Very Large-Scale (VLS) production facilities have traditionally been used for the commercial supply of biopharmaceuticals. Some commentators argue that there is no need to break with this orthodoxy. Yet many sponsor companies and CDMOs are making a concerted effort to establish continuous drug substance manufacturing. In this blog article we examine six reasons that might explain this phenomenon.
Why are so many innovator companies and contract manufacturing organizations making a concerted effort to establish continuous drug substance bioprocesses?
Historically the biopharmaceutical industry has relied on Very Large-Scale (VLS) production facilities for commercial supply. Yet there are increasingly frequent calls for innovation in antibody manufacturing1 backed by industry consortia like NIIMBL2 and the BioPhorum Operations Group3. Let’s explore some of the reasons why:
1. Productivity: Continuous manufacturing allows significantly higher productivity than fed-batch manufacturing in VLS facilities. The current state of the art for cell line development in fed-batch processes is 8+ g/L compared with equivalent titers of 30+ g/L in perfusion bioreactors4. This allows antibody production in smaller, more efficient and agile facilities that deliver extremely low Cost of Goods Manufactured (COGM) while avoiding upfront scale-up costs and risk4.
2. Production Capacity: Continuous manufacturing facilities, such as Just - Evotec Biologics J.POD® facilities, can deliver 2,000+ kg of drug substance each year and are ideal for many biotherapeutics including monoclonals, bispecific antibodies and Fc-fusion proteins. VLS facilities are designed to accommodate a small number of high-volume products.
3. Agility: Demand for biologics fluctuate throughout their lifecycle and is notoriously difficult to predict. This is especially true during both the product introduction phase and at the end of the lifecycle as sales are eroded by competing products.
Commercial demand for Enbrel®, for example, was so great when it was launched that patients’ access was restricted until the supply chain recovered6. In contrast, Biogen started investing $2 billion in VLS manufacturing at Solothurn, Switzerland in 20157 to manufacture Aduhelm®. The product was initially approved in June 2021 only for the company to announce it would halt sales due to a realignment of its Alzheimer’s disease franchise in January 20248 leaving the company to find a new use for their facility.
Continuous biomanufacturing facilities comprising of intensified single-use platforms with production-on-demand cleanrooms are extremely agile and can be built in under two years thanks to parallel construction techniques and reduced need for WFI, SIP and CIP utilities. This contrasts with stainless steel VLS facilities which take over 4 years to bring online9. They require significant amounts of capital engineering leading to high depreciation costs that must be ultimately borne by the facility occupants.
4. Supply Chain Security with Distributed Manufacturing: Global drug shortages have put the spotlight on supply chain security in the pharmaceutical industry. These have become vulnerable for several reasons including an over-reliance on small numbers of centralized facilities in a limited number of geographical regions10.
Global networks of distributed manufacturing facilities mitigate these risks and ensure the needs of local patient populations are met despite a range of scenarios that can evolve during epidemics and pandemics. This avoids an excessive reliance on non-governmental organizations corralling manufacturers to produce specific medicines or demanding elusive new business model solutions that may or may not expand access. With the aim of increasing medicine supply chain security for their population, policymakers such as the French government have chosen to invest in industrial sovereignty in the healthcare sector. The need for this was emphasised by the health crisis caused by the COVID-19 pandemic11.
5. Process Portability: VLS production processes suffer from having low process portability. Transferring between these facilities is neither fast, inexpensive or assured of success. The cost of transferring processes into a new VLS facility runs into tens of millions of dollars. Consider the bill for new consumables alone or the cost of packing chromatography columns with diameters exceeding 1.4 m with Protein A resins. Very few VLS facilities are identical despite what commentators would like us to believe.
In practice, these fixed pipe facilities must be re-engineered for each new unique product that is transferred into the asset. The sponsor must pay these CAPEX costs but also the cost of pilot and engineering runs required to mitigate scale-up risks.
Just – Evotec Biologics provide true process portability by offering partners access to its technology platform under a licensing agreement so that sponsor companies can bring their products and processes in-house and fully under their control.
6. Sustainability: Pharmaceutical and large biotechnology companies are increasingly cognizant of their environmental impact and are setting ambitious sustainability goals. Intensifying antibody production through adopting continuous manufacturing will allow these firms to manufacture their antibody products with fewer of the earth’s resources12. In contrast, VLS facilities require large amounts of carbon-intensive concrete during their construction phase. During operations they need significant amounts of energy to generate super-heated steam for SIP systems and highly purified water-for-injection needed for flushing cleaning solutions from stainless steel tanks.
References
1. Kelley, B. (2024). The history and potential future of monoclonal antibody therapeutics development and manufacturing in four eras. mAbs, 16(1). https://doi.org/10.1080/19420862.2024.2373330
2. Process Intensification Program - NIIMBL
3. BioPhorum Technology Roadmapping roadmap vision 2.0
4. J.CHO High Expression System for Continuous Manufacturing with Extraordinary Titers - Science Pool (evotec.com)
5. Garcia, F.A. & Gefroh, E. (2023) Reducing biopharmaceutical manufacturing costs through continuous processing in a flexible J.POD® facility. Drug Discovery Today, 28 (7). https://doi.org/10.1016/j.drudis.2023.103619.
6. Gellene D. Immunex says enbrel shortage worse than anticipated [Internet]. Los Angeles Times; 2002. https://www.latimes.com/ archives/la-xpm-2002-may-24-fi-immunex24-story.html
7. Biogen, awaiting FDA nod for $2B Swiss plant, plans to ship initial Aduhelm doses from North Carolina factory | Fierce Pharma
8. Biogen: how is the biotech pivoting from a failed Alzheimer's drug? (labiotech.eu)
9. FUJIFILM DIOSYNTH BIOTECHNOLOGIES BREAKS GROUND ON THE LARGEST CELL CULTURE BIOPHARMACEUTICAL CDMO FACILITY IN NORTH AMERICA | Fujifilm [United States]
10. Four ways pharma companies can make their supply chains more resilient | McKinsey
11 Evotec accelerates access to biologic therapeutics with initiation of manufacturing facility in Toulouse - Evotec Website (English)
12. Continuous Biomanufacturing Reduces Environmental Impact - Science Pool (evotec.com)