Manfred Koehler, PhD
Board Chairman and Owner

Manfred has a masters degree in mathematics and economics from Goettingen and Freiburg and a PhD in engineering. He started his professional career as a research associate at the University of Berlin and later continued at F. Hoffmann-La Roche, Basel, as the sole responsible statistician for phase IIIb studies. In 1991 Manfred founded the company Dr. Manfred Koehler GmbH specialized in data management, biometrics and SAS programming, where he served as CEO since 1991. In 2001 Manfred co-founded a second company clinIT AG specialized in innovative EDC solutions. After 12 years of excellent and close cooperation, these 2 companies have been consolidated formally and legally by a merger. Manfred served as a CEO of the successor company KOEHLER eClinical GmbH, until 2019.


Michael Pfitzenmaier

Michael has a degree in mathematics and economics and has over 15 years work experience at Koehler-eClinical. He is an expert in biostatistical consulting and responsible for management of operational activities including data management, SAS programming and biostatistics. Michael has led the operations division of the company since 2014 and taken over as CEO in Summer 2019, with the focus on Operations.


Antal K. Hajos, PhD

A biochemist (PhD, USA) by training, Antal has more than 25 years of experience in the pharmaceutical and CRO industry in leadership positions in the areas of Medical Writing, Clinical Operations, Global Project & Program Management and consulting. Over the past 10 years, he has been the CEO of two mid-size CROs as well as a Pharma subsidiary. Antal has joined Koehler-eClinical as CEO in Summer 2019, with the focus on SG&A.

News and Events

We proudly announce the publication "Regulatory cell therapy in kidney transplantation (The ONE Study): a harmonised design and analysis of seven non-randomised, single-arm, phase 1/2A trials" in the > Lancet 2020; 395: 1627–39

KOEHLER eClinical has been the CRO partner in this EU-funded study. For further information write to:

Major release of our
Vitessa EDC platform:

Version 8.3.0.

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