Simplifying bioconjugate & ADC development 

Our full-service offering for bioconjugates/ADCs provides you with:  

  • Drug product development and manufacturing services
  • Tailored drug intermediate manufacturing
  • Process and analytical development
  • Drug substance manufacturing
  • Formulation development

All under one quality system supported by global regulatory services and writing support.

You need to pace and manage investments in the different phases of the development cycle and offer flexible business models to help meet your specific program needs. Our scientists and engineers bring a decade of development experience across a broad spectrum of both platform and novel conjugation technologies.

Services geared to enable the commercialization of your drug candidate

We have a successful track record of marketed bioconjugates. 

Our experience spans a broad range of technologies including:

  • Antibodies conjugated to nanoparticles (TNPs) and non-cytotoxic drugs (including peptides)
  • Radio-immunoconjugates (mAb conjugated to chelating agents)
  • Vaccines (haptens conjugated to carrier proteins)
  • PEGylation and cross-linking
  • ADCs

One of the first CDMOs to support the commercialization of bioconjugates

Our highly experienced regulatory affairs team can support your project at all stages of the development lifecycle from concept to commercialization. This experience allows us to advise you on developing your regulatory and submission strategies, preparing you for success.

Bioconjugation (Visp, CH)

Drug product services (Basel, CH)


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Our GS Xceed® Gene Expression System has options to engineer and express conjugation-competent antibodies. Applications include antibody-drug conjugates (ADCs), half-life extension and imaging.

Unlike other contract development and manufacturing organizations (CDMOs), we are in the unique position to offer complete development and manufacturing services from both mammalian cell culture and advanced chemical synthesis for the production of Antibody-Drug Conjugates (ADCs). From process development to manufacturing scale-up, we are proud to offer more ways than ever to deliver your product.

Visp, Switzerland

Production, Research & Development, Sales & Support

Visp 3930
Switzerland