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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