Seattle Site Overview
Mammalian & Microbial Manufacturing Site
The Seattle campus has been producing biologics products for more than 35 years.
AGC Biologics operates multiple cGMP manufacturing lines and a variety of scales for mammalian and microbial biologics at our site. With a uni-flow design, the campus offers capacity and technological flexibility, including extensive single-use systems, while ensuring compliance with current ICH guidelines required for cGMP compliance. This location employs the latest fed-batch and perfusion manufacturing processes and serves as our center of excellence for global formulation services.
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DOWNLOAD NOWProtein Manufacturing Capabilities at AGC Biologics' Seattle Site
Flexible Mammalian Manufacturing
For GMP mammalian manufacturing, we have multiple lines with single-use and stainless steel capabilities, allowing us to tailor our equipment to each project’s needs.
- 9 x 2,000 L single-use bioreactors
- 3,000 L stainless steel bioreactors
- Dedicated expansion and harvest/capture suites
- Separate pre- and post- viral inactivation suites
- Ultrafiltration and diafiltration with manual and automated options
And through integrated partnerships, we can offer fill-finish in both the U.S. and the E.U., all under one contract.
Multi-Pack Scale-Out Strategies for Larger Quantities:
This site offers increased scale options by running multiple single-use 2,000 L bioreactors simultaneously, sequentially, or in a staggered manner. This method is designed for maximum scalability and flexibility, allowing us to tailor production as project needs evolve.
Continuous Processing with Fed-Batch and Perfusion
Using fed-batch and perfusion processes, we can support difficult-to-express molecules without costly scale-up.
State-of-the-Art Microbial Manufacturing
For GMP microbial manufacturing, our 1,500 L stainless-steel fermentation skid includes automated batch control, an 800 L media tank, and dedicated acid, base, and antifoam tanks. The suite also features centrifugation, homogenization, automated chromatography, in-suite protein analysis, 20,000 L of buffer storage, and ISO 6 areas for bulk filtration and fill.
Our capabilities also include:
- Experience across a wide range of host cells and molecule types
- Process expertise for insoluble inclusion bodies, secreted proteins, intracellular soluble proteins, and more
- Protein analytics (GMP), IPC, and release testing
Seattle Site Development & Quality Services
Cell Line Development Expertise
We offer cell line development services covering new cell line creation, cloning, cell banking, and transfer to GMP manufacturing. By using proven technology and automated screening, we are able to rapidly generate stable, high-performing cell lines for a wide range of proteins. With decades of experience, we support programs involving mAbs, bispecific antibodies, ADCs, and other complex proteins.
Transposase-mediated technology
Our team utilizes ATUM's industry-leading Leap-In Transposase® expression platform to expedite the development of:
- Stable, highly-predictive pools
- High-titer cell lines for both mAbs and complex molecules
- Accelerated timelines and reduced need for stability studies
Complex Molecule Expertise
Our Seattle site has a strong track record with difficult-to-express proteins and atypical molecules. Our scientists design and optimize processes for each molecule’s specific requirements and challenges, working closely with you to identify and implement the most effective path forward.
Process Development & Optimization
We provide comprehensive development services, supporting projects from early laboratory development through to commercial production. Our expertise covers microbial and mammalian processes, including insect cell systems, and includes reliable transfer, verification, and optimization of customer processes to ensure smooth progression across development stages.
Capability highlights:
- High-throughput systems, including the Ambr®250
- Bench and pilot plant bioreactors
- Chromatographic and tangential flow filtration (TFF) systems
Analytical & Formulation Development Leaders
Our team provides advanced analytical and formulation development services backed by expertise in structural biology, analytical characterization, and cell-based bioassays across multiple reporter systems and cell lines. We also support extended characterization and comparability studies, with qualified chromatography and electrophoresis platforms designed to deliver reliable, decision-ready data.
Learn more about our global analytical and formulation services
Technology accelerating timelines:
- High-speed mass spectrometry supports rapid analysis and turnaround times
- Multi-mode protein analysis enables faster, more informed candidate selection
- 2D-LC delivers deeper characterization and multi-attribute analysis from a single injection
Formulation Center of Excellence
Seattle is our global center of excellence for formulation, supporting the development of liquid and lyophilized drug products, including high-concentration formulations. This site serves as the hub for all lyophilization activities across our global network.
Comprehensive Quality Control
We offer full QC services, including release testing as well as drug substance (DS) and drug product (DP) stability support, backed by thorough documentation, policies, and procedures. Our approach includes site-specific processes, specifications, and records tailored to program needs, while leveraging a global network of sites with decades of biologics expertise. This shared knowledge and best-practice approach helps ensure we meet both clinical and commercial requirements.
Fill-Finish
We offer fill-finish capabilities for proteins through integrated partnerships in both the U.S. and the E.U., providing flexible, regional supply. End-to-end manufacturing and fill-finish all under one contract without having to manage multiple partners.
Regulatory Expertise
Our team in Seattle holds a strong commitment to quality with 20+ regulatory approvals from more than 10 different authorities around the globe, including:
- FDA
- EMA
- HC
- PMDA FMR
- ANVISA
- and more
EHS Certification
Our Seattle facility is committed to continuous improvement in environment, health, and safety, with robust programs in place to protect our people, our community, and the planet. This commitment is reflected in our internationally recognized certifications, including:
Seattle Campus Highlights
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Insights From Our Scientific Experts
Flexible Manufacturing That Fits Your Molecule
Hear from Hannah Hutter, one of our MSAT engineers at our Seattle facility, as she shares how AGC Biologics prioritizes flexibility in our processes, allowing us to work with complex and challenging molecules that don't fit the typical mold. Understand why our commitment to collaborative customer experiences sets us apart as the friendly CDMO expert.
Microbial Expertise that Scales Globally
Listen to our microbial MSAT expert, Levi Clark, as he discusses how AGC Biologics uses proven feeding strategies to ensure optimal cell densities and accurate expression, resulting in consistent, scalable processes. Dive into what makes AGC Biologics microbial capabilities stand out.
GLOBAL HEADQUARTERS
SEATTLE
T: +1-425-485-1900
F: +1-425-486-0300
E: contactus@agcbio.com
21511 23rd Dr. SE
Bothell, WA 98021 USA
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FAQs
For mammalian manufacturing, we offer flexible single-use scale-out production scales with 9 x 2,000 L single-use bioreactors that can be run as multi-packs in tandem or sequentially for larger scales. We also offer perfusion and fed-batch technology as well as stainless steel bioreactors up to 3,000 L.
For microbial fermentation, we offer a 1,500 L fermentation skid with automated batch controls and dedicated tanks for acid, base, and antifoam, along with an 800 L media tank.






