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Nexelis acquires the GSK vaccines clinical bioanalytical laboratory located in Marburg – Germany and enters into a 5-year strategic agreement with GSK.

Nexelis acquires the GSK vaccines clinical bioanalytical laboratory located in Marburg – Germany and enters into a 5-year strategic agreement with GSK.

Laval, Quebec, and Marburg, Germany, January 20, 2021. Nexelis, a portfolio company of Ampersand Capital Partners, and a leading provider of advanced assay development and laboratory testing services in the infectious, oncologic, and metabolic diseases fields, has signed an asset purchase agreement with GSK to acquire its GCLP-certified clinical bioanalytical laboratory located in Marburg, Germany.

The Clinical Laboratory Science (CLS) team in Marburg, consisting of approximately 80 scientists and analysts, will be transferred to Nexelis.  The CLS team in Marburg will continue to keep a strong relationship with GSK and support the development of future GSK vaccine candidates through a 5-year strategic collaborative agreement.

This is the fifth acquisition by Nexelis in the last three years after Pacific Biomarkers, Seattle, WA; PAIRimmune, Laval, QC; ImmunXperts, Gosselies, BE; and AIT Bioscience, Indianapolis, IN. The transaction with GSK enables Nexelis to expand its global footprint as well as its immunology-centric assay development and high-throughput clinical testing capacities.

Benoit Bouche, Nexelis CEO commented “We are thrilled to welcome on board new colleagues with a legacy of over 20 years under Novartis and GSK leadership in clinical laboratory activities supporting the development of vaccines against viral and bacterial diseases. We believe that this transaction is a determining step in the establishment of Nexelis as an unrivaled global vaccine player.”

Emmanuel Hanon, Head of GSK Vaccines R&D added “Strategic outsourcing will optimize GSK’s footprint and increase our agility so that we can continue to accelerate the development of the candidate vaccines in our pipeline.  Based on the previous successful transfer of other laboratory activities to Nexelis, we are confident that this will be a great fit due to the quality and agility of the Nexelis organization.”

The transaction with GSK will be effective at the end of January 2021. Nexelis intends to quickly expand the Marburg site, initiating collaborations with other vaccine development companies as well as with the company’s other North American and European sites.

Nexelis expects to add new clinical testing platforms in Marburg that will be fully bridged with Laval platforms, develop synergies with its early development stage ImmunXperts branch in Belgium and leverage existing talents in fields such as biostatistics to form a broad-based, end-to-end service offering in bacteriology, virology, and oncology.

About Nexelis

With an unrivaled expertise in immunology, 5 operating sites in North America and Europe, and a translational offer of services covering the needs of the pharmaceutical industry from the lead selection stage to late clinical stage, Nexelis is a leading provider of assay development and advanced laboratory testing services in the infectious diseases, metabolic diseases, and oncology fields. Our versatile team of scientists, working with our state of the art technology platforms, were instrumental in the development, qualification, validation, and large-scale sample testing of assays that supported the FDA filing of almost 100 new molecular entities, including blockbuster vaccines and biologics, anti-viral drugs, immunotherapy, gene and cell therapy products. Additional information about Nexelis is available at

About Ampersand Capital Partners

Founded in 1988, Ampersand is a middle market private equity firm with more than $2 billion of assets under management dedicated to growth-oriented investments in the healthcare sector. With offices in Boston, MA and Amsterdam, Netherlands, Ampersand leverages a unique blend of private equity and operating experience to build value and drive superior long-term performance alongside its portfolio company management teams. Ampersand has helped build numerous market-leading companies across each of the firm's core healthcare sectors. Additional information about Ampersand is available at


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Last Updated: 21-Jan-2021