Abstract
Purpose
Stopping rules are an essential part of risk management in early phase clinical trials. As well as being necessary for ensuring the safety of participants on clinical trials, they are also a requirement under the revision to the European Medicine Agency's first-in-human and early clinical trial guideline. The increasing complexity and size of modern trial designs (e.g. integrated trials) raise potential issues with risk management, which, if also too complex, presents challenges for both regulators and investigators to implement. Therefore, there is a clear need for a standard, template, or algorithm-based approach to risk management, in particular rules concerning adverse reactions. The purpose of this manuscript is to present template stopping (or adverse reaction, AR) rules that fulfil regulatory requirements and that can be adapted, taking into account trial design, nature of the investigational medicinal product, and anticipated effects.
Methods
The template AR rules that use a systematic, objective and consistent process were developed, taking into account severity (using an objective grading system), seriousness, frequency and reversibility of ARs. These rules control decisions relating to individual trial participants, dosing regimens and dose escalation and/or progression to successive trial parts. For ease of use, the template rules consist of a single, one-page table.
Results
The template AR rules have been successfully applied to many early phase adaptive integrated trials that received regulatory authorisation and were performed in the UK. This manuscript presents the template rule table and case studies of some trial-specific adaptations.
Conclusions
This work demonstrates how a systematic, objective and consistent approach to risk management of large integrated trials can be simple yet robust, facilitating effective decision making and trial progression whilst safeguarding participant safety.
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