Taylor, C., Marschall, L., Kunzelmann, M., Richter, M., Rudolph, F., Vajda, J., Presser, B., Zahel, T., Studts, J., & Herwig, C. (2021). Integrated Process Model Applications Linking Bioprocess Development to Quality by Design Milestones. Bioengineering, 8(11), 1–16. https://doi.org/10.3390/bioengineering8110156
DoE; FMEA; QbD; bioprocess; control strategy; development; digital twin; integrated process model; risk assessment; severity rankings; statistical modelling
Maximizing the value of each available data point in bioprocess development is essential in order to reduce the time-to-market, lower the number of expensive wet-lab experiments, and maximize process understanding. Advanced in silico methods are increasingly being investigated to accomplish these goals. Within this contribution, we propose a novel integrated process model procedure to maximize the use of development data to optimize the Stage 1 process validation work flow. We generate an integrated process model based on available data and apply two innovative Monte Carlo simulation-based parameter sensitivity analysis linearization techniques to automate two quality by design activities: determining risk assessment severity rankings and establishing preliminary control strategies for critical process parameters. These procedures are assessed in a case study for proof of concept on a candidate monoclonal antibody bioprocess after process development, but prior to process characterization. The evaluation was successful in returning results that were used to support Stage I process validation milestones and demonstrated the potential to reduce the investigated parameters by up to 24% in process characterization, while simultaneously setting up a strategy for iterative updates of risk assessments and process controls throughout the process life-cycle to ensure a robust and efficient drug supply.