| 1998-2000 | INTAS-Coordination representative, Ricci, Bologna; Lakhvich, Minsk |
| 1998-1999 | Cooperation Bayer AG |
| 1998-1999 | Cooperation EVOTEC |
| 1998- | Cooperation DuPont |
| 1996- | Cooperation Hans-Knöll-Institute |
| 1996-1999 | Consultant for Henkel KGaA |
| 1997-1999 | EVOTEC, Hamburg |
| 1997-1999 | Prof. Claude Piguet, Geneve, Switzerland |
| 1997-1999 | Prof. Anders Hallberg, Uppsala Universitet, Sweden |
| 1997-1999 | Prof. W. Geurtsen, Medizinische Hochschule Hannover |
| 1997- | PD Dr. B. Schieffer, Medizinische Hochschule Hannover |
| 2002- | Prof. Christian Haass, Alzheimer Laboratory LMU München |
| 2002-2007 | Priority Programme DFG Alzheimer SPP 1085 |
| 2003- | Dr. M. Blommers, Novartis Pharma AG, Basel, Switzerland |
| 2002- | Prof. Christian Haass, LMU München, Alzheimer Research |
| 2003- | Prof. Jochen Walter, Bonn University, Alzheimer Research |
| 2003- | Prof. Gerd Multhaup, FU Berlin, Alzheimer Research |
| 2001- | Dr. Bruno Martoglio, ETH Zurich, Switzerland |
| 2003- | Prof. E. Mandelkow, MPI Hamburg, Alzheimer Research |
| 2003- | Dr. Christian Czech, Roche, Basel, Switzerland |
| 2003- | Merck Darmstadt |
| 2004- | APOPIS (opens in new tab) Consortium, Consortium management: Verum foundation |
| 2004- | Dr. A. Giese, LMU München, Neurodegeration |
| 2004- | Prof. M. Gawaz, Universität Tübingen |
| 2004- | Dr. David Lloyd, Trinity College Dublin, Ireland |
| 2006- | Dr. Luciana Marinelli, University Naples, Italy, Ensemble Docking |