After graduating from Medical School at the Julius-Maximilians University Würzburg and the Royal London School of Medicine, Thomas started a residency program in Neurology and worked in parallel in the Neuroimmunology Research groups of Klaus Toyka, Würzburg and later with Stefan Jung, Homburg/Saar. He became board approved Fellow in Neurology in 2005 and then began a postdoctoral training with Vijay Kuchroo at Harvard Medical School where he focused on the shaping of T helper cell responses in autoimmune diseases, in particular in the context of autoimmunity in the central nervous system.
Back in Germany, Thomas became senior physician at the Department of Neurology of the Technical University of Munich and started his own research group with a Heisberg Award from the German Research Council. His major interest remains the molecular characterization of fate decisions of T cells in inflammation.
Thomas is full professor of Neuroimmunology and deputy director of the Department of Neurology of the Klinikum rechts der Isar. He is member of several research consortia funded by the German Research Council (SFB 1054, TR128, SyNergy Excellence Cluster) and holds an ERC consolidator grant. For his work, Thomas was awarded a series of prizes including the Sobek Young Investigator Award and the Heinrich-Pette-Preis of the German Neurologic Society.