Utrecht, 29 June 2023

The board of GenDx announces that Maarten Penning, PhD, will assume the helm of the company and is appointed General Manager, as Wietse Mulder PhD will step down as CEO per July, 1st 2023. Per the same date, Maarten Penning PhD will also become executive director of the GenDx Board, joining directors, Denis Fortier and Hervé Duchesne de Lamotte, representing Eurobio Scientific, GenDx’s parent company.

Maarten Penning is trained as a molecular biologist and joined GenDx for more than 13 years. He has executed various roles at the company ranging from project management, business development till his current job as CTO where he oversees the global R&D of Eurobio Scientific group. As deputy CEO, he also chaperoned the GenDx leadership team for several years. Maarten Penning is a trusted and respected person in the field and will provide its expertise to support the successful transition to a new era for GenDx, part of the Eurobio Scientific group.

At the same time, the Board announces that Wietse Mulder will continue to support GenDx as Ambassador. In that role he will support the GenDx Leadership Team (members) and will devote a particular attention to marketing and communication, including GenDx’s corporate social responsibility activities. He will also continue to actively represent GenDx, locally, and at international conferences.

Since January 2004, Wietse Mulder has devoted full attention to the GenDx project. From a draft business plan and establishing the company in 2005, developing new products, till today where GenDx has become a well-respected company in the field of transplant diagnostics and intends to become a major player in the market through its combination with Eurobio. Thus, the company is at a milestone while it’s entering the field of companion diagnostics and cfDNA diagnostics.

Wietse Mulder comments: “Leaving executive office of GenDx is a major step in the pursue of my career as Life Science entrepreneur. I am proud that together with Erik Rozemuller and all GenDx colleagues, we have achieved a lot for the transplantation diagnostics market. I enjoyed having worked for almost 20 years at GenDx in a truly collaborative atmosphere. Following last year’s transaction, I feel that we found with Eurobio Scientific the best home to ensure continuity with our partners and clients, and the entrepreneurial spirit needed to further develop GenDx.

I am proud to see that we have maintained the same spirit since we started. Focused on educating workers in the transplant field, enabling better HLA typing, allowing better matching and together with accurate transplant monitoring, increasing the success of solid organ and stem cell transplantation. As an ambassador, I will continue to support GendX with the same commitment/dedication

Maarten Penning comments: “It is an honor to be the successor of Wietse Mulder, after working together since 2010. It’s impossible to fully express what Wietse Mulder does mean for GenDx and colleagues. I am looking forward to continue to support and educate our partners in the transplant diagnostic field. I am motivated to make GenDx even more successful in the coming years, together with the GenDx Leadership Team and all other fantastic GenDx colleagues. Based on the GenDx experiences, I am confident that together we will also have a meaningful contribution to the success of EuroBio Scientific Group.

About GenDx, a Eurobio Scientific Company

Genome Diagnostics B.V., also known as GenDx, is a Dutch company specialized in molecular diagnostics, focused on development, production and sales of innovative assays and analysis software for transplantation and companion diagnostics. To support GenDx’s USA customers it has an office near O’Hare airport, Chicago, IL. GenDx specializes in (Sanger and NGS) HLA sequencing-based typing strategies and offers both reagents and software. As one of the sequencing pioneering companies in the HLA field, GenDx started offering NGS strategies in 2013, consisting of NGSgo® reagents and the software package NGSengine® for various NGS platforms. Additionally, GenDx offers products for chimerism monitoring by qPCR and – launched recently – by NGS: NGStrack® & TRKengine®. Thanks to its extensive in-house expertise, GenDx also offers custom laboratory services for basic and clinical research organizations. GenDx Education organizes dedicated HLA sequence-based typing and chimerism monitoring training courses worldwide on a regular basis for anyone working in tissue typing or research laboratories, blood banks, and donor registries. GenDx is based in the Alexander Numan building at the Utrecht Science Park, the Netherlands and was founded in 2005 by Erik Rozemuller PhD, Wietse Mulder PhD. In October 2022, Eurobio Scientific acquired all shares of GenDx. For further information about GenDx visit

About Eurobio Scientific

Eurobio Scientific is a key player in the field of specialty in vitro diagnostics. It is involved from research to manufacturing and commercialization of diagnostic tests in the fields of transplantation, immunology and infectious diseases, and sells instruments and products for research laboratories, including biotechnology and pharmaceutical companies. Through many partnerships and a strong presence in hospitals, Eurobio Scientific has established its own distribution network and a portfolio of proprietary products in the molecular biology field. The Group has approximately 180 employees and three production units based in France, in the Paris region, in Germany and in the United States, and several affiliates based in Dorking UK, Sissach Switzerland, Bünde Germany and Utrecht in The Netherlands. Eurobio Scientific’s reference shareholder is the EurobioNext holding company which brings together its two directors, Jean-Michel Carle and Denis Fortier, alongside the “Pépites et Territoires” by AXA & NextStage AM investment program, managed by NextStage AM. For more information, please visit : The company is publicly listed on the Euronext Growth market in Paris Euronext Growth BPI Innovation, PEA-PME 150 and Next Biotech indices, Euronext European Rising Tech label. Symbol: ALERS – ISIN Code: FR0013240934 – Reuters: ALERS.PA – Bloomberg: ALERS:FP

GenDx Yalelaan 48, 3584 CM Utrecht, The Netherlands, Office: +31 30 252 3799, E-mail:

Contact GenDx: Hanneke Merkens PhD, Director Marketing and Communication Email:, Phone: +31 6 12 65 5845

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