Christian has studied biology and philosophy at the University of Bonn. In 2005 he did his first postdoc with Hans Lehrach at the Max Planck Institute for Molecular Genomics in Berlin. In 2010 his group moved to the Institute for Pathology at the Charité - Universitätsmedizin Berlin focussing on improved patient-derived in vitro models. During his time at the Charité he was appointed head of the core-facility for functional genomics of the Charité. Within the IMI initiative Oncotrack Christian was the the academic lead of the work package in vitro models & cancer stem cells. In 2012 he, together with SAP was awarded with the Innovation award of the states Berlin and Brandenburg for his work on the Oncolyzer, a mobile-device app that allows to analyze clinical records of cancer-patients in real-time. Since May 2017 he is speaker and member of the advisory committee for Berlin's "Pharma Solutions" ZIM cluster. Christian is member of distinguished national and international scientific societies, including the New York Academy of Sciences (NYAS), the American Association for Cancer Research (AACR), the European Association for Cancer Research (EACR), the Connective Tissue Oncology Society (ctos),the German Cancer Society (DKG) and Berlin's Cancer Society (BKG).