Functional Characterization of psiPSC-CMs Derived from Patients with Tetralogy of Fallot in Comparison to Healthy Controls (supported by BMBF through German Centre for Cardiovascular Research ("Deutsches Zentrum für Herz-Kreislauf-Forschung"), collaborative project with partner site Berlin, Proposal No. 81X2800136): 2016-2017

Role of Nucleoside Diphosphate Kinases in Clinical and Experimental Atrial Fibrillation (supported by BMBF through German Centre for Cardiovascular Research ("Deutsches Zentrum für Herz-Kreislauf-Forschung"), collaborative project with partner site Heidelberg/Mannheim): 2016-2017

Calcium Handling Abnormalities Contributing to the Atrial Arrhythmogenic Substrate in a Porcine Model of Ischemic Heart Failure (supported by BMBF through German Centre for Cardiovascular Research ("Deutsches Zentrum für Herz-Kreislauf-Forschung"), collaborative project with partner site Munich, Proposal No. 81X2800108): 2015-2017

Perturbed Sodium and Calcium Fluxes in Atrial Fibrillation (supported by National Institutes of Health, collaborative project with UC Davis, CA, USA, Proposal No. RO1 HL131517-01): 2016-2021

Molecular Basis and Proarrhythmic Role of Enhanced Small-Conductance Ca²⁺-Activated K⁺ Channels in Patients with Atrial Fibrillation, supported by Single Project Grant of DFG, Proposal No. DO 769/4-1): 2017-2020

The Role of Inflammasome in the Pathogenesis of Atrial Fibrillation (supported by National Institutes of Health, collaborative project with Baylor College of Medicine, Houston, TX, USA, Proposal No. RO1 HL136389-01): 2017-2021

The European Network for Translational Research in Atrial Fibrillation, EUTRAF (supported by The European Union, FP7-HEALTH-2010, large-scale integrating project, Proposal No. 261057): 2010-2015

Molecular Mechanisms of Constitutively Active I_K,ACh in Patients with Atrial Fibrillation (supported by DFG, Proposal No. DO 769/1-1/3): 2008-2014

European-North American Atrial Fibrillation Research Alliance, ENAFRA (supported by The Transatlantic Networks of Excellence in Cardiovascular Research Program, Fondation Leducq, Network Grant No. 07CVD03): 2007-2013

German Centre for Cardiovascular Research ("Deutsches Zentrum für Herz-Kreislauf-Forschung", supported by BMBF, partner site Heidelberg/Mannheim: 2011-2013

Electrical Remodeling and Effects of Drugs in Human Chronic Atrial Fibrillation (supported by BMBF, Atrial Fibrillation Competence Network, AFNET, Proposal No. 01GI0204, Projects C3 and C4): 2003-2010