GenDx develops and markets a comprehensive line of In Vitro Diagnostic (IVD) tests and services, analysis software and education. The company is a pioneer in the area of Sequencing-Based Typing (SBT) for transplantation.

GenDx was founded in March 2005 by Erik Rozemuller (left), Wietse Mulder (right) and Oscar Schoots (representing UMC participaties B.V.) and celebrated its 10th anniversary with over 40 employees in 2015.

GenDx has long-standing strategic alliances with renowned business partners, providing access to a large global customer base. GenDx is a privately owned, independent company with experienced management and a close-knit team of dedicated employees.

Starting with 4 employees and a software program written in DOS, much has changed over the last years. Nowadays, the company has over 50 employees allowing GenDx to be able to support HLA typing laboratories with the newest technologies and optimized workflows for HLA typing. We offer a unique approach for Sanger-based strategies, and Next-Generation Sequencing approaches.

GenDx is built on four pillars

  • Company. GenDx is a science-based enterprise, specializing in molecular diagnostics for transplantation and personalized health care.
  • Business. We develop and market innovative, reliable molecular tests, laboratory services and education.
  • Customers. GenDx offers world-class support by stimulating customer feedback and putting great emphasis on education in our renowned HLA SBT Training School.
  • Employees. GenDx people are team players, showing initiative and responsibility.

GenDx values

  • We are a leader in molecular diagnostics, combining scientific innovation with reliability.
  • We are a responsible company, understanding the needs of our customers and their patients.
  • Our customers come first, actively supporting them to better achieve their goals.
  • We value our employees, supporting their development and job satisfaction.
  • We are an independent organisation, with respect for our business partners.

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Management Team


The GenDx management team consisting of Wietse Mulder (CEO), Maarten Penning (CTO), Boudewijn Erasmus (CMO) and Roelien Brommersma (CHO) lead the divers and dynamic GenDx team. Bringing all knowledge and skills together to become a group of experts to drive innovation and outperforming solutions within the field of molecular transplant diagnostics.



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Quality Certification

GenDx has implemented the ISO 13485:2016 quality system with its focus on ensuring delivery at a consistent level of quality to its customers by having well defined and regularly reviewed processes and procedures. Besides this, Several of the GenDx HLA typing products are CE-marked IVDs.

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HLA Training School

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