Design of a New Elastomer Formulation for Lyophilization Applications

West and Corning Launch Viridian™ Vials that provide both performance and sustainability to the healthcare industry

There are two major themes that involve primary packaging components in the revised EU GMP Annex 1 issued in August 2023. This recent revision includes: Implementing a holistic Contamination Control Strategy (CCS) Container Closure Integrity (CCI) because a properly seated stopper represents an adequate microbiological barrier. Pharmaceutical manufacturers must develop a CCS detailing the risks and mitigations within their operations, associated with contamination event opportunities with the emphasis being on personnel awareness, quality culture and controls, with focus on the principles involved in the protection of sterile product during the manufacturing, packaging and distribution processes.
This is why it is important to consider packaging decisions early in the development process. We will examine how primary packaging materials can impact your CCS and showcase West’s approach to mitigating risk on behalf of drug developers.

Advanced therapies are rapidly becoming a reality, targeting unmet patient needs and treatments for diseases with limited therapeutic options. Some advanced therapies, such as gene therapy and mRNA, require cryopreservation due to their fragile nature at room temperature, putting unprecedented expectations on the packaging systems to maintain Container Closure Integrity (CCI) during storage at -80°C. The quality, patient safety, and high value of these therapeutics can be jeopardized if the chosen containment system doesn’t consistently maintain a sterile barrier from when the drug is packed through to administration to the patient. During cooling between room temperature and -80°C, common vial system components such as glass vials, elastomeric closures, and aluminum seals exhibit contraction and changes in physico-mechanical properties. These changes in material properties and component dimensions may affect the system’s ability to maintain closure integrity, resulting in the formation of transient leaks.
In this joint study conducted by West and Corning, we discuss results from four experiments that explore the influences of capping pressure, cooling rate, dimensional changes, and long-term storage at -80°C on the system’s ability to maintain closure integrity. Both Helium leak testing and laser-based gas headspace analysis were used to monitor the closure integrity. The key result of the study is a combination of vial system components and capping conditions that maintain container closure integrity when cooled to and stored at -80°C

Our healthcare industry is evolving. The move from IV to SC injection is being driven by lifecycle management, biosimilar adoption, and the hospital to home trend. Molecules are getting more complex, and patients drive the preference for self-administration resulting in the need for more complex combination product development and quick scale up. We will present innovative solutions to these challenges to help speed up drug development and enable patient choice with: A 2.25mL polymer container system for auto-injectors which protects sensitive molecules A large volume cartridge plunger to enable primary containment within an on-body delivery system A small pack, high quality glass containment system to enable quick delivery in early-stage development