Applications of Quality by Design in Pharmaceutical Product Development Lifecycle

Quality by Design (QbD) is a contemporary methodology that guarantees the quality of pharmaceuticals by implementing a methodical and evidence-based approach throughout the pharmaceutical product development lifecycle (PPDL). The implementation of QbD throughout the PPDL has emerged as a key focus area for both regulatory bodies and the pharmaceutical sector. The foundation of QbD lies in the guidelines established by the International Council for Harmonization of Technical Requirements for Pharmaceuticals for Human Use (ICH) specifically, (ICH Q8, Q9, Q10 & Q11) for pharmaceutical development, quality risk management, pharmaceutical quality and development & manufacture of drug substances respectively. The utilization of QbD begins at the early stages of product development, where critical quality attributes (CQAs) are identified based on the desired therapeutic effect and patient needs. These CQAs serve as the foundation for subsequent formulation and process design. Design of experiments (DOE) and risk assessment are two QbD methods that assist in identifying and optimizing key process parameters influencing CQAs. Additionally, the implementation of process analytical technology (PAT) enables monitoring in real time and control of critical process parameters (CPPs) facilitating the manufacturing of high-quality products. Furthermore, the use of QbD in the PPDL brings numerous benefits, including enhanced product quality, reduced variability, improved process understanding, and increased regulatory compliance. In this chapter, some valuable insights on QbD applications viz.; API, development of formulation, quality assurance, packaging, clinical trial, biopharmaceutics and biosimilars etc. are described along with case studies.