Multiproduct Resin Reuse for Clinical and Commercial Manufacturing-Methodology and Acceptance Criteria

Area of Science:

• Biopharmaceutical Manufacturing
• Chromatographic Purification
• Process Development

Background:

• Chromatography resins are typically single-product dedicated, leading to underutilization in multi-product facilities.
• This single-product dedication limits resin lifespan and increases manufacturing costs.
• A need exists for efficient resin utilization strategies in biopharmaceutical production.

Purpose of the Study:

• To describe a methodology for extending the reuse of chromatography resins to multiple biopharmaceutical products.
• To ensure product quality is maintained during multiproduct resin reuse (MRR).
• To establish guidelines for monitoring and validating MRR processes.

Main Methods:

• Continuous monitoring of resin and column performance using system suitability, operating, and process parameters.
• Evaluation of product carryover (CO _{A → B}) using first principles and setting acceptance limits.
• Assessment of cleaning effectiveness through blank elution runs and sensitive analytical quantification.
• Design of small-scale chromatographic studies including process-cycling and viral clearance.

Main Results:

• Established Process Capability Limits (PCLs) for resin and column performance parameters to ensure integrity and binding capacity.
• Developed a methodology for determining and accepting product carryover (CO _{A → B}) for patient safety.
• Demonstrated that stringent cleaning validation and sensitive analytical methods are crucial for MRR.
• Small-scale studies can effectively predict resin performance, product quality, and optimize cleaning parameters for MRR.

Conclusions:

• The proposed MRR methodology allows for extended resin utilization without compromising biopharmaceutical product quality.
• Robust cleaning validation and sensitive analytical methods are critical for successful MRR.
• Small-scale studies are valuable tools for process development and optimization of MRR strategies.
• The methodology provides a framework for efficient and cost-effective biopharmaceutical purification.