Comparability Studies to Support Manufacturing Process Change

During product development and the life cycle of commercial product, process changes are inevitable. Products manufactured using pre- and post- process changes are required to demonstrate comparability per ICH Q5E. A comparability study is a critical tool to ensure the “similarity” of product quality including efficacy, pharmacokinetics, safety and immunogenicity.
In this presentation, a phase appropriate risk assessment of process change will be introduced, followed by comparability strategy based on the risk assessment. Analytical comparability study tools will be discussed including the analytical comparability plan, comparability criteria, execution, data analysis and presentation. Furthermore, non-clinical and clinical comparability will be briefly discussed if there is any analytical difference which may impact product quality. Two comparability case studies will be presented. The first study is to support a new bioprocess to improve product quality and to facilitate larger scale manufacturing. The second one is to support the use of an early process stability study for establishing commercial shelf-life by leveraging the comparability study for an accelerated program. The agency feedback from multiple markets for the case studies will also be discussed.