Antibody CDMO Solutions

From DNA to cGMP: one trusted partner for monoclonal, bispecific, Fc-fusion, and ADC development & manufacturing.

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Scales2 L → 2,000 L
ModalitiesmAb · BsAb · Fc-Fusion · ADC
ComplianceICH & cGMP

De-risk and Accelerate Your Antibody Program

Antibody programs can stall on cell line stability, weak upstream productivity, Protein A yields, charge variants, glycan profiles, or ADC conjugation consistency. Our end-to-end CDMO offering aligns CMC strategy with your clinical goals—integrating cell line development, QbD-driven process optimization, phase-appropriate analytics, and cGMP manufacturing to deliver right-first-time results.


We solve key program pains:

  • Optimizing cell line stability and productivity
  • Improving Protein A and polishing yields
  • Controlling critical quality attributes (glycans, charge variants, aggregates)
  • Ensuring consistent ADC conjugation and Drug-to-Antibody Ratio (DAR) control
  • Navigating complex modalities (bispecifics, Fc-fusions)
  • Seamlessly scaling from bench to PPQ and commercial supply
Consult Our Antibody CMC Experts

Integrated Antibody CDMO Services

End-to-end coverage from DNA design through clinical/commercial supply, including ADC conjugation and aseptic fill/finish.

Cell Line Development

  • DNA design, vector construction (GS/DHFR systems)
  • Stable CLD (CHO-K1, CHO-GS, HEK293) with clone selection
  • High-throughput screening (titer, quality attributes)
  • MCB/WCB establishment & characterization
CHO cell culture and bioreactor upstream

Antibody Production Process Development

  • Fed-batch & perfusion process dev; media/feed optimization
  • Scale-down models & scale-up to 2,000 L single-use bioreactors
  • Polishing (IEC/HIC/SEC) to control HCP/HCDNA/aggregates
  • TFF, viral filtration, and impurity clearance validation
  • QbD/DoE for CPP/CQA mapping; process robustness studies
Antibody chromatography skids and polishing

Recombinant Antibody Production & Engineering

  • Transient expression (HEK293, CHO) for rapid material
  • Stable production for tox and cGMP batches
  • Expertise in diverse formats (scFv, Fab, BsAb, Fc-fusion)
  • Fc engineering for half-life extension or effector function
  • Site-specific conjugation and labeling
Antibody modalities and engineering

Antibody Quality Studies

  • Release & characterization: SEC-HPLC, CE-SDS, icIEF, LC-MS
  • Glycan & charge variant profiling (CQA monitoring)
  • Bioassays (ADCC/CDC/potency)
  • Impurity analysis (HCP, HCDNA, leachables)
  • Comprehensive batch records, CoA, and regulatory support
Antibody analytics and quality control

ADC Conjugation, Fill/Finish & cGMP

  • Linker-payload selection (e.g., vc-MMAE, SMCC, site-specific)
  • Controlled DAR, free drug & residuals monitoring
  • Formulation (liquid/lyo) and container-closure screening
  • Aseptic filling, visual inspection, labeling & packaging
  • Clinical (Phase I–III) & commercial manufacturing, PPQ
ADC conjugation and aseptic filling

End-to-End Antibody CDMO Workflow

Transparent, phase-gated milestones to ensure tech-transferability and regulatory readiness—from DNA to PPQ.

Initial discussion on your antibody, goals, and regulations.

Generate/optimize stable, high-yield cell lines for robust expression.

Optimize cell culture, bioreactor parameters to maximize quality at scale.

Develop efficient purification for high purity/recovery.

Produce antibody under manufacturing practice for clinical/commercial supply.

Project Consultation & Design

Initial discussion on your antibody, goals, and regulations.

1

Cell Line Development

Generate/optimize stable, high-yield cell lines for robust expression.

2

Upstream Process Development

Optimize cell culture, bioreactor parameters to maximize quality at scale.

3

Downstream Process Development

Develop efficient purification for high purity/recovery.

4

Manufacturing Practice

Produce antibody under manufacturing practice for clinical/commercial supply.

5
Stage Services Key Technologies & Readouts
Project Consultation & Design Initial discussion on antibody goals and regulations. DNA design, codon optimization, vector selection (GS/DHFR), and developability assessment. Sequence liability review; Fc engineering; regulatory strategy planning.
Cell Line Development Generate and optimize stable, high-yield cell lines (CHO/HEK) for robust expression. Clone screening & banking (MCB/WCB). High-throughput screening (titer, quality); glycan/charge variant profiling; monoclonality assurance.
Upstream Process Dev Optimize cell culture and bioreactor parameters. Fed-batch/perfusion process dev; media/feed optimization. QbD/DoE; PAT; scale-down models; seamless scale-up to 2,000 L.
Downstream Process Dev Develop efficient purification for high purity/recovery. Protein A capture, viral inactivation, and polishing steps (e.g., IEC, HIC). Impurity clearance validation (HCP/HCDNA); aggregation control; viral filtration; TFF.
Manufacturing Practice Produce antibody under cGMP for clinical/commercial supply. Includes analytical method qualification, formulation, stability studies, and aseptic fill/finish. cGMP up to 2,000 L; batch release & CoA; IND/IMPD support; PPQ runs.
Start Your CMC Plan

Key Platforms for Antibodies

Purpose-built cell lines, process modes, and modalities to match your product’s CQAs and clinical strategy.

Cell Lines (CHO & HEK)

Industry-standard hosts optimized for productivity and human-like PTMs.

  • CHO-GS, CHO-K1, HEK293 stable/transient expression
  • Clone selection to target titer & quality
  • Glycan fine-tuning & charge variant control

Process Modes

Fed-batch for simplicity and perfusion for fragile or high-productivity molecules.

  • DoE-guided media & feed design
  • PAT for real-time control of CPPs
  • Seamless scale-up to 2,000 L SUBs

Modalities

From classic IgG1 to complex formats and conjugates.

  • mAbs, BsAbs/tri-specifics, Fc-fusions
  • Knobs-into-holes, CrossMab, linker engineering
  • ADC (site-specific or stochastic) with DAR control

Analytics

Phase-appropriate methods to support release, stability, and comparability.

  • SEC-HPLC, CE-SDS, icIEF, LC-MS intact/subunits
  • Glycan mapping; charge/size variants
  • Bioassays (binding, ADCC/CDC, potency)
Get a Platform-Specific Quote

Diverse Antibody Format Capabilities

Our platform supports a comprehensive range of engineered antibody formats, from simple fragments to complex multispecifics, including but not limited to those shown below.

sdAb format

sdAb

A single-domain antibody (sdAb) derived from camelids, offering high stability and small size.

scFv format

scFv

A fusion protein of the variable regions (VL and VH) connected by a flexible linker.

Bispecific scFv format

Bispecific scFv

Two scFv fragments linked together, enabling simultaneous binding to two different targets.

sdAb-scFv format

sdAb-scFv

A chimeric format combining the small size of a sdAb with the binding of an scFv.

Diabody format

Diabody

A dimeric scFv format with short linkers, forcing non-covalent association of two chains.

Triabody format

Triabody

A trimeric, non-covalent complex of scFv fragments, typically for trivalent binding.

Minibody format

Minibody

A bivalent fragment (scFv) fused to a human IgG1 CH3 domain for dimerization.

Camelid heavy chain antibody format

Camelid heavy chain antibody

The full-length heavy-chain-only antibody found in camelids, from which sdAbs are derived.

Fab format

Fab

The 'Fragment, antigen-binding' region, consisting of one constant and one variable domain from each chain.

scFab format

scFab

A single-chain Fab fragment where variable and constant domains are connected by linkers.

F(ab)2 format

F(ab)2

Two Fab fragments linked by disulfide bonds at the hinge region, creating a bivalent molecule.

Bispecific F(ab)2 format

Bispecific F(ab)2

An engineered F(ab)2 format capable of binding to two distinct target antigens.

Trispecific F(ab)2 format

Trispecific F(ab)2

A highly engineered format designed to bind three different targets simultaneously.

Fc format

Fc

The 'Fragment, crystallizable' region, responsible for effector functions and half-life.

scFv-Fc format

scFv-Fc

A bivalent format fusing an scFv to an Fc domain, mimicking a full antibody's structure.

Fc fusion format

Fc fusion

A therapeutic protein created by fusing an Fc domain to a receptor, ligand, or peptide.

Inquire About Your Format

Built-In Quality & Regulatory Readiness

Our cGMP-aligned Quality Management System embeds QbD principles, data integrity (ALCOA+), and phase-appropriate controls across the lifecycle. Independent QA/QC oversight, validated analytical methods, and audit-ready documentation support smooth interactions with global agencies.


For antibodies and ADCs, we emphasize viral safety (inactivation/filtration), impurity control (HCP/HCDNA), and product-specific CQAs (glycans, charge variants, aggregates, DAR). We provide comprehensive regulatory documentation for IND/IMPD and scale with you through PPQ and commercial supply.

cGMP COMPLIANT
QbD / DoE
ALCOA+ DATA INTEGRITY
IND / IMPD / PPQ SUPPORT
Review Our Quality Systems

What Our Partners Say

Biotech and pharma teams trust us for antibody and ADC programs from IND to PPQ.

★★★★★

“Creative Biolabs was instrumental in rescuing our difficult BsAb program. Their team quickly implemented a high-yield perfusion upstream process and developed a tailored polishing train. Most importantly, they successfully controlled the complex glycan and charge variants to meet our stringent specifications, allowing us to proceed with our IND filing on time.”

Dr. L. Nguyen VP CMC, Oncology Biotech
★★★★★

“We were impressed by the precision of their ADC team. They consistently nailed our target DAR of 3.5 and minimized free drug to well below our action limits. The final data package, including the comprehensive stability plan, was so thorough that it passed our internal QA review on the very first pass without any revisions.”

M. Patel Director, Bioconjugates, Pharma
★★★★★

“The clear, proactive communication and their realistic, phase-appropriate approach were exactly what we needed. Their scientific team anticipated challenges and scaled seamlessly with us. We were able to move from pre-clinical tox batches directly into Phase 2 cGMP supply, all without the headache of changing CDMOs.”

S. Romero COO, Immunology Startup
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Frequently Asked Questions

Quick answers on platforms, timelines, analytics, and ADC specifics.

Which cell line do you recommend for my antibody?

CHO is the industry standard for therapeutic antibodies, with GS or DHFR systems for stable expression. HEK293 can be used for rapid transient material or specific PTM needs. We evaluate desired CQAs (glycans, charge), timelines, and scale to recommend the best fit.

Can you support bispecifics and complex formats?

Yes. We handle knobs-into-holes, CrossMab, dual-variable domains, and Fc-fusions. Our upstream and polishing strategies address mispairing, aggregation, and variant control, supported by intact/subunit LC-MS and functional bioassays.

How do you ensure ADC DAR and impurity control?

We apply platform and molecule-specific conjugation methods (site-specific or stochastic) with tight process windows. Analytics include DAR distribution, free drug, residual solvents/reagents, and potency. Formulation work mitigates aggregation and payload loss.

What’s your typical IND timeline support?

We design a phase-gated plan covering tox material, IND-enabling lots, and Phase 1 supply, with parallel method qualification and stability. A dedicated PM drives risk management and schedule integrity across workstreams.

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