed by the FDA between January 2016 and August 2024

Intervention

Alternative QTc assessment approaches (ICH E14 Q&A 5.1 and 6.1, C-QTc modeling, integrated nonclinical risk assessment)

Comparator

Traditional Thorough QT (TQT) studies

Outcome

Trends in E14 approaches and reduction in sample sizes for QTc assessment studies

The implementation of ICH E14/S7B advancements, including C-QTc modeling and alternative approaches, has significantly reduced the need for resource-intensive Thorough QT studies and decreased clinical trial sample sizes.

Limitations

Did not systematically track the frequency with which QTc assessment requests utilizing the 5.1 approach were not accepted by the FDA
Did not evaluate how often nonclinical data (e.g., hERG affinity or animal models) translate into clinical QTc prolongation findings

Discussion

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Implication

Guideline-driven C-QTc adoption cuts TQT studies and sample sizes; leaves open optimal cardiac safety integration in drug development.

Cite This Study

Ji et al. (2025) studied this question.

synapsesocial.com/papers/6a1d1fa7748c408e6fd3146a https://doi.org/10.1007/s10928-025-09985-4

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FDA's insights: implementing new strategies for evaluating drug-induced QTc prolongation

Structured PICO

Limitations

Discussion

Implication

Cite This Study

FDA's insights: implementing new strategies for evaluating drug-induced QTc prolongation

Structured PICO

Limitations

Discussion

Implication

Cite This Study

Also Consider

Also Consider