Therapeutics development
We provide you with highly specific antibodies, supporting you with the development of novel therapeutics.

25,000+
Antibodies expressed
4 weeks
From Sequence to Antibody
15+
Years of CHO expertise
<1 EU/mg
endotoxin standard

Recombinant antibodies for drug development
Our custom antibody expression service delivers to customers highly specific constructs
exclusively designed to meet your unique needs, empowering you to pioneer novel
solutions and drive forward scientific breakthroughs.
More than a manufacturing partner – with more than 15 years of experience, our
experts can also offer valuable guidance for your project, providing a deeper insight into
the construct design that will optimize performance.
“Quality and reproducibility considerations are often delayed until later in vitro and early in vivo experiments. However, this may lead to irreproducible results, and miss out on identifying the best lead
candidates.”
We make your challenges our mission
Lead identification
Our expert team helps you find the antibody that fits your needs.
Time
We provide you with antibodies within 4 weeks from sequence to shipping.
Budget
Cost transparency at all times is a matter of course.
Scalability
Our CHO expression system allows scalability and reproducibility from 30ml up to 20L.
What our customers say
Long-lasting, healthy customer relationships are very important to us. Anonymity is therefore part of our corporate DNA.
Tailored Solutions for Therapeutic Development
Whether you’re an early-stage startup, a small to mid-size pharmaceutical company, a therapeutics-focused biotech or a large pharmaceutical company, we understand your specific challenges and timelines.
Large Pharmaceutical Companies with several projects in your pipeline
Complex governance structures and strict compliance requirements create high barriers for new suppliers. Batch-to-batch variability and supplier risk threaten program timelines, requiring extensive re-validation efforts. Documentation gaps can cause delays or escalations that impact critical regulatory milestones.
- Focus: Risk reduction, quality, and consistency in later-stage development
- Priority: Ensuring reliable, reproducible antibody supply with minimal risk and strict compliance
We provide reliable and reproducible antibody production with demonstrated batch-to-batch consistency, comprehensive documentation, and quality systems that meet the rigorous standards of large pharmaceutical companies. Our CHO-based platform eliminates translation risk for later-stage programs, and our 15 years of exclusive focus on recombinant antibody expression provides the established expertise and track record that large pharma requires


Small to Mid-Size Pharmaceutical Companies
Limited internal antibody development capacity and fixed budgets create bottlenecks that slow program advancement. You need reliable external partners to maintain momentum.
- Focus: Extending internal R&D capacity
- Priority: Balance of speed and cost-efficiency
We extend your internal R&D capacity with reliable execution and transparent, value-based engagement. Our predictable timelines and pricing enable you to plan confidently and advance programs efficiently.
Early-Stage Biotech
Delays in generating proof-of-concept data threaten fundraising rounds and company survival. With limited resources and aggressive timelines, every experiment must count.
- Focus: Speed to data for fundraising milestones
- Priority: Maximum flexibility under resource constraints
We provide rapid antibody production with maximum flexibility, enabling you to generate preclinical data quickly and pivot as needed – all while working within tight time and resource constraints.


Therapeutics-Focused Biotech
High scientific uncertainty combined with upcoming funding or partnering events creates intense pressure to generate reliable data quickly. Data inconsistency can derail critical decisions.
- Focus: Rapid generation of decision-relevant data
- Priority: Speed to data for funding/partnering
We deliver rapid, high-quality expression of customized antibodies to generate decision-relevant data. Our CHO-based platform minimizes uncertainty and accelerates program progress toward important funding or partnership milestones.
Our capabilities in developing therapeutic antibodies at your disposal
Since 2010, we have preformed more than 140,000 antibody production runs, expressed more than 23,000 proteins, and purified more than 20,000 antibodies. Access our expertise in the following areas:
- Fc-Silenced Antibody Expression Service
- Isotype switching
- Chimerization
- Glyco-engineering
- Bispecific and trispecific antibody production service

Our expression service by clinical stage
The production of high quality, reproducible material is critical for the development of antibody-based therapeutics. From antibody discovery to lead selection and in vivo studies, our dedicated services in antibody generation provide you with recombinant antibodies at any stage, tailored to your specific needs in terms of quality and speed of delivery.
Antibody Design

Basic research
Our more than 15 years of experience in the field of antibody generation for therapeutic applications enables us to assist you with expert knowledge on your custom antibody design.
Screening

Candidate screening
High-quality antibodies for antibody drug screening
- Accelerated High Throughput (HTP) screening support
- Ideal for high quality validation of libraries with more than 100 sequences
- Reproducible quality for future scale-up
- Transient expression in CHO cells
- High purity of >95%, low levels of endotoxin (<1 EU/mg)
Selection

Lead selection and optimization
High-quality antibodies for small-scale applications
- High consistency of the reproduced candidates
- Due diligence & lead optimization: Reformatting, Fc-engineering, subtype switching, isotype switching
- Production of approx. 20 constructs at a scale <1,000 mg
- Transient expression in CHO cells
- High purity of >95%, low levels of endotoxin (<1 EU/mg)
Large-Scale production

In vivo studies
High-quality antibody production in larger scale
- Record-setting completion times within 4 weeks
- High consistency of the reproduced candidates
- Production of approx. 3 constructs at a mg to gram scale
- Transient expression in CHO cells
- High purity of >95%, low levels of endotoxin (<1 EU/mg)
140,000+
transfections performed
25,000+
Antibodies expressed
15+ years
dedicated exclusively to recombinant antibody expression
Global reach
serving clients across Americas, Europe, Asia, and Australia
Expression Services
Service Overview
Publications with evitria
Our recombinant antibodies have been referenced as material for scientific papers over 40 times, from 2022 to 2023 only.
Find more examples of therapeutic antibody applications using glyco-engineering or bispecifc antibody production methods in our section dedicated to the publications with evitria.
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In vivo turnover and biodistribution of soluble AXL: implications for biomarker development
Olav Tenstad, Eleni Christakou et al.. Scientific Reports 01 December 2024; 14(1).
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The CD33xCD123xCD70 Multispecific CD3-Engaging DARPin MP0533 Induces Selective T Cell–Mediated Killing of AML Leukemic Stem Cells
Matteo Bianchi, Christian Reichen et al.. Cancer Immunology Research 02 July 2024; 12(7): 921-943.
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Differential effects of FcRn antagonists on the subcellular trafficking of FcRn and albumin
Guanglong Ma, Andrew R. Crowley et al.. JCI Insight 22 May 2024; 9(10).
Recommended articles
Dive into our Antibody Journal for expert insights on recombinant antibody expression, CHO cells, and bispecific antibodies.
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Antibody-Dependent Cellular Cytotoxicity (ADCC) – Definition, Mechanism & Application
Antibody-dependent cellular cytotoxicity is a key process of the immune system’s arsenal to ward off cancerous cells and infections. We show you important definitions and the ADCC mechanism and key facts on ADCC antibodies in this post.

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Afucosylated recombinant antibodies
Generally speaking, antibodies of any kind, including recombinant and afucosylated antibodies, are Y-shaped proteins produced by the human body. As they are able to identify and neutralize foreign objects – in other words viruses – they play a major contributing role in keeping our body and immune system healthy.
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Recombinant Antibodies – 7 key insights to rAbs
From the application in medicine and science to recombinant antibody production and the advantages of recombinant Abs in contrast to traditional monoclonal antibodies, this article will teach you all you need to know about recombinant antibodies.

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High-Throughput Antibody Production: A Guide to Workflows, Platforms, and Decision-Ready Data
Complete guide to High-Throughput Antibody Production: CHO-native workflow, developability screening, and decision-grade material in 4 weeks.

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The history of antibodies
Due to the Corona pandemic, the term “antibody” has become one of the buzzwords of 2020/2021. The history of antibodies, also known as immunoglobulin, of course reaches back far further than the early months of 2020 – their meaning and importance has not only started gaining relevance with the outbreak of COVID-19.
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Mammalian cell culture – Types and application
Mammalian cell culture is the process of growing cells outside their original tissue. Instead, a growth medium is used for the growth process. In this article, we will give you more details what mammalian cell culture is and what it is used for in industry and basic research in cell biology.
FAQs about Therapeutic Development in CHO-based Antibody Expression
Have questions about our antibody expression services? Find answers to the most common questions from therapeutic development team.
The standard four week delivery serves as a deliberate hallmark of scientific thoroughness that distinguishes our laboratory from high speed generalists. This timeframe allows our Zurich based experts to perform meticulous quality checks and individual cloning optimizations that automated standard procedures often overlook. Saving ten days in the discovery phase represents a net loss if a lack of thoroughness leads to developability issues or failure during critical scale up milestones.
Chinese Hamster Ovary cells represent the industry standard for manufacturing therapeutic antibodies and utilizing them from day one ensures that early discovery data remains directly relevant to clinical scale production. By eliminating the host cell variable, we prevent the “Translation Trap” where candidates optimized in HEK293 cells aggregate or fail when transitioned to CHO for manufacturing. This approach de risks the entire journey from the bench to the clinic by ensuring that the molecule screened is the molecule scaled.
Standardized robotics assisted CHO processes provide the clean training data required for predictive success in machine learning and antibody engineering. For organizations leveraging AI, the quality of the training set remains the most critical factor, so we ensure the sequence is the only variable in the expression process. By providing the cleanest possible experimental material, we ensure that digital models are trained on reliable data that is truly predictive of manufacturing success.
Our laboratory acts as a bespoke forge for challenging constructs including bispecifics and trispecifics or fusion proteins that often fail in rigid and menu driven workflows. We have produced over 25,000 antibody based molecules and consistently achieve greater than 95 percent correct pairing for complex formats such as Knobs into Holes or CrossMab. This specialization allows our partners to manage difficult structural liabilities with absolute scientific flexibility.
Absolute scientific flexibility remains the cornerstone of our partnership model because we understand that therapeutic development rarely follows a linear path. Unlike rigid providers who enforce fixed menus or predefined packages, we individually discuss and design every expression strategy to match specific preclinical objectives. This approach allows us to pivot alongside your research needs and accommodate custom optimization requests that standard high throughput platforms cannot support.
Strategic engineering options including GlymaxX for afucosylation and mAbsolve STR for Fc silencing are fully integrated into our CHO platform to optimize antibody function early in development. By incorporating these advanced technologies during the discovery phase, researchers can generate material that is already optimized for enhanced potency or reduced side effect profiles. This proactive integration provides a significant head start on developability and ensures that lead candidates are functionally superior before they reach the manufacturing stage.
Absolute flexibility across all stages of development allows us to provide scales ranging from 0.1 mg for initial screenings to 10 g for advanced in vivo studies and IND enabling work. Every project maintains a guaranteed purity of greater than 95 percent and endotoxin levels below 1 EU per mg as a standard to support the most sensitive biological assays. This consistency ensures that the data foundation remains stable as lead candidates advance through the pipeline.
Recombinant antibody production at evitria is 100 percent cell based and animal free to align with modern ethical standards and global regulatory trends. This commitment ensures a higher level of process control and consistency while meeting the zero tolerance requirements of government organizations and global pharmaceutical corporations. By removing animal derived components from the production chain, we provide a robust and traceable platform for all research applications.
Highly optimized and standardized protocols ensure that every production run remains reproducible across multiple years of a development program. We maintain detailed process documentation and utilize comprehensive analytics such as LC MS analysis to demonstrate consistency across multiple productions. This level of precision provides the decision grade data required for publications and grant applications as well as therapeutic advancement.
Services are strictly limited to the research and preclinical stages of drug discovery and our products are not for human use. The mission of evitria is to ensure that the transition of a molecule from the bench to preclinical validation is successful so that it possesses a viable path toward clinical development handled by the client. We focus exclusively on providing the high quality material required to move a candidate forward with absolute confidence.










